spring+springmvc+ibatis整合小结
2014-06-26 23:41
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最近在整合Spring和ibatis时,不管applicationContext.xml放在哪儿,在web.xml中怎么配置,tomcat启动时始终报applicationContext.xml的错。后来查资料后才发现之前的web.xml配置文件没有在<context-param>中指定applicationContext.xml的路径。原来tomcat在加载web.xml时会优先加载<context-param>和<listener>,之后才加载<servlet>。
web.xml:
applicationContext.xml中可同时使用SqlMapClient和SqlMapClientTemplate,也可单独使用SqlMapClient。区别在于SqlMapClient中包含session的管理,SqlMapClientTemplate包含session的封装以及异常的捕捉,所以用SqlMapClient时需另外进行异常的处理。
applicationContext.xml:
ibatis相应配置文件如下
sqlMapConfig.xml:
sqlMap-User.xml:
web.xml:
<?xml version="1.0" encoding="UTF-8"?> <web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"> <display-name>S</display-name> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:applicationContext.xml</param-value> </context-param> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <listener> <description>请求监听器</description> <listener-class>org.springframework.web.context.request.RequestContextListener</listener-class> </listener> <servlet> <servlet-name>dispatcher</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:applicationContext.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>dispatcher</servlet-name> <url-pattern>*.do</url-pattern> </servlet-mapping> </web-app>
applicationContext.xml中可同时使用SqlMapClient和SqlMapClientTemplate,也可单独使用SqlMapClient。区别在于SqlMapClient中包含session的管理,SqlMapClientTemplate包含session的封装以及异常的捕捉,所以用SqlMapClient时需另外进行异常的处理。
applicationContext.xml:
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 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"> <context:component-scan base-package="com.qs"/> <mvc:annotation-driven /> <bean id="myDataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close"> <property name="driverClassName" value="com.mysql.jdbc.Driver"/> <property name="url" value="jdbc:mysql://localhost:3306/test"/> <property name="username" value="root"/> <property name="password" value="qinsong"/> </bean> <bean id="sqlMapClient" class="org.springframework.orm.ibatis.SqlMapClientFactoryBean"> <property name="configLocation" value="classpath:com/qs/sqlmap/sqlMapConfig.xml"/> <property name="dataSource" ref="myDataSource"/> </bean> <bean id="sqlMapClientTemplate" class="org.springframework.orm.ibatis.SqlMapClientTemplate"> <property name="sqlMapClient" ref="sqlMapClient"/> </bean> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/"/> <property name="suffix" value=".jsp"/> <property name="viewClass" value="org.springframework.web.servlet.view.JstlView" /> </bean> </beans>
ibatis相应配置文件如下
sqlMapConfig.xml:
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE sqlMapConfig PUBLIC "-//iBATIS.com//DTD SQL Map Config 2.0//EN" "http://www.ibatis.com/dtd/sql-map-config-2.dtd" > <sqlMapConfig> <settings useStatementNamespaces="true"/> <sqlMap resource="com/qs/sqlmap/sqlMap-User.xml"/> </sqlMapConfig>
sqlMap-User.xml:
<?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="user"> <resultMap id="userMap" class="com.qs.entity.User"> <result property="id" column="id"/> <result property="username" column="username" /> <result property="password" column="password" /> </resultMap> <select id="getUserById" parameterClass="java.lang.Integer" resultMap="userMap"> select id, username,password from user where id = #id# </select> </sqlMap>
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