idea整合SSM(书籍管理Demo)

整合SSM

环境

idea
Maven 3.6
Tomcat 9
MySql 5.7.29

要求

需要熟练掌握MySQL数据库，Spring，JavaWeb及MyBatis知识，简单的前端知识

数据库环境

创建一个存放书籍数据的数据库表

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');

基本环境搭建

1、新建一Maven项目！

ssmbuild
添加web的支持

2、导入相关的pom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>

   <!--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>

3、Maven资源过滤设置

在pom文件最后导入

    <!--静态资源导出问题-->
    <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>

4、建立基本结构和配置框架！

com.zt.pojo
com.zt.dao
com.zt.service
com.zt.controller
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>

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>

Mybatis层编写

1、数据库配置文件

database.properties

#如果使用MySQL8.0+，驱动为 com.mysql.cj.jdbc.Driver
jdbc.driver=com.mysql.jdbc.Driver
#如果使用MySQL8.0+，url还需要加一个时区的配置  serverTimezone=Asia/Shanghai
jdbc.url=jdbc:mysql://localhost:3307/ssmbuild?useSSL=false&useUnicode=true&characterEncoding=utf8
jdbc.username=root
jdbc.password=root

2、IDEA关联数据库

3、编写MyBatis的核心配置文件

<?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>

    <!-- 配置数据源，交给spring去做 -->

    <!-- 起别名 -->
    <typeAliases>
        <package name="com.zt.pojo"/>
    </typeAliases>

    <!-- 注册Mapper -->
    <mappers>
        <!-- 指定类名 -->
        <!--<mapper class="com.zt.dao.BookMapper"/>-->
        <!-- 指定路径 -->
        <mapper resource="com/zt/dao/BookMapper.xml"/>
    </mappers>
</configuration>

4、编写数据库对应的实体类

com.zt.pojo.Books

package com.zt.pojo;

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

import java.io.Serializable;
@Data
@AllArgsConstructor
@NoArgsConstructor
public class Books implements Serializable {

    private Integer bookId;
    private String bookName;
    private Integer bookCounts;
    private String detail;

}

在这里使用了lombok插件，使用前需要在idea中先添加lombok插件，并在pom文件中添加依赖

        <!--lombok-->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.16.10</version>
        </dependency>

5、编写Dao层的 Mapper接口

BookMapper

package com.zt.dao;

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

import java.util.List;

public interface BookMapper {
    //增加一本书
    int addBook(Books books);

    //删除一本书
    int deleteBookById(@Param("bookId") int id);

    //更新一本书
    int updateBook(Books books);

    //查询一本书
    Books queryBooksById(@Param("bookId") int id);

    //查询所有的书
    List<Books> queryAllBooks();

    //根据书名查询书  模糊查询
    List<Books> queryBookByName(@Param("bookName") String name);
}

6、编写接口对应的 Mapper.xml 文件(需要导入MyBatis的包)

BookMapper.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.zt.dao.BookMapper">
    <insert id="addBook" parameterType="Books">
        insert into ssmbuild.books (bookName, bookCounts, detail)
        values (#{bookName}, #{bookCounts}, #{detail});
    </insert>

    <delete id="deleteBookById" 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>
    <!--更新Book-->

    <select id="queryBooksById" parameterType="int" resultType="Books">
        select *
        from ssmbuild.books
        where bookID = #{bookId};
    </select>
    <select id="queryAllBooks" resultType="Books">
        select *
        from ssmbuild.books;
    </select>
    <select id="queryBookByName" resultType="Books">
        select *
        from ssmbuild.books
        where bookName like #{bookName}"%";
    </select>

</mapper>

7、编写Service层的接口和实现类

接口：

BookService

package com.zt.service;

import com.zt.pojo.Books;

import java.util.List;

public interface BookService {
    //增加一本书
    int addBook(Books books);

    //删除一本书
    int deleteBookById(int id);

    //更新一本书
    int updateBook(Books books);

    //查询一本书
    Books queryBooksById(int id);

    //查询所有的书
    List<Books> queryAllBooks();

    //根据书名查询书  模糊查询
    List<Books> queryBookByName(String name);
}

实现类：

BookServiceImpl

package com.zt.service;

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

import java.util.List;

public class BookServiceImpl implements BookService {

    //service调用dao层
    private BookMapper bookMapper;

    //set方法，spring方便管理
    public void setBookMapper(BookMapper bookMapper) {
        this.bookMapper = bookMapper;
    }

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

    public int deleteBookById(int id) {
        return bookMapper.deleteBookById(id);
    }

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

    public Books queryBooksById(int id) {
        return bookMapper.queryBooksById(id);
    }

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

    public List<Books> queryBookByName(String name) {
        return bookMapper.queryBookByName(name);
    }
}

到此，底层需求操作编写完毕！

Spring层

1、配置Spring整合MyBatis

这里数据源使用c3p0连接池

2、编写Spring整合Mybatis的相关的配置文件

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
       https://www.springframework.org/schema/context/spring-context.xsd">

    <!-- 1.关联数据库配置文件 -->
    <context:property-placeholder location="classpath:database.properties"/>
    <!-- 2.数据库连接池
     dbcp:半自动化操作，不能自动连接
     c3p0:自动化操作(自动化的加载配置文件，并且可以自动设置到对象中)
     durid:hikari
     -->
    <bean id="dataSource" 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对象 -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!-- 注入数据库连接池 -->
        <property name="dataSource" ref="dataSource"/>
        <!-- 配置MyBaties全局配置文件:mybatis-config.xml -->
        <property name="configLocation" value="classpath:mybatis-config.xml"/>
    </bean>


    <!-- 4.配置扫描Dao接口包，动态实现Dao接口注入到spring容器中 -->
    <!--解释 ：https://www.cnblogs.com/jpfss/p/7799806.html-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!-- 注入sqlSessionFactory -->
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
        <!-- 给出需要扫描Dao接口包 -->
        <property name="basePackage" value="com.zt.dao"/>
    </bean>

</beans>

3、Spring整合service层

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
       https://www.springframework.org/schema/context/spring-context.xsd">

    <!-- 1.扫描service相关的bean (个人理解为用注解配置的bean)-->
    <context:component-scan base-package="com.zt.service"/>

    <!-- 2.BookServiceImpl注入到IOC容器中     将我们的所有业务类，注入到spring中 可以通过配置或者注解实现 这里用配置的方式-->
    <bean id="BookServiceImpl" class="com.zt.service.BookServiceImpl">
        <property name="bookMapper" ref="bookMapper"/>
    </bean>

    <!-- 3.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="dataSource"/>
    </bean>

    <!-- 4.AOP事务支持 -->

</beans>

Spring层搞定，Spring就是一个大杂烩，一个容器!

SpringMVC层

1、web.xml

<?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">
    <!-- DispatchServlet -->
    <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:applicationContext.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>springmvc</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

    <!-- 乱码过滤 -->
    <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 安全 -->
    <session-config>
        <session-timeout>15</session-timeout>
    </session-config>
</web-app>

2、springmvc配置文件

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

    <!-- 1.注解驱动 -->
    <mvc:annotation-driven/>
    <!-- 2.静态资源过滤 -->
    <mvc:default-servlet-handler/>
    <!-- 3.包扫描 controller -->
    <context:component-scan base-package="com.zt.controller"/>
    <!-- 4.视图解析器 -->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp/"/>
        <property name="suffix" value=".jsp"/>
    </bean>

</beans>

3、Spring配置整合文件

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

配置文件，暂时结束！

Controller 和视图层编写

1、查询全部书籍

queryAllBook

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

    //controller调用service层

    @Autowired
    @Qualifier("BookServiceImpl")
    private BookService bookService;

    //查询全部书籍，跳转到一个书籍展示页面
    @RequestMapping("/allBook")
    public String queryAllBook(Model model) {

        List<Books> books = bookService.queryAllBooks();

        model.addAttribute("list", books);

        return "allBook";
    }
}

2、编写首页

index.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
  <head>
    <title>首页</title>
  </head>
  <body>
  <h3>
    <a href="${pageContext.request.contextPath}/book/allBook">进入书籍页面</a>
  </h3>
  </body>
</html>

3、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>展示书籍</title>
    <link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
    <style>
        a {
            text-decoration: none;
        }
    </style>
</head>

<body>
<div class="container">
    <div class="row">
        <h1 class="page-header">展示书籍</h1>
    </div>
    <div class="row">
        <div class="col-md-6">
            <a href="${pageContext.request.contextPath}/book/toAddBook">
                <button class="btn btn-primary">新增书籍</button>
            </a>
        </div>
        <div class="col-md-6">
            <form class="form-inline pull-right" action="${pageContext.request.contextPath}/book/queryBookByName"
                  method="post">
                <div class="form-group">
                    <input type="text" name="name" class="form-control" placeholder="请输入书籍名称">
                </div>
                <button type="submit" class="btn btn-primary">查询</button>
            </form>
        </div>
    </div>
    <div class="row">
        <table class="table table-hover table-striped">
            <thead>
            <tr>
                <th>书籍名称</th>
                <th>书籍编号</th>
                <th>书籍数量</th>
                <th>书籍描述</th>
                <th>操作</th>
            </tr>
            </thead>
            <tbody>
            <c:forEach var="book" items="${list}">
                <tr>
                    <td>${book.bookName}</td>
                    <td>${book.bookId}</td>
                    <td>${book.bookCounts}</td>
                    <td>${book.detail}</td>
                    <td>
                        <a href="${pageContext.request.contextPath}/book/toUpdateBook?id=${book.bookId}">
                            <button class="btn btn-warning">修改</button>
                        </a>
                        <a href="${pageContext.request.contextPath}/book/deleteBook/${book.bookId}">
                            <button class="btn btn-danger">删除</button>
                        </a>
                    </td>
                </tr>
            </c:forEach>
            </tbody>
        </table>
    </div>
</div>
</body>
</html>

4、添加书籍

点击添加按钮跳转到添加书籍页面

toAddBook

//点击新增书籍，跳转到新增书籍页面
    @RequestMapping("/toAddBook")
    public String toAddBook(){
        return "addBook";
    }

添加书籍页面点击提交，重定向到展示所有书籍的页面

addBook

    //添加书籍
    @RequestMapping("/addBook")
    public String addBook(Books book){
        System.out.println("addBook==>"+book);
        bookService.addBook(book);
        //重定向到@RequestMapping("/allBook")
        return "redirect:/book/allBook";
    }

编写添加书籍页面

addBook.jsp

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>添加书籍</title>
    <link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>

<div class="container">
    <div class="row">
        <h1 class="page-header">添加书籍</h1>
    </div>
    <div class="row">
        <form action="${pageContext.request.contextPath}/book/addBook" method="post">
            <div class="form-group">
                <label>书籍名称</label>
                <input type="text" name="bookName" class="form-control" required>
            </div>
            <div class="form-group">
                <label>书籍数量</label>
                <input type="number" name="bookCounts" class="form-control" required>
            </div>
            <div class="form-group">
                <label>书籍描述</label>
                <input type="text" name="detail" class="form-control" required>
            </div>
            <div style="text-align: center">
                <button type="submit" class="btn btn-Success">提交</button>
            </div>
        </form>
    </div>
</div>
</body>
</html>

5、修改书籍

点击修改，跳转到修改书籍页面

toUpdateBook

    //点击修改，跳转到修改书籍页面
    @RequestMapping("/toUpdateBook")
    public String toUpdateBook(int id, Model model){
        Books books = bookService.queryBooksById(id);
        model.addAttribute("book",books);
        return "updateBook";
    }

修改书籍页面点击修改

updateBook

 //修改书籍
    @RequestMapping("/updateBook")
    public String updateBook(Books book){
        System.out.println("updateBook==>"+book);
        bookService.updateBook(book);
        return "redirect:/book/allBook";
    }

编辑修改书籍页面

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>修改书籍</title>
    <link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>

<div class="container">
    <div class="row">
        <h1 class="page-header">修改书籍</h1>
    </div>
    <div class="row">
        <form action="${pageContext.request.contextPath}/book/updateBook" method="post">
            <input hidden name="bookId" value="${book.bookId}">
            <div class="form-group">
                <label>书籍名称</label>
                <input type="text" name="bookName" value="${book.bookName}" class="form-control" required>
            </div>
            <div class="form-group">
                <label>书籍数量</label>
                <input type="number" name="bookCounts" value="${book.bookCounts}" class="form-control" required>
            </div>
            <div class="form-group">
                <label>书籍描述</label>
                <input type="text" name="detail" value="${book.detail}" class="form-control" required>
            </div>
            <div style="text-align: center">
                <button type="submit" class="btn btn-Success">提交</button>
            </div>
        </form>
    </div>
</div>
</body>
</html>

6、删除书籍

点击删除按钮，删除一条数据

deleteBook

    //点击删除按钮，删除一条数据
    @RequestMapping("/deleteBook/{bookId}")
    public String deleteBook(@PathVariable("bookId") int id){
        bookService.deleteBookById(id);
        return "redirect:/book/allBook";
    }

这里使用了RestFull风格传参

7、查询书籍

点击查询按钮，查询数据

模糊查询

queryBookByName

    //点击查询按钮，查询数据
    @RequestMapping("/queryBookByName")
    public String queryBookByName(String name,Model model){
        List<Books> books = bookService.queryBookByName(name);
            model.addAttribute("list",books);
            return "allBook";
    }
}

到此，书籍的增删改查基本功能实现。

启动Tomcat前记得

进入项目管理(Project Structure)->Artifacts->WEB-INF

新建一个lib文件夹，把依赖导入

引用：狂神说

posted @ 2020-10-16 16:23 GodTao 阅读(273) 评论(0) 收藏举报

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