SSM框架--Spring+SpringMVC+Mybatis （IDEA）搭建

2023-02-07 08:32:15

使用idea创建一个maven项目( 这里演示的是 web项目)

点击 Finish

然后开始配置 pom.xml文件（添加各种依赖jar包）

先去找 spring 所需的 jar包

jar包中心仓库地址：http://mvnrepository.com/

找到 Spring Web ( 因为我这里演示的是一个web项目)

把这段复制到 pom.xml文件中

下面是我配置完整的pom.xml文件 ( 这里我只在dependencies的下面添加依赖其他的我都没有动 )

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

 <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.oukele.demo</groupId>

   <artifactId>SSM_demo</artifactId>

   <version>1.0-SNAPSHOT</version>

   <packaging>war</packaging>

   <name>SSM_demo Maven Webapp</name>

   <!-- FIXME change it to the project's website -->

   <url>http://www.example.com</url>

   <properties>

     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

     <maven.compiler.source>1.7</maven.compiler.source>

     <maven.compiler.target>1.7</maven.compiler.target>

   </properties>

   <!-- 依赖 -->

   <dependencies>

     <!-- spring 依赖包 -->

     <!-- spring web jar包 -->

     <dependency>

       <groupId>org.springframework</groupId>

       <artifactId>spring-web</artifactId>

       <version>5.1.0.RELEASE</version>

     </dependency>

     <!-- spring aop jar包 -->

     <dependency>

       <groupId>org.springframework</groupId>

       <artifactId>spring-aop</artifactId>

       <version>5.1.0.RELEASE</version>

     </dependency>

     <!-- spring 驱动jar包-->

     <dependency>

       <groupId>org.springframework</groupId>

       <artifactId>spring-jdbc</artifactId>

       <version>5.1.0.RELEASE</version>

     </dependency>

     <!-- spring mvc 依赖包 -->

     <dependency>

       <groupId>org.springframework</groupId>

       <artifactId>spring-webmvc</artifactId>

       <version>5.1.0.RELEASE</version>

     </dependency>

     <!-- mybatis 依赖包 -->

     <!--mybatis jar包 -->

     <dependency>

       <groupId>org.mybatis</groupId>

       <artifactId>mybatis</artifactId>

       <version>3.4.6</version>

     </dependency>

     <!--  mybatis spring-->

     <dependency>

       <groupId>org.mybatis</groupId>

       <artifactId>mybatis-spring</artifactId>

       <version>1.3.2</version>

     </dependency>

     <!-- 连接数据库驱动的jar包 我这里使用的是 mariadb数据库的驱动包 -->

     <dependency>

       <groupId>org.mariadb.jdbc</groupId>

       <artifactId>mariadb-java-client</artifactId>

       <version>2.3.0</version>

     </dependency>

     <!-- 连接接池 c3p0 -->

     <dependency>

       <groupId>com.mchange</groupId>

       <artifactId>c3p0</artifactId>

       <version>0.9.5.2</version>

     </dependency>

     <!-- jstl jar包 -->

     <dependency>

       <groupId>javax.servlet</groupId>

       <artifactId>jstl</artifactId>

       <version>1.2</version>

     </dependency>

     <!-- 单元测试 -->

     <dependency>

       <groupId>junit</groupId>

       <artifactId>junit</artifactId>

       <version>4.11</version>

       <scope>test</scope>

     </dependency>

   </dependencies>

   <build>

     <finalName>SSM_demo</finalName>

     <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->

       <plugins>

         <plugin>

           <artifactId>maven-clean-plugin</artifactId>

           <version>3.0.0</version>

         </plugin>

         <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->

         <plugin>

           <artifactId>maven-resources-plugin</artifactId>

           <version>3.0.2</version>

         </plugin>

         <plugin>

           <artifactId>maven-compiler-plugin</artifactId>

           <version>3.7.0</version>

         </plugin>

         <plugin>

           <artifactId>maven-surefire-plugin</artifactId>

           <version>2.20.1</version>

         </plugin>

         <plugin>

           <artifactId>maven-war-plugin</artifactId>

           <version>3.2.0</version>

         </plugin>

         <plugin>

           <artifactId>maven-install-plugin</artifactId>

           <version>2.5.2</version>

         </plugin>

         <plugin>

           <artifactId>maven-deploy-plugin</artifactId>

           <version>2.8.2</version>

         </plugin>

       </plugins>

     </pluginManagement>

   </build>

 </project>

配置完成后

等待 jar包下载完成。

这些都是下载的jar包（这样pom.xml 文件算是配置完成了。）

接下来开始其他 xml文件的配置

main下面如果少一个 java 文件（我们手动新建）

java 文件变成蓝色的就可以了。

建立项目结构

开始配置 spring xml 和 spring mvc xml

在 main 目录里创建一个 resources 文件，然后将它标志成资源文件夹

在resources文件夹中新建一个 spring_root.xml 文件

spring_root文件的完整配置信息

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

     <!-- 扫描 service 包下面使用@Component/@Service/@Repository/@Controller 注解的类 将其实例化，放入容器中   -->

     <contxt:component-scan base-package="com.oukele.bookshop_ssm.service" />

     <!--创建数据源-->

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

         <!-- 数据库驱动 -->

         <property name="driverClass" value="org.mariadb.jdbc.Driver" />

         <!-- 数据库连接 -->

         <property name="jdbcUrl" value="jdbc:mariadb://localhost:3306/data_test" />

         <!-- 数据库用户名 -->

         <property name="user" value="oukele"/>

         <!-- 数据库密码 -->

         <property name="password" value="oukele"/>

     </bean>

     <!-- 配置mybatis  -->

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

         <!-- 数据源的实例化 -->

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

         <!-- 映射 DML 语法 -->

         <property name="mapperLocations" value="classpath:mapper/*.xml"/>

     </bean>

     <!-- 映射 数据访问层 ( dao ) 中的接口 -->

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

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

         <property name="basePackage" value="com.oukele.bookshop_ssm.dao"/>

     </bean>

 </beans>

spring_web文件的完整配置信息

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

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

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

     <!-- 扫描 控制层 (web) 下面 @Controller 注解的类 将其实例化，放入容器中 -->

     <contxt:component-scan base-package="com.oukele.bookshop_ssm.web"/>

     <!-- 启动 mvc 的常用注解 -->

     <mvc:annotation-driven/>

     <!--将所有的静态资源，交给 Servlet 处理-->

     <mvc:default-servlet-handler/>

     <!--配置 view 解析器-->

     <!-- 页面接受数据 -->

     <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">

         <property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />

         <property name="prefix" value="/WEB-INF/views/" />

         <property name="suffix" value=".jsp" />

     </bean>

 </beans>

在resources 文件夹新建一个包 ( 包名随意趣吧，有意义一些的)

然后再那个包里新建一个 xml文件用来映射 DML语法

BookMapper.xml 配置文件信息

 <?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">

 <!-- 映射 接口 IBookDao -->

 <mapper namespace="com.oukele.bookshop_ssm.dao.IBookDao">

     <!-- 这里的id 是 接口中的方法名  -->

     <select id="listAll" resultType="com.oukele.bookshop_ssm.entity.Book">

         select * from ssm_book

     </select>

 </mapper>

这里xml文件差不多配置完成了。

开始写代码啦。

(entity)实体类。

 package com.nf147.bookstore_ssm.entity;

 public class Book {

     private int bookid;

     private String name;

     private int cnt;

     public Book() {

     }

     public Book(String name, int cnt) {

         this.name = name;

         this.cnt = cnt;

     }

     public int getBookid() {

         return bookid;

     }

     public void setBookid(int bookid) {

         this.bookid = bookid;

     }

     public String getName() {

         return name;

     }

     public void setName(String name) {

         this.name = name;

     }

     public int getCnt() {

         return cnt;

     }

     public void setCnt(int cnt) {

         this.cnt = cnt;

     }

     @Override

     public String toString() {

         return "Book{" +

                 "bookid=" + bookid +

                 ", name='" + name + '\'' +

                 ", cnt=" + cnt +

                 '}';

     }

 }

(dao)数据访问层

 package com.oukele.bookshop_ssm.dao;

 import com.oukele.bookshop_ssm.entity.Book;

 import org.springframework.stereotype.Repository;

 import java.util.List;

 @Repository

 public interface IBookDao {

     List<Book> listAll();

 }

(service)服务层

 package com.oukele.bookshop_ssm.service;

 import com.oukele.bookshop_ssm.entity.Book;

 import java.util.List;

 public interface BookService {

     List<Book> listAll();

 }

 package com.oukele.bookshop_ssm.service;

 import com.oukele.bookshop_ssm.dao.IBookDao;

 import com.oukele.bookshop_ssm.entity.Book;

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

 import org.springframework.stereotype.Service;

 import java.util.List;

 @Service

 public class BookServiceTemp implements BookService {

 //    使用 dao 中的接口

     @Autowired

     private IBookDao bookDao;

     @Override

     public List<Book> listAll() {

         return bookDao.listAll();

     }

 package com.oukele.bookshop_ssm.web;

 import com.oukele.bookshop_ssm.entity.Book;

 import com.oukele.bookshop_ssm.service.BookServiceTemp;

 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 java.util.List;

 @Controller

 public class BookController {

     @Autowired

     private BookServiceTemp bookServiceTemp;

 //    请求url

     @RequestMapping(value = "/books")

     public ModelAndView getList(){

 //        页面的名字

         ModelAndView mv = new ModelAndView("list");

 //        获取数据

         List<Book> list = bookServiceTemp.listAll();

         mv.addObject("book",list);

         return mv;

     }

 }

(web)控制层

 package com.oukele.bookshop_ssm.web;

 import com.oukele.bookshop_ssm.entity.Book;

 import com.oukele.bookshop_ssm.service.BookService;

 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 java.util.List;

 @Controller

 public class BookController {

     @Autowired

     private BookService bookService;

 //    请求url

     @RequestMapping(value = "/books")

     public ModelAndView getList(){

 //        页面的名字

         ModelAndView mv = new ModelAndView("list");

 //        获取数据

         List<Book> list = bookService.listAll();

         mv.addObject("book",list);

         return mv;

     }

 }

jsp页面

 <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

 <%@ page contentType="text/html;charset=UTF-8" language="java"  isELIgnored="false" %>

 <html>

 <head>

     <title>Title</title>

 </head>

 <body>

 书籍列表:

 <br>

 <table>

     <tr>

         <th>编号</th>

         <th>书名</th>

         <th>数量</th>

     </tr>

     <tbody>

     <c:forEach items="${book}" var="books" >

         <tr>

             <td>${books.bookid}</td>

             <td>${books.name}</td>

             <td>${books.cnt}</td>

         </tr>

     </c:forEach>

     </tbody>

 </table>

 </body>

 </html>

项目结构：

配置 web.xml文件

完整的web.xml文件信息

 <!DOCTYPE web-app PUBLIC

  "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"

  "http://java.sun.com/dtd/web-app_2_3.dtd" >

 <web-app>

   <display-name>Archetype Created Web Application</display-name>

   <!--配置 Spring 容器-->

   <context-param>

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

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

   </context-param>

   <listener>

     <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>

   </listener>

   <!--配置 Spring mvc 容器-->

   <!--将所有请求，都交给Spring MVC 处理-->

   <servlet>

     <servlet-name>webs</servlet-name>

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

     <init-param>

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

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

     </init-param>

   </servlet>

   <!--将 请求 截取 转交给 webs -->

   <servlet-mapping>

     <servlet-name>webs</servlet-name>

     <url-pattern>/</url-pattern>

   </servlet-mapping>

 </web-app>

配置tomcat服务器，并启动。

介绍可能有点不全且有点乱。（所以查看源码是最快的。）

项目地址：https://github.com/oukele/ssm_demo

E-R流程图：https://www.processon.com/mindmap/5bac29eae4b015327af18db5

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