Spring+springmvc+Mybatis整合案例 annotation版(myeclipse)詳細版

Spring+springmvc+Mybatis整合案例

Version:annotationjava

 

 文檔結構圖:web

 

從底層開始作起:spring

01.配置web.xml文件

<?xml version="1.0" encoding="UTF-8"?>sql

<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">session

  <display-name></display-name>mybatis

  <!-- 配置spring裝載bean的設置 -->mvc

  <context-param>app

    <param-name>contextConfigLocation</param-name>jsp

    <param-value>classpath:applicationcontext.xml</param-value>post

  </context-param>

<!-- 配置編碼 -->

  <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>

    <init-param>

      <param-name>forceEncoding</param-name>

      <param-value>true</param-value>

    </init-param>

  </filter>

  <filter-mapping>

    <filter-name>CharacterEncoding</filter-name>

    <url-pattern>/*</url-pattern>

  </filter-mapping>

  <servlet>

    <servlet-name>springmvc</servlet-name>

<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

<!-- 配置springmvc須要的組件設置  -->

    <init-param>

      <param-name>contextConfigLocation</param-name>

      <param-value>classpath:applicationContext.xml</param-value>

    </init-param>

    <load-on-startup>1</load-on-startup>

  </servlet>

  <servlet-mapping>

    <servlet-name>springmvc</servlet-name>

    <url-pattern>*.do</url-pattern>

  </servlet-mapping>

  <welcome-file-list>

    <welcome-file>index.jsp</welcome-file>

  </welcome-file-list>

</web-app>

 

 

02.配置applicationcontext.xml文件

<?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:aop="http://www.springframework.org/schema/aop"

xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"

xmlns:tx="http://www.springframework.org/schema/tx"

xsi:schemaLocation="

        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-4.2.xsd

         http://www.springframework.org/schema/tx

         http://www.springframework.org/schema/tx/spring-tx-4.2.xsd

           http://www.springframework.org/schema/context

         http://www.springframework.org/schema/context/spring-context-4.2.xsd  ">

 

<!-- 配置  註解start -->

 

<!--01. 包掃描器 -->

<context:component-scan base-package="cn.zym"></context:component-scan>

 

<!-- 02.數據源 -->

   <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">

        <property name="driverClass" value="${jdbc.driverClass}"></property>

         <property name="jdbcUrl" value="${jdbc.jdbcUrl}"></property>

         <property name="user" value="${jdbc.user}"></property>

         <property name="password" value="${jdbc.password}"></property>

   </bean>

   

   <!-- 1.1 關聯jdbc.properties -->

  <context:property-placeholder location="classpath:jdbc.properties"/>

 

   <!-- 02.配置SessionFactory -->

  <bean id="sessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">

      <property name="configLocation" value="classpath:mybatis-config.xml"></property>

      <property name="dataSource" ref="dataSource"></property>

   </bean>

   

   <!--03. dao -->

   <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">

     <property name="sqlSessionFactoryBeanName" value="sessionFactory"></property>

     <property name="basePackage" value="cn.zym.dao"></property>

   </bean>

   

   <!-- 開啓事務 -->

   <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">

     <property name="dataSource" ref="dataSource"></property>

   </bean>

   <!-- 配置註解驅動   是基於註解的方式使用事務配置聲明(eg@Transactional) -->

   <tx:annotation-driven transaction-manager="transactionManager" />

   </beans>

<!-- 配置  註解end -->

 

 

通常使用Mybatis時不建議使用註解(會下降程序效率和增長開發難度):這裏依然仍是選擇原生的配置;

 

mybatis-config.xml的配置:

 

<?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>

  <typeAliases>

     這裏將pojo包下的類設置了別名(在XXXdao.xml中直接調用該包下的類名便可)

     <package name="cn.zym.pojo"/>

  </typeAliases>

。。。。添加其餘配置文件

</configuration>

 

Dao層書寫:

 

 

 

Ok,這裏須要添加對應daoMybatis操做文件,該文件經過spring容器生成了代理類,在上面有提到;

   <!--03. dao -->   該代理類肯能會有多個,每一個代理類的名稱的生成規則:

InterfaceIUserDao    proxyIUserDao

InterfaceUserDao    proxyuserDao

 

   <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">

     <property name="sqlSessionFactoryBeanName" value="sessionFactory"></property>

     <property name="basePackage" value="cn.zym.dao"></property>

   </bean>

 

Ok,配置dao對應的文件

IUserDao.xml   這裏的xml文件必定要放置在與該接口同目錄下(若是不設置具體描述文件路徑的話;)

<?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="cn.zym.dao.IUserDao">

<select id="save" parameterType="User">

insert into user (name,password) values (#{name},#{password})

</select>

</mapper>

 

 

Ok,接下來是註解配置Controller:

@Controller

@RequestMapping("/")

public class UserController{

@Autowired

@Qualifier("userservice")

private IUserService service;

 

@RequestMapping(value="/adduser.do",method=RequestMethod.POST)

public String addUser(HttpServletRequest request,User user) throws UnsupportedEncodingException{

request.setCharacterEncoding("utf-8");

System.out.println(user);

 

service.save(user);

return "forward:/welcome.jsp";

}

 

 

這樣在前臺直接請求攜帶數據的時候將會觸發該Handler,將數據報錯到DB

Useradd.jsp;

 <body>

    <form action="adduser.do" method="post">

<input type="text" name="name"/><br/>

<input type="text" name="password"/><br/>

<input type="submit" value="submit"/>

    </form>

  </body>

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