Maven学习（八）- 构建MyBatis项目

原地址：http://blog.csdn.net/yuguiyang1990/article/details/8801158

在这里，写一下，怎么使用Maven构建MyBatis项目。

1. 新建一个Web项目

可以参考前面的博客

2. 修改pom.xml，添加MyBatis依赖

<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/maven-v4_0_0.xsd">  <modelVersion>4.0.0</modelVersion>  <groupId>com.deppon.demo</groupId>  <artifactId>test05</artifactId>  <packaging>war</packaging>  <version>0.0.1-SNAPSHOT</version>  <name>test05 Maven Webapp</name>  <url>http://maven.apache.org</url>    <!-- 属性配置 -->  <properties>      <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>  </properties>    <dependencies>    <dependency>      <groupId>junit</groupId>      <artifactId>junit</artifactId>      <version>4.10</version>      <scope>test</scope>    </dependency>        <!-- 添加MyBatis依赖 -->    <dependency>    <groupId>org.mybatis</groupId>    <artifactId>mybatis</artifactId>    <version>3.1.1</version></dependency><dependency><groupId>log4j</groupId><artifactId>log4j</artifactId><version>1.2.16</version></dependency><dependency>      <groupId>org.slf4j</groupId>      <artifactId>slf4j-api</artifactId>      <version>1.6.1</version></dependency><dependency>    <groupId>org.slf4j</groupId>    <artifactId>slf4j-nop</artifactId>    <version>1.6.4</version></dependency>  </dependencies>    <build>    <finalName>test05</finalName>  </build></project>

3. 添加mybatis-config.xml

<?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>    <!-- 全局别名设置，在映射文件中只需写别名，而不必写出整个类路径  -->    <typeAliases>           <typeAlias type="com.deppon.test05.entity.PersonEntity" alias="PersonEntity"/>    </typeAliases>     <environments default="development"><environment id="development"><transactionManager type="JDBC" /><dataSource type="POOLED"><property name="driver" value="com.microsoft.sqlserver.jdbc.SQLServerDriver" /><property name="url" value="jdbc:sqlserver://localhost:1433;DatabaseName=Demo" /><property name="username" value="ygy" /><property name="password" value="shishi" /></dataSource></environment></environments><mappers><mapper resource="com/deppon/test05/mapper/PersonEntityMapper.xml" /></mappers></configuration>

PersonEntityMapper.xml

<?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.deppon.test05.mapper.PersonEntityMapper"><!-- 查询所有用户 --><select id="queryAll" resultType="PersonEntity" >select * from t_person</select><!-- 插入一条记录 --><insert id="insert" parameterType="PersonEntity">insert into t_person(id , name) values(#{id} , #{name})</insert></mapper> 

IPersonEntityDao.java

package com.deppon.test05.dao;import java.util.List;import com.deppon.test05.entity.PersonEntity;public interface IPersonEntityDao {/** * 插入一条记录 * @param person */public void insert(PersonEntity person);/** * 查询所有记录 * @return */public List<PersonEntity> queryAll();}

PersonEntityDao.java

package com.deppon.test05.dao.impl;import java.util.List;import org.apache.ibatis.session.SqlSession;import com.deppon.test05.dao.IPersonEntityDao;import com.deppon.test05.entity.PersonEntity;import com.deppon.test05.util.MyBatisUtil;public class PersonEntityDao implements IPersonEntityDao {public static final String NAMESPACE = "com.deppon.test05.mapper.PersonEntityMapper";@Overridepublic void insert(PersonEntity person) {SqlSession session = MyBatisUtil.getSession();session.insert(NAMESPACE + ".insert" , person);session.commit();session.close();}@Overridepublic List<PersonEntity> queryAll() {SqlSession session = MyBatisUtil.getSession();List<PersonEntity> personList = session.selectList(NAMESPACE + ".queryAll");session.commit();session.close();return personList;}}

PersonEntity.java

package com.deppon.test05.entity;public class PersonEntity implements java.io.Serializable {private static final long serialVersionUID = -1138245964662330288L;private Integer id;private String name;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;}@Overridepublic String toString() {return "PersonEntity [id=" + id + ", name=" + name + "]";}}

MyBatisUtil.java

package com.deppon.test05.util;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;public class MyBatisUtil {private static SqlSessionFactory factory = null;private static void initialFactory() {String resource = "mybatis-config.xml";try {InputStream in = Resources.getResourceAsStream(resource);factory = new SqlSessionFactoryBuilder().build(in);} catch (IOException e) {e.printStackTrace();}}public static SqlSession getSession() {if(factory == null) {initialFactory();}return factory.openSession();}}

测试程序：

package com.deppon.test05.dao;import java.util.List;import org.junit.Before;import org.junit.Test;import com.deppon.test05.dao.impl.PersonEntityDao;import com.deppon.test05.entity.PersonEntity;public class PersonEntityDaoTest {private IPersonEntityDao personEntityDao;@Beforepublic void before() {personEntityDao = new PersonEntityDao();}@Testpublic void testQueryAll() {List<PersonEntity> personList = personEntityDao.queryAll();for(PersonEntity each : personList) {System.out.println(each);}}@Testpublic void testInsert() {PersonEntity person = new PersonEntity();person.setId(200);person.setName("乔巴");personEntityDao.insert(person);}}

项目结构如下图所示：

注意：记得那两条命令哦，亲（前面的博客有）

结果: