fix: 优化过鱼设施草稿数据日志联动

backend/src/main/java/com/yfd/platform/config/JacksonConfig.java

@@ -0,0 +1,19 @@
+package com.yfd.platform.config;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.SerializationFeature;
+import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class JacksonConfig {
+    
+    @Bean
+    public ObjectMapper objectMapper() {
+        ObjectMapper mapper = new ObjectMapper();
+        mapper.registerModule(new JavaTimeModule());
+        mapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
+        return mapper;
+    }
+}

backend/src/main/java/com/yfd/platform/data/controller/ApprovalChangeLogController.java

@@ -1,8 +1,12 @@
 package com.yfd.platform.data.controller;
 
+import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
+import com.yfd.platform.common.DataSourceRequest;
 import com.yfd.platform.config.ResponseResult;
 import com.yfd.platform.data.domain.ApprovalChangeLog;
+import com.yfd.platform.data.domain.ApprovalLog;
 import com.yfd.platform.data.service.IApprovalChangeLogService;
+import com.yfd.platform.utils.DataSourceRequestUtil;
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
 import jakarta.annotation.Resource;
@@ -31,6 +35,13 @@ public class ApprovalChangeLogController {
         return ResponseResult.successData(list);
     }
 
+    @PostMapping("/queryPageList")
+    @Operation(summary = "分页查询变更记录列表(通用)")
+    public ResponseResult queryPageList(@RequestBody DataSourceRequest request) {
+        Page<ApprovalChangeLog> approvalChangeLogPage = DataSourceRequestUtil.executeQuery(request, ApprovalChangeLog.class, approvalChangeLogService);
+        return ResponseResult.successData(approvalChangeLogPage);
+    }
+
     @GetMapping("/getByApprovalId")
     @Operation(summary = "根据审批批次ID查询变更记录")
     public ResponseResult getByApprovalId(@RequestParam String approvalId) {

backend/src/main/java/com/yfd/platform/data/controller/ApprovalLogController.java

@@ -1,8 +1,12 @@
 package com.yfd.platform.data.controller;
 
+import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
+import com.yfd.platform.common.DataSourceRequest;
 import com.yfd.platform.config.ResponseResult;
 import com.yfd.platform.data.domain.ApprovalLog;
+import com.yfd.platform.data.domain.ApprovalMain;
 import com.yfd.platform.data.service.IApprovalLogService;
+import com.yfd.platform.utils.DataSourceRequestUtil;
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
 import jakarta.annotation.Resource;
@@ -31,6 +35,14 @@ public class ApprovalLogController {
         return ResponseResult.successData(list);
     }
 
+    @PostMapping("/queryPageList")
+    @Operation(summary = "分页查询审批日志列表(通用)")
+    public ResponseResult queryPageList(@RequestBody DataSourceRequest request) {
+        Page<ApprovalLog> approvalLogPage = DataSourceRequestUtil.executeQuery(request, ApprovalLog.class, approvalLogService);
+        return ResponseResult.successData(approvalLogPage);
+    }
+
+
     @GetMapping("/getByApprovalId")
     @Operation(summary = "根据审批批次ID查询日志")
     public ResponseResult getByApprovalId(@RequestParam String approvalId) {

backend/src/main/java/com/yfd/platform/data/controller/ApprovalMainController.java

@@ -1,9 +1,11 @@
 package com.yfd.platform.data.controller;
 
 import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
+import com.yfd.platform.common.DataSourceRequest;
 import com.yfd.platform.config.ResponseResult;
 import com.yfd.platform.data.domain.ApprovalMain;
 import com.yfd.platform.data.service.IApprovalMainService;
+import com.yfd.platform.utils.DataSourceRequestUtil;
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
 import jakarta.annotation.Resource;
@@ -36,6 +38,15 @@ public class ApprovalMainController {
         return ResponseResult.successData(result);
     }
 
+    @PostMapping("/queryPageList")
+    @Operation(summary = "分页查询审批列表(通用)")
+    public ResponseResult queryPageList(@RequestBody DataSourceRequest request) {
+        Page<ApprovalMain> approvalMainPage = DataSourceRequestUtil.executeQuery(request, ApprovalMain.class, approvalMainService);
+        return ResponseResult.successData(approvalMainPage);
+    }
+
+
+
     @GetMapping("/getById")
     @Operation(summary = "根据ID查询审批")
     public ResponseResult getById(@RequestParam Long id) {

backend/src/main/java/com/yfd/platform/data/controller/FishDraftDataController.java

@@ -7,11 +7,14 @@ import com.yfd.platform.data.domain.FishDraftData;
 import com.yfd.platform.data.domain.FishImportRequest;
 import com.yfd.platform.data.domain.FishImportResult;
 import com.yfd.platform.data.domain.ImportTask;
+import com.yfd.platform.data.domain.BatchApproveRequest;
+import com.yfd.platform.data.domain.BatchRejectRequest;
 import com.yfd.platform.data.domain.vo.FishDraftDataVO;
 import com.yfd.platform.data.service.IFishDraftDataService;
 import com.yfd.platform.data.service.IFishImportService;
 import com.yfd.platform.data.service.IImportTaskService;
 import com.yfd.platform.utils.KendoUtil;
+import com.yfd.platform.utils.SecurityUtils;
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
 import jakarta.annotation.Resource;
@@ -91,6 +94,19 @@ public class FishDraftDataController {
         return result ? ResponseResult.success("保存成功") : ResponseResult.error("保存失败");
     }
 
+    @PostMapping("/batchSaveDraft")
+    @Operation(summary = "批量保存草稿")
+    public ResponseResult saveDraft(@RequestBody List<FishDraftData> fishDraftDataList) {
+
+        fishDraftDataList.forEach(fishDraftData -> {
+            fishDraftData.setStatus("DRAFT");
+            fishDraftData.setDeletedFlag(0);
+            fishDraftData.setLockFlag(0);
+        });
+        boolean result = fishDraftDataService.saveBatch(fishDraftDataList);
+        return result ? ResponseResult.success("保存成功") : ResponseResult.error("保存失败");
+    }
+
     @PostMapping("/updateDraft")
     @Operation(summary = "更新草稿")
     public ResponseResult updateDraft(@RequestBody FishDraftData fishDraftData) {
@@ -130,17 +146,15 @@ public class FishDraftDataController {
 
     @PostMapping("/batchApprove")
     @Operation(summary = "批量审批通过")
-    public ResponseResult batchApprove(@RequestBody List<String> ids,
+    public ResponseResult batchApprove(@RequestBody BatchApproveRequest request) {
-                                       @RequestParam(required = false) String approveComment) {
+        boolean result = fishDraftDataService.batchApprove(request.getIds(), request.getApproveComment());
-        boolean result = fishDraftDataService.batchApprove(ids, approveComment);
         return result ? ResponseResult.success("审批通过") : ResponseResult.error("审批失败");
     }
 
     @PostMapping("/reject")
     @Operation(summary = "审批驳回")
-    public ResponseResult batchReject(@RequestParam String id,
+    public ResponseResult batchReject(@RequestBody BatchRejectRequest request) {
-                                      @RequestParam String rejectReason) {
+        boolean result = fishDraftDataService.batchReject(request.getId(), request.getRejectReason());
-        boolean result = fishDraftDataService.batchReject(id, rejectReason);
         return result ? ResponseResult.success("驳回成功") : ResponseResult.error("驳回失败");
     }
 
@@ -168,9 +182,9 @@ public class FishDraftDataController {
     }
 
     @PostMapping("/update")
-    @Operation(summary = "修改过鱼数据")
+    @Operation(summary = "审批人修改过鱼数据（记录变更日志）")
     public ResponseResult update(@RequestBody FishDraftData fishDraftData) {
-        boolean result = fishDraftDataService.updateById(fishDraftData);
+        boolean result = fishDraftDataService.updateByIdWithLog(fishDraftData);
         return result ? ResponseResult.success("修改成功") : ResponseResult.error("修改失败");
     }
 
@@ -190,8 +204,7 @@ public class FishDraftDataController {
 
     @PostMapping("/importZip")
     @Operation(summary = "导入ZIP过鱼数据（每个用户同时只能进行一次导入）")
-    public ResponseResult importZip(@RequestParam("file") MultipartFile file,
+    public ResponseResult importZip(@RequestParam("file") MultipartFile file) {
-                                    @RequestParam String uploadUserId) {
         if (file == null || file.isEmpty()) {
             return ResponseResult.error("请上传文件");
         }
@@ -199,7 +212,7 @@ public class FishDraftDataController {
         if (fileName == null || (!fileName.endsWith(".zip"))) {
             return ResponseResult.error("请上传ZIP文件(.zip)");
         }
-
+        String uploadUserId = SecurityUtils.getUserId();
         if (importTaskService.hasImportingTask(uploadUserId)) {
             return ResponseResult.error("您有正在进行的导入任务，请等待完成后重试");
         }

backend/src/main/java/com/yfd/platform/data/domain/BatchApproveRequest.java

@@ -0,0 +1,20 @@
+package com.yfd.platform.data.domain;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.Data;
+
+import java.util.List;
+
+/**
+ * 批量审批请求参数
+ */
+@Data
+@Schema(description = "批量审批请求参数")
+public class BatchApproveRequest {
+
+    @Schema(description = "草稿数据ID列表")
+    private List<String> ids;
+
+    @Schema(description = "审批意见")
+    private String approveComment;
+}

backend/src/main/java/com/yfd/platform/data/domain/BatchRejectRequest.java

@@ -0,0 +1,18 @@
+package com.yfd.platform.data.domain;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.Data;
+
+/**
+ * 审批驳回请求参数
+ */
+@Data
+@Schema(description = "审批驳回请求参数")
+public class BatchRejectRequest {
+
+    @Schema(description = "草稿数据ID")
+    private String id;
+
+    @Schema(description = "驳回原因")
+    private String rejectReason;
+}

backend/src/main/java/com/yfd/platform/data/domain/FishDraftData.java

@@ -106,7 +106,7 @@ public class FishDraftData implements Serializable {
     /**
      * 审批批次ID
      */
-    private Long approvalId;
+    private String approvalId;
 
     /**
      * 状态（DRAFT未提交 / SUBMITTED已提交 / APPROVED已通过 / REJECTED已驳回）

backend/src/main/java/com/yfd/platform/data/domain/vo/FishDraftDataVO.java

@@ -110,7 +110,7 @@ public class FishDraftDataVO implements Serializable {
     /**
      * 审批批次ID
      */
-    private Long approvalId;
+    private String approvalId;
 
     /**
      * 状态（DRAFT未提交 / SUBMITTED已提交 / APPROVED已通过 / REJECTED已驳回）

backend/src/main/java/com/yfd/platform/data/service/IFishDraftDataService.java

@@ -86,4 +86,9 @@ public interface IFishDraftDataService extends IService<FishDraftData> {
     boolean unlockDraft(String id);
 
     boolean batchRemoveDraft(List<String> ids);
+
+    /**
+     * 审批人修改数据并记录变更日志
+     */
+    boolean updateByIdWithLog(FishDraftData fishDraftData);
 }

backend/src/main/java/com/yfd/platform/data/service/impl/FishDraftDataServiceImpl.java

@@ -7,22 +7,24 @@ import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
 import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
 import com.yfd.platform.common.DataSourceLoadOptionsBase;
 import com.yfd.platform.common.DataSourceRequest;
+import com.yfd.platform.data.domain.ApprovalMain;
 import com.yfd.platform.data.domain.FishDraftData;
 import com.yfd.platform.data.domain.vo.FishDraftDataVO;
 import com.yfd.platform.data.mapper.FishDraftDataMapper;
 import com.yfd.platform.data.service.IApprovalChangeLogService;
+import com.yfd.platform.data.service.IApprovalLogService;
 import com.yfd.platform.data.service.IApprovalMainService;
 import com.yfd.platform.data.service.IFishDraftDataService;
 import com.yfd.platform.utils.KendoUtil;
 import com.yfd.platform.utils.QgcQueryWrapperUtil;
 import com.yfd.platform.utils.SecurityUtils;
+import com.fasterxml.jackson.databind.ObjectMapper;
 import jakarta.annotation.Resource;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 import org.springframework.util.StringUtils;
 
-import java.util.Date;
+import java.util.*;
-import java.util.List;
 
 /**
  * <p>
@@ -41,6 +43,12 @@ public class FishDraftDataServiceImpl extends ServiceImpl<FishDraftDataMapper, F
     @Resource
     private IApprovalChangeLogService approvalChangeLogService;
 
+    @Resource
+    private IApprovalLogService approvalLogService;
+
+    @Resource
+    private ObjectMapper objectMapper;
+
     @Override
     public Page<FishDraftDataVO> queryPageList(DataSourceRequest dataSourceRequest) {
         Page<FishDraftDataVO> page = KendoUtil.getPage(dataSourceRequest);
@@ -110,8 +118,28 @@ public class FishDraftDataServiceImpl extends ServiceImpl<FishDraftDataMapper, F
         if (existing == null || existing.getLockFlag() == 1) {
             return false;
         }
-        fishDraftData.setStatus("DRAFT");
+        boolean isSubmitted = existing.getApprovalId() != null && StrUtil.isNotBlank(existing.getApprovalId());
-        return this.updateById(fishDraftData);
+        try {
+            String beforeJson = objectMapper.writeValueAsString(existing);
+            fishDraftData.setStatus(existing.getStatus());
+            boolean result = this.updateById(fishDraftData);
+            if (result && isSubmitted) {
+                FishDraftData after = this.getById(fishDraftData.getId());
+                String afterJson = objectMapper.writeValueAsString(after);
+                String changeJson = buildChangeJson(beforeJson, afterJson, existing, after);
+                approvalChangeLogService.logChange(
+                        existing.getApprovalId(),
+                        fishDraftData.getId(),
+                        "FISH",
+                        "UPDATE",
+                        changeJson,
+                        SecurityUtils.getUserId()
+                );
+            }
+            return result;
+        } catch (Exception e) {
+            throw new RuntimeException("记录变更日志失败", e);
+        }
     }
 
     @Override
@@ -147,22 +175,53 @@ public class FishDraftDataServiceImpl extends ServiceImpl<FishDraftDataMapper, F
         if (fishDraftData == null || fishDraftData.getLockFlag() == 1) {
             return false;
         }
+
+        ApprovalMain approvalMain = new ApprovalMain();
+        approvalMain.setApprovalNo("APR" + System.currentTimeMillis());
+        approvalMain.setBizType("FISH");
+        approvalMain.setDataCount(1);
+        approvalMain.setApplyUserId(operatorId);
+        approvalMain.setApplyTime(new Date());
+        approvalMain.setStatus("PENDING");
+        approvalMainService.save(approvalMain);
+
+        fishDraftData.setApprovalId(approvalMain.getId());
         fishDraftData.setStatus("SUBMITTED");
         fishDraftData.setSubmitTime(new Date());
-        return this.updateById(fishDraftData);
+        boolean result = this.updateById(fishDraftData);
+        if (result) {
+            approvalLogService.logSubmit(approvalMain.getId(), operatorId, "提交草稿");
+        }
+        return result;
     }
 
     @Override
     @Transactional(rollbackFor = Exception.class)
     public boolean submitDrafts(List<String> ids) {
-        for (String id : ids) {
+        if (ids == null || ids.isEmpty()) {
-            FishDraftData fishDraftData = this.getById(id);
+            return false;
-            if (fishDraftData != null && fishDraftData.getLockFlag() == 0) {
-                fishDraftData.setStatus("SUBMITTED");
-                fishDraftData.setSubmitTime(new Date());
-                this.updateById(fishDraftData);
-            }
         }
+        String operatorId = SecurityUtils.getUserId();
+
+        ApprovalMain approvalMain = new ApprovalMain();
+        approvalMain.setApprovalNo("APR" + System.currentTimeMillis());
+        approvalMain.setBizType("FISH");
+        approvalMain.setDataCount(ids.size());
+        approvalMain.setApplyUserId(operatorId);
+        approvalMain.setApplyTime(new Date());
+        approvalMain.setStatus("PENDING");
+        approvalMainService.save(approvalMain);
+
+        LambdaUpdateWrapper<FishDraftData> updateWrapper = new LambdaUpdateWrapper<>();
+        updateWrapper.in(FishDraftData::getId, ids);
+        updateWrapper.eq(FishDraftData::getLockFlag, 0);
+        updateWrapper.set(FishDraftData::getApprovalId, approvalMain.getId());
+        updateWrapper.set(FishDraftData::getStatus, "SUBMITTED");
+        updateWrapper.set(FishDraftData::getSubmitTime, new Date());
+        this.update(updateWrapper);
+
+
+        approvalLogService.logSubmit(approvalMain.getId(), operatorId, "批量提交草稿，共" + ids.size() + "条");
         return true;
     }
 
@@ -174,15 +233,41 @@ public class FishDraftDataServiceImpl extends ServiceImpl<FishDraftDataMapper, F
             return false;
         }
         Date now = new Date();
-        for (String id : ids) {
+        String operatorId = SecurityUtils.getUserId();
-            FishDraftData fishDraftData = this.getById(id);
+
-            if (fishDraftData != null && "SUBMITTED".equals(fishDraftData.getStatus())) {
+        List<FishDraftData> dataList = this.listByIds(ids);
-                fishDraftData.setStatus("APPROVED");
+        Set<String> processedApprovalIds = new HashSet<>();
-                fishDraftData.setApproveTime(now);
+        List<String> validIds = new ArrayList<>();
-                fishDraftData.setUpdatedBy(SecurityUtils.getUserId());
+
-                this.updateById(fishDraftData);
+        for (FishDraftData fishDraftData : dataList) {
+            if ("SUBMITTED".equals(fishDraftData.getStatus())) {
+                validIds.add(fishDraftData.getId());
+                if (fishDraftData.getApprovalId() != null) {
+                    processedApprovalIds.add(fishDraftData.getApprovalId());
                 }
             }
+        }
+
+        if (!validIds.isEmpty()) {
+            LambdaUpdateWrapper<FishDraftData> updateWrapper = new LambdaUpdateWrapper<>();
+            updateWrapper.in(FishDraftData::getId, validIds);
+            updateWrapper.set(FishDraftData::getStatus, "APPROVED");
+            updateWrapper.set(FishDraftData::getApproveTime, now);
+            updateWrapper.set(FishDraftData::getUpdatedBy, operatorId);
+            this.update(updateWrapper);
+            for (String approvalId : processedApprovalIds) {
+                ApprovalMain approvalMain = approvalMainService.getById(approvalId);
+                approvalLogService.logApprove(approvalId, SecurityUtils.getUserId(), approveComment);
+                if (approvalMain != null) {
+                    approvalMain.setStatus("APPROVED");
+                    approvalMain.setApproverId(operatorId);
+                    approvalMain.setApproveTime(now);
+                    approvalMain.setRemark(approveComment);
+                    approvalMainService.updateById(approvalMain);
+                }
+            }
+        }
+
         return true;
     }
 
@@ -196,12 +281,25 @@ public class FishDraftDataServiceImpl extends ServiceImpl<FishDraftDataMapper, F
             throw new IllegalArgumentException("驳回原因不能为空");
         }
         Date now = new Date();
+        String operatorId = SecurityUtils.getUserId();
         FishDraftData fishDraftData = this.getById(id);
         if (fishDraftData != null && "SUBMITTED".equals(fishDraftData.getStatus())) {
             fishDraftData.setStatus("REJECTED");
             fishDraftData.setApproveTime(now);
-            fishDraftData.setUpdatedBy(SecurityUtils.getUserId());
+            fishDraftData.setUpdatedBy(operatorId);
-            this.updateById(fishDraftData);
+            boolean result = this.updateById(fishDraftData);
+            if (result && fishDraftData.getApprovalId() != null) {
+                approvalLogService.logReject(fishDraftData.getApprovalId(), operatorId, rejectReason);
+                ApprovalMain approvalMain = approvalMainService.getById(fishDraftData.getApprovalId());
+                if (approvalMain != null) {
+                    approvalMain.setStatus("REJECTED");
+                    approvalMain.setApproverId(operatorId);
+                    approvalMain.setApproveTime(now);
+                    approvalMain.setRemark(rejectReason);
+                    approvalMainService.updateById(approvalMain);
+                }
+            }
+            return result;
         }
         return true;
     }
@@ -228,5 +326,66 @@ public class FishDraftDataServiceImpl extends ServiceImpl<FishDraftDataMapper, F
         return this.updateById(fishDraftData);
     }
 
+    @Override
+    @Transactional(rollbackFor = Exception.class)
+    public boolean updateByIdWithLog(FishDraftData fishDraftData) {
+        FishDraftData existing = this.getById(fishDraftData.getId());
+        if (existing == null) {
+            return false;
+        }
+        if (existing.getApprovalId() == null || StrUtil.isBlank(existing.getApprovalId())) {
+            return this.updateById(fishDraftData);
+        }
+        try {
+            String beforeJson = objectMapper.writeValueAsString(existing);
+            boolean result = this.updateById(fishDraftData);
+            if (result) {
+                FishDraftData after = this.getById(fishDraftData.getId());
+                String afterJson = objectMapper.writeValueAsString(after);
+                String changeJson = buildChangeJson(beforeJson, afterJson, existing, after);
+                approvalChangeLogService.logChange(
+                        existing.getApprovalId(),
+                        fishDraftData.getId(),
+                        "FISH",
+                        "UPDATE",
+                        changeJson,
+                        SecurityUtils.getUserId()
+                );
+            }
+            return result;
+        } catch (Exception e) {
+            throw new RuntimeException("记录变更日志失败", e);
+        }
+    }
+
+    private String buildChangeJson(String beforeJson, String afterJson, FishDraftData before, FishDraftData after) {
+        try {
+            Map<String, Object> changeInfo = new LinkedHashMap<>();
+            changeInfo.put("before", objectMapper.readTree(beforeJson));
+            changeInfo.put("after", objectMapper.readTree(afterJson));
+            List<String> changedFields = new ArrayList<>();
+            if (!Objects.equals(before.getStcd(), after.getStcd())) changedFields.add("stcd");
+            if (!Objects.equals(before.getTm(), after.getTm())) changedFields.add("tm");
+            if (!Objects.equals(before.getFtp(), after.getFtp())) changedFields.add("ftp");
+            if (!Objects.equals(before.getFsz(), after.getFsz())) changedFields.add("fsz");
+            if (!Objects.equals(before.getFcnt(), after.getFcnt())) changedFields.add("fcnt");
+            if (!Objects.equals(before.getFwet(), after.getFwet())) changedFields.add("fwet");
+            if (!Objects.equals(before.getStrdt(), after.getStrdt())) changedFields.add("strdt");
+            if (!Objects.equals(before.getEnddt(), after.getEnddt())) changedFields.add("enddt");
+            if (!Objects.equals(before.getDirection(), after.getDirection())) changedFields.add("direction");
+            if (!Objects.equals(before.getYr(), after.getYr())) changedFields.add("yr");
+            if (!Objects.equals(before.getMouth(), after.getMouth())) changedFields.add("mouth");
+            if (!Objects.equals(before.getVdpth(), after.getVdpth())) changedFields.add("vdpth");
+            if (!Objects.equals(before.getPicpth(), after.getPicpth())) changedFields.add("picpth");
+            if (!Objects.equals(before.getIsfs(), after.getIsfs())) changedFields.add("isfs");
+            if (!Objects.equals(before.getSourceType(), after.getSourceType())) changedFields.add("sourceType");
+            if (!Objects.equals(before.getStatus(), after.getStatus())) changedFields.add("status");
+            changeInfo.put("changed_fields", changedFields);
+            return objectMapper.writeValueAsString(changeInfo);
+        } catch (Exception e) {
+            return "{}";
+        }
+    }
+
 
 }