快速搭建SSM框架【详细】

电玩女神 2024-03-24 15:03 54阅读 0赞

#### 文章目录 ####

*  一、开发环境准备
 *  二、搭建SSM
 *   *  2.1新建Maven项目
     *  2.2项目整体结构
     *  2.3spring-config.xml配置
     *  2.4jdbc.properties配置
     *  2.5mybatis-config.xml配置
     *  2.6spring-mvc.xml配置
     *  2.7web.xml配置
     *  2.8index.jsp
     *  2.9ok.jsp
     *  2.10Java代码
     *  2.11测试

## 一、开发环境准备 ##

*  JDK1.8
 *  MySQL8
 *  idea2021
 *  Tomcat8.5.87
 *  Apache-Maven3.9

## 二、搭建SSM ##

### 2.1新建Maven项目 ###

【File】-> 【new Project】-> 【选择Archetype】  
![在这里插入图片描述][b07cf64623e44df8b4b6830171f8c6d2.png_pic_center]

### 2.2项目整体结构 ###

**项目的整体结构：** 包括`resources`目录下的xml和`webapp`目录下文件。如果不包含某些文件，就自己创建。

MVC结构、spring-config.xml（applicationContext.xml）、jdbc.properties（数据源）、mybatis-config.xml（mybatis配置类）、spring-mvc.xml（springMVC前端控制器配置类）、web.xml（web项目配置类）

![在这里插入图片描述][68afccfca1504df2a346ab86b2afecb9.png_pic_center]

### 2.3spring-config.xml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"
           xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd">
        
        <context:property-placeholder location="classpath:jdbc.properties"/>
    
        
        <bean id="myDataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">
            <property name="url" value="${database.url}"/>
            <property name="username" value="${database.username}"/>
            <property name="password" value="${database.password}"/>
        </bean>
    
        
        <bean id="factory" class="org.mybatis.spring.SqlSessionFactoryBean">
            
            <property name="dataSource" ref="myDataSource"/>
            
            <property name="configLocation" value="classpath:mybatis-config.xml"/>
        </bean>
    
         
    
        <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
            
            <property name="sqlSessionFactoryBeanName" value="factory"/>
            
            <property name="basePackage" value="com.shenxm.mapper"/>
        </bean>
    </beans>

### 2.4jdbc.properties配置 ###

database.driver=com.mysql.cj.jdbc.Driver
    database.url=jdbc:mysql://localhost:3306/demo
    database.username=root
    database.password=123456

### 2.5mybatis-config.xml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>
        
        <properties resource="jdbc.properties"/>
    
        <settings>
            
            <setting name="logImpl" value="STDOUT_LOGGING"/>
    
            
            <setting name="autoMappingBehavior" value="PARTIAL"/>
    
            
            <setting name="mapUnderscoreToCamelCase" value="true"/>
    
            
            <setting name="lazyLoadingEnabled" value="true"/>
            
        </settings>
    
        
        <mappers>
            
            <package name="com.shenxm.mapper"/>
        </mappers>
    </configuration>

### 2.6spring-mvc.xml配置 ###

### 2.7web.xml配置 ###

<?xml version="1.0" encoding="UTF-8"?>
    <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_4_0.xsd"
             version="4.0">
    
        
        <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>
        </filter>
        <filter-mapping>
            <filter-name>CharacterEncodingFilter</filter-name>
            <url-pattern>/*</url-pattern>
        </filter-mapping>
    
        
        <servlet>
            <servlet-name>DispatcherServlet</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>
            <load-on-startup>1</load-on-startup>
        </servlet>
        <servlet-mapping>
            <servlet-name>DispatcherServlet</servlet-name>
            <url-pattern>/</url-pattern>
        </servlet-mapping>
    
        <context-param>
            
            <param-name>contextConfigLocation</param-name>
            
            <param-value>classpath:spring-config.xml</param-value>
        </context-param>
    
        <listener>
            <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
        </listener>
    </web-app>

### 2.8index.jsp ###

<%@ page contentType="text/html;charset=UTF-8"  pageEncoding="utf-8" language="java" isELIgnored="false" %>
    <html>
    <body>
    <h2>测试</h2>
    <p>创建学生用户信息</p>
    <form action="${pageContext.request.contextPath}/test/add" method="post">
        姓名：<input type="text" name="name"><br/>
        年龄：<input type="text" name="age"><br/>
        <input type="submit" value="注册学生">
    </form>
    </body>
    </html>

### 2.9ok.jsp ###

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
    <html>
    <head>
        <title>成功</title>
        <h2>添加成功，这是一个跳转页面！！！</h2>
    </head>
    <body>
    </body>
    </html>

### 2.10Java代码 ###

**controller层**：

package com.shenxm.controller;
    
    import com.shenxm.po.Test;
    import com.shenxm.service.TestService;
    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;
    
    @Controller
    @RequestMapping("/test")
    public class DemoController {
        
        @Autowired
        private TestService testService;
    
        @RequestMapping("/add")
        public ModelAndView addOneTest(Test test){
        
            ModelAndView modelAndView = new ModelAndView();
            testService.addTest(test);
            System.out.println("addTest方法执行完成");
            modelAndView.setViewName("/ok.jsp");
            return modelAndView;
        }
    }

**service层接口类：**

package com.shenxm.service;
    import com.shenxm.po.Test;
    
    public interface TestService {
        
        int addTest(Test test);
    }

**service层实现类：**

package com.shenxm.service.impl;
    
    import com.shenxm.mapper.TestMapper;
    import com.shenxm.po.Test;
    import com.shenxm.service.TestService;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.stereotype.Service;
    
    @Service
    public class TestServiceImpl implements TestService {
        
    
        @Autowired
        private TestMapper testMapper;
        @Override
        public int addTest(Test test) {
        
            int row = testMapper.addTest(test);
            return row;
        }
    }

**mapper层：**

TestMapper.java

package com.shenxm.mapper;
    import com.shenxm.po.Test;
    import org.springframework.stereotype.Component;
    
    @Component
    public interface TestMapper {
        
        int addTest(Test test);
    }

TestMapper.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="com.shenxm.mapper.TestMapper">
        <insert id="addTest" parameterType="com.shenxm.po.Test" useGeneratedKeys="true" keyProperty="id">
            insert into test values (null,#{name},#{age})
        </insert>
    </mapper>

**po包：**

package com.shenxm.po;
    
    import lombok.AllArgsConstructor;
    import lombok.Builder;
    import lombok.Data;
    import lombok.NoArgsConstructor;
    
    @Data
    @AllArgsConstructor
    @NoArgsConstructor
    @Builder
    public class Test {
        
        /** 自增的id */
        private Integer id;
        /** 姓名 */
        private String name;
        /** 年龄 */
        private Integer age;
    }

### 2.11测试 ###

tomcat8.5配置启动

![在这里插入图片描述][78edd9a3fc324a158892ede389496ea1.png_pic_center]

访问页面：（成功）

![在这里插入图片描述][49b724b97aeb4eec88442108f3aaf846.png_pic_center]

[b07cf64623e44df8b4b6830171f8c6d2.png_pic_center]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/24/02a49c1fbfac4aecb9f6d0ab71b2cde9.png
[68afccfca1504df2a346ab86b2afecb9.png_pic_center]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/24/a5e37810f0e5431f96631ada9af25330.png
[78edd9a3fc324a158892ede389496ea1.png_pic_center]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/24/d132ff9f563548f1bd325e879e495642.png
[49b724b97aeb4eec88442108f3aaf846.png_pic_center]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/24/51bff0fe5a604d96a3dc22bd5d911962.png