feat: 增加条件节点正则匹配

- 使用 RE2/J 完成安全正则执行和分层校验

- 增加全宽多行输入、说明提示和专项测试

easyflow-modules/easyflow-module-ai/pom.xml

@@ -53,6 +53,10 @@
             <groupId>com.easyagents</groupId>
             <artifactId>easy-agents-spring-boot-starter</artifactId>
         </dependency>
+        <dependency>
+            <groupId>com.google.re2j</groupId>
+            <artifactId>re2j</artifactId>
+        </dependency>
         <!--使用
         enjoy 模板引擎-->
         <dependency>

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/easyagentsflow/service/WorkflowCheckService.java

@@ -11,6 +11,8 @@ import tech.easyflow.ai.easyagentsflow.entity.WorkflowCheckResult;
 import tech.easyflow.ai.easyagentsflow.entity.WorkflowCheckStage;
 import tech.easyflow.ai.entity.PluginItem;
 import tech.easyflow.ai.entity.Workflow;
+import tech.easyflow.ai.node.ConditionNode;
+import tech.easyflow.ai.node.ConditionRuleSupport;
 import tech.easyflow.ai.node.filegeneration.FileGenerationRules;
 import tech.easyflow.ai.node.filegeneration.SourceFormat;
 import tech.easyflow.ai.node.filegeneration.TargetFormat;
@@ -50,6 +52,7 @@ public class WorkflowCheckService {
     private static final String TYPE_START = "startNode";
     private static final String TYPE_END = "endNode";
     private static final String TYPE_LOOP = "loopNode";
+    private static final String TYPE_CONDITION = "conditionNode";
     private static final String TYPE_WORKFLOW = "workflow-node";
     private static final String TYPE_PLUGIN = "plugin-node";
     private static final String TYPE_MAKE_FILE = "make-file";
@@ -178,6 +181,7 @@ public class WorkflowCheckService {
             }
         }
         checkLoopConfigurations(nodes, nodeMap, issues, issueKeys);
+        checkConditionConfigurations(nodes, issues, issueKeys);
 
         List<EdgeView> edges = new ArrayList<>();
         Set<String> edgeIds = new HashSet<>();
@@ -262,6 +266,131 @@ public class WorkflowCheckService {
         }
     }
 
+    /**
+     * 校验条件判断节点的可视化规则配置。
+     *
+     * @param nodes 节点列表
+     * @param issues 问题列表
+     * @param issueKeys 问题去重键
+     */
+    private void checkConditionConfigurations(
+            List<NodeView> nodes,
+            List<WorkflowCheckIssue> issues,
+            Set<String> issueKeys) {
+        for (NodeView node : nodes) {
+            if (!TYPE_CONDITION.equals(node.type) || node.data == null) {
+                continue;
+            }
+
+            Object branchesValue = node.data.get("branches");
+            if (!(branchesValue instanceof JSONArray)
+                    || ((JSONArray) branchesValue).isEmpty()) {
+                addIssue(
+                        issues,
+                        issueKeys,
+                        "CONDITION_BRANCHES_EMPTY",
+                        "条件判断节点至少需要一个分支",
+                        node.id,
+                        null,
+                        node.name);
+                continue;
+            }
+
+            JSONArray branches = (JSONArray) branchesValue;
+            for (int branchIndex = 0; branchIndex < branches.size(); branchIndex++) {
+                Object branchValue = branches.get(branchIndex);
+                if (!(branchValue instanceof JSONObject)) {
+                    addIssue(
+                            issues,
+                            issueKeys,
+                            "CONDITION_BRANCH_INVALID",
+                            "第 " + (branchIndex + 1) + " 个条件分支配置无效",
+                            node.id,
+                            null,
+                            node.name);
+                    continue;
+                }
+
+                JSONObject branch = (JSONObject) branchValue;
+                if ("expression".equalsIgnoreCase(
+                        trimToNull(branch.getString("mode")))) {
+                    continue;
+                }
+                Object rulesValue = branch.get("rules");
+                if (rulesValue == null) {
+                    continue;
+                }
+                if (!(rulesValue instanceof JSONArray)) {
+                    addIssue(
+                            issues,
+                            issueKeys,
+                            "CONDITION_RULES_INVALID",
+                            conditionBranchLabel(branch, branchIndex) + "的条件规则必须是数组",
+                            node.id,
+                            null,
+                            node.name);
+                    continue;
+                }
+
+                JSONArray rules = (JSONArray) rulesValue;
+                for (int ruleIndex = 0; ruleIndex < rules.size(); ruleIndex++) {
+                    Object ruleValue = rules.get(ruleIndex);
+                    ConditionNode.ConditionRule rule = toConditionRule(ruleValue);
+                    String error = ConditionRuleSupport.validateRule(rule);
+                    if (error == null) {
+                        continue;
+                    }
+                    addIssue(
+                            issues,
+                            issueKeys,
+                            "CONDITION_RULE_INVALID",
+                            conditionBranchLabel(branch, branchIndex)
+                                    + "第 " + (ruleIndex + 1)
+                                    + " 条条件配置无效: " + error,
+                            node.id,
+                            null,
+                            node.name);
+                }
+            }
+        }
+    }
+
+    /**
+     * 将 JSON 条件规则转换为运行时规则对象。
+     *
+     * @param ruleValue 条件规则 JSON 值
+     * @return 条件规则；输入无效时返回 {@code null}
+     */
+    private ConditionNode.ConditionRule toConditionRule(Object ruleValue) {
+        if (!(ruleValue instanceof JSONObject)) {
+            return null;
+        }
+        JSONObject ruleJson = (JSONObject) ruleValue;
+        ConditionNode.ConditionRule rule = new ConditionNode.ConditionRule();
+        rule.setId(ruleJson.getString("id"));
+        rule.setJoiner(ruleJson.getString("joiner"));
+        rule.setLeftRef(ruleJson.getString("leftRef"));
+        rule.setOperator(ruleJson.getString("operator"));
+        rule.setRightType(ruleJson.getString("rightType"));
+        rule.setRightValue(ruleJson.getString("rightValue"));
+        rule.setRightRef(ruleJson.getString("rightRef"));
+        return rule;
+    }
+
+    /**
+     * 获取用于校验错误展示的条件分支名称。
+     *
+     * @param branch 分支配置
+     * @param branchIndex 分支序号
+     * @return 分支名称
+     */
+    private String conditionBranchLabel(JSONObject branch, int branchIndex) {
+        String label = trimToNull(branch.getString("label"));
+        return StringUtils.hasText(label)
+                ? "条件分支[" + label + "]"
+                : "第 " + (branchIndex + 1) + " 个条件分支";
+    }
+
     /**
      * 校验普通节点启用循环后的总执行次数。
      *

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/node/ConditionNode.java

@@ -148,8 +148,19 @@ public class ConditionNode extends BaseNode {
         }
 
         Boolean matched = null;
-        for (ConditionRule rule : rules) {
-            boolean ruleMatched = checkRule(chain, rule);
+        for (int ruleIndex = 0; ruleIndex < rules.size(); ruleIndex++) {
+            ConditionRule rule = rules.get(ruleIndex);
+            boolean ruleMatched;
+            try {
+                ruleMatched = checkRule(chain, rule);
+            } catch (IllegalArgumentException e) {
+                throw new ChainException(String.format(
+                        "条件分支规则执行失败，分支[%s/%s]，规则[%d]: %s",
+                        branch.getId(),
+                        branch.getLabel(),
+                        ruleIndex + 1,
+                        e.getMessage()), e);
+            }
             if (matched == null) {
                 matched = ruleMatched;
                 continue;
@@ -167,8 +178,9 @@ public class ConditionNode extends BaseNode {
     }
 
     private boolean checkRule(Chain chain, ConditionRule rule) {
-        if (rule == null || StringUtil.noText(rule.getOperator())) {
-            return false;
+        String validationError = ConditionRuleSupport.validateRule(rule);
+        if (validationError != null) {
+            throw new IllegalArgumentException(validationError);
         }
 
         Object leftValue = resolveValue(chain, rule.getLeftRef());
@@ -201,8 +213,10 @@ public class ConditionNode extends BaseNode {
                 return contains(leftValue, rightValue);
             case "notContains":
                 return !contains(leftValue, rightValue);
+            case ConditionRuleSupport.OPERATOR_REGEX_MATCH:
+                return ConditionRuleSupport.matchesRegex(leftValue, rule.getRightValue());
             default:
-                return false;
+                throw new IllegalArgumentException("不支持的条件操作符: " + operator);
         }
     }
 

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/node/ConditionNodeParser.java

@@ -13,6 +13,15 @@ import java.util.List;
  */
 public class ConditionNodeParser extends BaseNodeParser<ConditionNode> {
 
+    /**
+     * 将 TinyFlow 条件节点配置解析为运行时节点。
+     *
+     * @param root 节点根配置
+     * @param data 节点业务配置
+     * @param tinyflow 工作流配置
+     * @return 条件判断运行时节点
+     * @throws RuntimeException 分支或规则配置无效
+     */
     @Override
     protected ConditionNode doParse(JSONObject root, JSONObject data, JSONObject tinyflow) {
         ConditionNode node = new ConditionNode();
@@ -32,11 +41,50 @@ public class ConditionNodeParser extends BaseNodeParser<ConditionNode> {
         if (StringUtil.noText(node.getDefaultBranchId())) {
             throw new RuntimeException("条件判断节点必须配置默认分支");
         }
+        validateBranches(branches);
 
         return node;
     }
 
+    /**
+     * 返回条件节点类型名称。
+     *
+     * @return 条件节点类型名称
+     */
     public String getNodeName() {
         return "conditionNode";
     }
+
+    /**
+     * 校验可视化分支内的全部条件规则。
+     *
+     * @param branches 条件分支
+     * @throws RuntimeException 任一规则配置无效
+     */
+    private void validateBranches(List<ConditionNode.ConditionBranch> branches) {
+        for (int branchIndex = 0; branchIndex < branches.size(); branchIndex++) {
+            ConditionNode.ConditionBranch branch = branches.get(branchIndex);
+            if (branch == null
+                    || "expression".equalsIgnoreCase(
+                    StringUtil.getFirstWithText(branch.getMode(), "visual"))) {
+                continue;
+            }
+            List<ConditionNode.ConditionRule> rules = branch.getRules();
+            if (rules == null || rules.isEmpty()) {
+                continue;
+            }
+            for (int ruleIndex = 0; ruleIndex < rules.size(); ruleIndex++) {
+                String error = ConditionRuleSupport.validateRule(rules.get(ruleIndex));
+                if (error != null) {
+                    String branchName = StringUtil.getFirstWithText(
+                            branch.getLabel(),
+                            branch.getId(),
+                            "第 " + (branchIndex + 1) + " 个分支");
+                    throw new RuntimeException(
+                            "条件分支[" + branchName + "]第 " + (ruleIndex + 1)
+                                    + " 条规则配置无效: " + error);
+                }
+            }
+        }
+    }
 }

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/node/ConditionRuleSupport.java

@@ -0,0 +1,155 @@
+package tech.easyflow.ai.node;
+
+import com.easyagents.flow.core.util.StringUtil;
+import com.google.re2j.Pattern;
+import com.google.re2j.PatternSyntaxException;
+
+import java.util.LinkedHashMap;
+import java.util.Map;
+import java.util.Set;
+
+/**
+ * 条件判断节点规则校验与安全正则执行支持。
+ */
+public final class ConditionRuleSupport {
+
+    public static final String OPERATOR_REGEX_MATCH = "regexMatch";
+    public static final int MAX_REGEX_LENGTH = 512;
+
+    private static final int MAX_REGEX_CACHE_SIZE = 256;
+    private static final Set<String> SUPPORTED_OPERATORS = Set.of(
+            "eq",
+            "ne",
+            "gt",
+            "gte",
+            "lt",
+            "lte",
+            "isEmpty",
+            "isNotEmpty",
+            "contains",
+            "notContains",
+            OPERATOR_REGEX_MATCH);
+    private static final Map<String, Pattern> REGEX_CACHE =
+            new LinkedHashMap<String, Pattern>(32, 0.75F, true) {
+                private static final long serialVersionUID = 1L;
+
+                @Override
+                protected boolean removeEldestEntry(Map.Entry<String, Pattern> eldest) {
+                    return size() > MAX_REGEX_CACHE_SIZE;
+                }
+            };
+
+    /**
+     * 禁止创建工具类实例。
+     */
+    private ConditionRuleSupport() {
+    }
+
+    /**
+     * 校验一条可视化条件规则。
+     *
+     * @param rule 条件规则
+     * @return 校验错误；返回 {@code null} 表示通过
+     */
+    public static String validateRule(ConditionNode.ConditionRule rule) {
+        if (rule == null) {
+            return "条件规则不能为空";
+        }
+
+        String operator = rule.getOperator();
+        if (StringUtil.noText(operator)) {
+            return "条件操作符不能为空";
+        }
+        if (!SUPPORTED_OPERATORS.contains(operator)) {
+            return "不支持的条件操作符: " + operator;
+        }
+        if (!OPERATOR_REGEX_MATCH.equals(operator)) {
+            return null;
+        }
+        if (!"fixed".equals(rule.getRightType())) {
+            return "正则表达式必须使用固定值";
+        }
+        return validateRegex(rule.getRightValue());
+    }
+
+    /**
+     * 校验正则表达式的长度和 RE2/J 语法。
+     *
+     * @param regex 正则表达式
+     * @return 校验错误；返回 {@code null} 表示通过
+     */
+    public static String validateRegex(String regex) {
+        try {
+            requireRegex(regex);
+            return null;
+        } catch (IllegalArgumentException e) {
+            return e.getMessage();
+        }
+    }
+
+    /**
+     * 使用 RE2/J 在标量左值中查找正则匹配。
+     *
+     * @param leftValue 条件左值
+     * @param regex 正则表达式
+     * @return 任意位置存在匹配时返回 {@code true}
+     * @throws IllegalArgumentException 正则无效或左值类型不支持
+     */
+    public static boolean matchesRegex(Object leftValue, String regex) {
+        Pattern pattern = requireRegex(regex);
+        if (leftValue == null) {
+            return false;
+        }
+        if (!(leftValue instanceof CharSequence)
+                && !(leftValue instanceof Number)
+                && !(leftValue instanceof Boolean)
+                && !(leftValue instanceof Character)) {
+            throw new IllegalArgumentException(
+                    "正则匹配仅支持字符串、数字或布尔值，当前类型: "
+                            + leftValue.getClass().getSimpleName());
+        }
+        return pattern.matcher(String.valueOf(leftValue)).find();
+    }
+
+    /**
+     * 校验并获取正则模式。
+     *
+     * @param regex 正则表达式
+     * @return 已编译 RE2/J 模式
+     * @throws IllegalArgumentException 正则为空、过长或语法无效
+     */
+    private static Pattern requireRegex(String regex) {
+        if (StringUtil.noText(regex)) {
+            throw new IllegalArgumentException("正则表达式不能为空");
+        }
+        if (regex.length() > MAX_REGEX_LENGTH) {
+            throw new IllegalArgumentException(
+                    "正则表达式不能超过 " + MAX_REGEX_LENGTH + " 个字符");
+        }
+        try {
+            return compileRegex(regex);
+        } catch (PatternSyntaxException e) {
+            throw new IllegalArgumentException(
+                    "正则表达式语法错误: " + e.getMessage(), e);
+        }
+    }
+
+    /**
+     * 获取已编译正则，并以有界 LRU 缓存复用结果。
+     *
+     * @param regex 正则表达式
+     * @return 已编译 RE2/J 模式
+     * @throws PatternSyntaxException 正则语法无效
+     */
+    private static Pattern compileRegex(String regex) {
+        synchronized (REGEX_CACHE) {
+            Pattern cached = REGEX_CACHE.get(regex);
+            if (cached != null) {
+                return cached;
+            }
+            Pattern compiled = Pattern.compile(regex);
+            REGEX_CACHE.put(regex, compiled);
+            return compiled;
+        }
+    }
+}

easyflow-modules/easyflow-module-ai/src/test/java/tech/easyflow/ai/easyagentsflow/service/WorkflowCheckServiceTest.java

@@ -8,6 +8,7 @@ import org.junit.Test;
 import tech.easyflow.ai.easyagentsflow.entity.WorkflowCheckResult;
 import tech.easyflow.ai.easyagentsflow.entity.WorkflowCheckStage;
 import tech.easyflow.ai.entity.Workflow;
+import tech.easyflow.ai.node.ConditionNodeParser;
 import tech.easyflow.ai.node.MakeFileNodeParser;
 import tech.easyflow.ai.node.SearchDatasetNodeParser;
 import tech.easyflow.ai.node.WorkflowNodeParser;
@@ -21,6 +22,92 @@ import java.util.Map;
 
 public class WorkflowCheckServiceTest {
 
+    /**
+     * 验证保存阶段接受合法的正则条件规则。
+     */
+    @Test
+    public void testSaveShouldPassValidRegexCondition() throws Exception {
+        WorkflowCheckService service = newService(new HashMap<>());
+        String content = workflowJson(
+                array(node(
+                        "condition-1",
+                        "conditionNode",
+                        null,
+                        conditionData("regexMatch", "fixed", "(?i)^[a-z]+-\\d+$"))),
+                new JSONArray());
+
+        WorkflowCheckResult result = service.checkContent(
+                content, WorkflowCheckStage.SAVE, null);
+
+        Assert.assertTrue(result.isPassed());
+    }
+
+    /**
+     * 验证保存阶段拒绝 RE2/J 不支持的正则语法。
+     */
+    @Test
+    public void testSaveShouldBlockUnsupportedRegexSyntax() throws Exception {
+        WorkflowCheckService service = newService(new HashMap<>());
+        String content = workflowJson(
+                array(node(
+                        "condition-1",
+                        "conditionNode",
+                        null,
+                        conditionData("regexMatch", "fixed", "(?=VIP)VIP"))),
+                new JSONArray());
+
+        WorkflowCheckResult result = service.checkContent(
+                content, WorkflowCheckStage.SAVE, null);
+
+        Assert.assertFalse(result.isPassed());
+        assertHasCode(result, "CONDITION_RULE_INVALID");
+        Assert.assertTrue(result.getIssues().stream()
+                .anyMatch(issue -> issue.getMessage().contains("VIP 分支")
+                        && issue.getMessage().contains("第 1 条")));
+
+        WorkflowCheckResult preExecuteResult = service.checkContent(
+                content, WorkflowCheckStage.PRE_EXECUTE, null);
+        Assert.assertFalse(preExecuteResult.isPassed());
+        assertHasCode(preExecuteResult, "CONDITION_RULE_INVALID");
+    }
+
+    /**
+     * 验证保存阶段拒绝变量正则和未知操作符。
+     */
+    @Test
+    public void testSaveShouldBlockDynamicRegexAndUnknownOperator() throws Exception {
+        WorkflowCheckService service = newService(new HashMap<>());
+        String content = workflowJson(
+                array(
+                        node(
+                                "condition-ref",
+                                "conditionNode",
+                                null,
+                                conditionData(
+                                        "regexMatch",
+                                        "ref",
+                                        "start.regex")),
+                        node(
+                                "condition-unknown",
+                                "conditionNode",
+                                null,
+                                conditionData(
+                                        "unknown",
+                                        "fixed",
+                                        "VIP"))),
+                new JSONArray());
+
+        WorkflowCheckResult result = service.checkContent(
+                content, WorkflowCheckStage.SAVE, null);
+
+        Assert.assertFalse(result.isPassed());
+        Assert.assertEquals(
+                2,
+                result.getIssues().stream()
+                        .filter(issue -> "CONDITION_RULE_INVALID".equals(issue.getCode()))
+                        .count());
+    }
+
     /**
      * 验证普通节点循环次数必须处于 1～300。
      */
@@ -579,6 +666,7 @@ public class WorkflowCheckServiceTest {
         parser.addNodeParser("workflow-node", new WorkflowNodeParser());
         parser.addNodeParser("search-dataset-node", new SearchDatasetNodeParser());
         parser.addNodeParser("make-file", new MakeFileNodeParser());
+        parser.addNodeParser("conditionNode", new ConditionNodeParser());
         setField(service, "chainParser", parser);
         setField(service, "workflowService", mockWorkflowService(workflowStore));
         setField(service, "workflowDatacenterContentService", new WorkflowDatacenterContentService());
@@ -680,6 +768,49 @@ public class WorkflowCheckServiceTest {
         return node(id, "search-dataset-node", parentId, data);
     }
 
+    /**
+     * 创建包含一个普通分支和 Else 分支的条件节点配置。
+     *
+     * @param operator 条件操作符
+     * @param rightType 右值类型
+     * @param rightValue 右值
+     * @return 条件节点数据
+     */
+    private static JSONObject conditionData(
+            String operator,
+            String rightType,
+            String rightValue) {
+        JSONObject rule = new JSONObject();
+        rule.put("id", "rule-1");
+        rule.put("joiner", "AND");
+        rule.put("leftRef", "start.value");
+        rule.put("operator", operator);
+        rule.put("rightType", rightType);
+        rule.put("rightValue", rightValue);
+        if ("ref".equals(rightType)) {
+            rule.put("rightRef", rightValue);
+        }
+
+        JSONObject branch = new JSONObject();
+        branch.put("id", "branch-vip");
+        branch.put("label", "VIP 分支");
+        branch.put("mode", "visual");
+        branch.put("rules", array(rule));
+
+        JSONObject defaultBranch = new JSONObject();
+        defaultBranch.put("id", "branch-else");
+        defaultBranch.put("label", "Else");
+        defaultBranch.put("mode", "visual");
+        defaultBranch.put("rules", new JSONArray());
+
+        JSONObject data = data("条件判断");
+        data.put("branchMode", "first_match");
+        data.put("branches", array(branch, defaultBranch));
+        data.put("defaultBranchId", "branch-else");
+        data.put("defaultBranchLabel", "Else");
+        return data;
+    }
+
     /**
      * 创建显式循环节点数据。
      *

easyflow-modules/easyflow-module-ai/src/test/java/tech/easyflow/ai/node/ConditionNodeTest.java

@@ -150,6 +150,117 @@ public class ConditionNodeTest {
         Assert.assertEquals(false, result.get("matchedByDefault"));
     }
 
+    /**
+     * 验证正则默认查找匹配，并支持锚点和内联大小写标志。
+     */
+    @Test
+    public void testRegexMatchFindAnchorsAndInlineFlag() {
+        ConditionNode node = new ConditionNode();
+        ConditionNode.ConditionBranch hit = visualBranch(
+                "branch_regex",
+                "正则分支",
+                visualRule(
+                        "ctx.orderCode",
+                        ConditionRuleSupport.OPERATOR_REGEX_MATCH,
+                        "fixed",
+                        "(?i)[a-z]+-\\d+",
+                        null));
+        ConditionNode.ConditionBranch def = defaultBranch("branch_default", "默认分支");
+        node.setBranches(Arrays.asList(hit, def));
+        node.setDefaultBranchId(def.getId());
+        node.setDefaultBranchLabel(def.getLabel());
+
+        Map<String, Object> partialResult = node.execute(
+                createChain(Map.of("ctx", Map.of("orderCode", "订单ABC-123完成"))));
+        Assert.assertEquals("branch_regex", partialResult.get("matchedBranchId"));
+
+        hit.setRules(Collections.singletonList(
+                visualRule(
+                        "ctx.orderCode",
+                        ConditionRuleSupport.OPERATOR_REGEX_MATCH,
+                        "fixed",
+                        "(?i)^[a-z]+-\\d+$",
+                        null)));
+        Map<String, Object> anchoredMiss = node.execute(
+                createChain(Map.of("ctx", Map.of("orderCode", "订单ABC-123完成"))));
+        Assert.assertEquals("branch_default", anchoredMiss.get("matchedBranchId"));
+
+        Map<String, Object> anchoredHit = node.execute(
+                createChain(Map.of("ctx", Map.of("orderCode", "ABC-123"))));
+        Assert.assertEquals("branch_regex", anchoredHit.get("matchedBranchId"));
+    }
+
+    /**
+     * 验证正则支持数字和布尔标量，并覆盖语法和长度边界。
+     */
+    @Test
+    public void testRegexMatchScalarAndValidationBoundaries() {
+        Assert.assertTrue(ConditionRuleSupport.matchesRegex(123, "^12\\d$"));
+        Assert.assertTrue(ConditionRuleSupport.matchesRegex(true, "^true$"));
+        Assert.assertFalse(ConditionRuleSupport.matchesRegex(null, ".*"));
+        Assert.assertTrue(
+                ConditionRuleSupport.validateRegex(" ")
+                        .contains("不能为空"));
+        Assert.assertTrue(
+                ConditionRuleSupport.validateRegex("(a)\\1")
+                        .contains("语法错误"));
+        Assert.assertTrue(
+                ConditionRuleSupport.validateRegex(
+                                "a".repeat(ConditionRuleSupport.MAX_REGEX_LENGTH + 1))
+                        .contains(String.valueOf(ConditionRuleSupport.MAX_REGEX_LENGTH)));
+    }
+
+    /**
+     * 验证正则拒绝集合左值并返回可定位错误。
+     */
+    @Test
+    public void testRegexMatchShouldRejectCollectionValue() {
+        ConditionNode node = new ConditionNode();
+        ConditionNode.ConditionBranch hit = visualBranch(
+                "branch_regex",
+                "正则分支",
+                visualRule(
+                        "ctx.values",
+                        ConditionRuleSupport.OPERATOR_REGEX_MATCH,
+                        "fixed",
+                        "\\d+",
+                        null));
+        ConditionNode.ConditionBranch def = defaultBranch("branch_default", "默认分支");
+        node.setBranches(Arrays.asList(hit, def));
+        node.setDefaultBranchId(def.getId());
+
+        ChainException exception = Assert.assertThrows(
+                ChainException.class,
+                () -> node.execute(createChain(
+                        Map.of("ctx", Map.of("values", Arrays.asList(1, 2))))));
+
+        Assert.assertTrue(exception.getMessage().contains("正则分支"));
+        Assert.assertTrue(exception.getMessage().contains("规则[1]"));
+        Assert.assertTrue(exception.getMessage().contains("仅支持字符串、数字或布尔值"));
+    }
+
+    /**
+     * 验证未知条件操作符不会静默进入默认分支。
+     */
+    @Test
+    public void testUnknownOperatorShouldFailExplicitly() {
+        ConditionNode node = new ConditionNode();
+        ConditionNode.ConditionBranch hit = visualBranch(
+                "branch_invalid",
+                "异常分支",
+                visualRule("ctx.value", "unknown", "fixed", "x", null));
+        ConditionNode.ConditionBranch def = defaultBranch("branch_default", "默认分支");
+        node.setBranches(Arrays.asList(hit, def));
+        node.setDefaultBranchId(def.getId());
+
+        ChainException exception = Assert.assertThrows(
+                ChainException.class,
+                () -> node.execute(createChain(Map.of("ctx", Map.of("value", "x")))));
+
+        Assert.assertTrue(exception.getMessage().contains("不支持的条件操作符"));
+        Assert.assertTrue(exception.getMessage().contains("异常分支"));
+    }
+
     @Test
     public void testManagedEdgeConditionRouting() {
         ConditionNode node = new ConditionNode();

easyflow-ui-admin/packages/tinyflow-ui/src/components/nodes/ConditionNode.svelte

@@ -1,6 +1,7 @@
 <svelte:options customElement={{ props: {} }} />
 
 <script lang="ts">
+  import {onDestroy} from 'svelte';
   import NodeWrapper from '../core/NodeWrapper.svelte';
   import {
     type Edge,
@@ -10,9 +11,13 @@
     useSvelteFlow,
     useUpdateNodeInternals
   } from '@xyflow/svelte';
-  import {Button, Input, MixedInput, Select} from '../base';
+  import {Button, Input, MixedInput, Select, Textarea} from '../base';
   import ParamTokenEditor from '../core/ParamTokenEditor.svelte';
   import {getCurrentNodeId} from '#components/utils/NodeUtils';
+  import {
+    CONDITION_REGEX_MAX_LENGTH,
+    getConditionRegexError
+  } from '#components/utils/conditionRegex';
   import {genShortId} from '../utils/IdGen';
   import {deepEqual} from '../utils/deepEqual';
   import {useRefOptions} from '#components/utils/useRefOptions.svelte';
@@ -32,7 +37,8 @@
     | 'isEmpty'
     | 'isNotEmpty'
     | 'contains'
-    | 'notContains';
+    | 'notContains'
+    | 'regexMatch';
 
   type RuleJoiner = 'AND' | 'OR';
   type BranchMode = 'visual' | 'expression';
@@ -72,8 +78,11 @@
     { value: 'isEmpty', label: '为空' },
     { value: 'isNotEmpty', label: '不为空' },
     { value: 'contains', label: '包含' },
-    { value: 'notContains', label: '不包含' }
+    { value: 'notContains', label: '不包含' },
+    { value: 'regexMatch', label: '匹配正则' }
   ] as const;
+  const REGEX_HELP =
+    '正则默认匹配文本中的任意位置；完整匹配请使用 ^ 和 $。支持常用正则语法，不支持环视和反向引用。';
 
   const {
     data,
@@ -210,6 +219,8 @@
     return !['isEmpty', 'isNotEmpty'].includes(operator);
   };
 
+  const isRegexOperator = (operator: ConditionOperator) => operator === 'regexMatch';
+
   const branchKeyword = (branch: ConditionBranch, index: number, defaultId: string) => {
     if (branch.id === defaultId) {
       return 'Else';
@@ -435,11 +446,20 @@
               [key]: value
             };
 
-            if (key === 'operator' && !isOperatorNeedRight(value as ConditionOperator)) {
+            if (key === 'operator') {
+              const nextOperator = value as ConditionOperator;
+              if (isRegexOperator(nextOperator)) {
+                nextRule.rightType = 'fixed';
+                nextRule.rightRef = '';
+                if (rule.rightType === 'ref') {
+                  nextRule.rightValue = '';
+                }
+              } else if (!isOperatorNeedRight(nextOperator)) {
                 nextRule.rightType = 'fixed';
                 nextRule.rightRef = '';
                 nextRule.rightValue = '';
               }
+            }
 
             if (key === 'rightValue') {
               nextRule.rightType = 'fixed';
@@ -536,6 +556,22 @@
     return branches.filter((branch) => branch.id !== defaultBranchId).length;
   });
 
+  let nodeInternalsFrame: number | undefined;
+  const scheduleNodeInternalsUpdate = () => {
+    if (nodeInternalsFrame !== undefined) {
+      cancelAnimationFrame(nodeInternalsFrame);
+    }
+    nodeInternalsFrame = requestAnimationFrame(() => {
+      nodeInternalsFrame = undefined;
+      updateNodeInternals(currentNodeId);
+    });
+  };
+  onDestroy(() => {
+    if (nodeInternalsFrame !== undefined) {
+      cancelAnimationFrame(nodeInternalsFrame);
+    }
+  });
+
   const missingBranchLabels = $derived.by(() => {
     const edges = store.getEdges();
     const connected = new Set<string>();
@@ -622,7 +658,21 @@
 
     <div class="condition-node-content">
     <div class="condition-rail-head">
+        <div class="condition-rail-title-group">
             <div class="condition-rail-title">分支出口</div>
+            <button
+                type="button"
+                class="condition-regex-help nodrag"
+                data-help={REGEX_HELP}
+                aria-label="正则匹配说明"
+                aria-describedby={`condition-regex-help-${currentNodeId}`}
+            >
+                i
+            </button>
+            <span id={`condition-regex-help-${currentNodeId}`} class="condition-sr-only">
+                {REGEX_HELP}
+            </span>
+        </div>
         <Button class="condition-icon-btn" title="新增分支" onclick={addBranch}>
             <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="currentColor">
                 <path d="M11 11V5H13V11H19V13H13V19H11V13H5V11H11Z"></path>
@@ -740,7 +790,14 @@
                                         >OR</button>
                                     </div>
                                 {/if}
-                                <div class="condition-simple-rule-row">
+                                {@const regexError = isRegexOperator(rule.operator)
+                                    ? getConditionRegexError(rule.rightValue)
+                                    : ''}
+                                {@const regexErrorId = `condition-regex-error-${currentNodeId}-${rule.id}`}
+                                <div
+                                    class:condition-regex-rule={isRegexOperator(rule.operator)}
+                                    class="condition-simple-rule-row"
+                                >
                                     <Select
                                         items={refOptions.current}
                                         variant="reference"
@@ -755,7 +812,53 @@
                                         value={[rule.operator]}
                                         onSelect={(item) => updateRuleField(activeBranch.id, rule.id, 'operator', item.value)}
                                     />
-                                    {#if isOperatorNeedRight(rule.operator)}
+                                    {#if isRegexOperator(rule.operator)}
+                                        <div class="condition-regex-field">
+                                            <Textarea
+                                                value={rule.rightValue}
+                                                rows={3}
+                                                maxHeight={112}
+                                                maxlength={CONDITION_REGEX_MAX_LENGTH}
+                                                placeholder="输入正则表达式"
+                                                aria-label="正则表达式"
+                                                aria-invalid={regexError ? 'true' : undefined}
+                                                aria-describedby={regexErrorId}
+                                                class="condition-regex-textarea"
+                                                onHeightChange={scheduleNodeInternalsUpdate}
+                                                oninput={(event: Event) => updateRuleField(
+                                                    activeBranch.id,
+                                                    rule.id,
+                                                    'rightValue',
+                                                    (event.target as HTMLTextAreaElement).value
+                                                )}
+                                                onchange={(event: Event) => updateRuleField(
+                                                    activeBranch.id,
+                                                    rule.id,
+                                                    'rightValue',
+                                                    (event.target as HTMLTextAreaElement).value
+                                                )}
+                                            />
+                                            <div
+                                                id={regexErrorId}
+                                                class:visible={Boolean(regexError)}
+                                                class="condition-regex-error"
+                                                aria-live="polite"
+                                            >
+                                                {regexError}
+                                            </div>
+                                            {#if activeBranch.rules!.length > 1}
+                                                <Button
+                                                    class="condition-rule-remove-btn"
+                                                    title="删除条件"
+                                                    onclick={() => updateBranchField(activeBranch.id, 'removeRule', rule.id)}
+                                                >
+                                                    <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="currentColor">
+                                                        <path d="M12 2C6.47 2 2 6.47 2 12C2 17.53 6.47 22 12 22C17.53 22 22 17.53 22 12C22 6.47 17.53 2 12 2ZM17 13H7V11H17V13Z"></path>
+                                                    </svg>
+                                                </Button>
+                                            {/if}
+                                        </div>
+                                    {:else if isOperatorNeedRight(rule.operator)}
                                         <div class="condition-right-unified-box">
                                             <MixedInput
                                                 type={rule.rightType}
@@ -846,6 +949,81 @@
     font-weight: 500;
   }
 
+  .condition-rail-title-group {
+    display: flex;
+    align-items: center;
+    gap: 6px;
+    min-width: 0;
+  }
+
+  .condition-regex-help {
+    position: relative;
+    width: 16px;
+    height: 16px;
+    padding: 0;
+    border: 1px solid var(--tf-border-color-strong);
+    border-radius: 50%;
+    background: var(--tf-bg-surface);
+    color: var(--tf-text-secondary);
+    font: inherit;
+    font-size: 11px;
+    line-height: 14px;
+    text-align: center;
+    cursor: help;
+  }
+
+  .condition-regex-help:hover,
+  .condition-regex-help:focus-visible {
+    border-color: var(--tf-primary-color);
+    color: var(--tf-primary-color);
+    background: var(--tf-primary-soft-bg);
+    outline: none;
+  }
+
+  .condition-regex-help:focus-visible {
+    box-shadow: 0 0 0 2px var(--tf-primary-soft-border);
+  }
+
+  .condition-regex-help::after {
+    content: attr(data-help);
+    position: absolute;
+    left: 0;
+    top: calc(100% + 8px);
+    width: 300px;
+    padding: 10px 12px;
+    border-radius: 8px;
+    background: var(--tf-tip-bg);
+    color: var(--tf-tip-text);
+    box-shadow: var(--tf-shadow-medium);
+    font-size: 12px;
+    font-weight: 400;
+    line-height: 1.5;
+    text-align: left;
+    white-space: normal;
+    opacity: 0;
+    visibility: hidden;
+    pointer-events: none;
+    z-index: 120;
+  }
+
+  .condition-regex-help:hover::after,
+  .condition-regex-help:focus-visible::after {
+    opacity: 1;
+    visibility: visible;
+  }
+
+  .condition-sr-only {
+    position: absolute;
+    width: 1px;
+    height: 1px;
+    padding: 0;
+    margin: -1px;
+    overflow: hidden;
+    clip: rect(0, 0, 0, 0);
+    white-space: nowrap;
+    border: 0;
+  }
+
   .condition-branch-rail {
     display: flex;
     flex-direction: column;
@@ -1110,13 +1288,18 @@
     align-items: stretch;
   }
 
+  .condition-simple-rule-row.condition-regex-rule {
+    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
+  }
+
   .condition-simple-rule-row > * {
     min-width: 0;
     width: 100%;
   }
 
   :global(.condition-simple-rule-row .tf-select),
-  :global(.condition-simple-rule-row .tf-mixed-input-root) {
+  :global(.condition-simple-rule-row .tf-mixed-input-root),
+  :global(.condition-simple-rule-row .tf-textarea) {
     width: 100%;
     min-width: 0;
   }
@@ -1131,10 +1314,45 @@
   }
 
   :global(.condition-simple-rule-row .tf-select-input:hover),
-  :global(.condition-simple-rule-row .tf-mixed-input-root:hover) {
+  :global(.condition-simple-rule-row .tf-mixed-input-root:hover),
+  :global(.condition-simple-rule-row .tf-textarea:hover) {
     border-color: var(--tf-border-color-strong);
   }
 
+  .condition-regex-field {
+    position: relative;
+    grid-column: 1 / -1;
+    min-width: 0;
+    width: 100%;
+  }
+
+  :global(.condition-regex-textarea) {
+    min-height: 72px;
+    max-height: 112px;
+    resize: none;
+    overflow-x: hidden;
+    overflow-wrap: anywhere;
+    line-height: 1.5;
+  }
+
+  :global(.condition-regex-textarea[aria-invalid='true']) {
+    border-color: var(--tf-danger-color);
+    box-shadow: 0 0 0 1px var(--tf-danger-soft-border);
+  }
+
+  .condition-regex-error {
+    min-height: 18px;
+    padding-top: 4px;
+    color: transparent;
+    font-size: 12px;
+    line-height: 14px;
+    overflow-wrap: anywhere;
+  }
+
+  .condition-regex-error.visible {
+    color: var(--tf-danger-soft-text);
+  }
+
   :global(.condition-icon-btn) {
     width: 26px;
     height: 26px;
@@ -1208,6 +1426,10 @@
       grid-template-columns: 1fr;
     }
 
+    .condition-regex-field {
+      grid-column: auto;
+    }
+
     .condition-editor-head {
       flex-wrap: wrap;
     }

easyflow-ui-admin/packages/tinyflow-ui/src/components/utils/conditionRegex.test.ts

@@ -0,0 +1,24 @@
+import { describe, expect, it } from 'vitest';
+
+import {
+  CONDITION_REGEX_MAX_LENGTH,
+  getConditionRegexError,
+} from './conditionRegex';
+
+describe('condition regex validation', () => {
+  it('接受常用语法、锚点和安全内联标志', () => {
+    expect(getConditionRegexError('(?i)^[a-z]+-\\d+$')).toBe('');
+  });
+
+  it('拒绝空值和超长表达式', () => {
+    expect(getConditionRegexError('   ')).toBe('请输入正则表达式');
+    expect(
+      getConditionRegexError('a'.repeat(CONDITION_REGEX_MAX_LENGTH + 1)),
+    ).toContain(String(CONDITION_REGEX_MAX_LENGTH));
+  });
+
+  it('不使用浏览器正则语法拦截服务端负责的语法校验', () => {
+    expect(getConditionRegexError('VIP(?=用户)')).toBe('');
+    expect(getConditionRegexError('(VIP)-\\1')).toBe('');
+  });
+});

easyflow-ui-admin/packages/tinyflow-ui/src/components/utils/conditionRegex.ts

@@ -0,0 +1,17 @@
+export const CONDITION_REGEX_MAX_LENGTH = 512;
+
+/**
+ * 返回条件节点正则输入可即时确认的错误。
+ *
+ * 完整语法由后端 RE2/J 校验，避免浏览器正则语法差异误拦截有效配置。
+ */
+export const getConditionRegexError = (value: unknown) => {
+  const regex = String(value ?? '');
+  if (!regex.trim()) {
+    return '请输入正则表达式';
+  }
+  if (regex.length > CONDITION_REGEX_MAX_LENGTH) {
+    return `正则表达式不能超过 ${CONDITION_REGEX_MAX_LENGTH} 个字符`;
+  }
+  return '';
+};

pom.xml

@@ -50,6 +50,7 @@
         <netty.version>4.1.130.Final</netty.version>
         <proguard.version>7.9.1</proguard.version>
         <proguard.maven.plugin.version>2.7.0</proguard.maven.plugin.version>
+        <re2j.version>1.8</re2j.version>
     </properties>
     <dependencyManagement>
         <dependencies>
@@ -61,6 +62,12 @@
                 <scope>compile</scope>
             </dependency>
 
+            <dependency>
+                <groupId>com.google.re2j</groupId>
+                <artifactId>re2j</artifactId>
+                <version>${re2j.version}</version>
+            </dependency>
+
             <dependency>
                 <groupId>org.apache.httpcomponents.client5</groupId>
                 <artifactId>httpclient5</artifactId>