~~~~~~~~~~~~~~配置文件结构~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1.web.xml
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5"> <!-- DispatcherServlet是一个Servlet,所以可以配置多个DispatcherServlet --> <servlet> <servlet-name>main</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:spring/main-servlet.xml</param-value> </init-param> <load-on-startup>1</load-on-startup><!-- 启动顺序，让这个Servlet随Servlet容器一起启动 --> </servlet> <servlet-mapping> <servlet-name>main</servlet-name> <url-pattern>*.do</url-pattern> </servlet-mapping> <!-- 加了 SpringMVC Filter 之后,也只能处理post的数据乱码 --> <filter> <filter-name>encodingFilter</filter-name> <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> <init-param> <param-name>encoding</param-name> <param-value>UTF-8</param-value> </init-param> <init-param> <param-name>forceEncoding</param-name> <param-value>true</param-value> </init-param> </filter> <filter-mapping> <filter-name>encodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!-- 默认首页 --> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> </web-app>
2.main-servlet.xml
<?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-3.0.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"> <!-- 自动扫描的报名 --> <context:component-scan base-package="com.vipshop" /> <!-- 【视图解析器】, 根据【Controller】返回的字符串【映射】到相应的【jsp】 --> <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/jsp/"/> <property name="suffix" value=".jsp"/> </bean> <!-- 【加载】其他SpringMVC【子容器】 --> <import resource="classpath:spring/SpringMVC_jdbc.xml"/> <!-- 【@ResponseBody】ajax 请求返回乱码 --> <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"> <property name="messageConverters"> <list> <ref bean="stringHttpMessageConverter" /> </list> </property> </bean> <bean id="stringHttpMessageConverter" class="org.springframework.http.converter.StringHttpMessageConverter"> <property name ="supportedMediaTypes"> <list> <value>text/plain;charset=UTF-8</value> </list> </property> </bean> </beans>
3.SpringMVC_jdbc.xml
<?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:p="http://www.springframework.org/schema/p" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd "> <!-- 附加属性文件 --> <context:property-placeholder location="classpath:spring/jdbc.properties, classpath:spring/mapper.properties" /> <!-- 数据连接池 --> <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close" p:driverClass="${app.jdbc.driverClassName}" p:jdbcUrl="${app.jdbc.url}" p:user="${app.jdbc.username}" p:password="${app.jdbc.password}" p:acquireIncrement="10" p:idleConnectionTestPeriod="60" p:maxPoolSize="100" p:maxStatements="50" p:minPoolSize="10" /> <!-- 事务管理器 --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager" p:dataSource-ref="dataSource" /> <!-- sqlSessionFaction 配置 --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource" /> <property name="configLocation" value="classpath:spring/MyBatis_config.xml" /> </bean> <!-- 自动扫描mapper文件 --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="com.persistence" /> </bean> </beans>
4.jdbc.properties
# database properties app.jdbc.driverClassName=com.mysql.jdbc.Driver app.jdbc.url=jdbc:mysql://localhost/weibo app.jdbc.username=root app.jdbc.password=123456
5.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> <typeAliases> <typeAlias type="com.entity.User" alias="User"/> <typeAlias type="com.entity.Message" alias="Message"/> </typeAliases> </configuration>
6.xxxMapper.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.persistence.MessageMapper"> <resultMap id="resultMessage" type="Message"> <result property="id" column="id" /> <result property="userid" column="userid" /> <result property="content" column="content" /> <result property="time" column="time" /> </resultMap> <insert id="addMessage" parameterType="Message"> INSERT INTO message (id,userid,content,time) VALUE (null,#{userid},#{content},#{time}) </insert> <select id="findAll" resultMap="resultMessage"> SELECT id,userid,content,time FROM message; </select> <select id="getById" parameterType="int" resultMap="resultMessage"> SELECT id,userid,content,time FROM message where id = #{id}; </select> <delete id="deleteById" parameterType="int"> DELETE FROM message WHERE ID = #{id} </delete> <update id="update" parameterType="Message"> UPDATE message <set> <if test="userid != null ">userid = #{userid},</if> <if test="content != null ">content = #{content},</if> <if test="time != null ">time = #{time}</if> </set> WHERE ID = #{id} </update> <select id="getOneByCondition" parameterType="Message" resultMap="resultMessage"> select id,userid,content,time from message where 1=1 <if test="id != null and ‘‘ != id"> and id = #{id} </if> <if test="userid != null and ‘‘ != userid"> and userid = #{userid} </if> <if test="content != null and ‘‘ != content"> and content = #{content} </if> <if test="time != null and ‘‘ != time"> and time = #{time} </if> </select> </mapper>