轻量级ORM框架MyBatis完美的配合SpringMVC web框架实现了后台action的开发，结合Java模版引擎velocity实现了Java代码与前端代码的隔离。
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Spring 3.2.4-RELEASE前端
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${version.spring}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${version.spring}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>${version.spring}</version>
</dependency>
mybatisjava
<dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>1.2.1</version> </dependency> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>3.2.3</version> </dependency>
链接池dbcpmysql
<dependency> <groupId>commons-dbcp</groupId> <artifactId>commons-dbcp</artifactId> <version>1.4</version> </dependency>
mybatis-config.xml,此处只是示例
git
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd"> <configuration> <typeAliases> <!--系统中持久层对象--> <typeAlias type="com.buglife.webutil.model.Test" alias="Test"/> </typeAliases> <mappers> <!--系统中持久层对象对应的Mapper映射XML文件--> <mapper resource="com/buglife/webutil/mapper/TestMapper.xml" /> </mappers> </configuration>
applicationContext.xml
github
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">
<!--加载JDBC配置文件-->
<context:property-placeholder location="classpath:jdbc.properties"/>
<tx:annotation-driven/>
<context:component-scan base-package="com.buglife.webutil.web.service.impl"></context:component-scan>
<!--配置数据源（链接池）-->
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName" value="${jdbc.driver}"/>
<property name="url" value="${jdbc.url}"/>
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
</bean>
<bean id="sessionFactory"
class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="configLocation" value="classpath:config/mybatis-config.xml"/>
<property name="typeAliasesPackage" value="com.buglife.webutil.model"/>
</bean>
<!--配置事务-->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"/>
</bean>
<!--经过扫描Mapper所在包名自动注入Mapper-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.buglife.webutil.dao"/>
</bean>
</beans>
自动生成Model和Mapperweb
建立generatorConfig.xmlspring
<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE generatorConfiguration PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN" "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd" > <generatorConfiguration> <!--加载数据库链接驱动包--> <classPathEntry location="C:\Users\Administrator\.m2\repository\mysql\mysql-connector-java\5.1.6\mysql-connector-java-5.1.6.jar" /> <context id="context1" targetRuntime="MyBatis3"> <jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql://localhost:3306/webutil?useUnicode=true&characterEncoding=UTF-8" userId="root" password="root" /> <!--Model存放位置--> <javaModelGenerator targetPackage="com.buglife.webutil.model" targetProject="src/main/java" /> <!--Mapper xml文件存放位置--> <sqlMapGenerator targetPackage="com.buglife.webutil.mapper" targetProject="src/main/resources" /> <!--Mapper 接口存放位置--> <javaClientGenerator type="XMLMAPPER" targetPackage="com.buglife.webutil.dao" targetProject="src/main/java" /> <!--配置须要用到的数据表--> <table schema="webutil" tableName="test" /> </context> </generatorConfiguration>
添加mybatis-generate插件
sql
<plugin> <groupId>org.mybatis.generator</groupId> <artifactId>mybatis-generator-maven-plugin</artifactId> <version>1.3.2</version> <configuration> <verbose>true</verbose> <overwrite>true</overwrite> <!--generatorConfig.xml存放位置--> <configurationFile>src\main\resources\config\generatorConfig.xml</configurationFile> </configuration> <executions> <!--自动生成Mapper和model的生命周期段--> <execution> <id>mapper-generate</id> <phase>generate-resources</phase> <goals> <goal>generate</goal> </goals> </execution> </executions> </plugin>
这时执行maven的命令mvn install则能够生成mybatis所需的model和Mapper数据库
添加依赖
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${version.spring}</version>
</dependency>
<!--支持velocity的依赖-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>${version.spring}</version>
</dependency>
<dependency>
<groupId>org.apache.velocity</groupId>
<artifactId>velocity</artifactId>
<version>1.7</version>
</dependency>
<dependency>
<groupId>org.apache.velocity</groupId>
<artifactId>velocity-tools</artifactId>
<version>2.0</version>
</dependency>
在SpringMVC中配置velocity
<!-- 配置velocity引擎 --> <bean id="velocityConfigurer" class="org.springframework.web.servlet.view.velocity.VelocityConfigurer"> <!-- 模板存放的路径 --> <property name="resourceLoaderPath" value="/WEB-INF/views/"/> <!-- Velocity配置文件 --> <property name="configLocation" value="classpath:velocity.properties"/> </bean> <!-- 配置视图的显示 --> <bean id="ViewResolver" class="org.springframework.web.servlet.view.velocity.VelocityLayoutViewResolver"> <property name="prefix" value="/"/> <!-- 视图文件的前缀，即存放的路径 --> <property name="suffix" value=".vm"/> <!-- 视图文件的后缀名 --> <!--<property name="toolboxConfigLocation" value="/WEB-INF/tools.xml"/>--> <!--toolbox配置文件路径--> <property name="dateToolAttribute" value="date"/> <!--日期函数名称--> <property name="numberToolAttribute" value="number"/> <!--数字函数名称--> <property name="contentType" value="text/html;charset=UTF-8"/> <property name="exposeSpringMacroHelpers" value="true"/> <!--是否使用spring对宏定义的支持--> <property name="exposeRequestAttributes" value="true"/> <!--是否开放request属性--> <property name="requestContextAttribute" value="rc"/> <!--request属性引用名称--> <!--指定默认layout文件--> <property name="layoutUrl" value="layout/default.vm"/> </bean>
velocity配置文件velocity.properties,主要配置输入输出编码格式
#指定宏定义位置 velocimacro.library = /WEB-INF/macros/macros.vm input.encoding=UTF-8 output.encoding=UTF-8
最后看下web.xml中的配置状况
<servlet> <servlet-name>velocity</servlet-name> <servlet-class>org.apache.velocity.tools.view.VelocityLayoutServlet</servlet-class> <init-param> <param-name>org.apache.velocity.tools.deprecationSupportMode</param-name> <param-value>false</param-value> </init-param> <init-param> <param-name>org.apache.velocity.tools.cleanConfiguration</param-name> <param-value>true</param-value> </init-param> <init-param> <param-name>org.apache.velocity.tools.userCanOverwriteTools</param-name> <param-value>false</param-value> </init-param> </servlet> <servlet-mapping> <servlet-name>velocity</servlet-name> <url-pattern>*.vm</url-pattern> </servlet-mapping>
可访问源码