快速入门SSM整合配置建立第一个SSM项目模板

曾经终败给现在 2023-10-18 12:44 2阅读 0赞

## 场景 ##

对于新手来说，学过Spring、SpringMVC、Mybatis，但是将其整合起来搭建项目就

比较困难。

### 环境 ###

Eclipse+Mysql5.7+jdk8，没有搭建Maven项目，入门已经将需要jar包整理好。

## 实现 ##

### 新建项目 ###

1.打开Eclipse--File--new--Dynamic Web Project

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70][]

2.输入ssmJarTemplate项目名，点击Next--Next，勾选生成web.xml

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 1][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 2][]

项目建成后的目录为

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 3][]

3.下载SSM整合所需的jar包，然后将里面的jar包复制到项目下的WEB-INF 下的lib下

SSM整合所需jar下载

[https://download.csdn.net/download/badao\_liumang\_qizhi/10855459][https_download.csdn.net_download_badao_liumang_qizhi_10855459]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 4][]

### 数据库配置 ###

1.新建数据库ssmtest，并新建表user

![20181217171835709.jpg][]

2.给User表添加字段

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 5][]

3.给user表添加几条数据

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 6][]

### MVC实现 ###

1.在ECclipse下新建MVC结构目录

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 7][]

### 业务代码实现 ###

#### 新建pojo ####

在com.badao.pojo包下新建User.java

package com.badao.pojo;
    
    
    public class User {
     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;
     }
    
    }

#### 新建mapper ####

在com.badao.mapper包新建UserMapper.java（接口）

声明所需的方法，这里只声明增删改查

package com.badao.mapper;
    
    import java.util.List;
    
    import com.badao.pojo.User;
    
    
    
    public interface UserMapper {
     public int addUser(User user);
     public User selectUser(int id);
     public int updateUser(User user);
     public void deleteUser(int id);
     public List<User> selectAllUser();
    }

再在mapper包下新建UserMapper.xml

其中namespace属性要与上面所新建的接口一致

id属性要与上面所建方法名一致

<?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.badao.mapper.UserMapper">
            <insert id="addUser" parameterType="User" >
                insert into user ( name,age ) values (#{name},#{age})  
            </insert>
            
            <delete id= "deleteUser" parameterType= "="_int" >
                delete from user where id= #{id} 
            </delete>
            
            <select id="selectUser" parameterType="_int" resultType="User">
                select * from   user  where id= #{id}  
            </select>
     
           <update id="updateUser" parameterType= "User"><BR>           updateusersetname=#{name},age=#{age} where id=#{id}  
            </update>
            <select id="selectAllUser" resultType="User">
                select * from   user    
            </select>   
        </mapper>

### 实现Controller ###

在controller包下新建UserController.java

实现映射简单的请求路径listUser并简单的查询所有user，然后跳转到listUser.jsp

package com.badao.controller;
    
    import java.util.List;
    
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.servlet.ModelAndView;
    
    import com.badao.pojo.User;
    import com.badao.service.UserService;
    
    
    
    // 告诉spring mvc这是一个控制器类
    @Controller
    @RequestMapping("")
    public class UserController {
     @Autowired
     UserService userService;
    
     @RequestMapping("listUser")
     public ModelAndView listUser(){
      ModelAndView mav = new ModelAndView();
      List<User> cs= userService.selectAllUser();
      
      // 放入转发参数
      mav.addObject("userList", cs);
      // 放入jsp路径
      mav.setViewName("listUser");
      return mav;
     }
    
    }

### 实现Service ###

在service包下新建UserService.java（接口）

package com.badao.service;
    
    import java.util.List;
    
    import com.badao.pojo.User;
    
    public interface UserService {
     List<User> selectAllUser();
    
    }

再在此包下新建impl包，在impl包下新建UserServiceImpl.java作为前面service的实现lei。

package com.badao.service.impl;
    
    import java.util.List;
    
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.stereotype.Service;
    
    import com.badao.mapper.UserMapper;
    import com.badao.pojo.User;
    import com.badao.service.UserService;
    @Service
    public class UserServiceImpl implements UserService {
    
     @Autowired
     UserMapper userMapper;
     public List<User> selectAllUser() {
      // TODO Auto-generated method stub
      return userMapper.selectAllUser();
     }
    
    }

### 实现jsp页面 ###

在WEB-INF目录下新建jsp目录，再在此目录下新建jsp目录，在jsp目录下新建

listUser.jsp

<%
     pageContext.setAttribute("APP_PATH", request.getContextPath());
    %>
    <!DOCTYPE html>
    <html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>查询所有用户</title>
    </head>
    
    <script type="text/javascript" src="${APP_PATH }/static/js/jquery-1.12.4.min.js"></script>
    <link href="${APP_PATH }/static/bootstrap-3.3.7-dist/css/bootstrap.min.css" rel="stylesheet">
    <script src="${APP_PATH }/static/bootstrap-3.3.7-dist/js/bootstrap.min.js"></script>
    <body>
    <table align='center' border='1' cellspacing='0' class="table table-bordered"
        <th >
            <td>id</td>
            <td>name</td>
            <td>age</td>
        </th>
        <c:forEach items="${userList}" var="u">
            <tr class="active">
                <td >${u.id}</td>
                <td>${u.name}</td>
                <td>${u.age}</td>
                 
            </tr>
        </c:forEach>
    </table>
      </body>
    </html>

在此页面引入了bootstrap，用来显示查询到的所有user，关于怎样引入bootstrap

参照

[https://blog.csdn.net/BADAO\_LIUMANG\_QIZHI/article/details/85037589][https_blog.csdn.net_BADAO_LIUMANG_QIZHI_article_details_85037589]

### 实现SSM整合配置 ###

#### 配置web.xml ####

通过ContextLoaderListener在web app启动的时候，获取contextConfigLocation配置文件的文件名applicationContext.xml，并进行Spring相关初始化工作。

有任何访问，都被DispatcherServlet所拦截。

<?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"
             xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5">
     
     
     <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>mvc-dispatcher</servlet-name>
      <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
      
      <init-param>
       <param-name>contextConfigLocation</param-name>
       <param-value>classpath:springMVC.xml</param-value>
      </init-param>
      <load-on-startup>1</load-on-startup>
     </servlet>
     <servlet-mapping>
      <servlet-name>mvc-dispatcher</servlet-name>
      <url-pattern>/</url-pattern>
     </servlet-mapping>
     
    </web-app>

#### Spring的配置文件applicationContext.xml ####

在src目录下新建applicationContext.xml

1.激活注解

<context:annotation-config />

用于激活那些已经在spring容器里注册过的bean（无论是通过xml的方式还是通过package sanning的方式）上面的注解。

2.组件扫描

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

除了具有<context:annotation-config>的功能之外，<context:component-scan>还可以在指定的package下扫描以及注册javabean 。

3.配置数据源

将用户名与密码改成自己的

<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource"> 
       <property name="driverClassName"> 
           <value>com.mysql.jdbc.Driver</value> 
       </property> 
       <property name="url"> 
           <value>jdbc:mysql://localhost:3306/ssmtest?characterEncoding=UTF-8</value> 
       </property> 
       <property name="username"> 
           <value>root</value> 
       </property> 
       <property name="password"> 
           <value>root</value> 
       </property>   
    </bean>

4.扫描存放SQL语句的UserMapper.xml

5.扫描Mapper，并将其纳入Spring的管理

6.applicationContext.xml完整代码

<?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:tx="http://www.springframework.org/schema/tx" xmlns:jdbc="http://www.springframework.org/schema/jdbc"
     xmlns:context="http://www.springframework.org/schema/context"
     xmlns:mvc="http://www.springframework.org/schema/mvc"
     xsi:schemaLocation="
         http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
         http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
         http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.0.xsd
         http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
         http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
         http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">
     
     
    
    
       <context:annotation-config />
       <context:component-scan base-package="com.badao.service" />
    
     <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource"> 
       <property name="driverClassName"> 
           <value>com.mysql.jdbc.Driver</value> 
       </property> 
       <property name="url"> 
           <value>jdbc:mysql://localhost:3306/ssmtest?characterEncoding=UTF-8</value> 
       </property> 
       <property name="username"> 
           <value>root</value> 
       </property> 
       <property name="password"> 
           <value>523627</value> 
       </property>   
     </bean>
     
     
     <bean id="sqlSession" class="org.mybatis.spring.SqlSessionFactoryBean">
      <property name="typeAliasesPackage" value="com.badao.pojo" />
      <property name="dataSource" ref="dataSource"/>
      <property name="mapperLocations" value="classpath:com/badao/mapper/*.xml"/>
     </bean>
    
     <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
      <property name="basePackage" value="com.badao.mapper"/>
     </bean>
    
    
    
    </beans>

#### 配置SpringMVC ####

src目录下新建SpringMVC.xml

1.开启注解驱动<mvc:annotation-driven />

会自动注册DefaultAnnotationHandlerMapping与AnnotationMethodHandlerAdapter 两个bean,是spring MVC为@Controllers分发请求所必须的。

并提供了：数据绑定支持，@NumberFormatannotation支持，@DateTimeFormat支持，@Valid支持，读写XML的支持（JAXB），读写JSON的支持（Jackson）。

2.扫描Controller,并将其生命周期纳入Spring管理

<context:component-scan base-package="com.badao.controller">
              <context:include-filter type="annotation"
              expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>

3.启用默认处理器，使静态资源可以访问

<mvc:default-servlet-handler />

4.视图解析器

5.SpringMVC.xml完整代码

<?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:tx="http://www.springframework.org/schema/tx" xmlns:jdbc="http://www.springframework.org/schema/jdbc"
        xmlns:context="http://www.springframework.org/schema/context"
        xmlns:mvc="http://www.springframework.org/schema/mvc"
        xsi:schemaLocation="http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.0.xsd
            http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
            http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
            http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
            http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
            http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd">
    
    
    
        <context:annotation-config/>
    
        <context:component-scan base-package="com.badao.controller">
              <context:include-filter type="annotation"
              expression="org.springframework.stereotype.Controller"/>
        </context:component-scan>
    
        <mvc:annotation-driven />
       
        <mvc:default-servlet-handler />
    
    
        <bean
            class="org.springframework.web.servlet.view.InternalResourceViewResolver">
            <property name="viewClass"
                value="org.springframework.web.servlet.view.JstlView" />
            <property name="prefix" value="/WEB-INF/jsp/" />
            <property name="suffix" value=".jsp" />
        </bean>
    </beans>

### 项目目录 ###

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 8][]

####  ####

### 启动项目 ###

将项目部署到Tomcat中，打开浏览器输入：

[http://127.0.0.1:8080/ssmtest/listUser][http_127.0.0.1_8080_ssmtest_listUser]

![20181217172221769.jpg][]

###    项目下载 ###

[https://download.csdn.net/download/badao\_liumang\_qizhi/10856312][https_download.csdn.net_download_badao_liumang_qizhi_10856312]

####     ####

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/2018121717171590.jpg?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk=,size_16,color_FFFFFF,t_70
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[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 3]: https://img-blog.csdnimg.cn/2018121717180954.jpg?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk=,size_16,color_FFFFFF,t_70
[https_download.csdn.net_download_badao_liumang_qizhi_10855459]: https://download.csdn.net/download/badao_liumang_qizhi/10855459
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[20181217171835709.jpg]: https://img-blog.csdnimg.cn/20181217171835709.jpg
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[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 7]: https://img-blog.csdnimg.cn/20181217171857639.jpg?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk=,size_16,color_FFFFFF,t_70
[https_blog.csdn.net_BADAO_LIUMANG_QIZHI_article_details_85037589]: https://blog.csdn.net/BADAO_LIUMANG_QIZHI/article/details/85037589
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[http_127.0.0.1_8080_ssmtest_listUser]: http://127.0.0.1:8080/ssmtest/listUser
[20181217172221769.jpg]: https://img-blog.csdnimg.cn/20181217172221769.jpg
[https_download.csdn.net_download_badao_liumang_qizhi_10856312]: https://download.csdn.net/download/badao_liumang_qizhi/10856312