SSM框架整合新手教学式入门

作者: 南风向北zhy | 来源:发表于2020-11-10 13:53 被阅读0次

根据狂神大佬的教学项目整理笔记：
核心架构如下图：

在这里插入图片描述

分为步骤进行整合：
1.前期准备工作。（创建maven项目，导包，创建目录，创建数据库）

Mybatis 整合部分
1.1创建项目

在这里插入图片描述
1.2 添加web依赖

** 加粗样式
1.3连接数据库，创建表和数据

在这里插入图片描述

CREATE DATABASE `ssmbuild`;

USE `ssmbuild`;

DROP TABLE IF EXISTS `books`;

CREATE TABLE `books` (
                         `bookID` INT(10) NOT NULL AUTO_INCREMENT COMMENT '书id',
                         `bookName` VARCHAR(100) NOT NULL COMMENT '书名',
                         `bookCounts` INT(11) NOT NULL COMMENT '数量',
                         `detail` VARCHAR(200) NOT NULL COMMENT '描述',
                         KEY `bookID` (`bookID`)
) ENGINE=INNODB DEFAULT CHARSET=utf8;

INSERT  INTO `books`(`bookID`,`bookName`,`bookCounts`,`detail`)VALUES
(1,'Java',1,'从入门到放弃'),
(2,'MySQL',10,'从删库到跑路'),
(3,'Linux',5,'从进门到进牢');

1.4 添加项目依赖 pom.xml

<!--普通依赖-->
    <dependencies>
        <!--Junit-->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
        </dependency>
        <!--数据库驱动-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.47</version>
        </dependency>
        <!-- 数据库连接池 -->
        <dependency>
            <groupId>com.mchange</groupId>
            <artifactId>c3p0</artifactId>
            <version>0.9.5.2</version>
        </dependency>

        <!--Servlet - JSP -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>servlet-api</artifactId>
            <version>2.5</version>
        </dependency>
        <dependency>
            <groupId>javax.servlet.jsp</groupId>
            <artifactId>jsp-api</artifactId>
            <version>2.2</version>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>

        <!--Mybatis-->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.5.2</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>2.0.2</version>
        </dependency>

        <!--lombok-->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.16</version>
        </dependency>

        <!--Spring-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>5.1.9.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>5.1.9.RELEASE</version>
        </dependency>
    </dependencies>

    <!--静态文件-->

    <build>
        <resources>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.properties</include>
                    <include>**/*.xml</include>
                </includes>
                <filtering>false</filtering>
            </resource>
            <resource>
                <directory>src/main/resources</directory>
                <includes>
                    <include>**/*.properties</include>
                    <include>**/*.xml</include>
                </includes>
                <filtering>false</filtering>
            </resource>
        </resources>
    </build>

1.5 添加artifacts 依赖，新建lib文件，

在这里插入图片描述

添加，选中全部加入

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1.6 创建项目包结构和基本数据
com.zhy.pojo
com.zhy.controller
com.zhy.service
com.zhy.dao
新建 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>

</configuration>

新建 applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd">

</beans>

新建 database.properties

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/ssmbuild?useSSL=false&useUnicode=true&characterEncoding=utf8
jdbc.username=root
jdbc.password=123456

数据库mysql 8.0+ 需要注意

时区：serverTimezone=Asia/Shanghai
useSSL=false
1.7 编写mybatis配置

package com.zhy.pojo;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

@Data
@AllArgsConstructor
@NoArgsConstructor
public class Books {
    private  int bookID;
    private  String bookName;
    private  int bookCounts;
    private  String detail;
}

编写BookMapper 接口

package com.zhy.dao;

import com.zhy.pojo.Books;
import org.apache.ibatis.annotations.Param;

import java.awt.print.Book;
import java.util.List;

public interface BookMapper {
   /***
    * 新增一个books
    * @param books
    * @return
    */
   int addBoook(Books books);
   /***
    * 删除一个books
    * @param bookID
    * @return
    */
   int deleteBook(@Param("bookID") int  bookID);
   /***
    * 更新一个books
    * @param books
    * @return
    */
   int updateBook(Books books);
   /***
    * 根据id查询一个books
    * @param bookID
    * @return
    */
   Books queryBookByID(@Param("bookID") int  bookID);

   /***
    * 查询所有books
    * @return
    */
   List<Books> queryBookAll();
}

编写 BookMapper.xml

IDEA 编写数据库快捷用法
插入 ins
更新 upd
查询 sel
经验：如果没有提示数据库名字和表名可以参考如下设置：

在这里插入图片描述

<?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.zhy.dao.BookMapper">
    <insert id="addBoook" parameterType="Books">
        insert into ssmbuild.books (bookID, bookName, bookCounts, detail)
        values (#{bookID},#{bookName},#{bookCounts},#{detail});
    </insert>
    
    <delete id="deleteBook" parameterType="int" >
        delete  from  ssmbuild.books where bookID=#{bookID}
    </delete>
    
    <update id="updateBook" parameterType="Books">
        update ssmbuild.books
        set bookName = #{bookName} , bookCounts=#{bookCounts} ,detail=#{detail}
        where bookID=#{bookID};
    </update>

    <select id="queryBookByID" parameterType="int">
        select *
        from ssmbuild.books where bookID=#{bookID};
    </select>

    <select id="queryBookAll" resultType="Books">
        select *
        from ssmbuild.books;
    </select>
    
</mapper>

别忘了在 mybatis-config.xml 配置mapper

<?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>
        <setting name="logImpl" value="STDOUT_LOGGING"/>
    </settings>
    <typeAliases>
        <package name="com.zhy.pojo"/>
    </typeAliases>

    <mappers>
        <mapper class="com.zhy.dao.BookMapper"/>
    </mappers>
</configuration>

创建 BooksService

package com.zhy.service;

import com.zhy.pojo.Books;
import java.util.List;

public interface BooksService {
    /***
     * 新增一个books
     * @param books
     * @return
     */
    int addBoook(Books books);
    /***
     * 删除一个books
     * @param bookID
     * @return
     */
    int deleteBook( int  bookID);
    /***
     * 更新一个books
     * @param books
     * @return
     */
    int updateBook(Books books);
    /***
     * 根据id查询一个books
     * @param bookID
     * @return
     */
    Books queryBookByID( int  bookID);

    /***
     * 查询所有books
     * @return
     */
    List<Books> queryBookAll();
}

创建 BooksServiceImpl 业务层实现类

package com.zhy.service;

import com.zhy.dao.BookMapper;
import com.zhy.pojo.Books;

import java.util.List;
@Service
public class BooksServiceImpl implements  BooksService{
    /***
     * service 业务层 持有 dao层进行业务处理
     * service 可以使用dao的方法
     */
    private BookMapper bookMapper;

    /***
     *  set 方法提供spring 进行ioc注入
     * @param bookMapper
     */
    public void setBookMapper(BookMapper bookMapper) {
        this.bookMapper = bookMapper;
    }

    public int addBoook(Books books) {
        return bookMapper.addBoook(books);
    }

    public int deleteBook(int bookID) {
        return bookMapper.deleteBook(bookID);
    }

    public int updateBook(Books books) {
        return bookMapper.updateBook(books);
    }

    public Books queryBookByID(int bookID) {
        return bookMapper.queryBookByID(bookID);
    }

    public List<Books> queryBookAll() {
        return bookMapper.queryBookAll();
    }
}

============================Mybatis 配置基本结束=================================

Spring 整合 dao（mybatis）层

2.1 新建 spring-dao.xml

<?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
   http://www.springframework.org/schema/context/spring-context.xsd">
    <!--1.关联db配置文件 这样就相当于让spring 扫描里面的数据-->
    <context:property-placeholder location="classpath:database.properties"/>
    <!--2. 配置datasourse 连接池这边可以配置 c3p0 -->
    <bean id="dataScource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="${jdbc.driver}"/>
        <property name="jdbcUrl" value="${jdbc.url}"/>
        <property name="user" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
        <!-- c3p0连接池的私有属性 -->
        <property name="maxPoolSize" value="30"/>
        <property name="minPoolSize" value="10"/>
        <!-- 关闭连接后不自动commit -->
        <property name="autoCommitOnClose" value="false"/>
        <!-- 获取连接超时时间 -->
        <property name="checkoutTimeout" value="10000"/>
        <!-- 当获取连接失败重试次数 -->
        <property name="acquireRetryAttempts" value="2"/>
    </bean>
    <!--3 配置 sqlsessionFactory-->
    <bean id="sqlsessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataScource"/>
        <property name="configLocation" value="classpath:mybatis-config.xml"/>
    </bean>

    <!--4.配置动态扫描dao接口的包，实现动态注入到spring容器中-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="sqlSessionFactoryBeanName" value="sqlsessionFactory"/>
        <property name="basePackage" value="com.zhy.dao"
       </bean>

</beans>

Spring 整合 service 层

2.2 新建 spring-service.xml

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

    <!-- 扫描service相关的bean -->
    <context:component-scan base-package="com.zhy.service" />

    <!--BookServiceImpl注入到IOC容器中-->
    <bean id="BooksServiceImpl" class="com.zhy.service.BooksServiceImpl">
        <property name="bookMapper" ref="bookMapper"/>
     </bean>

    <!-- 配置事务管理器 -->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <!-- 注入数据库连接池 -->
        <property name="dataSource" ref="dataScource" />
    </bean>

</beans>

记得在 applicationContext.xml 导入关联

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd">

    <import resource="spring-dao.xml"/>
    <import resource="spring-service.xml"/>
    <import resource="spring-mvc.xml"/>


</beans>

==================Spring 整合基本结束======================

SpringMVC层
3.1 web.xml


    <!--DispatcherServlet-->
    <servlet>
        <servlet-name>DispatcherServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <!--一定要注意:我们这里加载的是总的配置文件，之前被这里坑了！-->
            <param-value>classpath:applicationContext.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>

    <!--encodingFilter-->
    <filter>
        <filter-name>encodingFilter</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>encodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

    <!--Session过期时间-->
    <session-config>
        <session-timeout>15</session-timeout>
    </session-config>

3.2 新建spring-mvc.xml

<?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"
       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
   https://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <!-- 配置SpringMVC -->
    <!-- 1.开启SpringMVC注解驱动 -->
    <mvc:annotation-driven />
    <!-- 2.静态资源默认servlet配置-->
    <mvc:default-servlet-handler/>

    <!-- 3.配置jsp 显示ViewResolver视图解析器 -->
    <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>

    <!-- 4.扫描web相关的bean -->
    <context:component-scan base-package="com.zhy.controller" />

</beans>

3.3 最后添加配置依赖关系 applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd">

    <import resource="classpath:spring-service.xml"/>
    <import resource="classpath:spring-dao.xml"/>
    <import resource="classpath:spring-mvc.xml"/>
</beans>

最后编写controler

package com.zhy.controller;

import com.zhy.pojo.Books;
import com.zhy.service.BooksService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

import java.util.List;

@Controller
@RequestMapping("/book")
public class BookController {

    @Autowired
    @Qualifier("BooksServiceImpl")
    private BooksService bookService;

    @RequestMapping("/allBook")
    public String list(Model model) {
        List<Books> list = bookService.queryBookAll();
        model.addAttribute("list", list);
        return "allBook";
    }
}

最后配置几个页面进行测试 allBook.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
${list}
</body>
</html>

配置tomcat 进行测试

在这里插入图片描述
浏览器输入 http://localhost:8081/book/allBook
[图片上传失败...(image-dbbcaa-1604987605888)]
测试完成

至此简单的SSM 架构搭建完毕，后面都是页面和义务代码，我直接贴了

1 index.jsp 完整页面

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>
<!DOCTYPE HTML>
<html>
<head>
   <title>首页</title>
   <style type="text/css">
       a {
           text-decoration: none;
           color: black;
           font-size: 18px;
      }
       h3 {
           width: 180px;
           height: 38px;
           margin: 100px auto;
           text-align: center;
           line-height: 38px;
           background: deepskyblue;
           border-radius: 4px;
      }
   </style>
</head>
<body>

<h3>
   <a href="${pageContext.request.contextPath}/book/allBook">点击进入列表页</a>
</h3>
</body>
</html>

1. 书籍列表页面 allbook.jsp

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
   <title>书籍列表</title>
   <meta name="viewport" content="width=device-width, initial-scale=1.0">
   <!-- 引入 Bootstrap -->
   <link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>

<div class="container">

   <div class="row clearfix">
       <div class="col-md-12 column">
           <div class="page-header">
               <h1>
                   <small>书籍列表 —— 显示所有书籍</small>
               </h1>
           </div>
       </div>
   </div>

   <div class="row">
       <div class="col-md-4 column">
           <a class="btn btn-primary" href="${pageContext.request.contextPath}/book/toAddBook">新增</a>
       </div>
   </div>

   <div class="row clearfix">
       <div class="col-md-12 column">
           <table class="table table-hover table-striped">
               <thead>
               <tr>
                   <th>书籍编号</th>
                   <th>书籍名字</th>
                   <th>书籍数量</th>
                   <th>书籍详情</th>
                   <th>操作</th>
               </tr>
               </thead>

               <tbody>
               <c:forEach var="book" items="${requestScope.get('list')}">
                   <tr>
                       <td>${book.getBookID()}</td>
                       <td>${book.getBookName()}</td>
                       <td>${book.getBookCounts()}</td>
                       <td>${book.getDetail()}</td>
                       <td>
                           <a href="${pageContext.request.contextPath}/book/toUpdateBook?id=${book.getBookID()}">更改</a> |
                           <a href="${pageContext.request.contextPath}/book/del/${book.getBookID()}">删除</a>
                       </td>
                   </tr>
               </c:forEach>
               </tbody>
           </table>
       </div>
   </div>
</div>

1. BookController 类编写

package com.zhy.controller;

import com.zhy.pojo.Books;
import com.zhy.service.BookService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;

import java.util.List;

@Controller
@RequestMapping("/book")
public class BookController {
    @Autowired
    @Qualifier("BookServiceImpl")
    private BookService bookService;


    @RequestMapping("/allBook")
    public  String  list(Model model){
        final Books books1 = bookService.queryBookById(1);
        System.out.println(books1);
        final List<Books> list = bookService.queryAllBook();
        for (Books books : list) {
            System.out.println(books);
        }
        model.addAttribute("list",list);
        return "allBook";

    }

    @RequestMapping("/toAddBook")
    public String toAddPaper() {
        return "addBook";
    }

    @RequestMapping("/addBook")
    public String addPaper(Books books) {
        System.out.println(books);
        bookService.addBook(books);
        return "redirect:/book/allBook";
    }

    @RequestMapping("/toUpdateBook")
    public String toUpdateBook(Model model, int id) {
        Books books = bookService.queryBookById(id);
        System.out.println(books);
        model.addAttribute("book",books );
        return "updateBook";
    }

    @RequestMapping("/updateBook")
    public String updateBook(Model model, Books book) {
        System.out.println(book);
        bookService.updateBook(book);
        Books books = bookService.queryBookById(book.getBookID());
        model.addAttribute("books", books);
        return "redirect:/book/allBook";
    }


    @RequestMapping("/del/{bookId}")
    public String deleteBook(@PathVariable("bookId") int id) {
        bookService.deleteBookById(id);
        return "redirect:/book/allBook";
    }

}

4 updateBook.jsp

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>修改信息</title>
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <!-- 引入 Bootstrap -->
    <link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<div class="container">

    <div class="row clearfix">
        <div class="col-md-12 column">
            <div class="page-header">
                <h1>
                    <small>修改信息</small>
                </h1>
            </div>
        </div>
    </div>

    <form action="${pageContext.request.contextPath}/book/updateBook" method="post">
        <input type="hidden" name="bookID" value="${book.getBookID()}"/>
        书籍名称：<input type="text" name="bookName" value="${book.getBookName()}"/>
        书籍数量：<input type="text" name="bookCounts" value="${book.getBookCounts()}"/>
        书籍详情：<input type="text" name="detail" value="${book.getDetail() }"/>
        <input type="submit" value="提交"/>
    </form>

</div>

至此完整的项目编写完毕。收获满满~这个项目我练习了两遍，因为狂神说这是基础入门，一定要熟练掌握基础。

这是我第一次练习的代码仅供参考，和上面截图有点不一样：
练习项目 https://gitee.com/zhyazaq/sbmbuild

想学习后台的可以看https://www.bilibili.com/read/cv5702420 狂神教学，一起学习一起进步~撒

SSM框架整合新手教学式入门

Mybatis 整合部分

Spring 整合 dao（mybatis）层

Spring 整合 service 层

至此简单的SSM 架构搭建完毕，后面都是页面和义务代码，我直接贴了

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SSM框架整合 新手教学式入门

Mybatis 整合部分

Spring 整合 dao（mybatis） 层

Spring 整合 service 层

至此简单的SSM 架构搭建完毕，后面都是页面和义务代码，我直接贴了

相关文章

网友评论

延伸阅读

深度阅读

栏目导航

热点阅读

SSM框架整合新手教学式入门

Spring 整合 dao（mybatis）层