fix: 统一工作流空媒体参数处理

easyflow-ui-admin/app/src/views/ai/workflow/components/WorkflowChatPage.vue

@@ -67,7 +67,10 @@ import {
 } from './workflowExecutionDetails';
 import WorkflowFinalOutput from './WorkflowFinalOutput.vue';
 import WorkflowFormItem from './WorkflowFormItem.vue';
-import { resolveWorkflowFormParameters } from './workflowFormParameters';
+import {
+  buildWorkflowFormInitialValues,
+  resolveWorkflowFormParameters,
+} from './workflowFormParameters';
 import {
   buildWorkflowFormParameterSummaries,
   buildWorkflowFormSubmissionImages,
@@ -349,24 +352,7 @@ async function resolveSharedWorkflowId() {
 }
 
 function initializeAdditionalValues() {
-  const values: Record<string, any> = {};
-  for (const parameter of additionalParameters.value) {
-    const defaultValue = parameter.defaultValue;
-    if (
-      parameter.contentType === 'file' &&
-      (defaultValue === null ||
-        defaultValue === undefined ||
-        defaultValue === '')
-    ) {
-      values[parameter.name] = [];
-    } else if (Array.isArray(defaultValue)) {
-      values[parameter.name] = [...defaultValue];
-    } else if (defaultValue && typeof defaultValue === 'object') {
-      values[parameter.name] = { ...defaultValue };
-    } else {
-      values[parameter.name] = defaultValue ?? '';
-    }
-  }
+  const values = buildWorkflowFormInitialValues(additionalParameters.value);
   defaultExtraValues.value = values;
   extraValues.value = values;
   parametersLocked.value = false;

easyflow-ui-admin/app/src/views/ai/workflow/components/__tests__/workflowFormParameters.test.ts

@@ -1,12 +1,13 @@
 import { describe, expect, it } from 'vitest';
 
 import {
+  buildWorkflowFormInitialValues,
   resolveWorkflowFormParameters,
   resolveWorkflowParameterDisplayName,
   resolveWorkflowParameterLabel,
 } from '../workflowFormParameters';
 
-describe('resolveWorkflowFormParameters', () => {
+describe('workflowFormParameters', () => {
   it('uses the image parameter when a legacy schema still declares text', () => {
     const parameters = resolveWorkflowFormParameters({
       parameters: [
@@ -119,4 +120,33 @@ describe('resolveWorkflowFormParameters', () => {
       '流程开始 > 用户问题123',
     );
   });
+
+  it('builds initial values without submitting blank images', () => {
+    const imageDefault = {
+      sourceType: 'url',
+      url: 'https://example.com/default.png',
+    };
+    const choicesDefault = ['a'];
+    const values = buildWorkflowFormInitialValues([
+      { name: 'files', contentType: 'file', defaultValue: '   ' },
+      { name: 'image', contentType: 'image', defaultValue: '' },
+      {
+        name: 'defaultImage',
+        contentType: 'image',
+        defaultValue: imageDefault,
+      },
+      { name: 'text', contentType: 'text', defaultValue: 'hello' },
+      { name: 'choices', formType: 'checkbox', defaultValue: choicesDefault },
+    ]);
+
+    expect(values).toEqual({
+      files: [],
+      defaultImage: imageDefault,
+      text: 'hello',
+      choices: ['a'],
+    });
+    expect(values).not.toHaveProperty('image');
+    expect(values.defaultImage).not.toBe(imageDefault);
+    expect(values.choices).not.toBe(choicesDefault);
+  });
 });

easyflow-ui-admin/app/src/views/ai/workflow/components/workflowFormParameters.ts

@@ -136,6 +136,48 @@ function resolveDataType(type: string, contentType: string) {
   return 'String';
 }
 
+function isBlankMediaValue(value: unknown) {
+  return (
+    value === null ||
+    value === undefined ||
+    (typeof value === 'string' && value.trim() === '')
+  );
+}
+
+/**
+ * 构建发布运行表单的初始值，确保空媒体参数使用稳定的运行时语义。
+ *
+ * @param parameters 工作流运行参数
+ * @returns 可直接绑定到发布运行表单的初始值
+ */
+export function buildWorkflowFormInitialValues(parameters: any[]) {
+  const values: Record<string, any> = {};
+  for (const parameter of parameters || []) {
+    const defaultValue = parameter?.defaultValue;
+    if (
+      parameter?.contentType === 'file' &&
+      isBlankMediaValue(defaultValue)
+    ) {
+      values[parameter.name] = [];
+      continue;
+    }
+    if (
+      parameter?.contentType === 'image' &&
+      isBlankMediaValue(defaultValue)
+    ) {
+      continue;
+    }
+    if (Array.isArray(defaultValue)) {
+      values[parameter.name] = [...defaultValue];
+    } else if (defaultValue && typeof defaultValue === 'object') {
+      values[parameter.name] = { ...defaultValue };
+    } else {
+      values[parameter.name] = defaultValue ?? '';
+    }
+  }
+  return values;
+}
+
 export function resolveWorkflowFormParameters(workflowParams: any) {
   const schema = Array.isArray(workflowParams?.startFormSchema)
     ? workflowParams.startFormSchema