SpringMVC_Spring_mybatis整合流程
1.導入jar包
創建一下文件
web.xml:
<?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_2_5.xsd" id="WebApp_ID" version="2.5">
<display-name>springmvc_spring_mybatis</display-name>
<!--Spring配置: needed for ContextLoaderListener -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>
<!-- Bootstraps the root web application context before servlet initialization -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- 解決post亂碼問題 -->
<filter>
<filter-name>encoding</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<!-- 設置編碼參是UTF8 -->
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encoding</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- SpringMVC配置 -->
<!-- The front controller of this Spring Web application, responsible for handling all application requests -->
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<!-- Map all requests to the DispatcherServlet for handling -->
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
springmvc-servlet.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:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.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-4.0.xsd">
<!-- 只掃描控制器 -->
<!-- <context:component-scan base-package="com.ldp.mybatis.handle" use-default-filters="false">
<context:include-filter type="annotation" expression="org.springframework.stereotype.Controller "/>
</context:component-scan> -->
<context:component-scan base-package="com.ldp.mybatis.handle"></context:component-scan>
<!-- 定義視圖解析器 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
<!-- 加入註解驅動 -->
<mvc:annotation-driven/>
<!-- 掃描靜態資源文件 -->
<mvc:default-servlet-handler/>
</beans>
dbconfig.properties
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/mybatis_emp
jdbc.username=root
jdbc.password=123456
ehcache.xml
<?xml version="1.0" encoding="UTF-8"?>
<ehcache xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:noNamespaceSchemaLocation="../config/ehcache.xsd">
<!-- 磁盤保存路徑 -->
<diskStore path="D:\44\ehcache" />
<defaultCache
maxElementsInMemory="10000"
maxElementsOnDisk="10000000"
eternal="false"
overflowToDisk="true"
timeToIdleSeconds="120"
timeToLiveSeconds="120"
diskExpiryThreadIntervalSeconds="120"
memoryStoreEvictionPolicy="LRU">
</defaultCache>
</ehcache>
<!--
屬性說明:
l diskStore:指定數據在磁盤中的存儲位置。
l defaultCache:當藉助CacheManager.add("demoCache")創建Cache時,EhCache便會採用<defalutCache/>指定的的管理策略
以下屬性是必須的:
l maxElementsInMemory - 在內存中緩存的element的最大數目
l maxElementsOnDisk - 在磁盤上緩存的element的最大數目,若是0表示無窮大
l eternal - 設定緩存的elements是否永遠不過期。如果爲true,則緩存的數據始終有效,如果爲false那麼還要根據timeToIdleSeconds,timeToLiveSeconds判斷
l overflowToDisk - 設定當內存緩存溢出的時候是否將過期的element緩存到磁盤上
以下屬性是可選的:
l timeToIdleSeconds - 當緩存在EhCache中的數據前後兩次訪問的時間超過timeToIdleSeconds的屬性取值時,這些數據便會刪除,默認值是0,也就是可閒置時間無窮大
l timeToLiveSeconds - 緩存element的有效生命期,默認是0.,也就是element存活時間無窮大
diskSpoolBufferSizeMB 這個參數設置DiskStore(磁盤緩存)的緩存區大小.默認是30MB.每個Cache都應該有自己的一個緩衝區.
l diskPersistent - 在VM重啓的時候是否啓用磁盤保存EhCache中的數據,默認是false。
l diskExpiryThreadIntervalSeconds - 磁盤緩存的清理線程運行間隔,默認是120秒。每個120s,相應的線程會進行一次EhCache中數據的清理工作
l memoryStoreEvictionPolicy - 當內存緩存達到最大,有新的element加入的時候, 移除緩存中element的策略。默認是LRU(最近最少使用),可選的有LFU(最不常使用)和FIFO(先進先出)
-->
log4j.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/">
<appender name="STDOUT" class="org.apache.log4j.ConsoleAppender">
<param name="Encoding" value="UTF-8" />
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="%-5p %d{MM-dd HH:mm:ss,SSS} %m (%F:%L) \n" />
</layout>
</appender>
<logger name="java.sql">
<level value="debug" />
</logger>
<logger name="org.apache.ibatis">
<level value="info" />
</logger>
<root>
<level value="debug" />
<appender-ref ref="STDOUT" />
</root>
</log4j:configuration>
mybatis-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>
<setting name="mapUnderscoreToCamelCase" value="true"/>
<setting name="jdbcTypeForNull" value="NULL"/>
<!--顯式的指定每個我們需要更改的配置的值,即使他是默認的。防止版本更新帶來的問題 -->
<setting name="cacheEnabled" value="true"/>
<setting name="lazyLoadingEnabled" value="true"/>
<setting name="aggressiveLazyLoading" value="false"/>
</settings>
<databaseIdProvider type="DB_VENDOR">
<property name="MySQL" value="mysql"/>
<property name="Oracle" value="oracle"/>
<property name="SQL Server" value="sqlserver"/>
</databaseIdProvider>
</configuration>
applicationContext.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:aop="http://www.springframework.org/schema/aop"
xmlns:cache="http://www.springframework.org/schema/cache"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:mybatis-spring="http://mybatis.org/schema/mybatis-spring"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache-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/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
http://mybatis.org/schema/mybatis-spring http://mybatis.org/schema/mybatis-spring-1.2.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd">
<!-- Spring希望管理所有的業務邏輯組件等。。 -->
<context:component-scan base-package="com.ldp.mybatis">
<!-- 除了控制層 -->
<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan>
<!-- Spring用來控制業務邏輯、數據源、事務控制、aop等 -->
<!-- 定義數據利用的是c3p0管理數據源 -->
<!-- 引入數據庫的配置文件 -->
<context:property-placeholder location="classpath:dbconfig.properties" />
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="jdbcUrl" value="${jdbc.url}"></property>
<property name="driverClass" value="${jdbc.driver}"></property>
<property name="user" value="${jdbc.username}"></property>
<property name="password" value="${jdbc.password}"></property>
</bean>
<!-- spring事務管理 -->
<bean id="TransactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"></property>
</bean>
<!-- 開啓基於註解的事務 -->
<tx:annotation-driven transaction-manager="TransactionManager"/>
<!--
整合mybatis
目的:1、spring管理所有組件。mapper的實現類。
service==>Dao @Autowired:自動注入mapper;
2、spring用來管理事務,spring聲明式事務
-->
<!--創建出SqlSessionFactory對象 -->
<bean id="sqlSessionFactoryBean" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"></property>
<!-- configLocation指定全局配置文件的位置 -->
<property name="configLocation" value="classpath:mybatis-config.xml"></property>
<!-- 定義別名處理器 -->
<property name="typeAliasesPackage" value="com.ldp.mybatis.bean"></property>
<!--mapperLocations: 指定mapper文件的位置-->
<!-- <property name="mapperLocations" value="com.ldp.mybatis.dao"></property> -->
</bean>
<!--配置一個可以進行批量執行的sqlSession -->
<bean id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate">
<constructor-arg name="sqlSessionFactory" ref="sqlSessionFactoryBean"></constructor-arg>
<constructor-arg name="executorType" value="BATCH"></constructor-arg>
</bean>
<!-- 掃描所有的mapper接口的實現,讓這些mapper能夠自動注入;
base-package:指定mapper接口的包名
-->
<mybatis-spring:scan base-package="com.ldp.mybatis.dao"/>
<!-- 老版本的項目建議使用 -->
<!-- <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.ldp.mybatis.dao"></property>
</bean> -->
</beans>
整個項目的文件