21.ssm框架--详细整合教程（Spring+SpringMVC+Mybatis）

11、基本概念

1.1、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。

1.2、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。

1.3、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。

 

2、SSM整合

　　1.完整目录结构如下（创建的是Maven-web工程）：

　　

　　2.Maven中需要添加的依赖（pom.xml文件）

<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/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.sxt</groupId>
  <artifactId>mybatis.12.ssm</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>war</packaging>
  <dependencies>
      <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-context</artifactId>
          <version>4.3.21.RELEASE</version>
      </dependency>
      <dependency>
          <groupId>org.aspectj</groupId>
          <artifactId>aspectjweaver</artifactId>
          <version>1.8.5</version>
      </dependency>
      <dependency>
          <groupId>com.mchange</groupId>
          <artifactId>c3p0</artifactId>
          <version>0.9.5.3</version>
      </dependency>
      <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-orm</artifactId>
          <version>4.3.21.RELEASE</version>
      </dependency>
      <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-tx</artifactId>
          <version>4.3.21.RELEASE</version>
      </dependency>
      <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-webmvc</artifactId>
          <version>4.3.21.RELEASE</version>
      </dependency>
      <dependency>
          <groupId>org.mybatis</groupId>
          <artifactId>mybatis-spring</artifactId>
          <version>1.3.2</version>
      </dependency>
      <dependency>
          <groupId>org.mybatis</groupId>
          <artifactId>mybatis</artifactId>
          <version>3.4.6</version>
      </dependency>
      <dependency>
          <groupId>mysql</groupId>
          <artifactId>mysql-connector-java</artifactId>
          <version>5.1.47</version>
      </dependency>
      <dependency>
          <groupId>javax.servlet</groupId>
          <artifactId>javax.servlet-api</artifactId>
          <version>3.0.1</version>
          <scope>test</scope>
      </dependency>
      <dependency>
          <groupId>jstl</groupId>
          <artifactId>jstl</artifactId>
          <version>1.2</version>
      </dependency>
      <dependency>
          <groupId>taglibs</groupId>
          <artifactId>standard</artifactId>
          <version>1.1.2</version>
      </dependency>
      <dependency>
          <groupId>org.slf4j</groupId>
          <artifactId>slf4j-log4j12</artifactId>
          <version>1.6.4</version>
      </dependency>
  </dependencies>
  
  <build>
        <plugins>
            <!-- tomcat插件 -->
            <plugin>
                <groupId>org.apache.tomcat.maven</groupId>
                <artifactId>tomcat7-maven-plugin</artifactId>
                <version>2.2</version>
                <configuration>
                    <!-- 端口号 -->
                    <port>80</port>
                    <!-- /表示访问路径 省略项目名 -->
                    <path>/</path>
                    <!-- 设置编码方式 -->
                    <uriEncoding>utf-8</uriEncoding>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

　　3.配置web.xml文件（文件路径：/mybatis.12.ssm/src/main/webapp/WEB-INF/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_2_5.xsd"
    id="WebApp_ID" version="2.5" >

 <!-- 配置spring -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:applicationContext.xml</param-value>
    </context-param>
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
  
  <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:spring-mvc.xml</param-value>
    </init-param>
  </servlet>
  <servlet-mapping>
    <servlet-name>springmvc</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>
  <filter>
    <filter-name>encoding</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>forceRequestEncoding</param-name>
      <param-value>true</param-value>
    </init-param>
    <init-param>
      <param-name>forceResponseEncoding</param-name>
      <param-value>true</param-value>
    </init-param>
  </filter>
  <filter-mapping>
    <filter-name>encoding</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>
  <servlet-mapping>
    <servlet-name>default</servlet-name>
    <url-pattern>*.jpg</url-pattern>
  </servlet-mapping>
  <servlet-mapping>
    <servlet-name>default</servlet-name>
    <url-pattern>*.html</url-pattern>
  </servlet-mapping>
  <servlet-mapping>
    <servlet-name>default</servlet-name>
    <url-pattern>*.css</url-pattern>
  </servlet-mapping>
  <servlet-mapping>
    <servlet-name>default</servlet-name>
    <url-pattern>*.js</url-pattern>
  </servlet-mapping>
</web-app>

　　4.配置spring-mvc.xml文件

<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:aop="http://www.springframework.org/schema/aop"
    xmlns:tx="http://www.springframework.org/schema/tx"
    xmlns:mvc="http://www.springframework.org/schema/mvc"
    xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-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/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd">
    
    <context:component-scan base-package="com.sxt.controller"></context:component-scan>
    <mvc:annotation-driven></mvc:annotation-driven>
</beans>

　　5.配置applicationContext.xml文件

<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:aop="http://www.springframework.org/schema/aop" 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/context http://www.springframework.org/schema/context/spring-context-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/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd">
    <!-- 关联数据属性文件 -->
    <context:property-placeholder location="classpath:db.properties"/>
    <!-- 开启扫描 -->
    <context:component-scan base-package="com.sxt.service.impl"/>

    <!-- 配置数据源 -->
    <bean class="com.mchange.v2.c3p0.ComboPooledDataSource" id="dataSource" >
        <property name="driverClass" value="${driverName}"></property>
        <property name="jdbcUrl" value="${url}"></property>
        <property name="user" value="${names}"></property>
        <property name="password" value="${password}"></property>
    </bean>
    <!-- 整合mybatis -->
    <bean class="org.mybatis.spring.SqlSessionFactoryBean" id="sqlSessionFactoryBean" >
        <!-- 关联数据源 -->
        <property name="dataSource" ref="dataSource"/>
        <!-- 关联mybatis的配置文件 -->
        <property name="configLocation" value="classpath:mybatis-cfg.xml"/>
        <!-- 添加别名设置 -->
        <property name="typeAliasesPackage" value="com.sxt.pojo"/>
    </bean>
    <!-- 配置扫描的路径 -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer" >
        <property name="basePackage" value="com.sxt.mapper"/>
    </bean>
</beans>

　　6.配置db.properties文件（本人数据库名称是j0325，用户名是root，密码是123）

# 开发环境
driverName=com.mysql.jdbc.Driver
url=jdbc:mysql://localhost:3306/j0325?characterEncoding=utf-8
names=root
password=123

# 测试环境
#driverName=com.mysql.jdbc.Driver
#url=jdbc:mysql://localhost:3306/j0325?characterEncoding=utf-8
#userName=root
#password=123456

# 生产环境
#driverName=com.mysql.jdbc.Driver
#url=jdbc:mysql://localhost:3306/j0325?characterEncoding=utf-8
#userName=root
#password=123456

　　7.配置mybatis-cfg.xml文件

<?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>
         <!-- 开启延迟加载 -->
         <setting name="lazyLoadingEnabled" value="true"/>
         <setting name="aggressiveLazyLoading" value="false"/>
     </settings>
    
</configuration>

　　8.配置mybatis-generator.xml逆向工程文件

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE generatorConfiguration
  PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
  "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">

<generatorConfiguration>
   <!-- 数据库的驱动包路径 -->
  <classPathEntry location="C:	oolsmaven-repositorymysqlmysql-connector-java5.1.27mysql-connector-java-5.1.27.jar" />

  <context id="DB2Tables" targetRuntime="MyBatis3">
  <!-- 去掉生成文件中的注释 -->
        <commentGenerator>
            <property name="suppressAllComments" value="true" />
        </commentGenerator>
      <!-- 数据库链接URL、用户名、密码 --> 
    <jdbcConnection driverClass="com.mysql.jdbc.Driver"  
        connectionURL="jdbc:mysql://localhost:3306/j0325"  
        userId="root"  
        password="123">  
    </jdbcConnection>   
    <!-- <jdbcConnection driverClass="oracle.jdbc.driver.OracleDriver" 
          connectionURL="jdbc:oracle:thin:@localhost:1521:XE" 
          userId="car" 
          password="car"> 
  </jdbcConnection>  -->
    
    <javaTypeResolver >
      <property name="forceBigDecimals" value="false" />
    </javaTypeResolver>
    
    <!-- 生成模型的包名和位置 --> 
    <javaModelGenerator targetPackage="com.sxt.pojo" targetProject="mybatis.13.springsrcmainjava">
        <!-- 是否在当前路径下新加一层schema,eg：fase路径com.oop.eksp.user.model， true:com.oop.eksp.user.model.[schemaName] --> 
      <property name="enableSubPackages" value="false" />
      <property name="trimStrings" value="true" />
    </javaModelGenerator>
    
     <!-- 生成的映射文件包名和位置 -->
    <sqlMapGenerator targetPackage="com.sxt.mapper"  targetProject="mybatis.13.springsrcmainjava">
      <property name="enableSubPackages" value="false" />
    </sqlMapGenerator>
    
     <!-- 生成DAO的包名和位置 --> 
    <javaClientGenerator type="XMLMAPPER" targetPackage="com.sxt.mapper"  targetProject="mybatis.13.springsrcmainjava">
      <property name="enableSubPackages" value="false" />
    </javaClientGenerator>
    
     <table  tableName="t_user" domainObjectName="UserBean" ></table> 
    
  </context>
</generatorConfiguration>

　　9.配置log4j.properties日志信息文件

log4j.rootCategory=INFO, stdout , R
 
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=[QC] %p [%t] %C.%M(%L) | %m%n
 
log4j.appender.R=org.apache.log4j.DailyRollingFileAppender
log4j.appender.R.File=C:\tools\logs\dpb.log
log4j.appender.R.layout=org.apache.log4j.PatternLayout
log4j.appender.R.layout.ConversionPattern=%d-[TS] %p %t %c - %m%n

3、数据测试

　　1.创建IUserService接口

package com.sxt.service;

import java.util.List;

import com.sxt.pojo.UserBean;

public interface IUserService {
    
    public List<UserBean> query();
    
    public Integer insert(UserBean user);
    
    public Integer update(UserBean user);
    
    public Integer delete(Integer id);

}

　　2.创建UserServiceImpl

package com.sxt.service.impl;

import java.util.List;

import javax.annotation.Resource;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.sxt.mapper.UserBeanMapper;
import com.sxt.pojo.UserBean;
import com.sxt.pojo.UserBeanExample;
import com.sxt.service.IUserService;

@Service
public class UserServiceImpl implements IUserService{
    
    @Resource
    private UserBeanMapper mapper;

    @Override
    public List<UserBean> query() {
        // TODO Auto-generated method stub
        UserBeanExample example = new UserBeanExample();
        return mapper.selectByExample(example);
    }

    @Override
    public Integer insert(UserBean user) {
        // TODO Auto-generated method stub
        return mapper.insertSelective(user);
    }

    @Override
    public Integer update(UserBean user) {
        // TODO Auto-generated method stub
        return mapper.updateByPrimaryKeySelective(user);
    }

    @Override
    public Integer delete(Integer id) {
        // TODO Auto-generated method stub
        return mapper.deleteByPrimaryKey(id);
    }

}

　　3.创建UserController（本人简单实现了下查询功能，需要实现其他功能请自行添加）

package com.sxt.controller;

import javax.annotation.Resource;

import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

import com.sxt.service.IUserService;

@Controller
public class UserController {

    @Resource
    private IUserService userService;
    
    @RequestMapping("/query")
    public String query(Model m) {
        m.addAttribute("list", userService.query());
        return "/user.jsp";
    }
}

　　4.创建user.jsp（WEB-INF下面创建）

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<!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>Insert title here</title>
</head>
<body>
    <h1>用户管理</h1>
    <c:forEach items="${list }" var="u">
        ${u.id } -- ${u.name }--${u.age }<br>
    </c:forEach>
</body>
</html>

　　5.运行

　　

　　

　　6.浏览器输入localhost:80/query