SSM（Maven集成）

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ssm全称:Spring+SpringMVC+Mybatis

ssm简介：

1、Spring

Spring是一个开源框架，Spring是于2003 年兴起的一个轻量级的Java 开发框架，由Rod Johnson 在其著作Expert One-On-One J2EE Development and Design中阐述的部分理念和原型衍生而来。它是为了解决企业应用开发的复杂性而创建的。Spring使用基本的JavaBean来完成以前只可能由EJB完成的事情。然而，Spring的用途不仅限于服务器端的开发。从简单性、可测试性和松耦合的角度而言，任何Java应用都可以从Spring中受益。 简单来说，Spring是一个轻量级的控制反转（IoC）和面向切面（AOP）的容器框架。

2、SpringMVC

　　 Spring MVC属于SpringFrameWork的后续产品，已经融合在Spring Web Flow里面。Spring MVC 分离了控制器、模型对象、分派器以及处理程序对象的角色，这种分离让它们更容易进行定制。

3、MyBatis

　　　MyBatis 本是apache的一个开源项目iBatis, 2010年这个项目由apache software foundation 迁移到了google code，并且改名为MyBatis 。MyBatis是一个基于Java的持久层框架。iBATIS提供的持久层框架包括SQL Maps和Data Access Objects（DAO）MyBatis 消除了几乎所有的JDBC代码和参数的手工设置以及结果集的检索。MyBatis 使用简单的 XML或注解用于配置和原始映射，将接口和 Java 的POJOs（Plain Old Java Objects，普通的 Java对象）映射成数据库中的记录。

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创建步骤如下：

一、使用IntelliJ IDEA 创建Maven管理的JAVA Web项目

①新建项目，选择Maven Module

在本地磁盘用户的。.m2目录下生成settings文件：

Maven工程搭建完毕！！！

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idea严格目录区分：main下必须书写java和resources,test也如此。

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② 开发步骤：

书写pom.xnl下载所需jar

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>cn.hq</groupId>
  <artifactId>SpringMVC_SSM</artifactId>
  <packaging>war</packaging>
  <version>1.0-SNAPSHOT</version>
  <name>SpringMVC_SSM Maven Webapp</name>
  <url>http://maven.apache.org</url>
  <dependencies>
    <!--junit配置-->
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>

    <dependency>
      <groupId>javaee</groupId>
      <artifactId>javaee-api</artifactId>
      <version>5</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-core</artifactId>
      <version>4.2.2.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-beans</artifactId>
      <version>4.2.2.RELEASE</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>4.2.2.RELEASE</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-tx</artifactId>
      <version>4.1.9.RELEASE</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aspects</artifactId>
      <version>4.2.1.RELEASE</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context-support</artifactId>
      <version>4.1.9.RELEASE</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
      <version>4.1.9.RELEASE</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-web</artifactId>
      <version>4.2.3.RELEASE</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>4.1.9.RELEASE</version>
    </dependency>

    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.2.2</version>
    </dependency>

    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>1.3.0</version>
    </dependency>

    <dependency>
      <groupId>org.javassist</groupId>
      <artifactId>javassist</artifactId>
      <version>3.17.1-GA</version>
    </dependency>

    <dependency>
      <groupId>cglib</groupId>
      <artifactId>cglib</artifactId>
      <version>2.2.2</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>4.2.3.release</version>
    </dependency>

    <dependency>
      <groupId>c3p0</groupId>
      <artifactId>c3p0</artifactId>
      <version>0.9.1.2</version>
    </dependency>

    <dependency>
        <groupId>com.oracle</groupId>
        <artifactId>ojdbc6</artifactId>
        <version>11.2.0.1.0</version>
    </dependency>

  </dependencies>
  <build>
    <finalName>SpringMVC_SSM</finalName>
  </build>
</project>

　

3.由于Maven对oracle数据库的不支持，我们需要将Oracle装载到本地仓库：

　(1).查询Oracle安装目录:D:\app\asus\product\11.2.0\dbhome_1\jdbc\lib

　　  配置Maven3.3.9 bin到环境变量

然后可以通过cmd命令行 mvn -version测试有没有测试成功！！！

(2).定位到Oracle安装目录的jdbc文件夹

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4.搭建分层架构---实现添加学生

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实体类UserInfo:

package cn.hq.entity;

/**
 * Created by hq on 2017/1/16.
 */
public class UserInfo {

    private Integer id;
    private String name;
    private Integer age;

    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 Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }
}
　dao接口：　无需dao实现类，通过代理生成

public interface IUserInfoDao {
    public void add(UserInfo info);

}
　service层：

public interface IUserInfoService {

    public void add(UserInfo info);
}
　service实现类：

public class UserInfoServiceImpl implements IUserInfoService {
    private IUserInfoDao dao;
    public void add(UserInfo info) {
        dao.add(info);
    }

    public IUserInfoDao getDao() {
        return dao;
    }

    public void setDao(IUserInfoDao dao) {
        this.dao = dao;
    }
}

　　

　控制器类：controller　

public class UserInfoController implements Controller {

    private IUserInfoService service;

    public ModelAndView handleRequest(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse) throws Exception {

        String uname=httpServletRequest.getParameter("uname");
        Integer uage=Integer.valueOf(httpServletRequest.getParameter("uage"));

        UserInfo info=new UserInfo();
        info.setName(uname);
        info.setAge(uage);

        service.add(info);

        return new ModelAndView("/welcome.jsp");
    }

    public IUserInfoService getService() {
        return service;
    }

    public void setService(IUserInfoService service) {
        this.service = service;
    }
}

由于是整合MyBatis，需要书写核心配置文件：

小配置：UserInfoDao.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="cn.hq.dao.IUserInfoDao">
<select id="add" parameterType="UserInfo">
insert into userinfo values(SEQ_Num.nextval,#{name},#{age})
</select>

</mapper>

MyBatis配置文件：mybatis-config.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>
<typeAliases>
<package name="cn.hq.entity"/>
</typeAliases>

<mappers>

<package name="cn.hq.dao"/>

</mappers>
</configuration>

　applicationContext.xml：进行植入dao、service、controller、事务管理器、数据源、sessionFactory　

　

<?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-4.1.xsd
         http://www.springframework.org/schema/tx
         http://www.springframework.org/schema/tx/spring-tx-4.1.xsd
         http://www.springframework.org/schema/context
         http://www.springframework.org/schema/context/spring-context-4.1.xsd  " >

   <!-- 01.配置数据源 -->
   <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 关联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="mapperLocations" value="classpath:cn/hq/dao/IUserInfoDAO.xml"></property-->
       <property name="dataSource" ref="dataSource"></property>
 </bean>

   <!-- 03.生成dao代理對象 -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
       <property name="sqlSessionFactoryBeanName" value="sessionFactory"></property>
       <property name="basePackage" value="cn.hq.dao"></property>
    </bean>

    <!--04.配置service-->
     <bean id="userService" class="cn.hq.service.UserInfoServiceImpl">
        <property name="dao" ref="IUserInfoDAO"></property>
    </bean>

    <!-- 05.配置action -->
     <bean id="/userAction.do" class="cn.hq.controller.UserInfoController">
       <property name="service" ref="userService"></property>
    </bean>

    <!-- 06.配置事务管理器 -->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
      <property name="dataSource" ref="dataSource"></property>
    </bean>

    <!-- 07.配置开启事务操作 -->
   <tx:advice id="txAdvice" transaction-manager="transactionManager">
     <tx:attributes>
     <!--指定在连接方法上应用的事务属性 -->
        <tx:method name="add*" isolation="DEFAULT" propagation="REQUIRED"/>
     </tx:attributes>
   </tx:advice>
   <!-- aop配置 -->
  <aop:config>
     <aop:pointcut expression="execution(* *..service.*.*(..))" id="stockPointcut"/>
     <aop:advisor advice-ref="txAdvice" pointcut-ref="stockPointcut"/>
  </aop:config>

 </beans>

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index.jsp页面：

<body>
<form action="${pageContext.request.contextPath }/userAction.do" method="post">
    用户名：<input name="uname"/> <br/><br/>
    年龄:<input name="uage"/><br/><br/>
    <input type="submit" value="add"/>
</form>
</body>

　Web.xml:进行配置中央调度器　

<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
         version="3.1">
  <!-- 1.针对Spring配置：读取配置文件 -->
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:applicationContext.xml</param-value>
  </context-param>

  <!-- 注册ServletContext监听器，创建容器对象，并且将ApplicationContext对象放到Application域中 -->
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>

  <!-- 针对SpringMVC的配置：：：：：：中央调度器：本质上一个serlvet            配置的关于SpringmVC组件 -->
  <servlet>
    <servlet-name>springmvc</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <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>

  <!-- 解决乱码的过滤器 -->
  <filter>
    <filter-name>CharacterEncodingFilter</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>CharacterEncodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>
</web-app>

实现效果：

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注：若出现此类异常--org.apache.ibatis.binding.BindingException: Invalid bound statement (not found)

解决方案：参见博客

http://www.cnblogs.com/jstarseven/p/5803697.html

http://blog.csdn.net/shifangwannian/article/details/48882201 

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生活不止眼前的苟且，还有诗和远方。

　　　　　　　　　　---高晓松