指标库：根据表名列名分页查询数据

src/main/java/iet/ustb/sf/controller/TableColumnController.java

@@ -44,4 +44,11 @@ public class TableColumnController {
         List<ColumnVo> result = tableColumnService.getColumnsByTableName(tableName);
         return R.ok(result);
     }
+
+    @Operation(summary = "根据表名列名分页查询数据")
+    @PostMapping("/getDataByTableName")
+    public R<Page<?>> getDataByTableName(@RequestBody JSONObject params) {
+        Page<?> result = tableColumnService.getDataByTableName(params);
+        return R.ok(result);
+    }
 }

src/main/java/iet/ustb/sf/service/TableColumnService.java

@@ -23,4 +23,6 @@ public interface TableColumnService extends IService<TableColumn> {
     List<TableVo> getTablesInfo();
 
     List<ColumnVo> getColumnsByTableName(String tableName);
+
+    Page<?> getDataByTableName(JSONObject params);
 }

src/main/java/iet/ustb/sf/service/impl/TableColumnServiceImpl.java

@@ -1,7 +1,10 @@
 package iet.ustb.sf.service.impl;
 
+import com.alibaba.fastjson.JSONObject;
 import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
+import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
 import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
+import com.baomidou.mybatisplus.extension.toolkit.SqlRunner;
 import iet.ustb.sf.domain.Columns;
 import iet.ustb.sf.domain.TableColumn;
 import iet.ustb.sf.domain.Tables;
@@ -14,6 +17,7 @@ import iet.ustb.sf.util.CheckUtils;
 import iet.ustb.sf.vo.ColumnVo;
 import iet.ustb.sf.vo.TableVo;
 import jakarta.annotation.Resource;
+import org.apache.commons.lang3.StringUtils;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
@@ -118,6 +122,28 @@ public class TableColumnServiceImpl extends ServiceImpl<TableColumnMapper, Table
         CheckUtils.checkTableName(tableName);
         return tableColumnMapper.getColumnsByTableName(tableName);
     }
+
+    @Override
+    public Page<?> getDataByTableName(JSONObject params) {
+        String columns = params.getString("columns");
+        String tableName = params.getString("tableName");
+        int pageIndex = Optional.ofNullable(params.getInteger("pageIndex")).orElse(1);
+        int pageSize = Optional.ofNullable(params.getInteger("pageSize")).orElse(10);
+        if (StringUtils.isEmpty(columns)) {
+            return new Page<>(pageIndex, pageSize);
+        }
+        CheckUtils.checkColumns(columns, tableName);
+
+        String countSql = "SELECT COUNT(1) FROM " + tableName;
+        long total = SqlRunner.db().selectCount(countSql);
+        Page<Map<String, Object>> page = new Page<>(pageIndex, pageSize);
+        page.setTotal(total);
+
+        long offset = (long) (pageIndex - 1) * pageSize;
+        String sql = "SELECT " + columns + " FROM " + tableName + " LIMIT " + pageSize + " OFFSET " + offset;
+
+        return SqlRunner.db().selectPage(page, sql);
+    }
 }
 
 

src/main/java/iet/ustb/sf/util/CheckUtils.java

@@ -39,4 +39,16 @@ public class CheckUtils {
         long cnt = SqlRunner.db().selectCount(sql);
         ThrowUtils.throwIf(cnt <= 0, new RuntimeException("表" + tableName + "不存在！"));
     }
+
+    /**
+     * 列名验证
+     *
+     * @param columns   列名（多个列表以逗号分割）
+     * @param tableName 表名
+     */
+    public static void checkColumns(String columns, String tableName) {
+        checkEmpty(columns, "列名");
+        String sql = "SELECT " + columns + " FROM " + tableName + " limit 5";
+        SqlRunner.db().selectList(sql);
+    }
 }