添加搜索历史

src/com/hellogithub/dao/UserDao.java

@@ -231,4 +231,23 @@ public class UserDao {
             }
         }
     }
+
+    public int addLabel(String username,String str){
+        String label;
+        userEntity userEntity;
+        int num;
+        try {
+            Connection conn = JdbcUtils.getConnection();
+            QueryRunner runner = new QueryRunner();
+            String sql = "select searchHistory from user where userName=?";
+            userEntity  = runner.query(conn, sql, new BeanHandler<>(userEntity.class),username);
+            label = userEntity.getSearchHistory()+str+";";
+            sql="UPDATE user SET searchHistory = ? WHERE userName= ?";
+            num = runner.update(conn,sql,label,username);
+        } catch (SQLException e) {
+            throw new RuntimeException(e);
+        }
+
+        return num;
+    }
 }

src/com/hellogithub/service/UserService.java

@@ -57,4 +57,6 @@ public class UserService {
     public long queryUserCount(){return userDao.queryUserCount();}
 
     public int contributionValueReturn(String name){return userDao.contributionValueReturn(name);}
+
+    public int addLabel(String username,String str){return userDao.addLabel(username,str);}
 }

src/com/hellogithub/servlet/selectByInputServlet.java

@@ -3,6 +3,7 @@ package com.hellogithub.servlet;
 import com.alibaba.fastjson.JSONObject;
 import com.hellogithub.entity.projectEntity;
 import com.hellogithub.entity.userEntity;
+import com.hellogithub.service.UserService;
 import com.hellogithub.service.projectService;
 import jakarta.servlet.ServletConfig;
 import jakarta.servlet.ServletException;
@@ -19,6 +20,7 @@ import java.util.List;
 @WebServlet("/selectByInput")
 public class selectByInputServlet extends HttpServlet {
     private com.hellogithub.service.projectService projectService=new projectService();
+    private UserService userService = new UserService();
     @Override
     public void init(ServletConfig config) throws ServletException {
 
@@ -41,7 +43,7 @@ public class selectByInputServlet extends HttpServlet {
         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");
-        //返回最新期刊数字
+        //添加搜索历史
         PrintWriter writer = resp.getWriter();
         String str = req.getParameter("xxxxx");
         List<projectEntity> projectEntityList = projectService.selectByInput(str);
@@ -51,13 +53,20 @@ public class selectByInputServlet extends HttpServlet {
         userEntity=(userEntity)session.getAttribute("user");
         if(userEntity == null)
         {
-
+            if(projectEntityList.size() == 0 ){
+                setResultError("查询结果为空",writer);
             }
             else{
-
+                String jsonString = JSONObject.toJSONString(projectEntityList);
-
+                setResultOK("success",writer);
+                writer.println(jsonString);
+                writer.close();
+                setResultOK("success",writer);
             }
-
+        }
+        else{
+            String username = userEntity.getUserName();
+            int num = userService.addLabel(username,str);
 
             if(projectEntityList.size() == 0 ){
                 setResultError("查询结果为空",writer);
@@ -69,6 +78,10 @@ public class selectByInputServlet extends HttpServlet {
                 writer.close();
                 setResultOK("success",writer);
             }
+        }
+
+
+
 
     }
     public void setResult(Integer code, String msg, PrintWriter writer) {