SSM整合（狂神版）

缺乏、安全感 2021-06-10 20:40 583阅读 0赞

### SSM整合 ###

*  整体项目结构
 *  数据库环境
 *  环境依赖
 *   *  pom.xml
     *  Maven资源过滤设置
 *  建立基本结构
 *   *  mybatis-config.xml
     *  applicationContext.xml
 *  Mybatis层编写
 *   *  数据库配置文件 :jdbc.properties
     *  MyBatis的核心配置文件
     *  编写数据库对应的实体类
     *  编写Dao层的 Mapper接口
     *  编写接口对应的 Mapper.xml 文件。需要导入MyBatis的包
     *  编写Service层的接口和实现类
     *   *  BookService 接口
     *  BookServiceImpl实现类
 *  Spring层
 *   *  Spring整合Mybatis的相关的配置文件 spring-dao.xml
     *   *  Druid版
         *  c3p0版
     *  spring整合service层
 *  SpringMVC层
 *   *  web.xml
     *  spring-mvc.xml
     *  Spring配置整合文件，applicationContext
     *  配置日志
 *  Controller 和 视图层编写
 *   *  首页
     *  书籍列表页
     *  添加书籍页面
     *  修改书籍页面
     *  Controller代码

我看了一些其他的整合视频感觉都没有狂神的清晰，层次分的分明白，结合狂神的笔记写的

# 整体项目结构 #

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ0ODY2MTUz_size_16_color_FFFFFF_t_70_pic_center]

# 数据库环境 #

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');

# 环境依赖 #

## pom.xml ##

<?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>org.example</groupId>
        <artifactId>ssmkuang</artifactId>
        <version>1.0-SNAPSHOT</version>
        <properties>
            <java.version>13</java.version>
            <maven.compiler.source>${java.version}</maven.compiler.source>
            <maven.compiler.target>${java.version}</maven.compiler.target>
        </properties>
        <dependencies>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-webmvc</artifactId>
                <version>5.2.7.RELEASE</version>
            </dependency>
    
            
            <dependency>
                <groupId>javax.servlet</groupId>
                <artifactId>javax.servlet-api</artifactId>
                <version>3.1.0</version>
                <scope>provided</scope>
            </dependency>
    
            <dependency>
                <groupId>javax.servlet.jsp</groupId>
                <artifactId>jsp-api</artifactId>
                <version>2.2</version>
                <scope>provided</scope>
            </dependency>
    
            <dependency>
                <groupId>javax.servlet</groupId>
                <artifactId>jstl</artifactId>
                <version>1.2</version>
                <scope>provided</scope>
            </dependency>
    
    
            
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>fastjson</artifactId>
                <version>1.2.75</version>
            </dependency>
    
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-jdbc</artifactId>
                <version>5.2.7.RELEASE</version>
            </dependency>
    
            
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-aspects</artifactId>
                <version>5.2.7.RELEASE</version>
            </dependency>
    
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-test</artifactId>
                <version>5.2.7.RELEASE</version>
            </dependency>
    
            <dependency>
                <groupId>org.mybatis</groupId>
                <artifactId>mybatis-spring</artifactId>
                <version>1.3.3</version>
            </dependency>
    
            <dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
                <version>8.0.20</version>
            </dependency>
    
            <dependency>
                <groupId>junit</groupId>
                <artifactId>junit</artifactId>
                <version>4.12</version>
                <scope>test</scope>
            </dependency>
    
            <dependency>
                <groupId>org.mybatis</groupId>
                <artifactId>mybatis</artifactId>
                <version>3.5.5</version>
            </dependency>
    
            <dependency>
    
                <groupId>com.alibaba</groupId>
    
                <artifactId>druid</artifactId>
    
                <version>1.1.16</version>
            </dependency>
    
            <dependency>
                <groupId>org.slf4j</groupId>
                <artifactId>slf4j-api</artifactId>
                <version>1.7.30</version>
            </dependency>
    
            <dependency>
                <groupId>ch.qos.logback</groupId>
                <artifactId>logback-classic</artifactId>
                <version>1.2.3</version>
            </dependency>
    
            
            <dependency>
                <groupId>javax.annotation</groupId>
                <artifactId>javax.annotation-api</artifactId>
                <version>1.3.2</version>
            </dependency>
    
    
    
        </dependencies>
    
        
        <build>
            <resources>
                <resource>
                    <directory>src/main/resources</directory>
                    <includes>
                        <include>**/*.properties</include>
                        <include>**/*.xml</include>
                    </includes>
                    <filtering>true</filtering>
                </resource>
                <resource>
                    <directory>src/main/java</directory>
                    <includes>
                        <include>**/*.properties</include>
                        <include>**/*.xml</include>
                    </includes>
                    <filtering>true</filtering>
                </resource>
            </resources>
        </build>
    </project>

## Maven资源过滤设置 ##

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

# 建立基本结构 #

com.blb.entity
    com.blb.dao
    com.blb.service
    com.blb.controller

## mybatis-config.xml ##

## applicationContext.xml ##

# Mybatis层编写 #

## 数据库配置文件 :jdbc.properties ##

这里我还加了Druid连接池的配置

jdbc.driver=com.mysql.cj.jdbc.Driver
    jdbc.url=jdbc:mysql://localhost:3306/db3?serverTimezone=UTC&useUnicode=true&characterEncoding=UTF-8
    jdbc.username=root
    jdbc.password=123456
    jdbc.init=1
    jdbc.minIdle=1
    jdbc.maxActive=10

## 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>
    
    
        <typeAliases>
            <package name="com.blb.entity"/>
        </typeAliases>
    
        <mappers>
            <mapper class="com.blb.dao.BookMapper"></mapper>
        </mappers>
    </configuration>

## 编写数据库对应的实体类 ##

package com.blb.entity;
    
    public class Books { 
    
        private int bookID;
        private String bookName;
        private int bookCounts;
        private String detail;
    
         get/set

## 编写Dao层的 Mapper接口 ##

package com.blb.dao;
    
    import com.blb.entity.Books;
    
    import java.util.List;
    
    
    
    public interface BookMapper { 
    
        //增加一个Book
        int addBook(Books book);
    
        //根据id删除一个Book
        int deleteBookById(@Param("id") int id);
    
        //更新Book
        int updateBook(Books books);
    
        //根据id查询,返回一个Book
        Books queryBookById(@Param("id") int id);
    
        //查询全部Book,返回list集合
        List<Books> queryAllBook();
    
        //通过书名查书籍返回一个Book
        Books queryBookByName(@Param("bookName") String bookName);
    
    }
    
    }

## 编写接口对应的 Mapper.xml 文件。需要导入MyBatis的包 ##

<?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.blb.dao.BookMapper">
    
        
    <insert id="addBook" parameterType="Books">
        insert into books(bookName,bookCounts,detail)
    values (#{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>

## 编写Service层的接口和实现类 ##

### BookService 接口 ###

package com.blb.service;
    
    import com.blb.entity.Books;
    import org.apache.ibatis.annotations.Param;
    
    import java.util.List;
    
    public interface BookService { 
        //增加一个Book
        int addBook(Books book);
        //根据id删除一个Book
        int deleteBookById(int id);
        //更新Book
        int updateBook(Books books);
        //根据id查询,返回一个Book
        Books queryBookById(int id);
        //查询全部Book,返回list集合
        List<Books> queryAllBook();
       通过书名查书籍返回一个Book
        Books queryBookByName(String bookName);
    
    }

## BookServiceImpl实现类 ##

package com.blb.service;
    
    import com.blb.dao.BookMapper;
    import com.blb.entity.Books;
    
    import java.util.List;
    
    public class BookServiceImpl implements BookService{ 
    
        //sevice 掉用dao层
        private BookMapper bookMapper;
    
        public BookMapper getBookMapper() { 
            return bookMapper;
        }
    
        public void setBookMapper(BookMapper bookMapper) { 
            this.bookMapper = bookMapper;
        }
    
        @Override
        public int addBook(Books book) { 
            return bookMapper.addBook(book);
        }
    
        @Override
        public int deleteBookById(int id) { 
            return bookMapper.deleteBookById(id);
        }
    
        @Override
        public int updateBook(Books books) { 
            return bookMapper.updateBook(books);
        }
    
        @Override
        public Books queryBookById(int id) { 
            return bookMapper.queryBookById(id);
        }
    
        @Override
        public List<Books> queryAllBook() { 
            return bookMapper.queryAllBook();
        }
    
        @Override
        public Books queryBookByName(String bookName) { 
            return bookMapper.queryBookByName(bookName);
        }
    }

# Spring层 #

配置Spring整合MyBatis，数据源使用Druid或者c3p0连接池

## Spring整合Mybatis的相关的配置文件 spring-dao.xml ##

### Druid版 ###

<?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"></context:property-placeholder>
    
        
        <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
            
            <property name="driverClassName" value="${jdbc.driver}"></property>
            <property name="url" value="${jdbc.url}"></property>
            <property name="username" value="${jdbc.username}"></property>
            <property name="password" value="${jdbc.password}"></property>
    
            
            <property name="initialSize" value="${jdbc.init}"></property>
            <property name="minIdle" value="${jdbc.minIdle}"></property>
            <property name="maxActive" value="${jdbc.maxActive}"></property>
    
            
            <property name="maxWait" value="60000"></property>
    
            
            <property name="timeBetweenEvictionRunsMillis" value="60000"></property>
    
            
            <property name="minEvictableIdleTimeMillis" value="300000"></property>
        </bean>
    
    
        
        <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
            
            <property name="dataSource" ref="dataSource"></property>
            
            <property name="configLocation" value="classpath:mybatis-config.xml"></property>
            
            
            <property name="typeAliasesPackage" value="com.blb.entity"></property>
        </bean>
    
        <bean id="MapperScannerConfigurer" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
            
            
            <property name="basePackage" value="com.blb.dao"></property>
            
            <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
        </bean>
    </beans>

### c3p0版 ###

<?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/springcontext.xsd">
    
    
    <context:property-placeholder location="classpath:database.properties"/>
    
    
    <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}"/>
    
    <property name="maxPoolSize" value="30"/>
    <property name="minPoolSize" value="10"/>
    
    <property name="autoCommitOnClose" value="false"/>
    
    <property name="checkoutTimeout" value="10000"/>
    
    <property name="acquireRetryAttempts" value="2"/>
    </bean>
    
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
    
    
    <property name="dataSource" ref="dataSource"/>
    
    <property name="configLocation" value="classpath:mybatis-config.xml"/>
    </bean>
    
    
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
    
    <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
    
    <property name="basePackage" value="com.blb.dao"/>
    </bean>
    </beans>

## spring整合service层 ##

# SpringMVC层 #

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ0ODY2MTUz_size_16_color_FFFFFF_t_70_pic_center 1]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ0ODY2MTUz_size_16_color_FFFFFF_t_70_pic_center 2]

## 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">
    
        
        
        
        
        <servlet>
            <servlet-name>mvc_my</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>mvc_my</servlet-name>
            <url-pattern>/</url-pattern>
        </servlet-mapping>
    
        
        <filter>
            <filter-name>encoding</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>encoding</filter-name>
            <url-pattern>/*</url-pattern>
        </filter-mapping>
    
        <session-config>
            <session-timeout>15</session-timeout>
        </session-config>
    
        
        <listener>
            <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
        </listener>
        <context-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:applicationContext.xml</param-value>
        </context-param>
    </web-app>

## 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/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 ">
    
    
        
        <context:component-scan base-package="com.blb.controller" >
    
        </context:component-scan>
    
        <mvc:default-servlet-handler></mvc:default-servlet-handler>
    
        
        <mvc:annotation-driven>
    
            
            <mvc:message-converters register-defaults="false">
    
                <bean id="fastJsonHttpMessageConverter"
                      class="com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter">
                    
                    <property name="supportedMediaTypes">
                        <list>
                            
                            <value>text/html;charset=UTF-8</value>
                            <value>application/json;charset=UTF-8</value>
                        </list>
                    </property>
                </bean>
            </mvc:message-converters>
    
        </mvc:annotation-driven>
    
        
        <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    
            
            <property name="prefix" value="/"></property>
            
            <property name="suffix" value=".jsp"></property>
        </bean>
    
    
    </beans>

## Spring配置整合文件，applicationContext ##

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

## 配置日志 ##

logback.xml

<?xml version="1.0" encoding="utf-8"?>
    <configuration>
        
        <appender name="console" class="ch.qos.logback.core.ConsoleAppender">
            
            <encoder>
                
                <pattern>[%thread] %d{HH:mm:ss.SSS} %-5level %logger{36} - %msg%n</pattern>
            </encoder>
        </appender>
    
        
        <root level="debug">
            
            <appender-ref ref="console"/>
        </root>
    </configuration>

# Controller 和 视图层编写 #

## 首页 ##

index.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
    <html>
      <head>
        <title>首页</title>
        
        <link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
    
        <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">进入书籍页面</a>
      </h3>
      </body>
    </html>

## 书籍列表页 ##

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">
        
        <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="${pageContext.request.contextPath}/book/toAddBook">新增书籍</a>
                <a class="btn btn-primary" href="${pageContext.request.contextPath}/book/allBook">显示全部书籍</a>
            </div>
            <div class="col-md-4 column"></div>
        <div class="col-md-4 column">
            <form class="form-inline" action="${pageContext.request.contextPath}/book/queryBook" method="post"
                  style="float: right">
                <span style="color:red;font-weight: bold">${ error}
                </span>
                <input type="text" name="queryBookName" class="form-control"
                       placeholder="输入查询书名" required>
                <input type="submit" value="查询" class="btn btn-primary">
            </form>
        </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="${list}">
        <tr>
        <td>${ book.bookID}</td>
        <td>${ book.bookName}</td>
        <td>${ book.bookCounts}</td>
        <td>${ book.detail}</td>
        <td>
    
    
            <a href="${pageContext.request.contextPath}/book/toUpdateBook?id=${book.getBookID()}">更改</a> |
        <a href="${pageContext.request.contextPath}/book/deleteBook/${book.getBookID()}"> 删除</a>
        </td>
        </tr>
    </c:forEach>
                    </tbody>
                </table>
            </div>
    </div>
    </div>
    </body>
    </html>

## 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>新增书籍</title>
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        
        <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>新增书籍</small>
                    </h1>
                </div>
            </div>
        </div>
        <form action="${pageContext.request.contextPath}/book/addBook"
              method="post">
            书籍名称：<input type="text" name="bookName" required><br>
            书籍数量：<input type="text" name="bookCounts" required>><br>
            书籍详情：<input type="text" name="detail" required>><br>
            <input type="submit" value="添加">
        </form>
    </div>

## 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>修改信息</title>
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        
        <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>

## Controller代码 ##

package com.blb.controller;
    
    import com.blb.entity.Books;
    import com.blb.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.ArrayList;
    import java.util.List;
    
    @Controller
    @RequestMapping("/book")
    public class BookController { 
        //controller调用service层
        @Autowired
        @Qualifier("BookServiceImpl")
        private BookService bookService;
    
    // 查询全部的书籍，并展示
        @RequestMapping("/allBook")
        public String list(Model model){ 
            List<Books> books = bookService.queryAllBook();
            model.addAttribute("list",books);
    
            return "allBook";
        }
        //跳转到增加书籍页面
        @RequestMapping("/toAddBook")
        public String toAddPaper(){ 
            return "addBook";
        }
        //添加书籍的请求
       @RequestMapping("/addBook")
        public String addBook(Books books)
        { 
            bookService.addBook(books);
            return "redirect:/book/allBook";
        }
    
        //跳转到修改页面
        @RequestMapping("/toUpdateBook")
        public String toUpdatePaper(int id,Model model){ 
            Books books=bookService.queryBookById(id);
            model.addAttribute("book",books);
            return "updateBook";
        }
        //修改书籍
        @RequestMapping("/updateBook")
        public String updateBook(Books books){ 
            bookService.updateBook(books);
            return "redirect:/book/allBook";
        }
    
        //删除书籍
        @RequestMapping("/deleteBook/{bookId}")
        public String deleteBook(@PathVariable("bookId") int id){ 
            bookService.deleteBookById(id);
            return "redirect:/book/allBook";
        }
    
    
        //查询书籍
        @RequestMapping("/queryBook")
        public String queryBook(String queryBookName,Model model){ 
            Books books = bookService.queryBookByName(queryBookName);
            List<Books> list=new ArrayList<>();
            list.add(books);
            if(books==null){ 
                list=(bookService.queryAllBook());
                model.addAttribute("error","未找到该书籍");
            }
            model.addAttribute("list",list);
    
            return "allBook";
        }
    }

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