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SSM框架整合篇

程序员文章站 2022-06-22 11:54:20
[TOC] 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、a ......

目录

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

  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.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="${mysql.driverclass}" />
        <!-- jdbc:mysql://localhost/mybatis?characterencoding=utf8&amp;servertimezone=utc -->
        <property name="jdbcurl" value="${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.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。