springMvc+mybatis搭建项目

1、新建一个mvn项目

2、在pom.xml中加入sPRingMvc所需要的jar

<dependency>   <groupId>org.springframework</groupId>   <artifactId>spring-aop</artifactId>   <version>4.3.4.RELEASE</version></dependency><dependency>   <groupId>org.springframework</groupId>   <artifactId>spring-beans</artifactId>   <version>4.3.4.RELEASE</version></dependency><dependency>   <groupId>org.springframework</groupId>   <artifactId>spring-context</artifactId>   <version>4.3.4.RELEASE</version></dependency><dependency>   <groupId>org.springframework</groupId>   <artifactId>spring-core</artifactId>   <version>4.3.4.RELEASE</version></dependency><dependency>   <groupId>org.springframework</groupId>   <artifactId>spring-web</artifactId>   <version>4.3.4.RELEASE</version></dependency><dependency>   <groupId>org.springframework</groupId>   <artifactId>spring-webmvc</artifactId>   <version>4.3.4.RELEASE</version></dependency><dependency>   <groupId>org.springframework</groupId>   <artifactId>spring-expression</artifactId>   <version>4.3.4.RELEASE</version></dependency><dependency>   <groupId>commons-logging</groupId>   <artifactId>commons-logging</artifactId>   <version>1.1.3</version></dependency>

3、在src/main下面建立webapp文件夹，在webapp下建立WEB-INF文件夹，在WEB-INF下面建立web.xml和applicationContext.xml,如图

4、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" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5"><welcome-file-list>       <welcome-file>index.jsp</welcome-file>  </welcome-file-list><!-- 加载spring容器 --><listener><listener-class>org.springframework.web.context.ContextLoaderListener</listener-class></listener><!-- 这个是用来分发请求的，必须要 --><servlet>   <servlet-name>springServlet</servlet-name>   <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>   <init-param>     <param-name>contextConfigLocation</param-name>     <param-value>/WEB-INF/applicationContext.xml</param-value>   </init-param>    <load-on-startup>1</load-on-startup>  </servlet>  <servlet-mapping>   <servlet-name>springServlet</servlet-name>   <url-pattern>/</url-pattern>  </servlet-mapping>  </web-app>

5、项目会默认加载WEB-INF下面的applicationContext.xml,如果在其他位置，请在web.xml里面配置

<?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:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd    http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd"><!-- 这个配置是用来处理ModelAndView,路径和后缀 --><beanclass="org.springframework.web.servlet.view.InternalResourceViewResolver"><property name="prefix" value="/WEB-INF/views/" /><property name="suffix" value=".jsp" /></bean><context:property-placeholder location="classpath:MySQL.properties" />    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">     <property name="driverClassName" value="${jdbc.driverClassName}" />     <property name="url" value="${jdbc.url}" />  </bean>   <!-- 事务   --><bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">     <property name="dataSource" ref="dataSource" />  </bean>   <bean id="sqlsessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">     <property name="configLocation" value="classpath:mybatis-config.xml" />     <property name="dataSource" ref="dataSource" />  </bean>  <!-- 通过注解扫描Mapper接口 --><bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"><property name="annotationClass" value="org.springframework.stereotype.Repository" /> <property name="basePackage" value="com.book.dao" /><property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" /></bean><!-- 通过注解扫描bean --><context:component-scan base-package="com"></context:component-scan></beans>

6、src/main下面简历resources文件夹，generatorConfig.xml用来自动生成代码，mybatis-config.xml如下

<?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><settings><!-- 是否启用缓存 --><setting name="cacheEnabled" value="true" /><!-- 是否启用延时加载 --><setting name="lazyLoadingEnabled" value="true" /><setting name="aggressiveLazyLoading" value="false" /><setting name="jdbcTypeForNull" value="VARCHAR" /><!-- MyBatis SQL Log--><setting name="logPrefix" value="dao."/></settings></configuration>

7、mybatis所需jar

<dependency>   <groupId>org.mybatis</groupId>   <artifactId>mybatis</artifactId>   <version>3.4.1</version></dependency><dependency>   <groupId>org.mybatis</groupId>   <artifactId>mybatis-spring</artifactId>   <version>1.3.0</version></dependency><dependency>   <groupId>org.springframework</groupId>   <artifactId>spring-jdbc</artifactId>   <version>4.3.4.RELEASE</version></dependency><dependency>   <groupId>log4j</groupId>   <artifactId>log4j</artifactId>   <version>1.2.17</version></dependency><dependency>   <groupId>mysql</groupId>   <artifactId>mysql-connector-java</artifactId>   <version>5.1.38</version></dependency><dependency>   <groupId>jstl</groupId>   <artifactId>jstl</artifactId>   <version>1.2</version></dependency>

9、mysql.properties

jdbc.driverClassName=com.mysql.jdbc.Driverjdbc.url=jdbc:mysql://127.0.0.1/booksystem?user=root&passWord=&useUnicode=true&characterEncoding=UTF-8

10、注意

（1）control层要想识别@requestmapping必须在web.xml加入org.springframework.web.servlet.DispatcherServlet这个serverlet

(2)要用ModelAndView，必须在applicationContext.xml加入

<beanclass="org.springframework.web.servlet.view.InternalResourceViewResolver"><property name="prefix" value="/WEB-INF/views/" /><property name="suffix" value=".jsp" /></bean>

（3）一般bean用这个扫描

<context:component-scan base-package="com"></context:component-scan>

Mapper接口用这个扫描

<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"><property name="annotationClass" value="org.springframework.stereotype.Repository" /> <property name="basePackage" value="com.book.dao" /><property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" /></bean>

（4）主要applicaitonContext.xml里面bean的顺序

（5）jsp文件要用jstl标签的话，请加入相应的jar