一.创建工程
1.打开Idea,创建一个Maven工程
2.填写好路径,点击完成
二.环境配置
1.导入依赖
在pop.xml中导入依赖
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>org.example</groupId>
<artifactId>mybatis</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>war</packaging>
<name>mybatis Maven Webapp</name>
<!-- FIXME change it to the project's website -->
<url>http://www.example.com</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.7</maven.compiler.source>
<maven.compiler.target>1.7</maven.compiler.target>
<spring.version>5.1.6.RELEASE</spring.version>
</properties>
<!--mybatis-->
<dependencies>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.6</version>
</dependency>
<!-- mysql驱动包 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.29</version>
</dependency>
<!-- spring begin -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- spring end -->
<!--
net.sf.json
-->
<dependency>
<groupId>net.sf.json-lib</groupId>
<artifactId>json-lib</artifactId>
<version>2.4</version>
<classifier>jdk15</classifier>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter</artifactId>
<version>RELEASE</version>
<scope>compile</scope>
</dependency>
</dependencies>
<build>
<finalName>mybatis</finalName>
<pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
<plugins>
<plugin>
<artifactId>maven-clean-plugin</artifactId>
<version>3.1.0</version>
</plugin>
<!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->
<plugin>
<artifactId>maven-resources-plugin</artifactId>
<version>3.0.2</version>
</plugin>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.0</version>
</plugin>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.22.1</version>
</plugin>
<plugin>
<artifactId>maven-war-plugin</artifactId>
<version>3.2.2</version>
</plugin>
<plugin>
<artifactId>maven-install-plugin</artifactId>
<version>2.5.2</version>
</plugin>
<plugin>
<artifactId>maven-deploy-plugin</artifactId>
<version>2.8.2</version>
</plugin>
</plugins>
</pluginManagement>
</build>
</project>
2.配置web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
version="4.0">
</web-app>
spring-mvc.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx" xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd">
<!-- 配置扫描的包 -->
<context:component-scan base-package="com.hxci.*" />
<!-- 注册HandlerMapper、HandlerAdapter两个映射类 -->
<mvc:annotation-driven />
<!-- 访问静态资源 -->
<mvc:default-servlet-handler />
<!-- 视图解析器 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
</beans>
3.配置tomcat
url修改为tomcat的路径,点击apply,应用
三.填写代码
1.创建以下文件
UserCotroller
package com.hxci.controller;
import com.hxci.pojo.Sign;
import com.hxci.pojo.User;
import com.hxci.service.UserService;
import net.sf.json.JSONArray;
import net.sf.json.JSONObject;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import java.util.List;
@Controller
public class UserController {
UserService service = new UserService();
//如何处理ajax请求
@ResponseBody //返回你想要的返回的数据
@RequestMapping("/query")
public String query(){
List<User> list =service.query();
//将user转换一个json类型的对象
JSONArray json = JSONArray.fromObject(list);
return json.toString();//默认是请求转发
}
@ResponseBody
@RequestMapping("/add")
public String add(Sign sign){
System.out.println(sign);
return "1";//默认是请求转发
}
}
UserDao
package com.hxci.dao;
import com.hxci.pojo.User;
import java.util.List;
public interface UserDao {
public List<User> query();
void add(User user);
}
sign
package com.hxci.pojo;
public class Sign {
private Integer id;
private String name;//
private String sno;
private String clazz;
private String cours;
private String datatime;
private String num;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getSno() {
return sno;
}
public void setSno(String sno) {
this.sno = sno;
}
public String getClazz() {
return clazz;
}
public void setClazz(String clazz) {
this.clazz = clazz;
}
public String getCours() {
return cours;
}
public void setCours(String cours) {
this.cours = cours;
}
public String getDatatime() {
return datatime;
}
public void setDatatime(String datatime) {
this.datatime = datatime;
}
public String getNum() {
return num;
}
public void setNum(String num) {
this.num = num;
}
@Override
public String toString() {
return "Sign [id=" + id + ", name=" + name + ", sno=" + sno + ", clazz="
+ clazz + ", cours=" + cours + ", datatime=" + datatime + ", num="
+ num + "]";
}
}
User
package com.hxci.pojo;
public class User {
private String id;
private String name;
private String password;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
@Override
public String toString() {
return "User{" +
"id='" + id + '\'' +
", name='" + name + '\'' +
", password='" + password + '\'' +
'}';
}
}
UserService
package com.hxci.service;
import com.hxci.dao.UserDao;
import com.hxci.pojo.User;
import com.hxci.utl.BaseUtil;
import org.apache.ibatis.session.SqlSession;
import org.junit.jupiter.api.Test;
import java.util.List;
public class UserService extends BaseUtil {
SqlSession session = getSession();
UserDao dao = session.getMapper(UserDao.class);
public List<User> query(){
List<User> list=dao.query();
// session.close();
return list;
}
public void add(User user){
dao.add(user);
session.commit();
// session.close();
}
@Test
public void test1(){
UserService service =new UserService();
User user = new User();
user.setName("123");
user.setPassword("123");
service.add(user);
UserService service2 =new UserService();
System.out.println(service2.query());
}
}
BaseUtil
package com.hxci.utl;
import java.io.IOException;
import java.io.InputStream;
import java.util.List;
import com.hxci.dao.UserDao;
import com.hxci.pojo.User;
import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import org.junit.jupiter.api.DynamicTest;
import org.junit.jupiter.api.Test;
public class BaseUtil {
public SqlSession getSession(){
InputStream inputStream = null;
try {
inputStream = Resources.getResourceAsStream("mybatis-config.xml");
} catch (IOException e) {
e.printStackTrace();
}
SqlSessionFactory factory = new SqlSessionFactoryBuilder().build(inputStream);
SqlSession session = factory.openSession();
return session;
}
//@Test
/* public void query() throws Exception{
//---------------
UserDao dao = session.getMapper(UserDao.class);
List<User> list = dao.query();
System.out.println(list);
//--------------
session.close();
}*/
}
add.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<form action="http://localhost:8081/mybatis_mvc_war/add" method="post">
姓名:<input name="name" > <br><br>
密码:<input name="password" > <br><br>
<input type="submit" value="提交">
</form>
</body>
</html>
index.jsp
<html>
<body>
<h2>Hello World!</h2>
</body>
</html>
query.jsp
<%--
Created by IntelliJ IDEA.
User: Administrator
Date: 2021/9/30 0030
Time: 15:09
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
</head>
<body>
显示页面
</body>
</html>
运行