前两天讲了怎么在eclipse中安装maven插件,今天来说一下在maven项目中集成SpringMVC Spring Mybatis,也就是现在最流行的SSM框架。话不多少,下面开始!
知识要点:
依赖包的引入
Spring与Mybatis的集成
集成SpringMVC
第一步:在pom.xml中添加一下依赖即可,代码如下:
<properties>
<spring.version>4.3.14.RELEASE</spring.version><!-- Spring版本 -->
<mybatis.version>3.4.0</mybatis.version><!-- mybatis版本 -->
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<!-- springMVC框架的包 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework/spring-web -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-expression</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- spring end -->
<!-- mybatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>${mybatis.version}</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.0</version>
</dependency>
<!-- mysql驱动包 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.35</version>
</dependency>
<!-- json -->
<dependency>
<groupId>net.sf.json-lib</groupId>
<artifactId>json-lib</artifactId>
<version>2.4</version>
<classifier>jdk15</classifier>
</dependency>
<dependency>
<groupId>net.sf.ezmorph</groupId>
<artifactId>ezmorph</artifactId>
<version>1.0.3</version>
</dependency>
<!-- 导入jackson(core和dataBind)这两个包,解决ajax中后台影响乱码问题 -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>2.8.1</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.8.1</version>
</dependency>
<!-- jsob end -->
<!-- 文件上传 -->
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.3.1</version>
</dependency>
<dependency>
<groupId>commons-collections</groupId>
<artifactId>commons-collections</artifactId>
<version>3.2.1</version>
</dependency>
<dependency>
<groupId>commons-beanutils</groupId>
<artifactId>commons-beanutils</artifactId>
<version>1.7.0</version>
</dependency>
<!-- 日志 -->
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.2</version>
</dependency>
<!-- jstl -->
</dependencies>
注:引入相应依赖包的时候还要注意包之间的版本冲突,上面我发的这套是经过测试确定不存在包之间的冲突。
Spring与mybatis的集成
第二步:在src/main/resources下建立db_mysql.properties文件(我用的是mysql数据库),内容如下(部分,也是最基本连接数据库):
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/csrcbms?characterEncoding=utf-8
jdbc.username=root
jdbc.password=123456
建立Spring上下文配置文件
Spring上下文配置文件就是用来完成Spring和Mybatis的整合。主要配置bean自动扫描、依赖注入、数据库、事务等。这里在类路径中建立文件名为beans.xml,或者大多人称为applicationContext.xml,两者都可以,代码如下所示:
<?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:p="http://www.springframework.org/schema/p"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.3.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-4.3.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-4.3.xsd">
<!-- 引入外部属性 -->
<context:property-placeholder location="classpath:db_mysql.properties"/>
<!-- 配置数据源 -->
<bean id="dataSource" class="org.apache.ibatis.datasource.pooled.PooledDataSource">
<property name="url" value="${jdbc.url}"/>
<property name="driver" value="${jdbc.driver}"/>
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
</bean>
<!-- 配置SqlSessionFactory -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"></property>
<!-- 该路径下所有的xml文件 -->
<property name="mapperLocations" value="classpath:com/zxf/beans/*.xml"></property>
<!-- 取别名 -->
<property name="typeAliasesPackage" value="com.zxf.beans"></property>
</bean>
</beans>
第三步:集成SpringMVC
要集成SpringMVC,首先要添加关于springMVC.xml和配置web.xml文件全局加载项。下面我们按步骤进行
一、springMVC.xml配置文件主要用于配置SpringMVC试图解析器和Controller的加载方式,代码如下:
<?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:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-4.3.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.3.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-4.3.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
">
<!-- 开启扫描,用于注解 -->
<context:component-scan base-package="com.zxf"/>
<!-- 自定义消息转换器编码,解决后台传输json回前台时,中文乱码问题 -->
<mvc:annotation-driven><!-- 该标签下的内容可以忽略,如果有json的话可以用词配置解决问题 -->
<mvc:message-converters register-defaults="true">
<bean class="org.springframework.http.converter.StringHttpMessageConverter">
<property name="supportedMediaTypes">
<list>
<value>application/json;charset=utf-8</value>
<value>text/html;charset=utf-8</value>
<!-- application 可以在任意form 表单里 enctype 属性默认找到 -->
<value>application/x-www-form-urlencoded</value>
</list>
</property>
</bean>
<bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter"></bean>
</mvc:message-converters>
</mvc:annotation-driven>
<!-- 上传文件解析 -->
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<property name="defaultEncoding" value="utf-8"></property>
<property name="maxUploadSize" value="500000000"></property>
<property name="maxInMemorySize" value="20000000"></property>
</bean>
<!-- 配置视图解析器 -->
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/"/>
<property name="suffix" value=".jsp"></property>
</bean>
</beans>
二、在web.xml里主要配置Spring和SpringMVC的加载方式,代码如下:
<!DOCTYPE web-app PUBLIC
"-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd" >
<web-app>
<display-name>Archetype Created Web Application</display-name>
<context-param>
<param-name>contextConfigLocation</param-name>
<!-- Spring加载上下文时,引用的Spring配置文件beans.xml -->
<param-value>classpath:beans.xml</param-value>
</context-param>
<!-- 配置监听器 监听beans.xml -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<servlet>
<servlet-name>SpringMVC</servlet-name>
<!-- 前置控制器,目的是拦截匹配的请求,并分发到相应的Controller -->
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<!-- 加载上下文时引用的SpringMVC配置文件:springmvc.xml-->
<param-value>classpath:springmvc.xml</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>SpringMVC</servlet-name>
<!-- 设置拦截规则,表示SpringMVC会拦截URL中带“.handler”的 请求 -->
<url-pattern>*.handler</url-pattern>
</servlet-mapping>
</web-app>
下面是我个人项目模块,仅供借鉴:
至此,Spring SpringMVC和Mybatis之间的集成已经结束,开发过程中若需要用到其他技术可在相应的配置文件中进行配置即可,至于测试小伙伴既然能做到框架集成相信测试不用我列出来