Spring+SpringMVC+MyBatis企业级应用
目录
古老的SSM企业级应用
Author:SimpleWu
目前Spring+SpringMVC+Mybatis也算是一套非常流行的配套开发框架。
- 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
- 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。
- 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XML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
- 导入Spring+SpringMVC(如果不会选全倒进去就行了)
- 导入mybatis包(如果需要用到日志可将mybatis依赖包导入)
- 导入mybatis-spring-1.3.1.jar(整合必须又这个包)
- 导入c3p0(当然你也可以使用其他连接池)
- 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.xml
1.设置编码过滤器
<filter>
<description>字符集过滤器</description>
<filter-name>encodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<description>字符集编码</description>
<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.xml)
<!-- 配置加载Spring-context文件 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring-context.xml</param-value>
</context-param>
<!--添加Spring的监听器-->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
3.DispatcherServlet配置
<!-- SprigMVC配置 -->
<servlet>
<servlet-name>dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<description>springmvc 配置文件</description>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring-mvc.xml</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.springframework.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.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:mvc="http://www.springframework.org/schema/mvc"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.2.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.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 base-package="com.simple.ssm.controller">
<!-- 只扫描@Controller与@ControllerAdvice修饰的类 -->
<context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
<context:include-filter type="annotation" expression="org.springframework.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.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/views/" />
<property name="suffix" value=".jsp"></property>
</bean>
</beans>
spring-context.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:tx="http://www.springframework.org/schema/tx"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.2.xsd
http://www.springframework.org/schema/tx http://www.springframework.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 base-package="com.simple.ssm">
<context:exclude-filter type="annotation"
expression="org.springframework.stereotype.Controller" />
<context:exclude-filter type="annotation"
expression="org.springframework.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="${mysql.driverClass}" />
<!-- jdbc:mysql://localhost/mybatis?characterEncoding=utf8&serverTimezone=UTC -->
<property name="jdbcUrl" value="${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.springframework.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"
expression="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.xml" />
<!-- 配置实体类XML映射所在位置 -->
<property name="mapperLocations" value="classpath:com/simple/ssm/dao/mapper/*.xml" />
</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="basePackage" value="com.simple.ssm.dao"></property>
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
</bean>
</beans>
mybaits-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>
<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。
学习是永无止境的。