更改用户主页查询逻辑

src/com/hellogithub/dao/supportDao.java

@@ -0,0 +1,59 @@
+package com.hellogithub.dao;
+
+import com.hellogithub.entity.projectEntity;
+import com.hellogithub.entity.supportEntity;
+import com.hellogithub.utils.JdbcUtils;
+import org.apache.commons.dbutils.QueryRunner;
+import org.apache.commons.dbutils.handlers.BeanHandler;
+
+import java.sql.Connection;
+import java.sql.SQLException;
+
+public class supportDao {
+    public supportEntity selectSupport(int userId,int projectId)
+    {
+        int num;
+        supportEntity supportEntity =null;
+        try{
+            Connection conn = JdbcUtils.getConnection();
+            QueryRunner runner = new QueryRunner();
+            String sql = "select * from support where isValid = 1 and userId = ? and projectId = ?";
+            supportEntity = runner.query(conn, sql,new BeanHandler<>(supportEntity.class) , userId,projectId);
+            conn.close();
+        }catch (SQLException e){
+            throw new RuntimeException(e);
+        }
+
+        return supportEntity;
+    }
+    public int insertSupport(int userId,int projectId)
+    {
+        int num;
+        try{
+            Connection conn = JdbcUtils.getConnection();
+            QueryRunner runner = new QueryRunner();
+            String sql = "insert into support (userId,projectId,isValid) VALUES (?,?,1) ";
+            num = runner.update(conn, sql, userId,projectId);
+            conn.close();
+        }catch (SQLException e){
+            throw new RuntimeException(e);
+        }
+
+        return num;
+    }
+    public int deleteSupport(int userId,int projectId)
+    {
+        int num;
+        try{
+            Connection conn = JdbcUtils.getConnection();
+            QueryRunner runner = new QueryRunner();
+            String sql = "delete from  support  where isValid = 1 and userId = ? and projectId =?";
+            num  = runner.update(conn, sql , userId,projectId);
+            conn.close();
+        }catch (SQLException e){
+            throw new RuntimeException(e);
+        }
+
+        return num;
+    }
+}

src/com/hellogithub/entity/supportEntity.java

@@ -0,0 +1,41 @@
+package com.hellogithub.entity;
+
+public class supportEntity {
+    int userId;
+    int projectId;
+    int isValid;
+
+    int id;
+
+    public int getUserId() {
+        return userId;
+    }
+
+    public void setUserId(int userId) {
+        this.userId = userId;
+    }
+
+    public int getProjectId() {
+        return projectId;
+    }
+
+    public void setProjectId(int projectId) {
+        this.projectId = projectId;
+    }
+
+    public int getIsValid() {
+        return isValid;
+    }
+
+    public void setIsValid(int isValid) {
+        this.isValid = isValid;
+    }
+
+    public int getId() {
+        return id;
+    }
+
+    public void setId(int id) {
+        this.id = id;
+    }
+}

src/com/hellogithub/service/supprotService.java

@@ -0,0 +1,49 @@
+package com.hellogithub.service;
+
+import com.hellogithub.dao.supportDao;
+import com.hellogithub.entity.supportEntity;
+
+public class supprotService {
+    private supportDao supportDao = new supportDao();
+
+    public int retNum(int userId,int projectId){
+        int num ;
+        supportEntity supportEntity = supportDao.selectSupport(userId,projectId);
+        if(supportEntity == null)
+        {
+           num =0;
+        }
+        else{
+            num = 1;
+        }
+        return num ;
+    }
+
+    public String  insertSupport(int userId , int projectId)
+    {
+        String tip;
+        int num = supportDao.insertSupport(userId,projectId);
+        if(num == 1)
+        {
+            tip="点赞成功";
+        }
+        else{
+            tip="点赞失败";
+        }
+       return tip;
+    }
+
+    public String  deleteSupport(int userId , int projectId)
+    {
+        String tip;
+        int num = supportDao.deleteSupport(userId,projectId);
+        if(num == 1)
+        {
+            tip="删除成功";
+        }
+        else{
+            tip="删除失败";
+        }
+        return tip;
+    }
+}

src/com/hellogithub/servlet/userDetailServlet.java

@@ -47,20 +47,21 @@ public class userDetailServlet extends HttpServlet {
         resp.setContentType("application/json;charset=UTF-8");
 
         PrintWriter writer = resp.getWriter();
-        HttpSession session = req.getSession();
+        String jsonString="";
-        userEntity userEntity=(userEntity)session.getAttribute("user");
+        String username = req.getParameter("username");
-        if(userEntity == null){
+        jsonString = JSONObject.toJSONString(userService.selectUserByName(username));
-            setResultError("用户暂未登录", writer);
+        if(jsonString.equals(""))
+        {
+            setResultError("查询失败",writer);
         }else{
-            String name = userEntity.getUserName();
             Map<String,String> dataMap= new HashMap<>();
-            int id = userService.selectIdByName(name);
+            int id = userService.selectIdByName(username);
             dataMap.put("comment",commentService.selectByUserId(id));
             dataMap.put("project",projectService.retProjectByUserId(id));
-            String jsonString = JSONObject.toJSONString(dataMap);
+            jsonString = JSONObject.toJSONString(dataMap);
             writer.println(jsonString);
+            setResultOK("查询失败",writer);
         }
-        writer.close();
     }
 
     public void setResult(Integer code, String msg, PrintWriter writer) {