SSM三大框架整合

Spring 整合SpringMVC + MyBatis

第一部分: 基本工程结构搭建(eclipse 创建一个 Dynamic Web project)

  1.  导入jar包

2、添加source folder ,命名为 resources

最后工程结构如下:

 

第二部分:整合步骤

Dao层:

  1. SqlMapConfig.xml(这个是Mybatis的配置文件),空文件即可。需要文件头。
  2. applicationContext-dao.xml。
    1. 数据库连接池
    2. SqlSessionFactory对象,需要spring和mybatis整合包下的。
    3. 配置mapper文件扫描器。

SqlMapConfig.xml

<?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>

</configuration>

applicationContext-dao.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:context="http://www.springframework.org/schema/context" 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:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
	http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
	http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
	http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.0.xsd">

   <!-- 加载配置文件 -->
   <context:property-placeholder location="classpath:jdbc.properties" />

	<!-- 数据库连接池 -->
	<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
		destroy-method="close">
		<property name="driverClassName" value="${jdbc.driver}" />
		<property name="url" value="${jdbc.url}" />
		<property name="username" value="${jdbc.username}" />
		<property name="password" value="${jdbc.password}" />
		<!-- 连接池的最大数据库连接数 -->
		<property name="maxActive" value="10" />
		<!-- 最大空闲数 -->
		<property name="maxIdle" value="5" />
	</bean>
	
	<!-- SqlSessionFactory配置 -->
	<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
		<property name="dataSource" ref="dataSource" />
		<!-- 加载mybatis核心配置文件 -->
		<property name="configLocation" value="classpath:SqlMapConfig.xml" />
		<!-- 别名包扫描 -->
		<property name="typeAliasesPackage" value="com.jk.pojo" />
	</bean>
	
    <!-- 配置mybatis的映射器: -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
    	<!-- basePackage多个包用","分隔 -->
    	<property name="basePackage" value="com.jk.mapper" />
    </bean>
</beans>

jdbc.propeties

# 数据库连接驱动
jdbc.driver=com.mysql.jdbc.Driver
# 数据库的url 
jdbc.url=jdbc:mysql://localhost:3306/ssm?characterEncoding=utf-8
# 数据库安装时 用户名
jdbc.username=root
# 数据库安装时 密码(若没有密码 就不写)
#jdbc.password=
jdbc.password=root

 

Service层:

  1. applicationContext-service.xml包扫描器,扫描@service注解的类。
  2. applicationContext-transaction.xml配置事务。

applicationContext-service.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:context="http://www.springframework.org/schema/context" 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:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
	http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
	http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
	http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.0.xsd">
	<!-- @Service包扫描器 -->
	<context:component-scan base-package="com.jk.service"/>
</beans>

applicationContext-transaction.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:context="http://www.springframework.org/schema/context" 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:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
	http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
	http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
	http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.0.xsd">

	<!-- 事务管理器 -->
	<bean id="transactionManager"
		class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
		<!-- 数据源 -->
		<property name="dataSource" ref="dataSource" />
	</bean>

	<!-- 通知 -->
	<tx:advice id="txAdvice" transaction-manager="transactionManager">
		<tx:attributes>
			<!-- 传播行为 -->
			<tx:method name="save*" propagation="REQUIRED" />
			<tx:method name="insert*" propagation="REQUIRED" />
			<tx:method name="delete*" propagation="REQUIRED" />
			<tx:method name="update*" propagation="REQUIRED" />
			<tx:method name="find*" propagation="SUPPORTS" read-only="true" />
			<tx:method name="get*" propagation="SUPPORTS" read-only="true" />
			<tx:method name="query*" propagation="SUPPORTS" read-only="true" />
		</tx:attributes>
	</tx:advice>

	<!-- 切面 
        execution(* com.jk.service.*.*(..))
        第一个 '*' :     表示返回值类型,
        第二个 '*' :      表示com.jk.service 包下的类
        第三个 '*' :     表示com.jk.service 包下的类型的所有方法
        ' (..) '  :     表示方法参数
        
    -->
	<aop:config>
		<aop:advisor advice-ref="txAdvice"
			pointcut="execution(* com.jk.service.*.*(..))" />
	</aop:config>

</beans>

 

Controller层:

spring-mvc.xml

  1. 包扫描器,扫描@Controller注解的类。
  2. 配置注解驱动。
  3. 视图解析器
<?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-4.0.xsd
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd">

	<!-- 配置@controller扫描包 -->
	<context:component-scan base-package="com.jk.controller" />
	
	
	<!-- 配置注解驱动,相当于同时使用最新处理器映射跟处理器适配器,对json数据响应提供支持 -->
	<mvc:annotation-driven />
	
	<!-- 配置视图解析器 -->
	<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <!-- 配置前缀 -->
		<property name="prefix" value="/WEB-INF/jsp/"/>

        <!-- 配置后缀缀 -->
		<property name="suffix" value=".jsp"/>
	</bean>
</beans>

Web.xml

  1. 配置spring容量监听器
  2. 配置前端控制器

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_2_5.xsd" id="WebApp_ID" version="2.5">
  <display-name>03-springmvc-mybatis</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>
  
  <!-- 配置spring -->
	<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>classpath:spring/applicationContext*.xml</param-value>
	</context-param>

	<!-- 使用监听器加载Spring配置文件 -->
	<listener>
		<listener-class>
            org.springframework.web.context.ContextLoaderListener
        </listener-class>
	</listener>
	
	<!-- 解决post乱码问题 -->
	<filter>
		<filter-name>encoding</filter-name>
		<filter-class>
            org.springframework.web.filter.CharacterEncodingFilter
        </filter-class>
		<!-- 设置编码参是UTF8 -->
		<init-param>
			<param-name>encoding</param-name>
			<param-value>UTF-8</param-value>
		</init-param>
	</filter>
	<filter-mapping>
		<filter-name>encoding</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>
	
	
	<!-- 前端控制器 -->
	<servlet>
		<servlet-name>springmvc-web</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>
	</servlet>

	<servlet-mapping>
		<servlet-name>springmvc-web</servlet-name>
		<url-pattern>*.action</url-pattern>
	</servlet-mapping>
  
</web-app>

 

第三部分:编码测试

创建数据库(设置字符集为UTF-8,命名为ssm)

建表语句如下

CREATE TABLE `emp` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `name` varchar(255) DEFAULT NULL,
  `password` varchar(255) DEFAULT NULL,
  `phone` varchar(255) DEFAULT NULL,
  `sex` varchar(255) DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8;


INSERT INTO `emp` VALUES ('1', '张三', '123456', '1008611', '男');

编写pojo

 
package com.jk.pojo;

import java.io.Serializable;

/**
 * 雇员信息
 * @author 风尘洛语
 *
 */
public class Emp implements Serializable{
	private static final long serialVersionUID = 1L;
	
	// 主键,自动递增
	private Integer id;
	
	// 雇员名
	private String name;
	
	// 雇员密码
	private String password;
	
	// 雇员电话
	private String phone;
	
	// 雇员性别
	private String sex;
	
	// GET AND SET
	public Integer getId() {
		return id;
	}
	public void setId(Integer id) {
		this.id = id;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getPassword() {
		return password;
	}
	public void setPassword(String password) {
		this.password = password;
	}
	public String getPhone() {
		return phone;
	}
	public void setPhone(String phone) {
		this.phone = phone;
	}
	public String getSex() {
		return sex;
	}
	public void setSex(String sex) {
		this.sex = sex;
	}
	@Override
	public String toString() {
		return "User [id=" + id + ", name=" + name + ", password=" + password + ", phone=" + phone + ", sex=" + sex
				+ "]";
	}
	
	
}

编写Mapper


package com.jk.mapper;

import com.jk.pojo.Emp;

/**
 * 用户持久化接口
 * @author 风尘洛语
 */
public interface EmpMapper {
	/**
	 * 根据id 查询雇员信息
	 * @param id 雇员ID
	 * @return 
	 */
	Emp findEmpById (Integer id);
}

编写xxxMapper.xml

<?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.jk.mapper.EmpMapper" >
	<select id="findEmpById" parameterType="int" resultType="com.jk.pojo.Emp">
		SELECT
			e.`id`,
			e.`name`,
			e.`password`,
			e.`sex`,
			e.`phone`
		FROM
			emp e
		WHERE
			e.`id` = #{id}
	</select>
</mapper>

编写Service

package com.jk.service;

import com.jk.pojo.Emp;

public interface EmpService {
	/**
	 * 根据id 查询雇员信息
	 * @param id 雇员ID
	 * @return 
	 */
	Emp findEmpById (Integer id);
}
package com.jk.service;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.jk.mapper.EmpMapper;
import com.jk.pojo.Emp;

/**
 * 服务层接口
 * @author 风尘洛语
 */
@Service("empService")
public class EmpServiceImpl {
	@Autowired
	EmpMapper empMapper;

	/**
	 * 根据id 查询雇员信息
	 * @param id 雇员ID
	 * @return 
	 */
	Emp findEmpById (Integer id) {
		return empMapper.findEmpById(id);
	}
}

编写Controller

package com.jk.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import com.jk.pojo.Emp;
import com.jk.service.EmpService;

/**
 * 表现层接口
 * @author 风尘洛语
 */
@Controller
public class EmpController {

	@Autowired
	EmpService empService;
	
	@RequestMapping("/emp/{id}")
	@ResponseBody
	public Emp queryEmpById (@PathVariable("id") Integer id) {
		
		return empService.findEmpById(id);
	}
}

更改web.xml 使其能支持RESTful 风格请求

<?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_2_5.xsd"
	id="WebApp_ID" version="2.5">
	<display-name>ssm-demo</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>


	<!-- 配置spring -->
	<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>classpath:spring/applicationContext*.xml</param-value>
	</context-param>

	<!-- 使用监听器加载Spring配置文件 -->
	<listener>
		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
	</listener>

	<!-- 解决post乱码问题 -->
	<filter>
		<filter-name>encoding</filter-name>
		<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
		<!-- 设置编码参是UTF8 -->
		<init-param>
			<param-name>encoding</param-name>
			<param-value>UTF-8</param-value>
		</init-param>
	</filter>
	<filter-mapping>
		<filter-name>encoding</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>


	<!-- 前端控制器 -->
	<servlet>
		<servlet-name>springmvc-web</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
		<init-param>
			<param-name>contextConfigLocation</param-name>
			<param-value>classpath:spring/springmvc.xml</param-value>
		</init-param>
	</servlet>

	<servlet-mapping>
		<servlet-name>springmvc-web</servlet-name>
		<url-pattern>/</url-pattern>
	</servlet-mapping>
</web-app>

 

测试

http://localhost:8080/ssm-demo/emp/1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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