mybatis學習（十一）——springmvc++spring+mybatis整合
阿新 • • 發佈：2017-10-30
transacti servlet 自動註入 為我 reac content attribute 定義 property
做任何一個項目都以一個需求，這裏先定義一下需求：利用三大框架查詢酒店列表。
一、搭建開發環境
1、創建一個web項目
我這裏用的是 jdk1.8+tomact7.0
2、創建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;
添加一些數據
3、添加Springmvc+Spring+mybatis+sql的jar包，新建一個lib目錄
二、編寫配置文件
主要有以下配置文件web.xml，Springmvc的配置文件，mybatis的配置文件,數據源配置文件
這裏沒使用maven，不然還有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"> <!-- 加載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> <!-- 啟動優先級配置 --> <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.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-4.3.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-4.3.xsd"> <!--掃描controller組件 --> <context:component-scan base-package="com.pjf.ssm.controller" /> <!-- 視圖解析器配置 --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" /> <!-- 控制器映射器控制器適配器配置 --> <mvc:annotation-driven></mvc:annotation-driven> </beans>
3、mybatis-context.xml
因為是和spring的結合，這裏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 configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd"> <configuration> <!-- 配置mapper 使用spring和mybatis的整合包進行掃描，這裏不需要配置 必須遵循mapper.xml文件和mapper.java同名 --> <!-- 全局的setting配置 比如二級緩存的時候這裏就需要配置 --> <!-- 別名的配置 --> <typeAliases> <package name="com.tuniu.ssm.po" /> </typeAliases> </configuration>
4、db.properties配置
在Spring配置文件之前，必須先要配置數據源
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.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-4.3.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-4.3.xsd"> <!-- 配置組件掃描器 --> <context:component-scan base-package="com.pjf.ssm.service"></context:component-scan> <context:property-placeholder location="classpath:db.properties" /> <!-- 配置數據源 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 數據源配置 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掃描器 basePackage mapper接口和mapper.xml文件的類全名 sqlSessionFactoryBeanName sqlsession工廠 --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <!-- s掃描包的路徑，如果有多個，中間用逗號隔開 --> <property name="basePackage" value="com.pjf.ssm.dao"></property> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property> </bean> <!-- 事物管理器 對mybatis操作數據庫的事物控制，spring使用jdbc的事物控制 --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <!-- 數據源的配置 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、編寫代碼
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接口和實現類
通過@Service("hotelService")在Spring工廠中註冊，就不需要編寫xml文件配置了
通過@Autowired註入hotelMapper類
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; //註冊組件 @Service("hotelService") public class HotelServiceImpl implements HotelService { // 自動註入 @Autowired private HotelMapper hotelMapper; public List<Hotel> queryHotelList() { return hotelMapper.queryHotelList(); } }
3、hotelMapper接口和hotelMapper.xml文件
寫了個簡單的查詢語句，這兩個文件必須保吃同名，且在同一個目錄下。
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這個註解來標識這是一個控制器 @Controller public class QueryHotelController { @Autowired private HotelService hotelService; //酒店列表查詢 //@RequestMapping實現queryHotelList方法和url進行映射 //建議將url和方法名一樣，一個方法對應一個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文件編寫
主要是前端的展示，不熟悉html的可以網上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="${pageContext.request.contextPath }/queryHotelDetail.action" method="get"> 酒店列表： <table border=1> <tr> <td>酒店id</td> <td width=100>酒店名</td> <td>酒店地址</td> <td>起價</td> <td ></td> </tr> <c:forEach items="${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="查看詳情"></td> </tr> </c:forEach> </table> </form> </body> </html>
四、在tomact中測試
在tomact中添加工程ssm，然後右鍵點擊tomact，點擊debug運行，debug模式下修改文件，不需要重啟tomact就可以生效
然後在前端輸入地址
http://localhost:8081/ssm/queryHotelList
這裏之所以是8081端口，是因為我本地之前裝了tomact8.0，避免沖突所以修改了默認的8080端口，大家測試可以使用8080.
結果：
mybatis學習（十一）——springmvc++spring+mybatis整合