搭建一个SSM框架

刚好学完springMVC，mybatis简单的组合，总结一下

1.创建一个maven项目，引入jar包

一共这么多，除了oracle jar包是我手动添加到lib里，其他都是通过pom.xml引入的

<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.qyxy</groupId>
    <artifactId>ssm_02</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>ssm_02</name>
    <url>http://maven.apache.org</url>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>3.8.1</version>
            <scope>test</scope>
        </dependency>
        <!-- spring -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
            <version>4.3.5.RELEASE</version>
        </dependency>
        <!-- spring jdbc -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>4.3.5.RELEASE</version>
        </dependency>
        <!-- spring aop -->
        <!-- spring面向切面编程相关的jar包 -->
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjrt</artifactId>
            <version>1.8.10</version>
        </dependency>
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.8.10</version>
        </dependency>
        <!-- spring mvc -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>4.3.5.RELEASE</version>
        </dependency>
        <!-- springmvc 返回json数据格式需要的jar包 -->
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>2.8.8</version>
        </dependency>
        <!-- fastjson -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.31</version>
        </dependency>
        <!-- mybatis -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.4.4</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>1.3.0</version>
        </dependency>
        <!-- io -->
        <!-- 文件上传需要的jar -->
        <dependency>
            <groupId>commons-fileupload</groupId>
            <artifactId>commons-fileupload</artifactId>
            <version>1.3.1</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>2.8.8</version>
        </dependency>
        <!-- jstl表达式相关的jar包 -->
        <dependency>
            <groupId>jstl</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>
        <!-- log4j依賴 -->
        <dependency>
            <groupId>org.apache.logging.log4j</groupId>
            <artifactId>log4j-core</artifactId>
            <version>2.6.2</version>
        </dependency>
    </dependencies>

</project>

2.配置web.xml文件

<?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>ssm_02</display-name>
  <welcome-file-list>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.htm</welcome-file>
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>default.html</welcome-file>
    <welcome-file>default.htm</welcome-file>
    <welcome-file>default.jsp</welcome-file>
  </welcome-file-list>
  <!-- 应用启动加载spring配置文件 指定配置文件位置 -->
	<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>classpath:beans.xml</param-value>
	</context-param>
	<!-- 配置spring的监听器 -->
	<listener>
		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
	</listener>

	<!-- 针对post请求，防止取数据乱码 -->
	<filter>
		<filter-name>characterEncoding</filter-name>
		<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
		<init-param>
			<param-name>encoding</param-name>
			<param-value>utf-8</param-value>
		</init-param>
	</filter>
	<filter-mapping>
		<filter-name>characterEncoding</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>

	<!-- springmvc 的核心分发器DispatcherServlet -->
	<servlet>
		<servlet-name>springmvc</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
		<!-- 初始化 DispatcherServlet 的时候，同时也会初始化spring容器，默认配置文件路径为/WEB-INF/<servlet-name>-servlet.xml。 -->
		<init-param>
			<param-name>contextConfigLocation</param-name>
			<param-value>classpath:springmvc-servlet.xml</param-value>
		</init-param>
		<load-on-startup>1</load-on-startup>
	</servlet>
	<servlet-mapping>
		<servlet-name>springmvc</servlet-name>
		<!-- “/” 为tomcat默认的请求处理器，所有请求都交给该servlet来处理。 默认为tomcat/conf/web.xml中配置的org.apache.catalina.servlets.DefaultServlet -->
		<url-pattern>/</url-pattern>
	</servlet-mapping>
</web-app>

3.数据库连接文件db.properties（图中的配置文件，都放在resourece文件夹里）

jdbc.driverClassName=oracle.jdbc.driver.OracleDriver//根据自己数据库配置，这里我都是用的oracle数据库
jdbc.url=jdbc:oracle:thin:@localhost:1521:MLDN
jdbc.username=scott
jdbc.password=tiger

4.配置springmvc的配置文件

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:context="http://www.springframework.org/schema/context"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:util="http://www.springframework.org/schema/util"
    xmlns:mvc="http://www.springframework.org/schema/mvc"
    xsi:schemaLocation="
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context.xsd
    http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans.xsd
    http://www.springframework.org/schema/util
    http://www.springframework.org/schema/util/spring-util.xsd
    http://www.springframework.org/schema/mvc
    http://www.springframework.org/schema/mvc/spring-mvc.xsd
    ">
    <!-- 支持注解 -->
    <mvc:annotation-driven></mvc:annotation-driven>
    <!-- 定义注解要扫描的包 -->
    <context:component-scan base-package="com.qyxy.controller"></context:component-scan>
    <!-- 对静态资源进行处理 -->
    <mvc:default-servlet-handler/>
     <!-- 配置视图解析器 -->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/"/>
        <property name="suffix" value=".jsp"/>
    </bean>
   	<bean id="multipartResolver"
		class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
		<!-- 设置上传文件的最大尺寸为1MB -->
		<property name="maxUploadSize">
			<value>1048576</value>
		</property>
	</bean>

</beans>

5.配置mybatis配置文件

<?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>

	<!-- properties属性配置文件的引入 -->

	<!-- setting设置，调整mybaits运行行为 -->
	<settings>
	  <!-- 匹配下划线到驼峰式命名法 -->
	  <setting name="mapUnderscoreToCamelCase" value="true"/>
	  <setting name="safeRowBoundsEnabled" value="false"/>
	  <setting name="cacheEnabled" value="true"/>
	  <setting name="lazyLoadingEnabled" value="true"/>
	  <setting name="multipleResultSetsEnabled" value="true"/>
	  <setting name="useColumnLabel" value="true"/>
	  <setting name="useGeneratedKeys" value="false"/>
	  <setting name="autoMappingBehavior" value="PARTIAL"/>
	  <setting name="autoMappingUnknownColumnBehavior" value="WARNING"/>
	  <setting name="defaultExecutorType" value="SIMPLE"/>
	  <setting name="defaultStatementTimeout" value="25"/>
	  <setting name="defaultFetchSize" value="100"/>
	  <setting name="localCacheScope" value="SESSION"/>
	  <setting name="jdbcTypeForNull" value="OTHER"/>
	  <setting name="lazyLoadTriggerMethods" value="equals,clone,hashCode,toString"/>
	</settings>
	<!-- 类起别名 -->
	<typeAliases>
		<package name="com.qyxy.entity"/>
	</typeAliases>
</configuration>

6.配置spring的配置文件

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:context="http://www.springframework.org/schema/context"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:aop="http://www.springframework.org/schema/aop"
    xmlns:util="http://www.springframework.org/schema/util"
    xmlns:tx="http://www.springframework.org/schema/tx"
    xsi:schemaLocation="
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context.xsd
    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.xsd
    http://www.springframework.org/schema/util
    http://www.springframework.org/schema/util/spring-util.xsd
    http://www.springframework.org/schema/tx
    http://www.springframework.org/schema/tx/spring-tx.xsd
    "> 

	<!-- 1.读取jdbc.properties配置文件 -->
	<bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
    	<property name="locations" value="classpath:jdbc.properties"/>
	</bean>

	<!-- 2.配置jdbc的dataSource  -->
	<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
	 	<property name="driverClassName" value="${jdbc.driverClassName}"/>
		<property name="url" value="${jdbc.url}"></property>
		<property name="username" value="${jdbc.username}"></property>
		<property name="password" value="${jdbc.password}"></property>
	</bean>

	<!-- 3.配置mybatis的sqlSessionFactory -->
	 <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <!-- 引入mybatis配置文件 -->
        <property name="configLocation" value="classpath:mybatis-config.xml"></property>
    </bean>

    <!-- 4.配置mybatis自动扫描sql映射文件/接口 -->
	<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
		<property name="basePackage" value="com.qyxy.mapper"></property>
	</bean>

    <!-- 5.定义事务所在的bean -->
	<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
    	<property name="dataSource" ref="dataSource"></property>
    </bean> 

    <!-- 6.支持注解驱动的事务管理，指定事务管理器 -->
	<tx:annotation-driven transaction-manager="transactionManager" />

    <!-- 7. aspectj支持自动代理实现AOP功能 -->
    <aop:aspectj-autoproxy proxy-target-class="true"></aop:aspectj-autoproxy>

	<!-- 8.定义事务的切面和切入点信息 -->
    <!-- 定义事务的属性 -->
     <tx:advice id="txAdvice" transaction-manager="transactionManager">
    	<tx:attributes>
    		<tx:method name="find*" read-only="true"/>
    		<tx:method name="list*" read-only="true"/>
    		<tx:method name="get*" read-only="true"/>
    		<tx:method name="select*" read-only="true"/>
    		<tx:method name="*" propagation="REQUIRED" read-only="false"/>
    	</tx:attributes>
    </tx:advice>
    <!-- 定义事务所使用的切入点 -->
   <aop:config>
   		<aop:pointcut expression="execution(* com.qyxy.service.impl.*.*(..))" id="pointcut"/>
   		<aop:advisor advice-ref="txAdvice" pointcut-ref="pointcut"/>
   </aop:config>
   <!-- 定义spring扫描的包 -->
   <context:component-scan base-package="com.qyxy.service.impl"></context:component-scan>
   <context:component-scan base-package="com.qyxy.mapper"></context:component-scan>

</beans>

7.写实体类（可以用mybatis-generator生成）

Dept类

public class Dept {
	private int deptno;
	private String dname;
	private String loc;
	private List<Emp> emps;

	public List<Emp> getEmps() {
		return emps;
	}
	public void setEmps(List<Emp> emps) {
		this.emps = emps;
	}
	public int getDeptno() {
		return deptno;
	}
	public void setDeptno(int deptno) {
		this.deptno = deptno;
	}
	public String getDname() {
		return dname;
	}
	public void setDname(String dname) {
		this.dname = dname;
	}
	public String getLoc() {
		return loc;
	}
	public void setLoc(String loc) {
		this.loc = loc;
	}

}

8.mapper接口

public interface DeptMapper {
	public List<Dept> findAll();
}

9.service接口和实现类

public interface DeptService {
	public List<Dept> findAll();
}

实现类

@Service
public class DeptServiceImpl implements DeptService{
	@Autowired
	private DeptMapper deptMapper;
	@Override
	public List<Dept> findAll() {
		return deptMapper.findAll();
	}
	public void setDeptMapper(DeptMapper deptMapper) {
		this.deptMapper = deptMapper;
	}
}

10.controllerceng层方法

@Controller
public class Hello {
	@Autowired
	private DeptService deptService;
	@RequestMapping("find")
	public String find(Model model){
		List<Dept> deptList=deptService.findAll();
		model.addAttribute("deptList", deptList);
		System.out.println("00000000000000000000");
		return "list";
	}
	public void setDeptService(DeptService deptService) {
		this.deptService = deptService;
	}
}

最后测试，博主已经测试过了，没有问题