feat(REQ-4624) - 添加获取表单实例数据的逻辑

workflow-engine-common/src/main/java/cn/axzo/workflow/common/enums/FormFieldTypeEnum.java

@@ -2,9 +2,12 @@ package cn.axzo.workflow.common.enums;
 
 import cn.axzo.workflow.common.model.dto.UploadFieldDTO;
 import cn.axzo.workflow.common.model.request.bpmn.task.BpmnTaskDelegateAssigner;
-import com.alibaba.fastjson.TypeReference;
+import com.fasterxml.jackson.core.type.TypeReference;
+import com.fasterxml.jackson.databind.ObjectMapper;
 
 import java.util.Arrays;
+import java.util.Collections;
+import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.Objects;
@@ -72,4 +75,65 @@ public enum FormFieldTypeEnum {
                 .findAny()
                 .orElse(null);
     }
+
+    public static Object parseValue(String type, Object fieldValue, Map<String, Object> fieldParams) {
+        FormFieldTypeEnum fieldType = valueOfType(type);
+        if (fieldType == null) {
+            return null;
+        }
+        TypeReference<?> typeReference = fieldType.getTypeReference();
+        if (typeReference == null || typeReference.getType() == null) {
+            return fieldValue;
+        }
+        if (fieldValue == null) {
+            return null;
+        }
+        ObjectMapper objectMapper = new ObjectMapper();
+        try {
+            // 如果已经是目标类型，直接返回
+            if (objectMapper.constructType(typeReference.getType()).getRawClass().isInstance(fieldValue)) {
+                return fieldValue;
+            }
+            // 先转为字符串再反序列化
+            String json = objectMapper.writeValueAsString(fieldValue);
+            Object defaultValue = handleDefault(fieldParams, json, fieldType);
+            if (Objects.isNull(defaultValue)) {
+                return fieldValue;
+            }
+            if (Objects.equals(type, "decimal")) {
+                // 特殊处理 decimal 类型，确保返回的 Map 包含 unit 字段
+                Map<String, Object> decimalMap = (Map<String, Object>) defaultValue;
+                decimalMap.put("value", fieldValue);
+                decimalMap.put("unit", fieldParams.getOrDefault("unit", ""));
+                return decimalMap;
+            }
+            return objectMapper.readValue(json, typeReference);
+        } catch (Exception e) {
+            throw new RuntimeException("字段值解析失败: " + fieldValue, e);
+        }
+    }
+
+    private static Object handleDefault(Map<String, Object> fieldParams, String json, FormFieldTypeEnum fieldType) {
+        if (Objects.equals("[]", json)) {
+            switch (fieldType) {
+                case upload:
+                case image:
+                case customComponent:
+                case taskOrder:
+                case rectifyOrder:
+                case changeSignatureOrder:
+                case contacts:
+                    // 对于这些类型，返回空列表而不是空字符串
+                    return Collections.emptyList();
+                case decimal:
+                    HashMap<String, Object> map = new HashMap<>();
+                    map.put("value", 0);
+                    map.put("unit", fieldParams.getOrDefault("unit", ""));
+                    return map;
+                default:
+                    return "";
+            }
+        }
+        return null;
+    }
 }

workflow-engine-core/src/main/java/cn/axzo/workflow/core/service/impl/FormCoreServiceImpl.java

@@ -39,6 +39,7 @@ import org.springframework.stereotype.Service;
 import org.springframework.util.CollectionUtils;
 
 import javax.annotation.Resource;
+import java.text.Normalizer;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.HashMap;
@@ -169,7 +170,7 @@ public class FormCoreServiceImpl implements FormCoreService {
             formDataVO.setFieldId(field.getId());
             formDataVO.setFieldType(FormFieldTypeEnum.valueOfType(field.getType()));
             // TODO 根据不同数据类型，进行数据转码
-            formDataVO.setFieldValue(field.getValue());
+            formDataVO.setFieldValue(FormFieldTypeEnum.parseValue(field.getType(), field.getValue(), field.getParams()));
             formDataList.add(formDataVO);
         }
     }