Maven + SSM整合
1开发环境搭建
1.1Eclipse4.7(Oxygen) + Tomcat8 + Maven3.5.2
2Maven Web项目创建
2.1新建maven项目
2.2 选择工作空间
2.3 选择创建web项目
2.4 填写项目相关参数
2.5 完成后的目录结构图
2.6 修改为maven约定目录
1、点击项目右键Properties -> Java Build Path ->Source选项
2、点击项目右键new->Source Folder
3、修改index.jsp的错误
在pom.xml添加servlet的支持
4、最终目录结构图
2.7 设置 Properties -> Project Facets
选中3.0 可能会出错
解决方法： 修改该项目路径下的 .settings/ org.eclipse.wst.common.project.facet.core.xml 文件
关闭项目再重新打开
3SSM整合
3.1Spring和Mybatis的整合
3.1.1Maven引入需要的Jar包
1、本教程使用部分jar的版本： Spring: 5.0.2.RELEASE Spring MVC: 5.0.2.RELEASE MyBatis: 3.4.5 mybatis-spring: 1.3.0 mysql-connector-java: 5.1.2 javax.servlet-api：3.1.0 commons-dbcp: 1.4 commons-io: 2.5 commons-codec: 1.10 2、pom.xml <properties> <!-- spring版本号 --> <spring.version>5.0.2.RELEASE</spring.version> <!-- mybatis版本号 --> <mybatis.version>3.4.5</mybatis.version> <!-- log4j日志文件管理包版本 --> <slf4j.version>1.7.7</slf4j.version> <log4j.version>1.2.17</log4j.version> <dependencies> <dependency> <groupId>junit</groupId> </properties> <artifactId>junit</artifactId> <version>4.12</version> <!-- 表示开发的时候引入，发布的时候不会加载此包 --> <scope>test</scope> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>3.1.0</version> </dependency> <!-- spring核心包 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-oxm</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-tx</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-aop</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context-support</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> <version>${spring.version}</version> </dependency> <!-- mybatis核心包 --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>${mybatis.version}</version> </dependency> <!-- mybatis/spring包 --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>1.3.0</version> </dependency> <!-- 导入java ee jar 包 --> <dependency> <groupId>javax</groupId> <artifactId>javaee-api</artifactId> <version>7.0</version> </dependency> <!-- 导入Mysql数据库链接jar包 --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.2</version> </dependency> <!-- 导入dbcp的jar包，用来在applicationContext.xml中配置数据库 --> <dependency> <groupId>commons-dbcp</groupId> <artifactId>commons-dbcp</artifactId> <version>1.4</version> </dependency> <!-- JSTL标签类 --> <dependency> <groupId>jstl</groupId> <artifactId>jstl</artifactId> <version>1.2</version> </dependency> <!-- 日志文件管理包 --> <!-- log start --> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>${log4j.version}</version> </dependency> <!-- 格式化对象，方便输出日志 --> <dependency> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>1.2.17</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-api</artifactId> <version>${slf4j.version}</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-log4j12</artifactId> <version>${slf4j.version}</version> </dependency> <!-- log end --> <!-- 映入JSON --> <dependency> <groupId>org.codehaus.jackson</groupId> <artifactId>jackson-mapper-asl</artifactId> <version>1.9.13</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-core</artifactId> <version>2.9.2</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>2.9.2</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-annotations</artifactId> <version>2.9.2</version> </dependency> <!-- 上传组件包 --> <dependency> <groupId>commons-fileupload</groupId> <artifactId>commons-fileupload</artifactId> <version>1.3.1</version> </dependency> <dependency> <groupId>commons-io</groupId> <artifactId>commons-io</artifactId> <version>2.5</version> </dependency> <dependency> <groupId>commons-codec</groupId> <artifactId>commons-codec</artifactId> <version>1.10</version> </dependency> </dependencies>
3.1.2 建立JDBC属性文件（文件编码修改为utf-8）：
jdbc.driver_class=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql:///ssm
jdbc.username=root
jdbc.password=root
#定义初始连接数
initialSize=0
#定义最大连接数
maxActive=20
#定义最大空闲
maxIdle=20
#定义最小空闲
minIdle=1
#定义最长等待时间
maxWait=60000
3.1.3 建立spring-mybatis.xml配置文件
<?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:mybatis-spring="http://mybatis.org/schema/mybatis-spring" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xsi:schemaLocation=" http://mybatis.org/schema/mybatis-spring http://mybatis.org/schema/mybatis-spring-1.3.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.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd"> <!-- 支持注解 --> <context:annotation-config></context:annotation-config> <!--自动扫描 :通过注解过滤被扫描的类 --> <context:component-scan base-package="com.bw" use-default-filters="false"> <context:include-filter type="annotation" expression="org.springframework.stereotype.Repository"/> <context:include-filter type="annotation" expression="org.springframework.stereotype.Service"/> </context:component-scan> <!-- 引入配置文件 --> <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> <property name="location" value="classpath:jdbc.properties" /> </bean> <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close"> <property name="driverClassName" value="${jdbc.driver_class}" /> <property name="url" value="${jdbc.url}" /> <property name="username" value="${jdbc.username}" /> <property name="password" value="${jdbc.password}" /> <!-- 初始化连接大小 --> <property name="initialSize" value="${initialSize}"></property> <!-- 连接池最大数量 --> <property name="maxActive" value="${maxActive}"></property> <!-- 连接池最大空闲 --> <property name="maxIdle" value="${maxIdle}"></property> <!-- 连接池最小空闲 --> <property name="minIdle" value="${minIdle}"></property> <!-- 获取连接最大等待时间 --> <property name="maxWait" value="${maxWait}"></property> </bean> <!-- spring和MyBatis完美整合，不需要mybatis的配置映射文件 --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource" /> <!-- 自动扫描mapping.xml文件 --> <property name="mapperLocations" value="classpath*:com/bw/mapper/*.xml"></property> </bean> <!-- DAO接口所在包名，Spring会自动查找其下的类 --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="com.bw.mapper" /> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property> </bean> <!-- (事务管理)transaction manager, use JtaTransactionManager for global tx --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource" /> </bean> </beans>
3.1.4JUnit测试Mybatis
3.1.4.1创建测试用表
DROP TABLE IF EXISTS `user`;
CREATE TABLE `user` (
`id` INT(11) NOT NULL AUTO_INCREMENT,
`username` VARCHAR(40) NOT NULL,
`password` VARCHAR(255) NOT NULL,
`age` INT(4) NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=INNODB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8;
/*Data for the table `user` */
INSERT INTO `user`(`id`,`username`,`password`,`age`) VALUES (1,'test1','pwd1',21);
INSERT INTO `user`(`id`,`username`,`password`,`age`) VALUES (2,'test2','pwd2',22);
INSERT INTO `user`(`id`,`username`,`password`,`age`) VALUES (3,'测试3','pwd2',23);
3.1.4.2利用MyBatis Generator自动创建代码
这个可根据表自动创建实体类、MyBatis映射文件以及mapper接口；完成后将文件复制到工程中。如图：
3.1.4.3 创建Service接口和实现类
1、service接口
2、service的实现类
3.1.4.4创建测试类TestMyBatis
测试类在src/test/java中建立TestMyBatis。
如果测试成功，表示Spring和Mybatis已经整合成功了。
至此，完成Spring和mybatis这两大框架的整合，下面在继续进行SpringMVC的整合。
3.2整合SpringMVC
3.2.1配置web.xml文件
这里面对spring-mybatis.xml的引入以及配置了spring-mvc的Servlet核心控制器就是为了完成SSM整合。
<?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" version="3.0"> <display-name>Archetype Created Web Application</display-name> <!-- Spring和mybatis的配置文件的路径 --> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:spring-mybatis.xml</param-value> </context-param> <!-- 编码过滤器 --> <filter> <filter-name>encodingFilter</filter-name> <filter-class>
org.springframework.web.filter.CharacterEncodingFilter</filter-class> <async-supported>true</async-supported> <init-param> <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> <!-- Spring监听器 --> <listener> <listener-class>
org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <!-- 防止Spring内存溢出监听器 --> <listener> <listener-class>
org.springframework.web.util.IntrospectorCleanupListener</listener-class> </listener> <!-- Spring MVC servlet核心控制器 --> <servlet> <servlet-name>SpringMVC</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:spring-mvc.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> <async-supported>true</async-supported> </servlet> <servlet-mapping> <servlet-name>SpringMVC</servlet-name> <!-- 此处可以可以配置成*.do，对应struts的后缀习惯 --> <url-pattern>/</url-pattern> </servlet-mapping> <welcome-file-list> <welcome-file>/index.jsp</welcome-file> </welcome-file-list> </web-app>
3.2.2配置spring_mvc.xml文件
配置里面的注释也很详细，在此就不说了；主要是自动扫描控制器，视图模式，注解的启动这三个。
**注意：**配置文件中的一行：
class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter"
我的项目里是jackson2.X版本的，如果你用的是jackson1.X版本的，不用写"2"。
<?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:mybatis-spring="http://mybatis.org/schema/mybatis-spring" xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xsi:schemaLocation=" http://mybatis.org/schema/mybatis-spring http://mybatis.org/schema/mybatis-spring-1.3.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.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd"> <!-- 支持注解 --> <context:annotation-config></context:annotation-config> <!-- 自动扫描该包，使SpringMVC认为包下用了@controller注解的类是控制器 (通过注解过滤被扫描的类) --> <context:component-scan base-package="com.bw"></context:component-scan> <!-- 解决Spring MVC @ResponseBody返回中文字符串乱码问题 --> <bean class="org.springframework.web.servlet.
mvc.method.annotation.RequestMappingHandlerAdapter"> <property name="messageConverters"> <list> <bean class="org.springframework.http.converter.
StringHttpMessageConverter"> <property name="supportedMediaTypes"> <list> <value>text/plain;charset=utf-8</value> <value>text/html;charset=UTF-8</value> </list> </property> </bean> </list> </property> </bean> <mvc:annotation-driven /> <!--避免IE执行AJAX时，返回JSON出现下载文件；注意：MappingJackson2 --> <bean id="mappingJacksonHttpMessageConverter" class="org.springframework.http.converter.json.
MappingJackson2HttpMessageConverter"> <property name="supportedMediaTypes"> <list> <value>text/html;charset=UTF-8</value> <value>text/plain;charset=utf-8</value> </list> </property> </bean> <!-- 启动SpringMVC的注解功能，完成请求和注解POJO的映射 --> <bean class="org.springframework.web.servlet.
mvc.annotation.AnnotationMethodHandlerAdapter"> <property name="messageConverters"> <list> <ref bean="mappingJacksonHttpMessageConverter" /> <!-- JSON转换器 --> </list> </property> </bean> <!-- 定义跳转的文件的前后缀 ，视图模式配置 --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <!-- 这里的配置我的理解是自动给后面action的方法return的字符串加上前缀和后缀
，变成一个 可用的url地址 --> <property name="prefix" value="/WEB-INF/jsp/" /> <property name="suffix" value=".jsp" /> </bean> <!-- 配置文件上传，如果没有使用文件上传可以不用配置，当然如果不配，
那么配置文件中也不必引入上传组件包 --> <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"> <!-- 默认编码 --> <property name="defaultEncoding" value="utf-8" /> <!-- 文件大小最大值 --> <property name="maxUploadSize" value="10485760000" /> <!-- 内存中的最大值 --> <property name="maxInMemorySize" value="40960" /> </bean> </beans>
3.2.3Junit测试SpringMVC
3.2.3.1创建UserController类
3.2.3.2创建测试类TestController
1、编写测试类
@RunWith(SpringJUnit4ClassRunner.class) @ContextConfiguration(locations = {
"classpath:spring-mybatis.xml", "classpath:spring-mvc.xml" }) @WebAppConfiguration public class TestController { private MockMvc mockMvc; @Autowired protected WebApplicationContext wac; @Before() // 这个方法在每个方法执行之前都会执行一遍 public void setup() { mockMvc = MockMvcBuilders.webAppContextSetup(wac).build(); // 初始化MockMvc对象 } @Test public void getAllCategoryTest() throws Exception { String responseString = mockMvc.perform(get("/user/showUser") // 请求的url,请求的方法是get // get("/user/showUser2") //请求的url,请求的方法是get .contentType(MediaType.APPLICATION_FORM_URLENCODED)// 数据的格式 .param("id", "1") // 添加参数(可以添加多个) // .param("id","3") //添加参数(可以添加多个) ).andExpect(status().isOk()) // 返回的状态是200 .andDo(print()) // 打印出请求和相应的内容 .andReturn().getResponse().getContentAsString(); // 将相应的数据转换为字符串 System.out.println("-----返回的json = " + responseString); } }
2、控制台打印结果：
4Tomcat启动Maven项目
1、点击项目右键，Properties->Project Facets
2、
