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ssm框架整合教程(Spring+SpringMVC+Mybatis)_Mybatis通用mapper插件

Javaweb 太平洋学习网 0浏览 评论

小编前段时间写了一篇ssm框架整合的教程,并添加了Mybatis通用mapper插件,整个ssm三大框架(Spring+SpringMVC+Mybatis)整合过程太复杂,步骤比较多,而且还有一些重复的配置,如果有兴趣,可以分别学习ssm框架的整合,如下所示:

最容易的ssm三大框架整合(spring+springmvc+mybatis)教程

ssm框架使用通用Mapper和BaseService

mybatis generator插件maven自动生成dao,model,mapper

所以这次将这ssm三大框架的整合进行了大量的优化与缩减,学习起来就非常容易了,步骤也会少很多,也比较科学,那么我们该如何整合ssm框架呢?先看小编的目录:

1:添加mysql数据库连接信息与log4j日志配置

2:添加mybatis分页助手

3:mybatis与spring整合,并添加mysql datasource数据源,以及配置事务管理器

4:配置springmvc视图控制器

5:在web.xml中配置启动spring,并加载springmvc

先看看小编的项目分包结构吧,这样比较容易理解整个ssm框架的整合过程了:

20180621142004.jpg

让我们开始学习如何整合SSM框架吧!

开始之前请加入ssm框架所需要的所有jar包,如下:

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.voavoice</groupId>
  <artifactId>english</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>war</packaging>
<!-- 集中定义依赖版本号 -->
<properties>
  <junit.version>4.10</junit.version>
  <spring.version>4.1.3.RELEASE</spring.version>
  <mybatis.version>3.2.8</mybatis.version>
  <mybatis.spring.version>1.2.2</mybatis.spring.version>
  <mybatis.paginator.version>1.2.15</mybatis.paginator.version>
  <mysql.version>5.1.32</mysql.version>
  <slf4j.version>1.6.4</slf4j.version>
  <druid.version>1.0.9</druid.version>
  <jolbox.version>0.8.0.RELEASE</jolbox.version>
  <httpclient.version>4.3.5</httpclient.version>
  <jstl.version>1.2</jstl.version>
  <servlet-api.version>2.5</servlet-api.version>
  <jsp-api.version>2.0</jsp-api.version>
  <mapper.version>2.3.4</mapper.version>
  <pagehelper.version>3.7.5</pagehelper.version>
  <jsqlparser.version>0.9.1</jsqlparser.version>
  <joda-time.version>2.5</joda-time.version>
  <commons-lang3.version>3.3.2</commons-lang3.version>
  <commons-io.version>1.3.2</commons-io.version>
  <commons-fileupload.version>1.3.2</commons-fileupload.version>
  <commons-codec.version>1.9</commons-codec.version>
  <hibernate-validator.version>5.1.3.Final</hibernate-validator.version>
 </properties>
 
  <dependencies>
   <!-- 单元测试 -->
   <dependency>
    <groupId>junit</groupId>
    <artifactId>junit</artifactId>
    <version>${junit.version}</version>
    <scope>test</scope>
   </dependency>
   <!-- Spring -->
   <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-context</artifactId>
    <version>${spring.version}</version>
   </dependency>
   <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-beans</artifactId>
    <version>${spring.version}</version>
   </dependency>
   <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-webmvc</artifactId>
    <version>${spring.version}</version>
   </dependency>
   <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-jdbc</artifactId>
    <version>${spring.version}</version>
   </dependency>
   <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-aspects</artifactId>
    <version>${spring.version}</version>
   </dependency>
   <!-- Mybatis -->
   <dependency>
    <groupId>org.mybatis</groupId>
    <artifactId>mybatis</artifactId>
    <version>${mybatis.version}</version>
   </dependency>
   <dependency>
    <groupId>org.mybatis</groupId>
    <artifactId>mybatis-spring</artifactId>
    <version>${mybatis.spring.version}</version>
   </dependency>
   <!-- 通用Mapper -->
   <dependency>
    <groupId>com.github.abel533</groupId>
    <artifactId>mapper</artifactId>
    <version>${mapper.version}</version>
   </dependency>
   
   <!-- 分页助手 -->
   <dependency>
    <groupId>com.github.pagehelper</groupId>
    <artifactId>pagehelper</artifactId>
    <version>${pagehelper.version}</version>
   </dependency>
   <dependency>
    <groupId>com.github.jsqlparser</groupId>
    <artifactId>jsqlparser</artifactId>
    <version>${jsqlparser.version}</version>
   </dependency>
   <!-- MySql -->
   <dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>${mysql.version}</version>
   </dependency>
   <!-- 日志 -->
   <dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-log4j12</artifactId>
    <version>${slf4j.version}</version>
   </dependency>
   <dependency>
    <groupId>com.jolbox</groupId>
    <artifactId>bonecp-spring</artifactId>
    <version>${jolbox.version}</version>
   </dependency>
   
   <!-- httpclient -->
   <dependency>
    <groupId>org.apache.httpcomponents</groupId>
    <artifactId>httpclient</artifactId>
    <version>${httpclient.version}</version>
   </dependency>
   <!-- JSP相关 -->
   <dependency>
    <groupId>jstl</groupId>
    <artifactId>jstl</artifactId>
    <version>${jstl.version}</version>
   </dependency>
   <dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>servlet-api</artifactId>
    <version>${servlet-api.version}</version>
    <scope>provided</scope>
   </dependency>
   <dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>jsp-api</artifactId>
    <version>${jsp-api.version}</version>
    <scope>provided</scope>
   </dependency>
   <!-- 时间操作组件 -->
   <dependency>
    <groupId>joda-time</groupId>
    <artifactId>joda-time</artifactId>
    <version>${joda-time.version}</version>
   </dependency>
   <!-- Apache工具组件 -->
   <dependency>
    <groupId>org.apache.commons</groupId>
    <artifactId>commons-lang3</artifactId>
    <version>${commons-lang3.version}</version>
   </dependency>
   <dependency>
    <groupId>org.apache.commons</groupId>
    <artifactId>commons-io</artifactId>
    <version>${commons-io.version}</version>
   </dependency>
   <dependency>
    <groupId>commons-fileupload</groupId>
    <artifactId>commons-fileupload</artifactId>
    <version>${commons-fileupload.version}</version>
	</dependency>
   <!-- 加密解密 -->
   <dependency>
    <groupId>commons-codec</groupId>
    <artifactId>commons-codec</artifactId>
    <version>${commons-codec.version}</version>
   </dependency>
   <!-- 数据校验 -->
   <dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-validator</artifactId>
    <version>${hibernate-validator.version}</version>
   </dependency>
	<dependency>
	 <groupId>com.alibaba</groupId>
	 <artifactId>fastjson</artifactId>
	 <version>1.2.38</version>
	</dependency>
  </dependencies>
  	<build>
		<finalName>english</finalName>
		<plugins>
			<plugin>
			    <groupId>org.apache.tomcat.maven</groupId>
			    <artifactId>tomcat7-maven-plugin</artifactId>
			    <version>2.2</version>
				<configuration>
					<port>8080</port>
					<path>/</path>
					<uriEncoding>UTF-8</uriEncoding>
				</configuration>
			</plugin>
		</plugins>
	</build>
</project>

步骤一:在项目的resources目录下添加jdbc.properties配置,用于配置数据库连接信息,代码如下:

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://125.256.217.215:3306/voa?useUnicode=true&characterEncoding=utf8&autoReconnect=true&allowMultiQueries=true
jdbc.username=root
jdbc.password=root
jdbc.idleConnection=60
jdbc.idleMaxAge=30
jdbc.maxConnectionNum=200
jdbc.minConnectionNum=5

为了能正常操作数据库,记录服务器的log日志,需要添加log4j.properties日志信息文件,代码如下:

# Configure logging for testing: optionally with log file
log4j.rootLogger=WARN, stdout
# log4j.rootLogger=WARN, stdout, logfile

log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d %p [%c] - %m%n

log4j.appender.logfile=org.apache.log4j.FileAppender
log4j.appender.logfile.File=target/spring.log
log4j.appender.logfile.layout=org.apache.log4j.PatternLayout
log4j.appender.logfile.layout.ConversionPattern=%d %p [%c] - %m%n

步骤二:添加mybatis的相关配置,例如mybatis通用mapper插件与pageHelper分页助手等,新建mybatis-config.xml文件,代码如下:

<?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>
	<!-- 引入外部资源配置文件 -->
	<!-- <properties resource="jdbc.properties" /> -->
	<plugins>
		<!-- 分页助手 -->
		<plugin interceptor="com.github.pagehelper.PageHelper">
			<property name="dialect" value="mysql" />
			<!-- 设置为true时,使用RowBounds分页会进行count查询 -->
			<property name="rowBoundsWithCount" value="true" />
		</plugin>

		<!-- 通用mapper插件 -->
		<plugin interceptor="com.github.abel533.mapperhelper.MapperInterceptor">
			<!--主键自增回写方法,默认值MYSQL,详细说明请看文档 -->
			<property name="IDENTITY" value="mysql" />
			<!--通用Mapper接口,多个通用接口用逗号隔开 -->
			<property name="mappers" value="com.github.abel533.mapper.Mapper" />
		</plugin>
	</plugins>
</configuration>

步骤三:spring与mybatis整合,添加mybatis数据源,并配置数据库事务回滚等,用于出错时回滚数据,新建spring-context.xml文件,添加配置如下:

<?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:p="http://www.springframework.org/schema/p"
	xmlns:context="http://www.springframework.org/schema/context"
	xmlns:aop="http://www.springframework.org/schema/aop"
	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/context http://www.springframework.org/schema/context/spring-context.xsd
        http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd 
        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">
	
	<!-- 使用spring自带的占位符替换功能 -->
	<bean
		class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
		<!-- 允许JVM参数覆盖 -->
		<property name="systemPropertiesModeName" value="SYSTEM_PROPERTIES_MODE_OVERRIDE" />
		<!-- 忽略没有找到的资源文件 -->
		<property name="ignoreResourceNotFound" value="true" />
		<!-- 加载数据库资源文件 -->
		<property name="locations">
			<list>
				<value>classpath:jdbc.properties</value>
			</list>
		</property>
		</bean>
		
		<!-- 扫描基本包 -->
		<context:component-scan base-package="com.voavoice.english" />
		
		<bean id="dataSource" class="com.jolbox.bonecp.BoneCPDataSource"
		destroy-method="close">
		<!-- 数据库驱动 -->
		<property name="driverClass" value="${jdbc.driver}" />
		<!-- 相应驱动的jdbcUrl -->
		<property name="jdbcUrl" value="${jdbc.url}" />
		<!-- 数据库的用户名 -->
		<property name="username" value="${jdbc.username}" />
		<!-- 数据库的密码 -->
		<property name="password" value="${jdbc.password}" />
		<!-- 检查数据库连接池中空闲连接的间隔时间,单位是分,默认值:240,如果要取消则设置为0 -->
		<property name="idleConnectionTestPeriod" value="${jdbc.idleConnection}" />
		<!-- 连接池中未使用的链接最大存活时间,单位是分,默认值:60,如果要永远存活设置为0 -->
		<property name="idleMaxAge" value="${jdbc.idleMaxAge}" />
		<!-- 每个分区最大的连接数 -->
		<property name="maxConnectionsPerPartition" value="${jdbc.maxConnectionNum}" />
		<!-- 每个分区最小的连接数 -->
		<property name="minConnectionsPerPartition" value="${jdbc.minConnectionNum}" />
	</bean>
	
	<!-- sqlSessionFactory配置 -->
	<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
		<!-- 配置数据源 -->
		<property name="dataSource" ref="dataSource"/>
		<!-- 扫描mybatis全局文件 -->
		<property name="configLocation" value="classpath:mybatis/mybatis-config.xml"/>
		<!-- 扫描mapper映射文件 -->
		<property name="mapperLocations" value="classpath:mapper/*.xml"/>		
		<!-- 配置别名包扫描,实体类 -->
		<property name="typeAliasesPackage" value="com.voavoice.english.entity"/>
		
	</bean>
	
	<!-- 扫描mapper接口文件-->
	<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
		<property name="basePackage" value="com.voavoice.english.dao"/>
	</bean>		
	
	<!-- 定义事务管理器 -->
	<bean id="transactionManager"
		class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
		<property name="dataSource" ref="dataSource" />
	</bean>

	<!-- 定义事务策略 -->
	<tx:advice id="txAdvice" transaction-manager="transactionManager">
		<tx:attributes>
			<!--所有以query开头的方法都是只读的 -->
			<tx:method name="query*" read-only="true" />
			<tx:method name="get*" read-only="true" />
			<tx:method name="find*" read-only="true" />
			<tx:method name="select*" read-only="true" />
			<!--其他方法使用默认事务策略 -->
			<tx:method name="*" rollback-for="Throwable"/>
		</tx:attributes>
	</tx:advice>

	<aop:config>
		<aop:pointcut id="myPointcut" expression="execution(* com.voavoice.english.service.*.*(..))" />
		<!--将定义好的事务处理策略应用到上述的切入点 -->
		<aop:advisor advice-ref="txAdvice" pointcut-ref="myPointcut" />
	</aop:config>
	
</beans>

步骤四:配置springmvc视图控制器,用于前端界面跳转时寻找jsp文件,以及controller接口的扫描,新建spring-mvc.xml文件,配置如下:

<?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:p="http://www.springframework.org/schema/p"
	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.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
	<!-- 注解驱动 -->
	<mvc:annotation-driven/>

	<!-- 描述conctroller -->
	<context:component-scan base-package="com.voavoice.english.controller"/>
	
	<!-- 视图解释器 -->
	<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<!-- 前缀 -->
		<property name="prefix" value="/WEB-INF/views/"/>
		<!-- 后缀 -->
		<property name="suffix" value=".jsp"/>
	</bean>
	<!-- 定义图片解释器 -->
	<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">  
		<!-- 设置默认编码 -->
		<property name="defaultEncoding" value="utf-8"></property>
		<!-- 上传图片最大大小5M--> 
		<property name="maxUploadSize" value="52424400"></property>  
	</bean>  
</beans>

步骤五:在web.xml文件中加载spring-context.xml,并启动springmvc控制器,配置如下:

<?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_3_0.xsd"
         id="WebApp_ID" version="3.0">
	<!-- 启动spring -->
	<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>classpath:spring/spring-context.xml</param-value>
	</context-param>
	
	<!-- applicationContext -->
	<listener>
		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
	</listener>
	
	<!-- 编码过滤器,以UTF8编码 -->
	<filter>
		<filter-name>encodingFilter</filter-name>
		<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
		<init-param>
			<param-name>encoding</param-name>
			<param-value>UTF8</param-value>
		</init-param>
	</filter>
	<filter-mapping>
		<filter-name>encodingFilter</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>
	
	<!-- 加载springMVC -->
	<servlet>
		<servlet-name>english</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
		<init-param>
			<param-name>contextConfigLocation</param-name>
			<param-value>classpath:spring/spring-mvc.xml</param-value>
		</init-param>
		<load-on-startup>1</load-on-startup>
	</servlet>
	
	<servlet-mapping>
		<servlet-name>english</servlet-name>
		<url-pattern>/*</url-pattern>		
	</servlet-mapping>
	
    <welcome-file-list>
    	<welcome-file>index.jsp</welcome-file>
    </welcome-file-list>

</web-app>

在eclipse中使用maven的“tomcat7:run”命令启动tomcat即可成功启动,如果要测试mysql数据库是否连接成功,可以参考spring junit的测试是否能正常连接数据库,并插入一条数据到mysql表中,参考链接:springmvc+spring+junit4单元测试案例


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