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This commit is contained in:
cyk
2023-06-30 18:23:43 +08:00
parent 4516d5f339
commit 6baa2fb9d4
7 changed files with 213 additions and 5 deletions
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54
src/com/hellogithub/dao/UserDao.java
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@@ -2,11 +2,10 @@ package com.hellogithub.dao;
import com.hellogithub.entity.userEntity;
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.Date;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.*;
/**
* 用户Dao层
@@ -113,4 +112,51 @@ public class UserDao {
JdbcUtils.closeConnection(resultSet, preparedStatement, connection);
}
}
public int dedletePieceLabel(int userID,String str){
String label;
int num;
try {
Connection conn = JdbcUtils.getConnection();
QueryRunner runner = new QueryRunner();
String sql = "select searchHistory from user where userId=?";
label = runner.query(conn, sql, new BeanHandler<>(String.class),userID);
label=label.replace(str,"");
sql="UPDATE user SET searchHistory = ? WHERE userId= ?";
num = runner.update(conn,sql,label,userID);
} catch (SQLException e) {
throw new RuntimeException(e);
}
return num;
}
public String selectLabel(int userID){
String label;
try {
Connection conn = JdbcUtils.getConnection();
QueryRunner runner = new QueryRunner();
String sql = "select searchHistory from user where userId=?";
label = runner.query(conn, sql, new BeanHandler<>(String.class),userID);
} catch (SQLException e) {
throw new RuntimeException(e);
}
return label;
}
public int dedleteAllLabel(int userID){
String label="";
int num;
try {
Connection conn = JdbcUtils.getConnection();
QueryRunner runner = new QueryRunner();
String sql="UPDATE user SET searchHistory = ? WHERE userId= ?";
num = runner.update(conn,sql,label,userID);
} catch (SQLException e) {
throw new RuntimeException(e);
}
return num;
}
}

4
src/com/hellogithub/dao/projectDao.java
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@@ -21,6 +21,7 @@ public class projectDao {
QueryRunner runner = new QueryRunner();
String sql = "select * from project where periodicals = ?";
projectEntityList = runner.query(conn, sql, new BeanListHandler<>(projectEntity.class), num);
conn.close();
} catch (SQLException e) {
throw new RuntimeException(e);
}
@@ -34,6 +35,7 @@ public class projectDao {
QueryRunner runner = new QueryRunner();
String sql = "select * from project Group BY periodicals DESC limit 1";
projectEntity = runner.query(conn, sql, new BeanHandler<>(projectEntity.class));
conn.close();
} catch (SQLException e) {
throw new RuntimeException(e);
}
@@ -47,6 +49,7 @@ public class projectDao {
QueryRunner runner = new QueryRunner();
String sql = "select count(1) from project";
count = runner.query(conn, sql, new BeanHandler<>(Integer.class));
conn.close();
} catch (SQLException e) {
throw new RuntimeException(e);
}
@@ -61,6 +64,7 @@ public class projectDao {
QueryRunner runner = new QueryRunner();
String sql = "select * from project where categoryId = ?";
projectEntityList = runner.query(conn, sql, new BeanListHandler<>(projectEntity.class), num);
conn.close();
} catch (SQLException e) {
throw new RuntimeException(e);
}

3
src/com/hellogithub/service/UserService.java
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@@ -31,4 +31,7 @@ public class UserService {
public userEntity findByUserName(String userName) {
return userDao.findByUserName(userName);
}
public int dedletePieceLabel(int userID,String str){ return userDao.dedletePieceLabel(userID, str);}
public String selectLabel(int userID){return userDao.selectLabel(userID);}
public int dedleteAllLabel(int userID){return userDao.dedleteAllLabel(userID);}
}

2
src/com/hellogithub/servlet/VerifycodeServlet.java
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@@ -25,7 +25,7 @@ public class VerifycodeServlet extends HttpServlet {
// request.setCharacterEncoding("UTF-8");
// response.setCharacterEncoding("UTF-8");
// response.setContentType("text/html; charset=utf-8");
// 设置响应头允许ajax跨域访问
// 设置响应头允许ajax跨域访问`
// response.setHeader("Access-Control-Allow-Origin", "*");
// response.setHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE");
// response.setHeader("Access-Control-Max-Age", "3600");

50
src/com/hellogithub/servlet/deleteAllLabelServlet.java Normal file
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@@ -0,0 +1,50 @@
package com.hellogithub.servlet;
import com.alibaba.fastjson.JSONObject;
import com.hellogithub.service.UserService;
import jakarta.servlet.ServletException;
import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashMap;
public class deleteAllLabelServlet extends HttpServlet {
private UserService userService = new UserService();
@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 {
PrintWriter writer = resp.getWriter();
String id = req.getParameter("xxxxx");
int num = userService.dedleteAllLabel(Integer.parseInt(id));
if(num == 0 ){
setResultError("删除失败",writer);
}else{
setResultOK("删除成功",writer);
}
}
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);
}
}

49
src/com/hellogithub/servlet/deletelabelServlet.java Normal file
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@@ -0,0 +1,49 @@
package com.hellogithub.servlet;
import com.alibaba.fastjson.JSONObject;
import com.hellogithub.service.UserService;
import jakarta.servlet.ServletException;
import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashMap;
public class deletelabelServlet extends HttpServlet {
private UserService userService = new UserService();
@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 {
PrintWriter writer = resp.getWriter();
String id = req.getParameter("xxxxx");
String str = req.getParameter("xxxxx");
int num = userService.dedletePieceLabel(Integer.parseInt(id),str);
if(num == 0 ){
setResultError("删除失败",writer);
}else{
setResultOK("删除成功",writer);
}
}
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);
}
}

56
src/com/hellogithub/servlet/selectUserLabelServlet.java Normal file
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@@ -0,0 +1,56 @@
package com.hellogithub.servlet;
import com.alibaba.fastjson.JSONObject;
import com.hellogithub.service.UserService;
import jakarta.servlet.ServletException;
import jakarta.servlet.http.*;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashMap;
public class selectUserLabelServlet extends HttpServlet {
private UserService userService = new UserService();
@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();
String id = req.getParameter("xxxxx");
String jsonString = JSONObject.toJSONString(userService.selectLabel(Integer.parseInt(id)));
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);
}
}