config.xml的配置
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<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN""http://mybatis.org/dtd/mybatis-3-config.dtd"><configuration><!-- 拿到數(shù)據(jù)庫信息，這是db.properties的內(nèi)容driver=com.MySQL.jdbc.Driverurl=jdbc:mysql://localhost:3306/usertestusername=rootpassword=root--!><properties resource="db.properties"></properties><!-- 別名優(yōu)化--!><typeAliases><!-- <package name="com.leige.entity" /> --><typeAlias type="com.leige.entity.User" alias="user"/></typeAliases><!--設(shè)置框架工作模式development開發(fā)者模式 ，work是工作模式 --><environments default="development"><environment id="development"><transactionManager type="jdbc"></transactionManager><!-- 配置數(shù)據(jù)源 --><dataSource type="POOLED"><!-- 注冊(cè)驅(qū)動(dòng) --><property name="driver" value="${driver}"/><!-- 連接數(shù)據(jù)庫 --><property name="url" value="${url}"/><!-- 密碼帳號(hào)登錄 --><property name="username" value="${username}"/><property name="password" value="${password}"/></dataSource></environment></environments><!-- 使用xml，mapper resource需要設(shè)置--!><!-- <mappers><mapper resource="com/leige/entity/UserMappen.xml"></mapper></mappers> --><!--使用注解，mapper配置class，查詢方法寫在接口中--!><mappers><mapper class="com.leige.impl.UserImpl"/></mappers> |
使用xml需要再配置一個(gè)mappen.xml
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<?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"><!-- 建立表與類的映射關(guān)系有兩種：一個(gè)是xml(傾向)，另一個(gè)是注解 --><mapper namespace="com.leige.entity.UserMappen"><!-- 查詢?nèi)?--><select id="selectAll" resultType="user">select * from user</select><!-- 增加用戶 --><update id="insertUser" parameterType="user">insert into user values (null,#{name},#{password},#{age})</update></mapper>使用注解則用接口public interface UserImpl {//更新用戶，更新用@update，查詢用@select，插入用@insert，刪除使用@delete這些注解@Update("update user set name=#{name} where id=#{id}")public void updateUser(User user);}demo測(cè)試代碼public class Demo {static InputStream in = null;static SqlSessionFactory ssf = null;static{in = Demo.class.getClassLoader().getResourceAsStream("config.xml");ssf = new SqlSessionFactoryBuilder().build(in);}public static void main(String[] args) {//selectAll();//insertUser();updateUser();}//查詢?nèi)?/code>public static void selectAll(){SqlSession session = ssf.openSession();List<User> list = session.selectList("com.leige.entity.UserMappen.selectAll");System.out.println(list);session.close();}//增加用戶public static void insertUser(){SqlSession session = ssf.openSession();User user = new User();user.setName("小霸王");user.setPassword("aaaaa");user.setAge(25);int num = session.insert("com.leige.entity.UserMappen.insertUser",user);session.commit();System.out.println(num);session.close();}//修改用戶信息public static void updateUser(){SqlSession session = ssf.openSession();UserImpl userImpl = session.getMapper(UserImpl.class);User user = new User();user.setName("我是大頭鬼");user.setPassword("aaaaa");user.setAge(25);user.setId(79);userImpl.updateUser(user);session.commit();session.close();}}</configuration> |
以上所述是小編給大家介紹的Mybatis開發(fā)環(huán)境搭建實(shí)現(xiàn)數(shù)據(jù)的增刪改查功能，希望對(duì)大家有所幫助，如果大家有任何疑問請(qǐng)給我留言，小編會(huì)及時(shí)回復(fù)大家的。在此也非常感謝大家對(duì)服務(wù)器之家網(wǎng)站的支持！
原文鏈接：http://blog.csdn.net/leigelg/article/details/59638687
