spring+springmvc+mybatis
环境配置
idea
mysql 5.7
tomcat 8.5
maven 3.6
创建数据库
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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');
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编写数据库对应的实体类com.longdi.pojo.books
导入lombok在pom.xml中
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package com.longdi.pojo;
import lombok.allargsconstructor;
import lombok.data;
import lombok.noargsconstructor;
/**
* @author: 龍弟
* @description
* @date: 2021/9/27 20:22
*/
@data
@allargsconstructor
@noargsconstructor
public class books {
private int bookid;
private string bookname;
private int bookcounts;
private string detail;
}
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导入相关的pom依赖
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<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>
<dependency>
<groupid>org.aspectj</groupid>
<artifactid>aspectjweaver</artifactid>
<version>1.8.4</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>
<dependency>
<groupid>org.projectlombok</groupid>
<artifactid>lombok</artifactid>
<version>1.18.16</version>
<scope>compile</scope>
</dependency>
</dependencies>
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资源过滤设置
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<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>
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mybatis层编写
创建mybatis-config.xml
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<?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.longdi.pojo"/>
</typealiases>
<mappers>
<mapper class="com.longdi.dao.bookmapper"/>
</mappers>
</configuration>
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jdbc.driver=com.mysql.jdbc.driver
jdbc.url=jdbc:mysql://localhost:3306/ssmbuild?usessl=true&useunicode=true&characterencoding=utf8
jdbc.username=root
jdbc.password=123456
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编写dao层的mapper接口
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package com.longdi.dao;
import com.longdi.pojo.books;
import org.apache.ibatis.annotations.param;
import java.util.list;
/**
* @author: 龍弟
* @description
* @date: 2021/9/27 20:32
*/
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 querybookbyid(@param("bookid")int id);
//查询全部的书
list<books> queryallbook();
books querybookbyname(@param("bookname")string bookname);
}
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编写接口对应的 mapper.xml 文件。需要导入mybatis的包；
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<?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.longdi.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>
<select id="querybookbyid" resulttype="books">
select * from ssmbuild.books
where bookid=#{bookid}
</select>
<select id="queryallbook" resulttype="books">
select * from ssmbuild.books
</select>
<select id="querybookbyname" resulttype="books">
select * from ssmbuild.books where bookname=#{bookname}
</select>
</mapper>
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编写service层的接口
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package com.longdi.service;
import com.longdi.pojo.books;
import java.util.list;
/**
* @author: 龍弟
* @description
* @date: 2021/9/27 21:03
*/
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 querybookbyid(int id);
//查询全部的书
list<books> queryallbook();
books querybookbyname(string bookname);
}
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service层的实现类
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package com.longdi.service;
import com.longdi.dao.bookmapper;
import com.longdi.pojo.books;
import org.springframework.stereotype.service;
import java.util.list;
/**
* @author: 龍弟
* @description
* @date: 2021/9/27 21:05
*/
public class bookserviceimpl implements bookservice{
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) {
system.out.println("bookserviceimpl:updatebook=>"+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);
}
}
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spring整合mybatis spring-dao.xml
以下为spring层
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<?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 -->
<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.longdi.dao"/>
</bean>
</beans>
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spring-service.xml文件
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<?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:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
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/aop
http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd">
<!-- 扫描service相关的bean -->
<context:component-scan base-package="com.longdi.service" />
<!--bookserviceimpl注入到ioc容器中-->
<bean id="bookserviceimpl" class="com.longdi.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>
<!--aop事物支持-->
<!--结合aop实现事物的织入-->
<!--配置事物的通知-->
<tx:advice id="txadvice" transaction-manager="transactionmanager">
<tx:attributes>
<tx:method name="*" propagation="required"/>
</tx:attributes>
</tx:advice>
<!--配置事物切入-->
<aop:config>
<aop:pointcut id="txpointcut" expression="execution(* com.longdi.dao.*.*(..))"/>
<aop:advisor advice-ref="txadvice" pointcut-ref="txpointcut"/>
</aop:config>
</beans>
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以下为springmvc层
配置web.xml
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<?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">
<!--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>
</web-app>
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spring-mvc.xml
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<?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.longdi.controller" />
</beans>
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spring配置整合文件，创建applicationcontext.xml
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<?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>
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以上为ssm的环境配置，下面编写controller层和视图层，实现书籍的crud功能
controller层 书籍的增删改查功能
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import java.util.arraylist;
import java.util.list;
/**
* @author: 龍弟
* @description
* @date: 2021/9/27 22:47
*/
@controller
@requestmapping("/book")
public class bookcontroller {
@autowired
@qualifier("bookserviceimpl")
private bookservice bookservice;
@requestmapping("/allbook")
public string list(model model) {
list<books> list = bookservice.queryallbook();
model.addattribute("list", list);
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){
system.out.println("addbook=>"+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){
system.out.println("updatebook=>"+books);
int i=bookservice.updatebook(books);
if(i>0){
system.out.println("添加books成功"+books);
}
return "redirect:/book/allbook";
}
//删除书籍
@requestmapping("/deletebook/{bookid}")
public string delebook(@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);
system.err.println("querybook=>"+books);
list<books> list=new arraylist<books>();
list.add(books);
if(books==null){
list=bookservice.queryallbook();
model.addattribute("error","未查到");
}
model.addattribute("list",list);
return "allbook";
}
}
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编写首页index.jsp
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<%@ page language="java" contenttype="text/html; charset=utf-8" pageencoding="utf-8" %>
<!doctype html>
<html>
<head>
<title>首页</title>
<style>
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>
<h3>
<a href="${pagecontext.request.contextpath}/book/allbook" rel="external nofollow" rel="external nofollow" >进入到书籍页面</a>
</h3>
</body>
</html>
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编写书籍列表页面allbook.jsp
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<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contenttype="text/html;charset=utf-8" language="java" %>
<html>
<head>
<title>书籍列表</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<!-- 引入 bootstrap -->
<link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="stylesheet">
</head>
<body>
<div class="container">
<div class="row clearfix">
<div class="col-md-12 column">
<div class="page-header">
<h1>
<small>书籍列表 —— 显示所有书籍</small>
</h1>
</div>
</div>
</div>
<div class="row">
<div class="col-md-4 column">
<a class="btn btn-primary" href="${pagecontext.request.contextpath}/book/toaddbook" rel="external nofollow" >新增书籍</a>
<a class="btn btn-primary" href="${pagecontext.request.contextpath}/book/allbook" rel="external nofollow" rel="external nofollow" >显示全部书籍</a>
</div>
<div class="col-md-4 column">
<div class="col-md-8 column"></div>
<%--查询书籍--%>
<form class="form-inline" action="${pagecontext.request.contextpath}/book/querybook" method="post" style="float: right">
<span style="color:red;font-weight: bold">${error}</span>
<input type="text" name="querybookname" class="form-control" placeholder="请输入要查询的书籍名称">
<input type="submit" value="查询" class="btn btn-primary"/>
</form>
</div>
</div>
<div class="row clearfix">
<div class="col-md-12 column">
<table class="table table-hover table-striped">
<thead>
<tr>
<th>书籍编号</th>
<th>书籍名字</th>
<th>书籍数量</th>
<th>书籍详情</th>
<th>操作</th>
</tr>
</thead>
<tbody>
<c:foreach var="book" items="${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()}" rel="external nofollow" >更改</a> |
<a href="${pagecontext.request.contextpath}/book/deletebook/${book.getbookid()}" rel="external nofollow" >删除</a>
</td>
</tr>
</c:foreach>
</tbody>
</table>
</div>
</div>
</div>
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添加书籍页面 addbook.jsp
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<%@ 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">
<!-- 引入 bootstrap -->
<link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="external nofollow" rel="external nofollow" rel="external nofollow" 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="${pagecontext.request.contextpath}/book/addbook" method="post">
书籍名称：<input type="text" name="bookname"><br><br><br>
书籍数量：<input type="text" name="bookcounts"><br><br><br>
书籍详情：<input type="text" name="detail"><br><br><br>
<input type="submit" value="添加">
</form>
</div>
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修改书籍页面 updatebook.jsp
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<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contenttype="text/html;charset=utf-8" language="java" %>
<html>
<head>
<title>修改信息</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<!-- 引入 bootstrap -->
<link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="stylesheet">
</head>
<body>
<div class="container">
<div class="row clearfix">
<div class="col-md-12 column">
<div class="page-header">
<h1>
<small>修改信息</small>
</h1>
</div>
</div>
</div>
<form action="${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>
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项目部署到tomcat中
项目结构图
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原文链接：https://blog.csdn.net/weixin_48838340/article/details/120537708