MyBatis+Spring整合
老规矩，先上结构
0.MyBatis+Spring的Pom文件（值得收藏）
<?xml version="1.0" encoding="UTF-8"?> <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/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.nf</groupId> <artifactId>mybatis-spring</artifactId> <version>1.0-SNAPSHOT</version> <name>Spring-Mybatis-Mapper-PageHelper</name> <description>这是一个集成了Mybatis分页插件和通用Mapper的示例项目</description> <url>http://maven.apache.org</url> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <!-- 编译jdk版本 --> <jdk.version>1.7</jdk.version> <!-- 依赖版本 --> <mybatis.version>3.4.6</mybatis.version> <mapper.version>4.0.3</mapper.version> <pagehelper.version>5.1.4</pagehelper.version> <mysql.version>5.1.6</mysql.version> <spring.version>4.3.5.RELEASE</spring.version> <mybatis.spring.version>1.3.2</mybatis.spring.version> </properties> <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.12</version> <scope>test</scope> </dependency> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>1.2.17</version> </dependency> <!-- c3p0 --> <dependency> <groupId>com.mchange</groupId> <artifactId>c3p0</artifactId> <version>0.9.5.2</version> </dependency> <!-- servlet-api --> <dependency> <groupId>javax.servlet</groupId> <artifactId>servlet-api</artifactId> <version>2.5</version> <scope>provided</scope> </dependency> <dependency> <groupId>javax.servlet.jsp</groupId> <artifactId>jsp-api</artifactId> <version>2.1</version> <scope>provided</scope> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> <version>1.2</version> </dependency> <dependency> <groupId>javax.ws.rs</groupId> <artifactId>javax.ws.rs-api</artifactId> <version>2.0</version> </dependency> <dependency> <groupId>javax.websocket</groupId> <artifactId>javax.websocket-api</artifactId> <version>1.0</version> </dependency> <dependency> <groupId>javax.annotation</groupId> <artifactId>javax.annotation-api</artifactId> <version>1.2</version> </dependency> <dependency> <groupId>javax.transaction</groupId> <artifactId>javax.transaction-api</artifactId> <version>1.2</version> </dependency> <!-- Spring --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-orm</artifactId> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-oxm</artifactId> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-tx</artifactId> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-aop</artifactId> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> </dependency> <!-- spring-oxm依赖 --> <dependency> <groupId>org.codehaus.castor</groupId> <artifactId>castor-xml</artifactId> <version>1.3.3</version> </dependency> <!-- spring-json依赖 --> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>2.4.2</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.dataformat</groupId> <artifactId>jackson-dataformat-xml</artifactId> <version>2.4.2</version> </dependency> <!-- spring-aop依赖 --> <dependency> <groupId>org.aspectj</groupId> <artifactId>aspectjweaver</artifactId> <version>1.8.2</version> </dependency> <!-- 上传文件 --> <dependency> <groupId>commons-fileupload</groupId> <artifactId>commons-fileupload</artifactId> <version>1.3.1</version> </dependency> <!-- mysql --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>${mysql.version}</version> </dependency> <!-- Mybatis --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>${mybatis.version}</version> </dependency> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>${mybatis.spring.version}</version> </dependency> <!-- Mybatis Generator --> <dependency> <groupId>org.mybatis.generator</groupId> <artifactId>mybatis-generator-core</artifactId> <version>1.3.2</version> <scope>compile</scope> <optional>true</optional> </dependency> <!-- 分页插件 --> <dependency> <groupId>com.github.pagehelper</groupId> <artifactId>pagehelper</artifactId> <version>${pagehelper.version}</version> </dependency> <!-- 通用Mapper --> <dependency> <groupId>tk.mybatis</groupId> <artifactId>mapper</artifactId> <version>${mapper.version}</version> </dependency> </dependencies> <dependencyManagement> <dependencies> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-framework-bom</artifactId> <version>${spring.version}</version> <type>pom</type> <scope>import</scope> </dependency> </dependencies> </dependencyManagement> <repositories> <repository> <id>nexus</id> <name>local private nexus</name> <url>http://maven.oschina.net/content/groups/public/</url> <releases> <enabled>true</enabled> </releases> <snapshots> <enabled>false</enabled> </snapshots> </repository> <repository> <id>sonatype-nexus-releases</id> <name>Sonatype Nexus Releases</name> <url>http://oss.sonatype.org/content/repositories/releases</url> <releases> <enabled>true</enabled> </releases> <snapshots> <enabled>false</enabled> </snapshots> </repository> <repository> <id>sonatype-nexus-snapshots</id> <name>Sonatype Nexus Snapshots</name> <url>http://oss.sonatype.org/content/repositories/snapshots</url> <releases> <enabled>false</enabled> </releases> <snapshots> <enabled>true</enabled> </snapshots> </repository> </repositories> <build> <resources> <resource> <directory>${basedir}/src/main/java</directory> <includes> <include>**/*.xml</include> </includes> </resource> <resource> <directory>${basedir}/src/main/resources</directory> </resource> </resources> <plugins> <plugin> <artifactId>maven-compiler-plugin</artifactId> <configuration> <source>${jdk.version}</source> <target>${jdk.version}</target> </configuration> </plugin> <plugin> <groupId>org.mybatis.generator</groupId> <artifactId>mybatis-generator-maven-plugin</artifactId> <version>1.3.6</version> <configuration> <configurationFile>${basedir}/src/main/resources/generator/generatorConfig.xml</configurationFile> <overwrite>true</overwrite> <verbose>true</verbose> </configuration> <dependencies> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>${mysql.version}</version> </dependency> <dependency> <groupId>tk.mybatis</groupId> <artifactId>mapper</artifactId> <version>${mapper.version}</version> </dependency> </dependencies> </plugin> </plugins> </build> </project>
1.配置文件
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<!-- 别名：方便映射文件调用 -->
<typeAliases>
<!-- 所以用包的方式：扫描该包及其子包的所有pojo，并取别名为（如:user或User） -->
<package name="com.pojo"/>
</typeAliases>
<!-- 映射器的位置 -->
<mappers>
<mapper resource="mapper/UserMapper.xml"/>
</mappers>
</configuration>
<?xml version="1.0" encoding="UTF-8"?> <!-- 头部约束的作用：beans：最基本；context：读取资源文件；aop：配置aop；tx：配置事务通知 --> <beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.2.xsd "> <!-- 读取连接池配置文件 --> <context:property-placeholder location="jdbc.properties"/> <!-- 将连接池放入spring容器 --> <bean name="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"> <!-- 资源文件配置 --> <property name="driverClass" value="${jdbc.driver}"/> <property name="jdbcUrl" value="${jdbc.url}"/> <property name="user" value="${jdbc.username}"/> <property name="password" value="${jdbc.password}"/> </bean> <!-- MyBatis的工厂 --> <bean id="sqlSessionFactoryBean" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource"/> <!-- 核心配置文件位置 --> <property name="configLocation" value="classpath:sqlMapConfig.xml"/> </bean> <!-- 原始dao开发 --> <!--<bean name="userDao" class="com.dao.UserDaoImpl"> <property name="sqlSessionFactory" ref="sqlSessionFactoryBean"/> </bean>--> <!-- Mapper动态代理开发 --> <!-- Mapper工厂 --> <!--<bean name="userMapper" class="org.mybatis.spring.mapper.MapperFactoryBean"> <!– 依赖工厂 –> <property name="sqlSessionFactory" ref="sqlSessionFactoryBean"/> <!– 依赖接口 –> <property name="mapperInterface" value="com.mapper.UserMapper"/> </bean>--> <!-- Mapper动态代理开发增强版，扫描；不需要工厂，工厂只要在spring中配置，它会自动找到它 --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <!-- 基本包 --> <property name="basePackage" value="com.mapper"/> </bean> </beans>
jdbc+log4j:参考其他文档
2.Mapper文件夹下的接口与xml
package com.mapper; import com.pojo.User; /** * @author: XDZY * @date: 2018/8/30 10:02 * @description: 实现用户增删改查的接口(映射器) */ public interface UserMapper { User findUserById(Integer id); }
<?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">
<!-- 命名空间：用于区分；如test.findUserById -->
<mapper namespace="com.mapper.UserMapper">
<select id="findUserById" parameterType="Integer" resultType="User">
select * from user where id=#{v}
</select>
</mapper>
3.Pojo
package com.pojo; import java.io.Serializable; import java.util.Date; public class User implements Serializable { private static final long serialVersionUID = 1L; private Integer id; /** * 用户姓名 */ private String username; /** * 性别 */ private String sex; /** * 生日 */ private Date birthday; /** * 地址 */ private String address; 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 getSex() { return sex; } public void setSex(String sex) { this.sex = sex; } public Date getBirthday() { return birthday; } public void setBirthday(Date birthday) { this.birthday = birthday; } public String getAddress() { return address; } public void setAddress(String address) { this.address = address; } @Override public String toString() { return "User [id=" + id + ", username=" + username + ", sex=" + sex + ", birthday=" + birthday + ", address=" + address + "]"; } }
4.测试
package com.mapper; import com.pojo.User; import org.junit.Test; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; /** * @author: XDZY * @date: 2018/9/9 23:25 * @description: 测试整合之后的查询方法 * java.lang.AbstractMethodError: * Method com/mchange/v2/c3p0/impl/NewProxyPreparedStatement.isClosed()Z is abstract * 上面这个异常是导入c3p0不正确所致，改正之后没问题（之前那个在单个spring框架中有用） */ public class JunitTest { @Test public void testMapper() throws Exception { ApplicationContext ac = new ClassPathXmlApplicationContext("applicationContext.xml"); //根据配置的id获取一个接口对象 //UserMapper mapper=(UserMapper)ac.getBean("userMapper"); //加强版 UserMapper mapper = ac.getBean(UserMapper.class); User user = mapper.findUserById(1); System.out.println(user); } }