返回用户所有信息

src/com/hellogithub/dao/UserDao.java

@@ -277,5 +277,19 @@ public class UserDao {
 
         return label;
     }
+    public userEntity selectUserByName(String name )
+    {
+        userEntity userEntity;
+        try {
+            Connection conn = JdbcUtils.getConnection();
+            QueryRunner runner = new QueryRunner();
+            String sql = "select * from user where userName=? and isValid = 1";
+            userEntity  = runner.query(conn, sql, new BeanHandler<>(userEntity.class),name);
+            userEntity.setUserPassword("*");
+        } catch (SQLException e) {
+            throw new RuntimeException(e);
+        }
 
+        return userEntity;
+    }
 }

src/com/hellogithub/service/UserService.java

@@ -64,4 +64,6 @@ public class UserService {
     public int contributionValueReturn(String name){return userDao.contributionValueReturn(name);}
 
     public int addLabel(String username,String str){return userDao.addLabel(username,str);}
+
+    public userEntity selectUserByName(String name ){return userDao.selectUserByName(name);}
 }

src/com/hellogithub/servlet/retUserServlet.java

@@ -0,0 +1,74 @@
+package com.hellogithub.servlet;
+
+import com.alibaba.fastjson.JSONObject;
+import com.hellogithub.entity.userEntity;
+import com.hellogithub.service.UserService;
+import jakarta.servlet.ServletConfig;
+import jakarta.servlet.ServletException;
+import jakarta.servlet.http.HttpServlet;
+import jakarta.servlet.http.HttpServletRequest;
+import jakarta.servlet.http.HttpServletResponse;
+import jakarta.servlet.http.HttpSession;
+
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.util.HashMap;
+
+public class retUserServlet extends HttpServlet {
+    private UserService userService = new UserService();
+    @Override
+    public void init(ServletConfig config) throws ServletException {
+
+    }
+
+    @Override
+    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
+        doPost(req, resp);
+    }
+
+    @Override
+    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
+        resp.setCharacterEncoding("UTF-8");
+        resp.setContentType("text/html; charset=utf-8");
+        //        设置响应头允许ajax跨域访问
+        String curOrigin = req.getHeader("Origin");
+        resp.setHeader("Access-Control-Allow-Origin", curOrigin == null ? "true" : curOrigin);
+        resp.setHeader("Access-Control-Allow-Credentials", "true");
+        resp.setHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE, HEAD");
+        resp.setHeader("Access-Control-Max-Age", "3600");
+        resp.setHeader("Access-Control-Allow-Headers", "access-control-allow-origin, authority, content-type, version-info, X-Requested-With");
+        resp.setContentType("application/json;charset=UTF-8");
+
+        PrintWriter writer = resp.getWriter();
+        HttpSession session = req.getSession();
+        userEntity userEntity= null;
+        userEntity=(userEntity)session.getAttribute("user");
+        if(userEntity ==null)
+        {
+            setResultError("用户未登录",writer);
+        }
+        else{
+            String jsonString = JSONObject.toJSONString(userService.selectUserByName(userEntity.getUserName()));
+            writer.println(jsonString);
+            writer.close();
+        }
+
+    }
+
+    public void setResult(Integer code, String msg, PrintWriter writer) {
+        HashMap<String, Object> result = new HashMap<>();
+        result.put("code", code);
+        result.put("msg", msg);
+        String jsonString = JSONObject.toJSONString(result);
+        writer.println(jsonString);
+        writer.close();
+    }
+
+    public void setResultError(String msg, PrintWriter writer) {
+        setResult(500, msg, writer);
+    }
+
+    public void setResultOK(String msg, PrintWriter writer) {
+        setResult(200, msg, writer);
+    }
+}