Spring + Spring MVC + Ibatis + Velocity 框架搭建

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总结下如何用这四个常用框架搭建一个 Java Web 工程，方便以后更快速的开发工程。首先得用 maven 搭建一个多模块的 web 工程，这里不再赘述，请参考以前的总结：用 Maven 命令行创建多模块 Web 项目

首先导入这些框架所需的 maven 依赖：

<spring.version>3.2.2.RELEASE</spring.version>
<v.velocity>1.6.3</v.velocity>
<v.velocity.tool>1.2</v.velocity.tool>
<jdbc.driver.version>5.1.15</jdbc.driver.version>

<!– ibatis begin –>
<dependency>
<groupId>org.apache.ibatis</groupId>
<artifactId>ibatis-sqlmap</artifactId>
<version>2.3.4.726</version>
</dependency>

<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${jdbc.driver.version}</version>
</dependency>
<!– ibatis end –>

<!– spring begin –>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
</dependency>

<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<artifactId>spring-context</artifactId>
<groupId>org.springframework</groupId>
<version>${spring.version}</version>
</dependency>

<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.version}</version>
</dependency>

<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>

<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>${spring.version}</version>
</dependency>

<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<!– spring end –>

<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
</dependency>

<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
<version>2.1</version>
<scope>provided</scope>
</dependency>

<!– velocity begin –>
<dependency>
<groupId>org.apache.velocity</groupId>
<artifactId>velocity</artifactId>
<version>${v.velocity}</version>
</dependency>
<dependency>
<groupId>velocity-tools</groupId>
<artifactId>velocity-tools</artifactId>
<version>${v.velocity.tool}</version>
</dependency>
<!– velocity end –>

web.xml 里配置 spring 和 spring mvc 入口

<servlet>
<servlet-name>appServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring-config.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>

<servlet-mapping>
<servlet-name>appServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
DispatcherServlet 是 spring mvc 的所有请求入口的 servlet。contextConfigLocation 参数配置 spring 的总配置文件位置。如果是 spring 集成 struts 的话，还需要单独配置 spring 的监听器，但是如果是集成 spring mvc，则不需要下面这段配置了：

<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring-context.xml</param-value>
</context-param>

spring 总配置文件

<?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:aop=”http://www.springframework.org/schema/aop”
xmlns:mvc=”http://www.springframework.org/schema/mvc”
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/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
default-autowire=”byName”>

<context:component-scan base-package=”com.jd.im.**”/>

<mvc:annotation-driven/>

<bean class=”org.springframework.beans.factory.config.PropertyPlaceholderConfigurer”>
<property name=”locations”>
<list>
<value>classpath:im-king.properties</value>
<value>classpath:important.properties</value>
<value>classpath:jss_config.properties</value>
</list>
</property>
</bean>

<import resource=”spring/spring-config-mvc.xml”></import>
<import resource=”spring/spring-config-datasource.xml”/>
</beans>
总配置文件里集成了 spring mvc 配置文件和 ibatis 数据源的配置文件。

spring mvc 配置

<?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:mvc=”http://www.springframework.org/schema/mvc”
xsi:schemaLocation=”http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.2.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd”>

<context:component-scan base-package=”com.**.dd.mall.web.controller” />
<mvc:annotation-driven />

<bean id=”dateObjectMapper” class=”com.**.dd.mall.web.util.DateObjectMapper”></bean>
<!– Json 返回乱码处理 –>
<bean class=”org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter”>
<property name=”messageConverters”>
<list>
<bean class=”org.springframework.http.converter.json.MappingJacksonHttpMessageConverter”>
<property name=”objectMapper” ref=”dateObjectMapper”></property>
</bean>
<bean class=”org.springframework.http.converter.ByteArrayHttpMessageConverter” />
<bean class=”org.springframework.http.converter.StringHttpMessageConverter”>
<property name=”supportedMediaTypes”>
<list>
<value>text/plain;charset=UTF-8</value>
</list>
</property>
</bean>
<bean class=”org.springframework.http.converter.ResourceHttpMessageConverter” />
<bean class=”org.springframework.http.converter.xml.SourceHttpMessageConverter” />
<bean class=”org.springframework.http.converter.xml.XmlAwareFormHttpMessageConverter” />
<bean class=”org.springframework.http.converter.xml.Jaxb2RootElementHttpMessageConverter” />
</list>
</property>
</bean>

<mvc:resources mapping=”/dist/**” location=”/dist/” cache-period=”3600″ />
<mvc:resources mapping=”/js/**” location=”/js/” cache-period=”3600″ />
<mvc:resources mapping=”/css/**” location=”/css/” cache-period=”3600″ />
<!–<mvc:resources mapping=”/fonts/**” location=”/fonts/” cache-period=”3600″ /> –>
<mvc:resources mapping=”/config.json” location=”/” cache-period=”3600″ />
<mvc:resources mapping=”/image/**” location=”/image/” cache-period=”3600″ />

<!– 对转向页面的路径解析。prefix：前缀，suffix：后缀 –>
<bean id=”viewResolver” class=”org.springframework.web.servlet.view.velocity.VelocityLayoutViewResolver”>
<property name=”cache” value=”true”></property>
<property name=”suffix” value=”.vm”></property>
<property name=”prefix” value=””></property>
<property name=”contentType” value=”text/html;charset=utf-8″></property>
<property name=”exposeRequestAttributes” value=”true”></property>
<property name=”viewClass” value=”org.springframework.web.servlet.view.velocity.VelocityLayoutView”></property>
</bean>

<!– 用于开启 /user/getUser?format=json 的支持 –>
<property name=”favorParameter” value=”true” />
<property name=”defaultViews”>
<list>
<!– for application/json –>
<bean class=”org.springframework.web.servlet.view.json.MappingJacksonJsonView”>
</bean>
</list>
</property>
</bean>

</beans>
viewResolver 和 velocityConfig 节点指定了 spring mv 返回页面用 velocity。

Ibatis 配置
带读写分离的数据源配置
<?xml version=”1.0″ encoding=”GBK”?>
<beans xmlns=”http://www.springframework.org/schema/beans”
xmlns:xsi=”http://www.w3.org/2001/XMLSchema-instance” xmlns:tx=”http://www.springframework.org/schema/tx”
xsi:schemaLocation=”http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-2.5.xsd”
default-autowire=”byName”>

<bean id=”sqlMapClient” class=”org.springframework.orm.ibatis.SqlMapClientFactoryBean”>
<property name=”configLocations”>
<list>
<value>classpath:sqlmap-config.xml</value>
</list>
</property>
<property name=”dataSource” ref=”dataSource”/>
</bean>

<bean id=”sqlMapClientRead” class=”org.springframework.orm.ibatis.SqlMapClientFactoryBean”>
<property name=”configLocations”>
<list>
<value>classpath:sqlmap-config.xml</value>
</list>
</property>
<property name=”dataSource” ref=”selectedDataSource”/>
</bean>

<tx:annotation-driven transaction-manager=”transactionManager”/>

</beans>

Ibatis 的查询依赖 SqlMapClientFactoryBean 这个对象的配置。这个对象同时指定了 ibatis 的总配置文件和数据源。一共配了两个，一个负责读，一个负责写。

Ibatis 总配置文件

<?xml version=”1.0″ encoding=”GBK”?>
<!DOCTYPE sqlMapConfig PUBLIC “-//iBATIS.com//DTD SQL Map
Config 2.0/” “http://www.ibatis.com/dtd/sql-map-config-2.dtd”>

sqlMap 节点负责导入分配置文件，也就是 sql 文件。可以有多个。

ibatis 的 sql 分配置文件

<?xml version=”1.0″ encoding=”UTF-8″?>
<!DOCTYPE sqlMap PUBLIC “-//ibatis.apache.org//DTD SQL Map 2.0//EN” “http://ibatis.apache.org/dtd/sql-map-2.dtd”>
<sqlMap namespace=”word”>

<typeAlias alias=”Word” type=”com.**.im.RiskKeyWord”/>

<insert id=”add” parameterClass=”Word”>
INSERT
INTO key_word(lib_id, word)
VALUES (#lib_id#, #word:VARCHAR#)
<selectKey resultClass=”int” keyProperty=”id”>
select last_insert_id() limit 1
</selectKey>
</insert>

<update id=”update” parameterClass=”Word”>
UPDATE key_word
SET lib_id = #lib_id#, word = #word:VARCHAR#
WHERE id = #id#
</update>

<select id=”query” parameterClass=”int” resultClass=”Word”>
SELECT id, lib_id, word
FROM key_word
WHERE id = #id#
</select>

<delete id=”del” parameterClass=”int” >
DELETE
FROM key_word
WHERE id = #id#
</delete>
</sqlMap>