Maven的学习资料收集--（八） 构建MyBatis项目

目录(?[+]

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";

     @Override
     public void insert(PersonEntity person) {
         SqlSession session = MyBatisUtil.getSession();
         session.insert(NAMESPACE + ".insert" , person);

         session.commit();
         session.close();
     }

     @Override
     public 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;
     }

     @Override
     public 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;

     @Before
     public void before() {
         personEntityDao = new PersonEntityDao();
     }

     @Test
     public void testQueryAll() {
         List<PersonEntity> personList = personEntityDao.queryAll();

         for(PersonEntity each : personList) {
             System.out.println(each);
         }
     }

     @Test
     public 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: