系统字典通过父编码查子项

src/main/java/com/gunshi/project/xyt/controller/SysDictBController.java

@@ -106,6 +106,12 @@ public class SysDictBController {
         return R.ok(query.list());
     }
 
+    @Operation(summary = "列表 通过父编码查子项")
+    @GetMapping("/listByCd")
+    public R<List<SysDictB>> listByCd(@Schema(name = "dictCd",description = "父编码") @RequestParam(name = "dictCd") String dictCd) {
+        return R.ok(service.listByCd(dictCd));
+    }
+
     @Operation(summary = "分页 只查父项")
     @PostMapping("/page")
     public R<Page<SysDictB>> page(@RequestBody GenericPageParams page) {

src/main/java/com/gunshi/project/xyt/mapper/SysDictBMapper.java

@@ -3,6 +3,10 @@ package com.gunshi.project.xyt.mapper;
 import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 import com.gunshi.project.xyt.model.SysDictB;
 import org.apache.ibatis.annotations.Mapper;
+import org.apache.ibatis.annotations.Param;
+import org.apache.ibatis.annotations.Select;
+
+import java.util.List;
 
 /**
  * 描述: 系统字典表
@@ -12,4 +16,10 @@ import org.apache.ibatis.annotations.Mapper;
 @Mapper
 public interface SysDictBMapper extends BaseMapper<SysDictB> {
 
+    @Select("""
+            <script>
+                select t.* from public.sys_dict_b t where pid = (select id from public.sys_dict_b where dict_cd = #{dictCd})
+            </script>
+            """)
+    List<SysDictB> listByCd(@Param("dictCd") String dictCd);
 }

src/main/java/com/gunshi/project/xyt/service/SysDictBService.java

@@ -52,6 +52,9 @@ public class SysDictBService extends ServiceImpl<SysDictBMapper, SysDictB>
         return sorteds;
     }
 
+    public List<SysDictB> listByCd(String dictCd) {
+        return this.baseMapper.listByCd(dictCd);
+    }
 }