修改

src/main/java/com/ruoyi/project/zjsgfa/controller/SjZjyFdxnbController.java

 package com.ruoyi.project.zjsgfa.controller;
 
 import java.util.List;
+import java.util.Map;
 import javax.servlet.http.HttpServletResponse;
 import org.springframework.security.access.prepost.PreAuthorize;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -39,11 +40,11 @@ public class SjZjyFdxnbController extends BaseController
      */
     //@PreAuthorize("@ss.hasPermi('system:sjZjyFdxnb:list')")
     @GetMapping("/list")
-    public TableDataInfo list(SjZjyFdxnb sjZjyFdxnb)
+    public AjaxResult list(SjZjyFdxnb sjZjyFdxnb)
     {
 //        startPage();
-        List<SjZjyFdxnb> list = sjZjyFdxnbService.selectSjZjyFdxnbList(sjZjyFdxnb);
-        return getDataTable(list);
+        Map<String, Object> list = sjZjyFdxnbService.selectSjZjyFdxnbList(sjZjyFdxnb);
+        return AjaxResult.success(list);
     }
 
     /**
@@ -54,9 +55,9 @@ public class SjZjyFdxnbController extends BaseController
     @PostMapping("/export")
     public void export(HttpServletResponse response, SjZjyFdxnb sjZjyFdxnb)
     {
-        List<SjZjyFdxnb> list = sjZjyFdxnbService.selectSjZjyFdxnbList(sjZjyFdxnb);
-        ExcelUtil<SjZjyFdxnb> util = new ExcelUtil<SjZjyFdxnb>(SjZjyFdxnb.class);
-        util.exportExcel(response, list, "设计信息-分段钻井液性能设计数据");
+//        List<SjZjyFdxnb> list = sjZjyFdxnbService.selectSjZjyFdxnbList(sjZjyFdxnb);
+//        ExcelUtil<SjZjyFdxnb> util = new ExcelUtil<SjZjyFdxnb>(SjZjyFdxnb.class);
+//        util.exportExcel(response, list, "设计信息-分段钻井液性能设计数据");
     }
 
     /**

src/main/java/com/ruoyi/project/zjsgfa/service/ISjZjyFdxnbService.java

 package com.ruoyi.project.zjsgfa.service;
 
 import java.util.List;
+import java.util.Map;
+
 import com.ruoyi.project.zjsgfa.domain.SjZjyFdxnb;
 
 /**
@@ -25,7 +27,7 @@ public interface ISjZjyFdxnbService
      * @param sjZjyFdxnb 设计信息-分段钻井液性能设计
      * @return 设计信息-分段钻井液性能设计集合
      */
-    public List<SjZjyFdxnb> selectSjZjyFdxnbList(SjZjyFdxnb sjZjyFdxnb);
+    public  Map<String, Object> selectSjZjyFdxnbList(SjZjyFdxnb sjZjyFdxnb);
 
     /**
      * 新增设计信息-分段钻井液性能设计

src/main/java/com/ruoyi/project/zjsgfa/service/impl/SjZjyFdxnbServiceImpl.java

 package com.ruoyi.project.zjsgfa.service.impl;
 
-import java.util.List;
+import java.lang.reflect.Field;
+import java.util.*;
+import java.util.stream.Collectors;
+
+import com.mchange.v1.identicator.IdList;
 import com.ruoyi.common.utils.DateUtils;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
@@ -39,9 +43,68 @@ public class SjZjyFdxnbServiceImpl implements ISjZjyFdxnbService
      * @return 设计信息-分段钻井液性能设计
      */
     @Override
-    public List<SjZjyFdxnb> selectSjZjyFdxnbList(SjZjyFdxnb sjZjyFdxnb)
+    public  Map<String, Object> selectSjZjyFdxnbList(SjZjyFdxnb sjZjyFdxnb)
     {
-        return sjZjyFdxnbMapper.selectSjZjyFdxnbList(sjZjyFdxnb);
+        List<SjZjyFdxnb> list = sjZjyFdxnbMapper.selectSjZjyFdxnbList(sjZjyFdxnb);
+        List<Map<String, String>> fixedItems = Arrays.asList(
+                new HashMap<String, String>() {{ put("name", "密度(g/cm³)"); put("field", "md"); }},
+                new HashMap<String, String>() {{ put("name", "马氏漏斗黏度(s)"); put("field", "msldnd"); }},
+                new HashMap<String, String>() {{ put("name", "API滤失量(ml)"); put("field", "apilsl"); }},
+                new HashMap<String, String>() {{ put("name", "API泥饼(mm)"); put("field", "apinb"); }},
+                new HashMap<String, String>() {{ put("name", "静切力(Pa)"); put("field", "jql"); }},
+                new HashMap<String, String>() {{ put("name", "pH值"); put("field", "ph"); }},
+                new HashMap<String, String>() {{ put("name", "含砂量(%)"); put("field", "hsl"); }},
+                new HashMap<String, String>() {{ put("name", "总固含(%)"); put("field", "zgh"); }},
+                new HashMap<String, String>() {{ put("name", "摩阻系数"); put("field", "mzxs"); }},
+                new HashMap<String, String>() {{ put("name", "动切力(Pa)"); put("field", "dql"); }},
+                new HashMap<String, String>() {{ put("name", "塑性黏度(mPa·s)"); put("field", "sxnd"); }}
+        );
+
+        // 提取井段（去重，按顺序排列）
+        List<String> wellSegments = list.stream()
+                .map(SjZjyFdxnb::getJd)
+                .distinct()
+                .collect(Collectors.toList());
+
+        // 表格数据：每行对应一个固定项目，每列对应一个井段
+        List<Map<String, String>> tableData = new ArrayList<>();
+
+        for (Map<String, String> item : fixedItems) {
+            String itemName = item.get("name"); // 项目名称（如"密度(g/cm³)"）
+            String fieldName = item.get("field"); // 实体类字段名（如"md"）
+
+            Map<String, String> row = new HashMap<>();
+            row.put("项目", itemName); // 第一列固定为项目名称
+
+            // 遍历每个井段，填充对应字段的值
+            for (String segment : wellSegments) {
+                // 找到当前井段的数据对象
+                SjZjyFdxnb segmentData = list.stream()
+                        .filter(d -> segment.equals(d.getJd()))
+                        .findFirst()
+                        .orElse(null);
+
+                // 通过反射获取字段值（避免大量if-else）
+                String value = "";
+                if (segmentData != null) {
+                    try {
+                        Field field = SjZjyFdxnb.class.getDeclaredField(fieldName);
+                        field.setAccessible(true);
+                        Object fieldValue = field.get(segmentData);
+                        value = fieldValue != null ? fieldValue.toString() : "";
+                    } catch (Exception e) {
+                        value = "";
+                    }
+                }
+                row.put(segment, value); // 列名为井段，值为字段值
+            }
+            tableData.add(row);
+        }
+
+        Map<String,Object> map =new HashMap<>();
+        map.put("jds",wellSegments);
+        map.put("data",tableData);
+        return map;
     }
 
     /**