2024.4.11

完成了node的组合条件查询和分页

src/main/java/com/hongliang/videotask/MapperProvider/NodeProvider.java

@@ -0,0 +1,39 @@
+package com.hongliang.videotask.MapperProvider;
+
+import org.apache.ibatis.annotations.Param;
+
+import java.util.Map;
+
+public class NodeProvider {
+    /**
+     * 组合条件查询
+     * @param condition 包含pageNum,pageSize,查询字段项,orderby
+     * @return
+     */
+    public String  GetNodeList(Map<String,Object> condition){
+//        System.out.println("condition:"+condition.toString());
+        // 使用StringBuilder来拼接SQL
+        StringBuilder sb=new StringBuilder();
+        sb.append("select * from node where 1=1");
+
+        //开如拼接查询条件
+        if (condition.containsKey("nodename")){
+            sb.append(" and nodename like concat('%', #{nodename},'%')");
+        }
+
+        //……如果有其他条件，就继续
+
+        //如果有排序
+        if (condition.containsKey("orderby")){
+            sb.append(" order by #{orderby}");
+        }
+
+        //拼接分页
+        if (condition.containsKey("offset") && condition.containsKey("pageSize")){
+            sb.append(" limit #{offset},#{pageSize}");
+        }
+
+        //返回sql语句
+        return sb.toString();
+    }
+}

src/main/java/com/hongliang/videotask/bean/NodeBean.java

@@ -0,0 +1,13 @@
+package com.hongliang.videotask.bean;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+public class NodeBean {
+    private Integer id;
+    private String nodename;
+}

src/main/java/com/hongliang/videotask/controller/NodeControl.java

@@ -0,0 +1,26 @@
+package com.hongliang.videotask.controller;
+
+import com.hongliang.videotask.common.Response;
+import com.hongliang.videotask.common.ResponseCode;
+import com.hongliang.videotask.service.impl.NodeServiceImpl;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import javax.annotation.Resource;
+
+@RestController
+@RequestMapping("/node")
+public class NodeControl {
+    @Resource
+    private NodeServiceImpl nodeService;
+
+    @PostMapping("list")
+    public ResponseEntity<?> GetNodeListByCondition(@RequestBody String condition){
+        System.out.println(condition);
+        return ResponseEntity.ok(new Response(ResponseCode.OK,"success",
+                this.nodeService.GetNodeListByCondition(condition)));
+    }
+}

src/main/java/com/hongliang/videotask/controller/UserControl.java

@@ -3,9 +3,11 @@ package com.hongliang.videotask.controller;
 import cn.dev33.satoken.stp.StpUtil;
 import com.hongliang.videotask.bean.LoginBean;
 import com.hongliang.videotask.bean.LoginResultBean;
+import com.hongliang.videotask.bean.UserBean;
 import com.hongliang.videotask.common.Response;
 import com.hongliang.videotask.common.ResponseCode;
 import com.hongliang.videotask.service.impl.LoginServiceImpl;
+import com.hongliang.videotask.service.impl.UserServiceImpl;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.*;
 
@@ -18,6 +20,8 @@ import java.time.format.DateTimeFormatter;
 public class UserControl {
     @Resource
     private LoginServiceImpl loginService;
+    @Resource
+    private UserServiceImpl userService;
 
     @GetMapping("hello")
     public ResponseEntity<?> hello(){
@@ -48,6 +52,12 @@ public class UserControl {
 
     @PostMapping("logout")
     public ResponseEntity<?> logout(){
+        StpUtil.logout();
         return ResponseEntity.ok(new Response(ResponseCode.OK,"成功退出",null));
     }
+
+    @GetMapping("getuserbyid")
+    public ResponseEntity<?> GetUserByID(@RequestParam("id") int id){
+        return ResponseEntity.ok(new Response(ResponseCode.OK,"成功",userService.GetUserByID(id)));
+    }
 }

src/main/java/com/hongliang/videotask/mappers/NodeMapper.java

@@ -0,0 +1,16 @@
+package com.hongliang.videotask.mappers;
+
+import com.hongliang.videotask.MapperProvider.NodeProvider;
+import com.hongliang.videotask.bean.NodeBean;
+import org.apache.ibatis.annotations.Param;
+import org.apache.ibatis.annotations.SelectProvider;
+import org.springframework.stereotype.Repository;
+
+import java.util.List;
+import java.util.Map;
+
+@Repository
+public interface NodeMapper {
+    @SelectProvider(type= NodeProvider.class,method = "GetNodeList")
+    List<NodeBean> GetNodeListByCondition(Map<String,Object> condition);
+}

src/main/java/com/hongliang/videotask/service/NodeService.java

@@ -0,0 +1,9 @@
+package com.hongliang.videotask.service;
+
+import com.hongliang.videotask.bean.NodeBean;
+
+import java.util.List;
+
+public interface NodeService {
+    List<NodeBean> GetNodeListByCondition(String condition);
+}

src/main/java/com/hongliang/videotask/service/impl/NodeServiceImpl.java

@@ -0,0 +1,25 @@
+package com.hongliang.videotask.service.impl;
+
+import com.alibaba.fastjson.JSON;
+import com.alibaba.fastjson.JSONObject;
+import com.hongliang.videotask.bean.NodeBean;
+import com.hongliang.videotask.mappers.NodeMapper;
+import com.hongliang.videotask.service.NodeService;
+import com.hongliang.videotask.utils.CommonFuction;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+@Service
+public class NodeServiceImpl implements NodeService {
+    @Autowired
+    private NodeMapper nodeMapper;
+
+    public List<NodeBean> GetNodeListByCondition(String condition){
+        Map<String,Object> map= CommonFuction.JsonStringToMapWithOffset(condition);
+        return this.nodeMapper.GetNodeListByCondition(map);
+    }
+}

src/main/java/com/hongliang/videotask/utils/CommonFuction.java

@@ -0,0 +1,27 @@
+package com.hongliang.videotask.utils;
+
+import com.alibaba.fastjson.JSON;
+import com.alibaba.fastjson.JSONObject;
+
+import java.util.HashMap;
+import java.util.Map;
+
+public class CommonFuction {
+    /**
+     * 将一个带pageNum和pageSize的json对象，转换为Map对象，供mybatis的provider使用，并添加offset
+     * @param jsonStr 一个包含查询条件和分页信息的json对象
+     * @return Map<String,Object>对象
+     */
+    public static Map<String,Object> JsonStringToMapWithOffset(String jsonStr){
+        JSONObject jsonObject= JSON.parseObject(jsonStr);
+        Map<String, Object> map = new HashMap<>();
+        for (String key : jsonObject.keySet()) {
+            map.put(key, jsonObject.get(key));
+        }
+        int pagenum=Integer.parseInt( map.get("pageNum").toString());
+        int pagesize=Integer.parseInt(map.get("pageSize").toString());
+        map.put("offset",(pagenum-1)*pagesize);
+//        System.out.println("service condition:"+map.toString());
+        return map;
+    }
+}

src/test/java/LoginTest.java

@@ -1,8 +1,20 @@
 import org.junit.Test;
 
+import java.util.HashMap;
+import java.util.Map;
+
 public class LoginTest {
     @Test
     public void testAdd(){
         System.out.println("this is a test!");
     }
+
+    @Test
+    public void testMap(){
+        Map<String, Object> params = new HashMap<>();
+        params.put("key1", 1);
+        params.put("key2", 2);
+
+        System.out.println(params);
+    }
 }