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SSM整合

程序员文章站 2024-03-24 17:37:10
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记录一下整合的过程:

一、整合

4个配置文件。jdbc.properties、applicationContext.xml、spring-mvc.xml、web.xml

首先是jdbc.properties。

jdbc.driver=com.microsoft.sqlserver.jdbc.SQLServerDriver
jdbc.url=jdbc\:sqlserver\://127.0.0.1\:1433;databaseName\=blog
jdbc.username=sa
jdbc.password=123

然后applicationContext.xml,这是一个spring的配置文件,主要负责配置数据源,事务管理,以及对Spring Mybatis进行整合。

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:tx="http://www.springframework.org/schema/tx" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:context="http://www.springframework.org/schema/context"
	xsi:schemaLocation="
	http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-tx.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">
	
	<!-- 加载属性文件 -->
	<context:property-placeholder location="classpath:jdbc.properties" />
	
	<!-- 配置数据库连接池 -->
	<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
		<property name="driverClass" value="${jdbc.driver}" />
		<property name="jdbcUrl" value="${jdbc.url}" />
		<property name="user" value="${jdbc.username}" />
		<property name="password" value="${jdbc.password}" />
	</bean>

	<!-- 配置事务管理器 -->
	<bean id="txManager"
		class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
		<property name="dataSource" ref="dataSource"></property>
	</bean>
	<!-- 开启事务注解 -->
	<tx:annotation-driven transaction-manager="txManager"/>
	
	<!-- 扫描生成bean 服务类-->
	<context:component-scan base-package="com.mao.service"></context:component-scan>
	
	
	<!-- mybatis-spring整合 start -->
	<!-- 配置SqlSessionFactoryBean -->
	<bean id="sqlSessionFactoryBean" class="org.mybatis.spring.SqlSessionFactoryBean">
		<property name="dataSource" ref="dataSource"></property>
		<!-- 别名包扫描   com.mao.entity这个包下面的实体可以使用别名-->
		<property name="typeAliasesPackage" value="com.mao.entity"></property>
	</bean>
	<!-- 映射文件扫描配置 -->
	<bean id="mapperScannerConfigurer" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
		<!-- 扫描哪个包 -->
		<property name="basePackage" value="com.mao.dao"></property>
	</bean>
	<!-- mybatis-spring整合 end -->
	
</beans>

spring-mvc.xml  这是SpringMVC的配置文件

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:context="http://www.springframework.org/schema/context"
	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/mvc
        http://www.springframework.org/schema/mvc/spring-mvc.xsd">
	<!-- 使用注解驱动 -->
	<mvc:annotation-driven />
	
    <!-- 扫描哪个包,扫描到@Controller注解的类就知道它是一个控制器,同时将其纳入spring ioc容器便于管理  -->
	<context:component-scan base-package="com.mao.controler"></context:component-scan>

	<!-- 视图解析器 -->
	<bean id="viewResolver"
		class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<property name="prefix" value="/WEB-INF/jsp/"/>
		<property name="suffix" value=".jsp"/>
	</bean>
</beans>

最后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_3_0.xsd"
	id="WebApp_ID" version="3.0">
	<display-name>MyBlog</display-name>

	<!-- 配置ContextLoaderListener用以初始化spring ioc容器 -->
	<listener>
		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
	</listener>

	<!-- 配置Spring IOC配置文件的路径 这样Spring就能找到applicationContext.xml配置文件并去加载他们 -->
	<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>classpath:applicationContext.xml</param-value>
	</context-param>

	<!-- 启动spring MVC 所有的请求都是先经过这个核心控制器 -->
	<servlet>
		<servlet-name>DispatcherServlet</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
		<!-- 默认会加载一个配置文件 修改配置的路径让其加载spring-mvc.xml -->
		<init-param>
			<param-name>contextConfigLocation</param-name>
			<param-value>classpath:spring-mvc.xml</param-value>
		</init-param>
	</servlet>
	<servlet-mapping>
		<!-- 让这个控制器拦截所有.do结尾的请求 -->
		<servlet-name>DispatcherServlet</servlet-name>
		<url-pattern>*.do</url-pattern>
	</servlet-mapping>

</web-app>

这样ssm就已经整合完成了。

二、测试

编写代码前先看下整体的结构。

SSM整合

首先是映射文件:一个接口(BlogMapper.java)和对应的XML文件(BlogMapper.xml)需要注意名称应该相同。

public interface BlogMapper {
    public void save(Blog blog);
}

BlogMapper.xml文件

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
  PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
  "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.mao.dao.BlogMapper">
	<insert id="save" parameterType="blog">
	 insert into blog(title,author,addtime,content) 
	 values(#{title},#{author},#{addtime},#{content})
	</insert>
</mapper>

实体类

@Alias("blog")
public class Blog implements Serializable{
    private String title;
    private String author;
    private Date addtime;
    private String content;
	//get、set省略
}

服务接口的实现类

@Service
public class BlogServiceImpl implements BlogService{
	//注入BlogMapper
	@Autowired
	BlogMapper blogMapper;
	
	@Transactional//事务
	@Override
	public void save(Blog blog) {
		blogMapper.save(blog);
	}

}

控制器BlogController.java

@Controller
@RequestMapping("/blog")
public class BlogController {
	//注入服务类
	@Autowired
	BlogService blogService;
	
	@RequestMapping("/save.do")
	public String save(){
		Blog blog=new Blog();
		blog.setTitle("Android");
		blog.setAuthor("张三");
		blog.setAddtime(new Date());
		blog.setContent("你好");
		blogService.save(blog);
		return "success";
	}
}

这样就可以访问http://localhost:8080/MyBlog/blog/save.do  保存数据后成功跳转到/WEB-INF/jsp/success.jsp

最后jar包。

SSM整合