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SSM框架整合

2016/02/10

本文于798天之前发表，文中内容可能已经过时。

SSM框架整合

SSM架构设计图
导包
xml文件配置

SSM架构设计图

ssm架构

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1.SpringMVC框架控制Controller层其中需要配置注解标签/包扫描/视图
解析器
2.Spring框架控制Service层其中需要配置包扫描(项目中全部的框架包)
/数据源/声明式事务处理
3.Mybatis框架控制Mapper层(dao)需要配置sqlMapConfig.xml
XXXMapper.xml文件
4.tomcat容器整合通过web.xml容器管理Spring框架.其中Spring
框架整合Mybatis框架

导包

<dependencies>
  <dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-webmvc</artifactId>
  <version>3.2.8.RELEASE</version>
</dependency>
  <dependency>
  <groupId>com.fasterxml.jackson.core</groupId>
  <artifactId>jackson-databind</artifactId>
  <version>2.5.0</version>
</dependency>
<dependency>
  <groupId>com.fasterxml.jackson.core</groupId>
  <artifactId>jackson-annotations</artifactId>
  <version>2.5.0</version>
</dependency>
  <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.2.8</version>
</dependency>
<dependency>
  <groupId>mysql</groupId>
  <artifactId>mysql-connector-java</artifactId>
  <version>5.1.2</version>
</dependency>
<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>druid</artifactId>
    <version>1.0.23</version>
</dependency>
<dependency>
  <groupId>org.mybatis</groupId>
  <artifactId>mybatis-spring</artifactId>
  <version>1.2.4</version>
</dependency>
<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-jdbc</artifactId>
  <version>3.2.8.RELEASE</version>
</dependency>
<dependency>
    <groupId>junit</groupId>
    <artifactId>junit</artifactId>
    <version>4.12</version>
</dependency>
<dependency>
  <groupId>commons-codec</groupId>
  <artifactId>commons-codec</artifactId>
  <version>1.10</version>
</dependency>
<dependency>
  <groupId>org.aspectj</groupId>
  <artifactId>aspectjweaver</artifactId>
  <version>1.8.0</version>
</dependency>
<dependency>
  <groupId>org.aspectj</groupId>
  <artifactId>aspectjtools</artifactId>
  <version>1.8.0</version>
</dependency>
<dependency>
  <groupId>org.aspectj</groupId>
  <artifactId>aspectjrt</artifactId>
  <version>1.8.0</version>
</dependency>
<dependency>
  <groupId>org.apache.poi</groupId>
  <artifactId>poi</artifactId>
  <version>3.12</version>
</dependency>
<dependency>
  <groupId>commons-fileupload</groupId>
  <artifactId>commons-fileupload</artifactId>
  <version>1.3.1</version>
</dependency>
  </dependencies>

SpringMVC配置

<?xml version="1.0" encoding="UTF-8"?>
<beansxmlns="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.xsd
    http://www.springframework.org/schema/mvc 
    http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
    http://www.springframework.org/schema/context 
    http://www.springframework.org/schema/context/spring-context.xsd">

<!--开启mvc的注解形式  -->
<mvc:annotation-driven/>
<!--开启包扫描 controller -->
<context:component-scan
base-package="com.jt.manage.controller"/>
<!--配置视图解析器内部资源视图解析器
    配置前缀和后缀
    前缀:/WEB-INF/views/
    后缀:.jsp
    注意"/WEB-INF" 中的 "/"不能省略
    否则是相对路径
-->
<bean id="internalResource" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <property name="prefix" value="/WEB-INF/views/"/>
    <property name="suffix" value=".jsp"/>
</bean>
</beans>

Web.xml配置

<!--1.配置前端控制器servletcontextConfigLocation  -->
<servlet>
    <servlet-name>springmvc</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:/spring/applicationContext-mvc.xml</param-value>
    </init-param>
</servlet>
<!--编辑拦截的路径  /只拦截请求的前缀至于
    请求的后缀是什么一律忽略
    /hello.action
    /hello.do
    /hello
    规定如果写 / 会拦截请求和静态资源(jscss图片)
    / 不拦截JSP 目的为了RestFul传参
 -->
<servlet-mapping>
    <servlet-name>springmvc</servlet-name>
    <url-pattern>/</url-pattern>
</servlet-mapping>
<!--配置POST乱码的过滤器  -->
<filter>
    <filter-name>characterEncoding</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>
</filter>
<filter-mapping>
    <filter-name>characterEncoding</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>

Spring的配置文件

<beansxmlns="http://www.springframework.org/schema/beans"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:aop="http://www.springframework.org/schema/aop"
    xmlns:tx="http://www.springframework.org/schema/tx"
    xmlns:util="http://www.springframework.org/schema/util"
    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-4.0.xsd
    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
    http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
    http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
    http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.0.xsd">

<!--添加Spring的配置文件
    1.开启包扫描
    2配置数据源
    3添加声明式事务处理
-->

<context:component-scanbase-package="com.jt"/>

<!--引入外部配置文件作用:可以引入多个properties文件-->
<beanid="propertyPlaceholder"

class=”org.springframework.beans.factory.config.PropertyPlaceholderConfigurer”>

<propertyname=”locations”>

classpath:/properties/jdbc.properties


<!--配置连接池 -->
<beanid="dataSource" class="com.alibaba.druid.pool.DruidDataSource" destroy-method="close">
    <property name="driverClassName" value="${jdbc.driver}" />
    <property name="url" value="${jdbc.url}" />
    <property name="username" value="${jdbc.username}" />
    <property name="password" value="${jdbc.password}" />
    <!-- 初始化连接大小 -->
    <property name="initialSize" value="${jdbc.initialSize}" />
    <!-- 连接池最大数量 -->
    <property name="maxActive" value="${jdbc.maxActive}" />
    <!-- 连接池最小空闲 -->
    <property name="minIdle" value="${jdbc.minIdle}" />
    <!-- 获取连接最大等待时间 -->
    <property name="maxWait" value="${jdbc.maxWait}" />
</bean>
<!--声明式事务处理
    <tx:annotation-driven/>优点配置简单缺点:每个方法都必须添加注解
-->

<!--1. 配置事务管理器
    事务控制器如果控制事务必须获取数据源否则不能拦截
    提交事务回滚事务
  -->
<beanid="transactionManager"
    class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
    <propertyname="dataSource" ref="dataSource"></property>
</bean>

<!--2.配置事务通知 AOP
    属性介绍:
        propagation="REQUIRED" 必须添加一个事务
        propagation="SUPPORTS" 表示事务支持
  -->
<tx:adviceid="txAdvice" transaction-manager="transactionManager">
    <!--定义事务策略  -->
    <tx:attributes>
        <tx:methodname="save*" propagation="REQUIRED"/>
        <tx:methodname="delete*" propagation="REQUIRED"/>
        <tx:methodname="update*" propagation="REQUIRED"/>
        <tx:methodname="find*" propagation="SUPPORTS" read-only="true"/>
        <tx:methodname="*" propagation="SUPPORTS" read-only="true"/>
    </tx:attributes>
</tx:advice>

<!--
    3.生成事务切面
    execution(返回值类型包名.类名.方法名(参数列表))
-->
<aop:config>
    <aop:pointcut
expression="execution(* com.jt.manage.service..*.*(..))" id="pc"/>
    <aop:advisoradvice-ref="txAdvice" pointcut-ref="pc"/>
</aop:config>

</beans>

Spring管理Mybatis

  • 编辑mybatis-config配置文件

    <configuration>

<!--作用:
1.添加数据源
2.可以配置缓存
    一级缓存: 默认开启在sqlSession内实现数据共享
    二级缓存: 默认关闭的要求对象序列化添加二级缓存标签<cache>
            在sqlSessionFactory内实现数据共享
3.添加插件(通用Mapper,分页插件)
4.Mybatis中的自动映射
    字段对象
    id        id可以映射
    name      name    可以映射
    user_ageuser_age默认不能映射
    userAge经过驼峰映射可以实现自动的映射
    原理:
        mybatis在进行对象映射时,会自动的将"_"去掉,之后
    首字母大写,实现与对象属性的自动映射.
    注意事项:
        如果开启了驼峰映射规则,则必须满足要求
        (映射后的名称与属性一致),否则不能映射
  -->
<settings>
    <!--开启驼峰自动映射 -->
    <setting name="mapUnderscoreToCamelCase"value="true"/>
    <!--二级缓存的总开关，被redis替代 -->
    <setting name="cacheEnabled"value="false"/>
</settings>

  • 编辑Mybatis的映射文件

        <?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPEmapper
PUBLIC"-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">

<!--namespace作用???
    1.是映射文件的唯一标识
    2.应该与接口的路径保持一致
    3.根据操作的数据表的不同,生成不同的namespace
    一个表对应的一个XXXMapper接口
   -->
<mapper namespace="com.jt.manage.mapper.UserMapper">

    <!--查询user表的全部数据
        要求:id应该和接口方法名称保持一致
      -->
    <select id="findAll"resultType="User">
        select * from user
    </select>
</mapper>

  • 编辑application-mybatis配置文件

        <?xml version="1.0" encoding="UTF-8"?>
<beansxmlns="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.xsd
        http://www.springframework.org/schema/mvc 
        http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
        http://www.springframework.org/schema/context 
        http://www.springframework.org/schema/context/spring-context.xsd">

    <!--spring管理Mybatis
        1.spring整合sqlSessionFactoryBean
        2.添加数据源
        3.添加Mybatis自己的配置文件
            1.sqlMapConfig.xml 核心
            2.XXXMapper.xml    映射文件(sql)
        4.为Mapper接口生成代理对象
            JDK的动态代理    被代理者必须有接口
            CGLib代理对象没有要求

            private Resource configLocation;
            private Resource[] mapperLocations;
      -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
            <property name="dataSource" ref="dataSource"/>
            <property name="configLocation"
            value="classpath:/mybatis/mybatis-config.xml"/>

            <property name="mapperLocations"
            value="classpath:/mybatis/mappers/*.xml"/>

            <!--配置别名包 -->
            <property name="typeAliasesPackage"
            value="com.jt.manage.pojo"/>
    </bean>

    <!--为Mapper接口生成代理对象

        原理:Spring为Mybatis的Mapper接口生成代理对象,
        由于Mapper的接口众多,Spring通过包扫描的方式,为包中的
        全部接口通过JDK的动态代理方式创建代理对象.将对象保存到
        Spring容器中,如果需要动态注入时实现赋值.
      -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage"
        value="com.jt.manage.mapper"/>
    </bean>
</beans>

    Web容器整合Spring容器

    <?xml version="1.0" encoding="UTF-8"?>

    <web-appxmlns: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_2_5.xsd"
id="jt-manage" version="2.5">
<display-name>jt-manage</display-name>

<!--1.配置前端控制器servletcontextConfigLocation  -->
<servlet>
    <servlet-name>springmvc</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:/spring/applicationContext*.xml</param-value>
    </init-param>
</servlet>

<!--编辑拦截的路径  /只拦截请求的前缀至于
    请求的后缀是什么一律忽略
    /hello.action
    /hello.do
    /hello
    规定如果写 / 会拦截请求和静态资源(jscss图片)
    / 不拦截JSP 目的为了RestFul传参
 -->
<servlet-mapping>
    <servlet-name>springmvc</servlet-name>
    <url-pattern>/</url-pattern>
</servlet-mapping>
<!--配置POST乱码的过滤器  -->
<filter>
    <filter-name>characterEncoding</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>
</filter>
<filter-mapping>
    <filter-name>characterEncoding</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>

<welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
</welcome-file-list>

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