一 web.xml
关于这个配置文件我以前一直都是朦朦胧胧的状态,刚好借着这次整合框架的机会将它了解清楚.在下面的代码中我对每一个标签都进行了详细的注释,大家一看就懂,主要理解中的配置,因为其中配置了前端控制器,在SSM框架中,前端控制器起着最主要的作用.下面贴上代码
<?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”
xsi:schemaLocation=“http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd”
version=“3.0”>
<context-param> <!–全局范围内环境参数初始化–>
<param-name>contextConfigLocation</param-name> <!–参数名称–>
<param-value>classpath:spring-mybatis.xml</param-value> <!–参数取值–>
</context-param>
<!–以下配置的加载顺序:先 ServletContext >> context-param >> listener >> filter >> servlet >> spring–>
<!—————————————————过滤器配置——————————————————>
<!–例:编码过滤器–>
<filter> <!– 用来声明filter的相关设定,过滤器可以截取和修改一个Servlet或JSP页面的请求或从一个Servlet或JSP页面发出的响应–>
<filter-name>encodingFilter</filter-name> <!–指定filter的名字–>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> <!–定义filter的类的名称–>
<async-supported>true</async-supported> <!–设置是否启用异步支持–>
<init-param><!–用来定义参数,若在Servlet可以使用下列方法来获得:String param_name=getServletContext().getInitParamter(“param-name里面的值”);–>
<param-name>encoding</param-name> <!–参数名称–>
<param-value>UTF-8</param-value> <!–参数值–>
</init-param>
</filter>
<filter-mapping><!–用来定义filter所对应的URL–>
<filter-name>encodingFilter</filter-name> <!–指定对应filter的名字–>
<url-pattern>/*</url-pattern> <!–指定filter所对应的URL–>
</filter-mapping>
<!—————————————————监听器配置——————————————————>
<!–例:spring监听器–>
<listener> <!–用来设定Listener接口–>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class><!–定义Listener的类名称–>
</listener>
<!– 防止Spring内存溢出监听器 –>
<listener>
<listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>
</listener>
<!—————————————————servlet配置——————————————————>
<servlet> <!–用来声明一个servlet的数据 –>
<servlet-name>SpringMVC</servlet-name> <!–指定servlet的名称–>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <!–指定servlet的类名称,这里配置了前端控制器–>
<init-param><!–用来定义参数,可有多个init-param。在servlet类中通过getInitParamenter(String name)方法访问初始化参数 –>
<param-name>contextConfigLocation</param-name> <!–参数名称–>
<param-value>classpath:spring-mvc.xml</param-value> <!–参数值–>
</init-param>
<load-on-startup>1</load-on-startup><!–当值为正数或零时:Servlet容器先加载数值小的servlet,再依次加载其他数值大的servlet.–>
<async-supported>true</async-supported><!–设置是否启用异步支持–>
</servlet>
<servlet-mapping><!–用来定义servlet所对应的URL–>
<servlet-name>SpringMVC</servlet-name> <!–指定servlet的名称–>
<url-pattern>/</url-pattern> <!–指定servlet所对应的URL–>
</servlet-mapping>
<!———————————————–会话超时配置(单位为分钟)————————————————->
<session-config><!–如果某个会话在一定时间未被访问,则服务器可以扔掉以节约内存–>
<session-timeout>120</session-timeout>
</session-config>
<!—————————————————MIME类型配置 ——————————————————>
<mime-mapping><!–设定某种扩展名的文件用一种应用程序来打开的方式类型,当该扩展名文件被访问的时候,浏览器会自动使用指定应用程序来打开–>
<extension>*.ppt</extension> <!–扩展名名称–>
<mime-type>application/mspowerpoint</mime-type> <!–MIME格式–>
</mime-mapping>
<!—————————————————欢迎页面配置 ——————————————————>
<welcome-file-list><!–定义首页列单.–>
<welcome-file>/index.jsp</welcome-file> <!–用来指定首页文件名称.我们可以用<welcome-file>指定几个首页,而服务器会依照设定的顺序来找首页.–>
<welcome-file>/index.html</welcome-file>
</welcome-file-list>
<!—————————————————配置错误页面——————————————————>
<error-page> <!–将错误代码(Error Code)或异常(Exception)的种类对应到web应用资源路径.–>
<error-code>404</error-code> <!–HTTP Error code,例如: 404、403–>
<location>error.html</location> <!–用来设置发生错误或异常时要显示的页面–>
</error-page>
<error-page>
<exception-type>java.lang.Exception</exception-type><!–设置可能会发生的java异常类型,例如:java.lang.Exception–>
<location>ExceptionError.html</location> <!–用来设置发生错误或异常时要显示的页面–>
</error-page>
</web-app>
二 spring-mvc.xml
需要实现基本功能的配置
1 配置 mvc:annotation-driven/
2 配置 <context:component-scan base-package=”com.springmvc.controller”/> //配置controller的注入
3 配置视图解析器
mvc:annotation-driven/ 相当于注册了DefaultAnnotationHandlerMapping(映射器)和AnnotationMethodHandlerAdapter(适配器)两个bean.即解决了@Controller注解的使用前提配置。
context:component-scan 对指定的包进行扫描,实现注释驱动Bean定义,同时将bean自动注入容器中使用。即解决了@Controller标识的类的bean的注入和使用。
<?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:aop=“http://www.springframework.org/schema/aop”
xmlns:mvc=“http://www.springframework.org/schema/mvc”
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-4.1.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-4.1.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-4.1.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.1.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd”>
<!– 1、配置映射器与适配器 –>
<mvc:annotation-driven></mvc:annotation-driven>
<!– 2、视图解析器 –>
<bean class=“org.springframework.web.servlet.view.InternalResourceViewResolver”>
<span style=“white-space:pre”> </span><!– 前缀和后缀 –>
<property name=“prefix” value=“/”/>
<property name=“suffix” value=“.jsp”/>
</bean>
<!– 3、自动扫描该包,使SpringMVC认为包下用了@controller注解的类是控制器 –>
<context:component-scan base-package=“com.rhzh.controller”/>
</beans>
三 spring-mybatis.xml
需要实现基本功能的配置
1 配置 <context:component-scan base-package=”com.rhzh”/> //自动扫描,将标注Spring注解的类自动转化Bean,同时完成Bean的注入
2 加载数据资源属性文件
3 配置数据源 三种数据源的配置方式 http://blog.csdn.net/yangyz_love/article/details/8199207
4 配置sessionfactory
5 装配Dao接口
6 声明式事务管理
7 注解事务切面
<?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:aop="http://www.springframework.org/schema/aop"
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-4.1.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-4.1.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-4.1.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.1.xsd">
<!--1 自动扫描 将标注Spring注解的类自动转化Bean-->
<context:component-scan base-package="com.rhzh" />
<!--2 加载数据资源属性文件 -->
<bean id="propertyConfigurer"
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="location" value="classpath:jdbc.properties" />
</bean>
<span style="white-space:pre"><!-- 3 配置数据源 --></span>
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
destroy-method="close">
<property name="driverClassName" value="${driver}" />
<property name="url" value="${url}" />
<property name="username" value="${username}" />
<property name="password" value="${password}" />
<!-- 初始化连接大小 -->
<property name="initialSize" value="${initialSize}"></property>
<!-- 连接池最大数量 -->
<property name="maxActive" value="${maxActive}"></property>
<!-- 连接池最大空闲 -->
<property name="maxIdle" value="${maxIdle}"></property>
<!-- 连接池最小空闲 -->
<property name="minIdle" value="${minIdle}"></property>
<!-- 获取连接最大等待时间 -->
<property name="maxWait" value="${maxWait}"></property>
</bean>
<!-- 4 配置sessionfactory -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<!-- 自动扫描mapping.xml文件 -->
<property name="mapperLocations" value="classpath:com/rhzh/mapping/*.xml"></property>
</bean>
<!-- 5 装配dao接口 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.rhzh.dao" /> <!-- DAO接口所在包名,Spring会自动查找其下的类 -->
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
</bean>
<!-- 6、声明式事务管理 -->
<bean id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource" />
</bean>
<!-- 7、注解事务切面 -->
<span style="font-family: Arial, Helvetica, sans-serif;"></span>
<pre name="code" class="html">
<tx:annotation-driven transaction manager="transactionManager"/>
</pre>
</beans>
POM 文件
<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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.android</groupId>
<artifactId>AAFinal</artifactId>
<packaging>war</packaging>
<version>0.0.1-SNAPSHOT</version>
<name>AAFinal Maven Webapp</name>
<url>http://maven.apache.org</url>
<properties>
<!-- Spring版本号 -->
<spring.version>4.1.3.RELEASE</spring.version>
<!--Mybatis版本号 -->
<mybatis.version>3.2.8</mybatis.version>
<!-- log4j日志文件管理包版本 -->
<slf4j.version>1.6.4</slf4j.version>
<log4j.version>1.2.17</log4j.version>
</properties>
<dependencies>
<!-- 分页插件 -->
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper</artifactId>
<version>5.0.3</version>
</dependency>
<dependency>
<groupId>com.github.jsqlparser</groupId>
<artifactId>jsqlparser</artifactId>
<version>0.9.5</version>
</dependency>
<!--逆向工程包 -->
<dependency>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-core</artifactId>
<version>1.3.5</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.10</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<!--Spring 核心包 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-oxm</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</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-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- mybatis核心包 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>${mybatis.version}</version>
</dependency>
<!-- mybatis/spring包 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.2.2</version>
</dependency>
<!-- 导入java ee jar 包 -->
<dependency>
<groupId>javax</groupId>
<artifactId>javaee-api</artifactId>
<version>7.0</version>
</dependency>
<!-- 导入Mysql数据库链接jar包 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.30</version>
</dependency>
<!-- 导入dbcp的jar包,用来在applicationContext.xml中配置数据库 -->
<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>1.2.2</version>
</dependency>
<!-- JSTL标签类 -->
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<!-- 日志文件管理包 -->
<!-- log start -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>${log4j.version}</version>
</dependency>
<!-- 格式化对象,方便输出日志 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.1.41</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>${slf4j.version}</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>${slf4j.version}</version>
</dependency>
<!-- log end -->
<!-- 映入JSON -->
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-mapper-asl</artifactId>
<version>1.9.13</version>
</dependency>
<!-- 上传组件包 -->
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.3.1</version>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.4</version>
</dependency>
<dependency>
<groupId>commons-codec</groupId>
<artifactId>commons-codec</artifactId>
<version>1.9</version>
</dependency>
</dependencies>
<build>
<finalName>AAFinal</finalName>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
<plugin>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-maven-plugin</artifactId>
<version>1.3.2</version>
</plugin>
</plugins>
</build>
</project>