mybatis学习（十一）——springmvc++spring+mybatis整合

做任何一个项目都以一个需求，这里先定义一下需求：利用三大框架查询酒店列表。

一、搭建开发环境

1、创建一个web项目

我这里用的是 jdk1.8+tomact7.0

2、创建hotel表

CREATE TABLE `hotel` (`id` int(11) NOT NULL,`hotel_name` varchar(20) NOT NULL,`hotel_address` varchar(20) DEFAULT NULL,`city_code` int(3) DEFAULT NULL,`price` int(11) NOT NULL,`creat_time` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,`update_time` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,PRIMARY KEY (`id`),
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

添加一些数据

3、添加Springmvc+Spring+mybatis+sql的jar包，新建一个lib目录

二、编写配置文件

主要有以下配置文件web.xml，Springmvc的配置文件，mybatis的配置文件,数据源配置文件

这里没使用maven，不然还有pom.xml文件

1、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"version="3.0"><!-- 加载spring容器 --><context-param><param-name>contextConfigLocation</param-name><param-value>/WEB-INF/classes/config/root-context.xml</param-value></context-param><listener><listener-class>org.springframework.web.context.ContextLoaderListener</listener-class></listener><!-- spring mvc --><servlet><!--前端控制器配置 --><servlet-name>ssm</servlet-name><servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class><init-param><param-name>contextConfigLocation</param-name><!-- springmvc配置文件地址 --><param-value>classpath:config/springmvc-context.xml</param-value></init-param><!-- 启动优先级配置 --><load-on-startup>1</load-on-startup><async-supported>true</async-supported></servlet><servlet-mapping><servlet-name>ssm</servlet-name><url-pattern>/</url-pattern></servlet-mapping>
</web-app>

2、springmvc-context.xml配置

<?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:mvc="http://www.springframework.org/schema/mvc" xmlns:task="http://www.springframework.org/schema/task"xmlns:jee="http://www.springframework.org/schema/jee" 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.xsdhttp://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsdhttp://www.springframework.org/schema/mvc  http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsdhttp://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-4.3.xsdhttp://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsdhttp://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-4.3.xsd"><!--扫描controller组件 --><context:component-scan base-package="com.pjf.ssm.controller" /><!-- 视图解析器配置 --><beanclass="org.springframework.web.servlet.view.InternalResourceViewResolver" /><!-- 控制器映射器控制器适配器配置 --><mvc:annotation-driven></mvc:annotation-driven>
</beans>

3、mybatis-context.xml

因为是和spring的结合，这里大部分的配置都省略了，在Spring配置文件中配置。

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configurationPUBLIC "-//mybatis.org//DTD Config 3.0//EN""http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration><!-- 配置mapper 使用spring和mybatis的整合包进行扫描，这里不需要配置 必须遵循mapper.xml文件和mapper.java同名 --><!-- 全局的setting配置 比如二级缓存的时候这里就需要配置 --><!-- 别名的配置 --><typeAliases><package name="com.tuniu.ssm.po" /></typeAliases></configuration>

4、db.properties配置

在Spring配置文件之前，必须先要配置数据源

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/spring_mybatis
jdbc.name=root
jdbc.password=pjf520

5、spring配置文件 root-context.xml

<?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:mvc="http://www.springframework.org/schema/mvc" xmlns:task="http://www.springframework.org/schema/task"xmlns:tx="http://www.springframework.org/schema/tx" xmlns:jee="http://www.springframework.org/schema/jee"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.xsdhttp://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsdhttp://www.springframework.org/schema/mvc  http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsdhttp://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-4.3.xsdhttp://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsdhttp://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsdhttp://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-4.3.xsd"><!-- 配置组件扫描器 --><context:component-scan base-package="com.pjf.ssm.service"></context:component-scan><context:property-placeholder location="classpath:db.properties" /><!-- 配置数据源 dbcp --><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="${jdbc.name}" /><property name="password" value="${jdbc.password}" /><property name="maxActive" value="30" /><property name="maxIdle" value="5" /></bean><!-- 配置sqlSessionFactory dataSource  数据源配置configLocation  mybatis配置文件地址--><bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"><property name="dataSource" ref="dataSource"></property><property name="configLocation" value="classpath:config/mybatis-context.xml"></property></bean><!-- 配置mapper扫描器   basePackage  mapper接口和mapper.xml文件的类全名sqlSessionFactoryBeanName  sqlsession工厂--><bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"><!-- s扫描包的路径，如果有多个，中间用逗号隔开 --><property name="basePackage" value="com.pjf.ssm.dao"></property><property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property></bean><!-- 事物管理器 对mybatis操作数据库的事物控制，spring使用jdbc的事物控制 --><bean id="transactionManager"class="org.springframework.jdbc.datasource.DataSourceTransactionManager"><!-- 数据源的配置 dataSource在orm-context.xml中配置了 --><property name="dataSource" ref="dataSource"></property></bean><!-- 配置通知 --><tx:advice id="txAdvice" transaction-manager="transactionManager"><tx:attributes><tx:method name="query*" propagation="REQUIRED" /><tx:method name="add" propagation="REQUIRED" /><tx:method name="update" propagation="REQUIRED" /><tx:method name="insert*" propagation="REQUIRED" /><tx:method name="delete*" propagation="REQUIRED" /><tx:method name="find*" propagation="SUPPORTS" read-only="true" /><tx:method name="get*" propagation="SUPPORTS" read-only="true" /><tx:method name="set*" propagation="SUPPORTS" read-only="true" /></tx:attributes></tx:advice><!-- 配置aop --><aop:config><aop:advisor advice-ref="txAdvice"pointcut="execution(* com.pjf.ssm.service.impl.*.*(..))" /></aop:config></beans>

三、编写代码

1、hotel.java

package com.pjf.ssm.po;public class Hotel {private int hotelId;private String hotelName;private String hotelAddress;private int price;public int getHotelId() {return hotelId;}public void setHotelId(int hotelId) {this.hotelId = hotelId;}public String getHotelName() {return hotelName;}public void setHotelName(String hotelName) {this.hotelName = hotelName;}public String getHotelAddress() {return hotelAddress;}public void setHotelAddress(String hotelAddress) {this.hotelAddress = hotelAddress;}public int getPrice() {return price;}public void setPrice(int price) {this.price = price;}}

2、hotel.service接口和实现类

通过@Service("hotelService")在Spring工厂中注册，就不需要编写xml文件配置了

通过@Autowired注入hotelMapper类

package com.pjf.ssm.service;import java.util.List;import com.pjf.ssm.po.Hotel;public interface HotelService {public List<Hotel> queryHotelList();}

package com.pjf.ssm.service.impl;import java.util.List;import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;import com.pjf.ssm.dao.HotelMapper;
import com.pjf.ssm.po.Hotel;
import com.pjf.ssm.service.HotelService;//注册组件
@Service("hotelService")
public class HotelServiceImpl implements HotelService {// 自动注入
    @Autowiredprivate HotelMapper hotelMapper;public List<Hotel> queryHotelList() {return hotelMapper.queryHotelList();}
}

3、hotelMapper接口和hotelMapper.xml文件

写了个简单的查询语句，这两个文件必须保吃同名，且在同一个目录下。

package com.pjf.ssm.dao;import java.util.List;import com.pjf.ssm.po.Hotel;public interface HotelMapper {public List<Hotel> queryHotelList();}

<?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.pjf.ssm.dao.HotelMapper"><resultMap id="HotelMap" type="com.pjf.ssm.po.Hotel"><id column="id" property="hotelId" jdbcType="INTEGER" /><result column="hotel_name" property="hotelName" jdbcType="VARCHAR" /><result column="hotel_address" property="hotelAddress" jdbcType="VARCHAR" /><result column="price" property="price" jdbcType="INTEGER" /></resultMap><select id="queryHotelList" resultMap="HotelMap">select id,hotel_name,hotel_address,price from hotel</select>    </mapper>

4、QueryHotelController .java

package com.pjf.ssm.controller;import java.util.ArrayList;
import java.util.List;import com.pjf.ssm.po.Hotel;
import com.pjf.ssm.service.HotelService;import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;
//使用Controller这个注解来标识这是一个控制器
@Controller
public class QueryHotelController {@Autowiredprivate HotelService hotelService;//酒店列表查询//@RequestMapping实现queryHotelList方法和url进行映射//建议将url和方法名一样，一个方法对应一个url@RequestMapping(value = "/queryHotelList", method = RequestMethod.GET)public ModelAndView queryHotelList()throws Exception{List<Hotel> hotelList = hotelService.queryHotelList();            ModelAndView modelAndView = new ModelAndView();modelAndView.addObject("hotelList",hotelList);modelAndView.setViewName("/WEB-INF/jsp/hotel/hotelList.jsp");return modelAndView;}
}

5、jsp文件编写

主要是前端的展示，不熟悉html的可以网上copy一份修改下就行了

<%@ page language="java" contentType="text/html; charset=UTF-8"pageEncoding="UTF-8"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>酒店列表</title>
</head>
<body>
<form action="${pageContext.request.contextPath }/queryHotelDetail.action" method="get">酒店列表：
<table border=1>
<tr><td>酒店id</td><td width=100>酒店名</td><td>酒店地址</td><td>起价</td><td ></td>
</tr>
<c:forEach items="${hotelList}" var="hotel">
<tr><td>${hotel.hotelId }</td><td>${hotel.hotelName }</td><td>${hotel.hotelAddress }</td><td>${hotel.price }</td><td ><input type="submit" value="查看详情"></td>
</tr>
</c:forEach>
</table>
</form></body>
</html>

四、在tomact中测试

在tomact中添加工程ssm，然后右键点击tomact，点击debug运行，debug模式下修改文件，不需要重启tomact就可以生效

然后在前端输入地址

http://localhost:8081/ssm/queryHotelList

这里之所以是8081端口，是因为我本地之前装了tomact8.0，避免冲突所以修改了默认的8080端口，大家测试可以使用8080.

结果：

转载于:https://www.cnblogs.com/pjfmeng/p/7753824.html