Mybatis搭建 (一)

一、先新建一个web项目，打开eclipse右击新建Dynamic web project

点击下一步最后勾选产生web.xml

二、创建sql
2.1 点击图箭头指向的图标




创建mybatis数据库

开始写sql语句

用图形化工具打开数据库可以查看已经创建成功


切换到java ee环境可以看到下图

三、导包
右击项目build path–configure build path

四、新建一个类User
写好字段右击source选择get-set、tostring等

package top.xuexibc.model;

public class User {
    private Integer id;
    private String username;
    private String password;
    public Integer getId() {
        return id;
    }
    public void setId(Integer id) {
        this.id = id;
    }
    public String getUsername() {
        return username;
    }
    public void setUsername(String username) {
        this.username = username;
    }
    public String getPassword() {
        return password;
    }
    public void setPassword(String password) {
        this.password = password;
    }
    @Override
    public String toString() {
        return "User [id=" + id + ", username=" + username + ", password=" + password + "]";
    }
    public User(Integer id, String username, String password) {
        super();
        this.id = id;
        this.username = username;
        this.password = password;
    }
    public User() {
    }
}

再新建一个包，打开时显示的层级关系有点乱，点击右上角的三角形—-package presentation选择hierarchical

package top.xuexibc.service;

import top.xuexibc.model.User;

public interface UserService {
    public int insertUser(User user);
}

五、导入配置文件—放在src下
jdbc.properties

username=root
password=root
url=jdbc:mysql://localhost:3306/mybatis
driverClassName=com.mysql.jdbc.Driver

mybatis-config.xml

<?xml version="1.0" encoding="UTF-8" ?>  
<!DOCTYPE configuration PUBLIC "-//ibatis.apache.org//DTD Config 3.0//EN" 
    "http://ibatis.apache.org/dtd/ibatis-3-config.dtd">

Usermapper.xml

<?xml version="1.0" encoding="UTF-8" ?>  
<!DOCTYPE mapper PUBLIC "-//ibatis.apache.org//DTD Mapper 3.0//EN"      
 "http://ibatis.apache.org/dtd/ibatis-3-mapper.dtd">