springMVC阶段性学习--书籍管理

 

 

 

 

 

1、前情提要：

注意事项：

　　①将maven项目添加web框架

 

 

 

　　②项目结构新建lib包导入所有依赖（此步请在pom.cml导入依赖后完成）

 

 

　　 ③配置Tomcat

 

 

 

　　④项目结构概览

　　⑤数据库

 

 

2、文件配置

　　2.1 pom.xml   配置依赖

<?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.meng</groupId>
    <artifactId>springmvc-ssm-mybatis</artifactId>
    <version>1.0-SNAPSHOT</version>

    <dependencies>
        <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>8.0.21</version>
        </dependency>
        <!--数据库连接池-->
        <dependency>
            <groupId>com.mchange</groupId>
            <artifactId>c3p0</artifactId>
            <version>0.9.5.3</version>
        </dependency>
        <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>2.2.1-b03</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>3.5.5</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>2.0.5</version>
        </dependency>
        <!--spring-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>5.2.7.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>5.2.8.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.12</version>
        </dependency>
    </dependencies>
    <!--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>


</project>

　　2.2 database.properties （配置mysql）

jdbc.driver=com.mysql.cj.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/ssmbuild?serverTimezone=Asia/Shanghai&useSSL=true&useUnicode=true&characterEncoding=utf8&userSSL=false&serverTimezone=GMT%2B8
jdbc.username=root
jdbc.password=123456

　　2.3 mybatis-config.xml （整合mybatis映射mysql）

<?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>

    <typeAliases>
        <package name="com.meng.pojo"/>
    </typeAliases>

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

　　2.4 spring-dao.xml (持久层dao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">
    <!-- 配置整合mybatis -->
    <!-- 1.关联数据库文件 -->
    <context:property-placeholder  location="classpath:database.properties"/>
    <!-- 2.数据库连接池 -->
    <!--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（自动的加载配置文件 并且设置到对象里面）-->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <!-- 配置连接池属性 -->
        <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.meng.dao"/>
    </bean>
</beans>

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

    <!--注解驱动-->
    <mvc:annotation-driven/>
    <!--静态资源过滤-->
    <mvc:default-servlet-handler/>
    <!--扫描包-->
    <context:component-scan base-package="com.meng.controller"/>
    <!--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>

　　2.6 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">


    <!-- 扫描service相关的bean -->
    <context:component-scan base-package="com.meng.service" />
    <!--BookServiceImpl注入到IOC容器中-->
    <bean id="BookServiceImpl" class="com.meng.service.BookServiceImpl">
        <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="dataSource" />
    </bean>
</beans>

　　2.7 applicationContext.xml (扫描配置入容器)

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

</beans>

　　2.8 /WEB-INF/web.xml 文件配置

<?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">
    <!--DispatchService-->
    <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-config>
        <session-timeout>15</session-timeout>
    </session-config>
</web-app>

 

 3、dao层

　　3.1 BookMapper

package com.meng.dao;

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

import java.util.List;

public interface BookMapper {

    int addBook(Books books);
    //@Param用于传递参数，从而可以与SQL中的的字段名相对应
    int deleteBookById(@Param("bookID") int id);

    int updateBook(Books books);

    Books queryBookById(@Param("bookID") int id);

    List<Books> queryAllBook();

    Books queryBookByName(String bookName);
}

　　3.2 BookMapper.xml 配置 （执行数据库操作）

<?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.meng.dao.BookMapper">

    <insert id="addBook" parameterType="Books">
        insert into books(bookName,bookCounts,detail) value (#{bookName},#{bookCounts},#{detail})
    </insert>

    <delete id="deleteBookById" parameterType="int" >
        delete from books where bookID=#{bookID}
    </delete>

    <update id="updateBook" parameterType="Books">
        update books set bookName = #{bookName},bookCounts = #{bookCounts},detail = #{detail} where bookID=#{bookID}
    </update>
    
    <select id="queryBookById" resultType="Books">
        select * from books where bookID = #{bookID}
    </select>

    <select id="queryAllBook"  resultType="Books">
        SELECT * FROM books
    </select>

    <select id="queryBookByName" resultType="Books" >
        select * from books where bookName = #{bookName}
    </select>

</mapper>

4、pojo层

　　Books类    

package com.meng.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;
}

5、service层

　　5.1 接口 BookService

package com.meng.service;

import com.meng.pojo.Books;
import org.springframework.stereotype.Service;

import java.util.List;
@Service
public interface BookService {
    //增加Book
    int addBook(Books books);
    //根据id删除Book
    int deleteBookById( int id);
    //更新一个Book
    int updateBook(Books books);
    //根据id查询返回一个Book
    Books queryBookById(int id);
    //查询所有Book返回到list集合中
    List<Books> queryAllBook();

    Books queryBookByName(String bookName);
}

　　5.2 实现类 BookServiceImpl  （代理层代理数据库操作）

package com.meng.service;

import com.meng.dao.BookMapper;
import com.meng.pojo.Books;
import org.springframework.beans.factory.annotation.Autowired;

import java.util.List;

public class BookServiceImpl implements BookService {
    @Autowired
    //service层调用dao层：组合dao层
    private BookMapper bookMapper;

    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 queryBookById(int id) {
        return bookMapper.queryBookById(id);
    }

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

    public Books queryBookByName(String bookName){
        return bookMapper.queryBookByName(bookName);
    }
}

6、controller层

　　BookController类   （主要面向前端强求）

package com.meng.controller;

import com.meng.pojo.Books;
import com.meng.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.awt.print.Book;
import java.util.ArrayList;
import java.util.List;

@Controller
@RequestMapping("/book")
public class BookController {
    @Autowired
    @Qualifier("BookServiceImpl")
    private BookService bookService;
//    查询全部书籍返货页面
    @RequestMapping("/allBook")
    public String list(Model model){
        List<Books> list =bookService.queryAllBook();
        model.addAttribute("list",list);
        return "allBook";
    }

    //增加书籍页面
    @RequestMapping("/toAddBook")
    public String toAddPaper(){
        return "addBook";
    }
    //添加书籍请求
    @RequestMapping("/addBook")
    public String addBook(Books books){
        System.out.println("addBook===>"+books);
        bookService.addBook(books);
        //添加书籍之后重定向回到aaBook页面
        return "redirect:/book/allBook";
    }

    //跳转到修改页面
    @RequestMapping("/toUpdate")
    public String toUpdatePaper(int id,Model model){
        Books books = bookService.queryBookById(id);
        model.addAttribute("QBook",books);
        System.out.println(id);
        return "updateBook";
    }

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

    //删除书籍
    @RequestMapping("/deleteBookById/{bookID}")
    public String deleteBookById(@PathVariable("bookID") int id){
        bookService.deleteBookById(id);
        return "redirect:/book/allBook";
    }

    //书籍查询
    @RequestMapping("/queryBookByName")
    public String queryBook(String queryBookName,Model model){
        System.out.println("查询书籍："+queryBookName);
        Books books = bookService.queryBookByName(queryBookName);
        List<Books> list = new ArrayList<Books>();
        list.add(books);
        if (books==null){
            list = bookService.queryAllBook();
            model.addAttribute("error","没有找到书籍！");
        }
        model.addAttribute("list",list);
        return "allBook";
    }


}

7、前端jsp页面

　　7.1 欢迎页 index.jsp

<%--
  Created by IntelliJ IDEA.
  User: MJZ
  Date: 2020/8/13
  Time: 10:09
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
  <head>
    <style type="text/css">
      html{height: 100%;}
      body{
        background-image: url("11.jpg");
        background-size: 100% 100%;
        padding: 0;
        margin: 0;
      }
    </style>
    <title>首页</title>
    <style>
      a{
        text-decoration: none;
        color: black;
        font-size: 18px;
      }
      h3{
        width: 180px;
        height: 30px;
        margin: 100px auto;
        text-align: center;
        line-height: 30px;
        background: deepskyblue;
        border-radius: 10px;
      }
    </style>
  </head>
  <body>
  <h3>
    <%--${pageContext.request.contextPath}取绝对地址--%>
    <a href="${pageContext.request.contextPath}/book/allBook">进入书籍界面</a>
  </h3>
  </body>
</html>

　　7.2 /WEB-INF/jsp包下的addBook.jsp

<%--
  Created by IntelliJ IDEA.
  User: MJZ
  Date: 2020/8/13
  Time: 10:09
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
  <head>
    <style type="text/css">
      html{height: 100%;}
      body{
        background-image: url("11.jpg");
        background-size: 100% 100%;
        padding: 0;
        margin: 0;
      }
    </style>
    <title>首页</title>
    <style>
      a{
        text-decoration: none;
        color: black;
        font-size: 18px;
      }
      h3{
        width: 180px;
        height: 30px;
        margin: 100px auto;
        text-align: center;
        line-height: 30px;
        background: deepskyblue;
        border-radius: 10px;
      }
    </style>
  </head>
  <body>
  <h3>
    <%--${pageContext.request.contextPath}取绝对地址--%>
    <a href="${pageContext.request.contextPath}/book/allBook">进入书籍界面</a>
  </h3>
  </body>
</html>

　　7.3 /WEB-INF/jsp包下的allBook.JSP

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%--
  Created by IntelliJ IDEA.
  User: MJZ
  Date: 2020/8/13
  Time: 11:09
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
    <title>书籍展示</title>
    <div class="container">

        <div class="row-clearfix">
            <div class="col-md-12 colum">
                <div class="page-header">
                    <h1>
                        <small>书籍列表</small>
                    </h1>
                </div>
            </div>
            <div class="row">
                <div class="col-md-4 colum">
                    <a class="btn btn-primary"  href="${pageContext.request.contextPath}/book/toAddBook">新增书籍</a>
                    <a class="btn btn-primary"   href="${pageContext.request.contextPath}/book/allBook">全部书籍</a>
                </div>
                <div class="col-md-4 colum"></div>
                <div class="col-md-4 colum">
                    <form action="${pageContext.request.contextPath}/book/queryBookByName" method="get" class="form-inline" style="float:right">
                        <input type="submit" value="查询" class="btn btn-primary">
                        <input type="text" name="queryBookName" class="form-control" placeholder="请输入书籍名称">
                    </form>
                </div>
            </div>
        </div>
        <div class="row clearfix">
            <div class="col-md-12 colum">
                <table class="table table-hover table-striped">
                    <thead>
                        <tr>
                            <th>书籍编号</th>
                            <th>书籍名称</th>
                            <th>书籍数量</th>
                            <th>书籍详情</th>
                            <th>操作</th>
                        </tr>
                    </thead>
                    <tbody>
                        <c:forEach var="book" items="${list}">
                            <tr>
                                <td>${book.bookID}</td>
                                <td>${book.bookName}</td>
                                <td>${book.bookCounts}</td>
                                <td>${book.detail}</td>
                                <td>
                                    <a href="${pageContext.request.contextPath}/book/toUpdate?id=${book.bookID}">修改</a>
                                    &nbsp; | &nbsp;
                                    <a href="${pageContext.request.contextPath}/book/deleteBookById/${book.bookID}">删除</a>
                                </td>
                            </tr>
                        </c:forEach>
                    </tbody>
                </table>
            </div>
        </div>
    </div>
</head>
<body>
<h1></h1>
</body>
</html>

　　7.4 /WEB-INF/jsp包下的updateBook.JSP

<%--
  Created by IntelliJ IDEA.
  User: MJZ
  Date: 2020/8/13
  Time: 16:23
  To change this template use File | Settings | File Templates.
--%>
<%@ 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-clearfix">
        <div class="col-md-12 colum">
            <div class="page-header">
                <h1>
                    <small>修改书籍</small>
                </h1>
            </div>
        </div>
    </div>
    <form action="${pageContext.request.contextPath}/book/update" method="post">
        <%--容易出现的问题：更新需要依据id，但是id没有传回后台，所以更新不了，sql执行不了--%>
        <%--使用隐藏域传id--%>
        <input type="hidden" name="bookID" value="${QBook.bookID}">
        <div class="form-group">
            <label>书籍名称</label>
            <input type="text" name="bookName" class="form-control" value="${QBook.bookName}" required>
        </div>
        <div class="form-group">
            <label>书籍数量</label>
            <input type="text" name="bookCounts" class="form-control" value="${QBook.bookCounts}" required>
        </div>
        <div class="form-group">
            <label>书籍详情</label>
            <input type="text" name="detail" class="form-control" value="${QBook.detail}" required>
        </div>
        <div class="from-group">
            <input type="submit" class="form-control" value="修改">
        </div>
    </form>
</div>
</body>
</html>