SSM整合

Author:SimpleWu

github(已上传SSMrest风格简单增删该查实例):https://gitlab.com/450255266/code/

目前Spring+SpringMVC+Mybatis是一套非常流行的配套开发框架。

  1. spring核心ioc、aop技术,ioc解耦,使得代码复用,可维护性大幅度提升,aop提供切面编程,同样的增强了生产力。提供了对其他优秀开源框架的集成支持
  2. spring mvc是对比struts2等mvc框架来说的,不说struts2爆出的那么多安全漏洞,而且是类拦截,所有Action变量共享,同时是filter入口的,而spring mvc是方法拦截,controller独享request response数据,采用的serlvet入口,与spring无缝对接。开发而言,spring mvc更加轻量和低入门。
  3. mybatis轻量级半自动化框架,sql由开发者编写可对语句进行调优,并且mybatis使用 方式JAVA代码与SQL可以解耦并且支持动态SQL语句,学习成本低。

框架搭建步骤

导包

  1. 导入Spring+SpringMVC(如果不会选全倒进去就行了)
  2. 导入mybatis包(如果需要用到日志可将mybatis依赖包导入)
  3. 导入mybatis-spring-1.3.1.jar(整合必须又这个包)
  4. 导入c3p0(当然你也可以使用其他连接池)
  5. 导入数据库驱动

配置log4j.properties

由于MyBatis依赖与log4j输出sql语句信息,所以需要配置log4j配置文件。

#设置输出级别和输出位置
log4j.rootLogger=debug,Console
#设置控制台相关的参数
log4j.appender.Console=org.apache.log4j.ConsoleAppender  
log4j.appender.Console.layout=org.apache.log4j.PatternLayout  
log4j.appender.Console.layout.ConversionPattern=%d [%t] %-5p [%c] - %m%n  
#设置MyBatis的输出内容
log4j.logger.java.sql.ResultSet=INFO  
log4j.logger.org.apache=INFO  
log4j.logger.java.sql.Connection=DEBUG  
log4j.logger.java.sql.Statement=DEBUG  
log4j.logger.java.sql.PreparedStatement=DEBUG

配置WEB.

1.设置编码过滤器

<filter>
        <de ion>字符集过滤器</de ion>
        <filter-name>encodingFilter</filter-name>
        <filter-class>org.spring work.web.filter.CharacterEncodingFilter</filter-class>
        <init-param>
            <de ion>字符集编码</de ion>
            <param-name>encoding</param-name>
            <param-value>UTF-8</param-value>
        </init-param>
</filter>
<filter-mapping>
    <filter-name>encodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>

2.添加Spring配置文件位置(等下我们创建spring-context. )

<!-- 配置加载Spring-context文件 -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:spring-context. </param-value>
    </context-param>
<!--添加Spring的监听器-->
    <listener>
        <listener-class>org.spring work.web.context.ContextLoaderListener</listener-class>
    </listener>

3.DispatcherServlet配置

<!-- SprigMVC配置 -->
<servlet>
    <servlet-name>dispatcher</servlet-name>
    <servlet-class>org.spring work.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
        <de ion>springmvc 配置文件</de ion>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:spring-mvc. </param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
    <servlet-name>dispatcher</servlet-name>
    <url-pattern>/</url-pattern>
</servlet-mapping>

4.添加PUT DELETE支持

<!-- 添加PUT DELETE支持 -->
    <filter>
        <filter-name>HiddenHttpMethodFilter</filter-name>
        <filter-class>org.spring work.web.filter.HiddenHttpMethodFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>HiddenHttpMethodFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

5.配置Sessin过期时间

<!-- 配置session超时时间,单位分钟 -->
<session-config>
    <session-timeout>15</session-timeout>
</session-config>

spring-mvc.

<?  version=\"1.0\" encoding=\"UTF-8\"?>
<beans  ns=\"http://www.spring work.org/schema/beans\"
     ns:xsi=\"http://www.w3.org/2001/ Schema-instance\"
     ns:mvc=\"http://www.spring work.org/schema/mvc\"
     ns:context=\"http://www.spring work.org/schema/context\"
    xsi:schemaLocation=\"http://www.spring work.org/schema/mvc http://www.spring work.org/schema/mvc/spring-mvc-4.2.xsd
        http://www.spring work.org/schema/beans http://www.spring work.org/schema/beans/spring-beans.xsd
        http://www.spring work.org/schema/context http://www.spring work.org/schema/context/spring-context-4.2.xsd\">
    <!-- 让扫描spring扫描这个包下所有的类,让标注spring注解的类生效 -->
    <context:component-scan  -package=\"com.simple.ssm.controller\">
        <!-- 只扫描@Controller与@ControllerAdvice修饰的类 -->
        <context:include-filter type=\"annotation\"  =\"org.spring work.stereotype.Controller\"/>
        <context:include-filter type=\"annotation\"  =\"org.spring work.web.bind.annotation.ControllerAdvice\"/>
    </context:component-scan>


    <!-- 加入静态资源与动态资源支持 -->
    <mvc:default-servlet-handler/>
    <mvc:annotation-driven/>
    
    <!-- 视图解析器 -->
    <bean class=\"org.spring work.web.servlet.view.InternalResourceViewResolver\">
        <property name=\"prefix\" value=\"/WEB-INF/views/\" />
        <property name=\"suffix\" value=\".jsp\"></property>
    </bean>

</beans>

spring-context.

<?  version=\"1.0\" encoding=\"UTF-8\"?>
<beans  ns=\"http://www.spring work.org/schema/beans\"
     ns:xsi=\"http://www.w3.org/2001/ Schema-instance\"  ns:tx=\"http://www.spring work.org/schema/tx\"
     ns:context=\"http://www.spring work.org/schema/context\"
     ns:aop=\"http://www.spring work.org/schema/aop\"
    xsi:schemaLocation=\"http://www.spring work.org/schema/beans http://www.spring work.org/schema/beans/spring-beans.xsd
        http://www.spring work.org/schema/context http://www.spring work.org/schema/context/spring-context-4.2.xsd
        http://www.spring work.org/schema/aop http://www.spring work.org/schema/aop/spring-aop-4.2.xsd
        http://www.spring work.org/schema/tx http://www.spring work.org/schema/tx/spring-tx-4.2.xsd\">
    
    <!--引入外部数据库连接信息文件-->
    <context:property-placeholder location=\"classpath:db.properties\" />

    <!-- 扫描所有除@Controller ,@ControllerAdvice修饰的bean -->
    <context:component-scan  -package=\"com.simple.ssm\">
        <context:exclude-filter type=\"annotation\"
             =\"org.spring work.stereotype.Controller\" />
        <context:exclude-filter type=\"annotation\"
             =\"org.spring work.web.bind.annotation.ControllerAdvice\" />
    </context:component-scan>

    <!-- 配置c3p0连接池 -->
    <bean id=\"dataSource\" class=\"com.mchange.v2.c3p0.ComboPooledDataSource\">
        <property name=\"driverClass\" value=\"${mysql.driverClass}\" />
        <!-- jdbc:mysql://localhost/mybatis?characterEncoding=utf8&amp;serverTimezone=UTC -->
        <property name=\"jdbcUrl\" value=\"${mysql.jdbcUrl}\" />
        <!-- 连接用户名 -->
        <property name=\"user\" value=\"${mysql.user}\" />
        <property name=\"password\" value=\"${mysql.password}\" />
        <!-- 连接密码 -->
        <!-- 队列中的最小连接数 -->
        <property name=\"minPoolSize\" value=\"15\" />
        <!-- 队列中的最大连接数 -->
        <property name=\"maxPoolSize\" value=\"25\" />
        <!-- 当连接耗尽时创建的连接数 -->
        <property name=\"acquireIncrement\" value=\"15\" />
        <!-- 等待时间 -->
        <property name=\"checkoutTimeout\" value=\"10000\" />
        <!-- 初始化连接数 -->
        <property name=\"initialPoolSize\" value=\"20\" />
        <!-- 最大空闲时间,超出时间连接将被丢弃 -->
        <property name=\"maxIdleTime\" value=\"20\" />
        <!-- 每隔60秒检测空闲连接 -->
        <property name=\"idleConnectionTestPeriod\" value=\"60000\" />
    </bean>

    <!-- 配置事务管理器 -->
    <bean id=\"transactionManager\"
        class=\"org.spring work.jdbc.datasource.DataSourceTransactionManager\">
        <property name=\"dataSource\" ref=\"dataSource\" />
    </bean>

    <!-- 拦截器方式配置事物 -->
    <!-- 
        <tx:advice id=\"txAdvice\" transaction-manager=\"transactionManager\">
            <tx:attributes>
                <tx:method name=\"add*\" propagation=\"REQUIRED\" />
                <tx:method name=\"insert*\" propagation=\"REQUIRED\" />
                <tx:method name=\"save*\" propagation=\"REQUIRED\" />
                <tx:method name=\"update*\" propagation=\"REQUIRED\" />
                <tx:method name=\"delete*\" propagation=\"REQUIRED\" />
                <tx:method name=\"remove*\" propagation=\"REQUIRED\" />
                <tx:method name=\"find*\" propagation=\"SUPPORTS\" />
                <tx:method name=\"load*\" propagation=\"SUPPORTS\" />
                <tx:method name=\"search*\" propagation=\"SUPPORTS\" />
                <tx:method name=\"*\" propagation=\"SUPPORTS\" />
            </tx:attributes>
        </tx:advice>
     -->

    <!-- 配置切面 -->
    <!-- <aop:config> 事务入口(Service的包路径) <aop:pointcut id=\"transactionPointcut\" 
         =\"execution(* com.simple.ssm.service.*.*(..))\" /> 将事务通知与切入点组合 <aop:advisor 
        pointcut-ref=\"transactionPointcut\" advice-ref=\"txAdvice\" /> </aop:config> -->

    <!-- 使用注解来控制事务 -->
    <tx:annotation-driven transaction-manager=\"transactionManager\" />

    <!-- 配置mybatis, 绑定c3p0 -->
    <bean id=\"sqlSessionFactory\" class=\"org.mybatis.spring.SqlSessionFactoryBean\">
        <property name=\"dataSource\" ref=\"dataSource\" />
        <!-- 配置mybatis配置文件所在位置 -->
        <property name=\"configLocation\" value=\"classpath:mybatis-config. \" />
        <!-- 配置实体类 映射所在位置 -->
        <property name=\"mapperLocations\" value=\"classpath:com/simple/ssm/dao/mapper/*. \" />
    </bean>

    <!-- 扫描生成所有dao层 -->
    <bean class=\"org.mybatis.spring.mapper.MapperScannerConfigurer\">
        <!-- 指定持久化接口包位置 -->
        <property name=\" Package\" value=\"com.simple.ssm.dao\"></property>
        <property name=\"sqlSessionFactoryBeanName\" value=\"sqlSessionFactory\"></property>
    </bean>
</beans>

mybaits-config.

<?  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>
    <settings>
        <!-- 开启驼峰式命名规则 -->
        <setting name=\"mapUnderscoreToCamelCase\" value=\"true\"/>
        <!-- 开启二级缓存 -->
        <setting name=\"cacheEnabled\" value=\"true\"/>
        <!-- 开启懒加载 -->
        <setting name=\"lazyLoadingEnabled\" value=\"true\"/>
    </settings>
    
    <typeAliases>
        <package name=\"com.simple.ssm.entitys\"/>
    </typeAliases>
</configuration>

db.properties(可内置)

mysql.driverClass=com.mysql.jdbc.Driver
mysql.jdbcUrl=jdbc:mysql://localhost/mybatis?characterEncoding=utf8&serverTimezone=UTC
mysql.user=root
mysql.password=root

到这里其实我们的SSM已经整合完成,如果我们需要其他功能可以在加,不要忘记导入包。

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