package com.zucc.dao;

import com.zucc.model.User;

public interface UserMapper {

	public void addUser(User user);
}

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

<mapper namespace="com.zucc.dao.UserMapper">

<resultMap type="User" id="UserMap">
	<id property="id" column="uid"/>
	<result property="username" column="username"/>
	<result property="password" column="password"/>
	<result property="email" column="email"/>
</resultMap>

	<select id="addUser" parameterType="User">
		insert into user(username,password,email) values (#{username},#{password},#{email})
	</select>
</mapper>
 

package com.zucc.service;

import java.io.IOException;
import java.io.InputStream;

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 com.zucc.dao.UserMapper;
import com.zucc.model.User;

public class UserService {

	SqlSession sqlSession = null;
	SqlSessionFactory sqlSessionFactory = null;
	UserMapper userMapper = null;
	
	public void before() {
		String resource = "SqlMapConfig.xml";
		InputStream is = null;
		try {
			is = Resources.getResourceAsStream(resource);
		} catch (IOException e) {
			e.printStackTrace();
		}
		SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder()
				.build(is);
		sqlSession = sqlSessionFactory.openSession();
		userMapper = sqlSession.getMapper(UserMapper.class);
	}

	
	public boolean saveUser(User user) {
		before();
		try {
			userMapper.addUser(user);
			sqlSession.commit();
		} catch (Exception e) {
			sqlSession.close();
			return false;
		}
		sqlSession.close();
		return true;
	}

}
 

總結：

以上開發規範主要是對下邊的程式碼進行統一生成：

sqlSession.insert("UserMapper.insertUser", user);

Mybatis的全域性配置檔案，配置內容如下：

properties(屬性)

settings(全域性配置引數)

typeAliases(類型別名)

mappers(對映器)

1.properties屬性

需求：將資料庫連線引數單獨配置在db.properties中，只需要在SqlMapConfig.xml中載入db.properties的屬性值。在SqlMapConfig.xml中就不需要對資料庫連線引數硬編碼。

將資料庫連線引數只配置在db.properties中，原因：方便對引數進行統一管理，其他xml可以引用該db.properties.