Day3：SSM

2024-03-08 16:51:25

本文使用IDEA，利用Maven管理项目，整合SSM框架搭建论文管理系统，实现简单的增、删、改、查功能。步骤详细，讲解丰富，适合新手入门。

开发工具

IntelliJ IDEA Ultimate 2017.2.2
Apache-tomcat-9.0.5
JDK 1.8.0_121
MySQL 5.7
Maven 3.3.9

工程结构

最终完成后的工程结构：

下面开始详细的讲解项目的开发过程。

IDEA+Maven搭建项目骨架

1. 新建Maven项目：
点击File -> New -> Project -> Maven -> 勾选 Create from archetype -> 选择 maven-archetype-webapp

在弹出的new project 选项卡中填写GroupId和Artifactid，其中GroupID是项目组织唯一的标识符，实际对应JAVA的包的结构，是main目录里java的目录结构，ArtifactID是项目的唯一的标识符，实际对应项目的名称，就是项目根目录的名称。对于入门练习，这两项可以随意填写。

之后点击next 选择Maven版本（其中IDEA 专业版自带Maven，也可以选择自己下载的maven）。之后填写项目名称和项目地址，完成后点击Finish，完成项目骨架的创建。

2. 在新建的项目中添加所需要的文件/文件夹

创建之后的项目如图所示，我们需要在这之上新建一些目录。

在项目的根目录下新建target文件夹，系统自动将其设置为“Excluded”

在src/main目录下新建Directory：“java”，并将其设置为“Source Root”（即：此项目默认的代码文件源目录）

在刚才新建的java文件下新建“com”包，再在com包下新建四个包，分别命名为：pojo,service,dao,controller。（如果出现下图中所示的包名重叠的情况，可以点击图中所示的图标，将“Hide empty middle package取消掉”）

上面新建的四个包：pojo,service,dao,controller，其所存放的分别是：

pojo: 存放自定义的java类。如：paper类，user类，book类等，每个类的属性设为private，并提供public属性的getter/setter方法让外界访问
service：定义接口，包含系统所提供的功能。（之后还会在service包下再新建impl包）。
dao：定义接口，包含与数据库进行交互的功能。
controller：控制器，负责接收页面请求，转发和处理。

在resource包下新建Directory：“mapper”（用于存放xxxMapper.xml文件）和“spring”（用于存放spring-xxx.xml配置文件），新建文件：“jdbc.properties”（mysql数据库配置文件）,”log4j.properties”（日志输出配置文件）,”mybatis-config.xml”（mybatis框架配置文件）。

在web-inf目录下新建“jsp”包，存放xxx.jsp显示界面。
补充之后的项目目录如下图所示，至此项目骨架搭建完毕，开始写代码实现增删改查功能。

3. 自定义Paper类

在这之前要对项目的pom.xml文件进行配置，在此文件中配置项目所需要的jar包。

pom.xml

<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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com</groupId>
<artifactId>first</artifactId>
<packaging>war</packaging>
<version>1.0-SNAPSHOT</version>
<name>first Maven Webapp</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<spring.version>5.0.3.RELEASE</spring.version>
<mybatis.version>3.4.4</mybatis.version>
</properties>
<dependencies>

<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>


<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>${spring.version}</version>
</dependency>

<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${spring.version}</version>
</dependency>

<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring.version}</version>
</dependency>

<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.0.1</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>
</dependency>
<dependency>
<groupId>taglibs</groupId>
<artifactId>standard</artifactId>
<version>1.1.2</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.9.4</version>
</dependency>


<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.38</version>
</dependency>

<dependency>
<groupId>com.mchange</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.5.2</version>
</dependency>

<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>${mybatis.version}</version>
</dependency>

<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.1</version>
</dependency>


<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<version>1.1.1</version>
</dependency>
</dependencies>
<build>
<finalName>first</finalName>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
</project>

本项目所用的数据库为MySQL 5.7 建表语句如下：

SET FOREIGN_KEY_CHECKS=0;
-- ----------------------------
-- Table structure for `paper`
-- ----------------------------
DROP TABLE IF EXISTS `paper`;
CREATE TABLE `paper` (
`paper_id` bigint(20) NOT NULL AUTO_INCREMENT COMMENT 'paperID',
`name` varchar(100) NOT NULL COMMENT 'paper名称',
`number` int(11) NOT NULL COMMENT 'paper数量',
`detail` varchar(200) NOT NULL COMMENT 'paper描述',
PRIMARY KEY (`paper_id`)
) ENGINE=InnoDB AUTO_INCREMENT=12 DEFAULT CHARSET=utf8 COMMENT='paper表';
-- ----------------------------
-- Records of paper
-- ----------------------------
INSERT INTO `paper` VALUES ('1', '机器学习', '2', 'mlmlmlml');
INSERT INTO `paper` VALUES ('2', '深度学习', '3', 'dldldl');
INSERT INTO `paper` VALUES ('3', '大数据', '4', 'bdbdbd');

下面开始写java代码：

在pojo包中新建Paper.java

package com.pojo;
public class Paper {
private long paperId;
private String paperName;
private int paperNum;
private String paperDetail;
public long getPaperId() {
return paperId;
}
public void setPaperId(long paperId) {
this.paperId = paperId;
}
public String getPaperName() {
return paperName;
}
public void setPaperName(String paperName) {
this.paperName = paperName;
}
public int getPaperNum() {
return paperNum;
}
public void setPaperNum(int paperNum) {
this.paperNum = paperNum;
}
public String getPaperDetail() {
return paperDetail;
}
public void setPaperDetail(String paperDetail) {
this.paperDetail = paperDetail;
}
}

其中getter/setter方法可以在定义完私有属性之后使用IDEA提供的快捷键：ALT+Insert 来实现快速添加

在service包中新建接口 PaperService：

package com.service;
import com.pojo.Paper;
import java.util.List;
public interface PaperService {
int addPaper(Paper paper);
int deletePaperById(long id);
int updatePaper(Paper paper);
Paper queryById(long id);
List<Paper> queryAllPaper();
}

在service包下新建impl包，并在此包中新建PaperServiceImpl.java

package com.service.impl;
import com.pojo.Paper;
import com.dao.PaperDao;
import com.service.PaperService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;
@Service
public class PaperServiceImpl implements PaperService {
@Autowired
private PaperDao paperDao;
@Override
public int addPaper(Paper paper) {
return paperDao.addPaper(paper);
}
@Override
public int deletePaperById(long id) {
return paperDao.deletePaperById(id);
}
@Override
public int updatePaper(Paper paper) {
return paperDao.updatePaper(paper);
}
@Override
public Paper queryById(long id) {
return paperDao.queryById(id);
}
@Override
public List<Paper> queryAllPaper() {
return paperDao.queryAllPaper();
}
}

在dao包中新建接口 PaperDao.java

package com.dao;
import com.pojo.Paper;
import java.util.List;
public interface PaperDao {
int addPaper(Paper paper);
int deletePaperById(long id);
int updatePaper(Paper paper);
Paper queryById(long id);
List<Paper> queryAllPaper();
}

在controller包中新建 PaperController.java

package com.controller;
import com.pojo.Paper;
import com.service.PaperService;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
@Controller
@RequestMapping("/paper")
public class PaperController {
@Autowired
private PaperService paperService;
@RequestMapping("/allPaper")
public String list(Model model) {
List<Paper> list = paperService.queryAllPaper();
model.addAttribute("list", list);
return "allPaper";
}
@RequestMapping("toAddPaper")
public String toAddPaper() {
return "addPaper";
}
@RequestMapping("/addPaper")
public String addPaper(Paper paper) {
paperService.addPaper(paper);
return "redirect:/paper/allPaper";
}
@RequestMapping("/del/{paperId}")
public String deletePaper(@PathVariable("paperId") Long id) {
paperService.deletePaperById(id);
return "redirect:/paper/allPaper";
}
@RequestMapping("toUpdatePaper")
public String toUpdatePaper(Model model, Long id) {
model.addAttribute("paper", paperService.queryById(id));
return "updatePaper";
}
@RequestMapping("/updatePaper")
public String updatePaper(Model model, Paper paper) {
paperService.updatePaper(paper);
paper = paperService.queryById(paper.getPaperId());
model.addAttribute("paper", paper);
return "redirect:/paper/allPaper";
}
}

在resource/mapper包下新建 PaperMapper.xml（mybatis框架mapper代理开发配置文件）

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.dao.PaperDao">
<resultMap type="Paper" id="paperResultMap" >
<id property="paperId" column="paper_id"/>
<result property="paperName" column="name"/>
<result property="paperNum" column="number"/>
<result property="paperDetail" column="detail"/>
</resultMap>
<insert id="addPaper" parameterType="Paper">
INSERT INTO paper(paper_id,name,number,detail) VALUE (#{paperId},#{paperName}, #{paperNum}, #{paperDetail})
</insert>
<delete id="deletePaperById" parameterType="long">
DELETE FROM paper WHERE paper_id=#{paperID}
</delete>
<update id="updatePaper" parameterType="Paper">
UPDATE paper
SET NAME = #{paperName},NUMBER = #{paperNum},detail = #{paperDetail}
WHERE paper_id = #{paperId}
</update>
<select id="queryById" resultType="Paper" parameterType="long">
SELECT paper_id,name,number,detail
FROM paper
WHERE paper_id=#{paperId}
</select>
<select id="queryAllPaper" resultMap="paperResultMap">
SELECT paper_id,name,number,detail
FROM paper
</select>
</mapper>

在resource/spring包下分别新建配置文件：spring-dao.xml , spring-mvc.xml , spring-service.xml

spring-dao.xml：（spring-mybatis整合配置文件）

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


<context:property-placeholder location="classpath:jdbc.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"/>

<property name="typeAliasesPackage" value="com.pojo"/>

<property name="mapperLocations" value="classpath:mapper/*.xml"/>
</bean>

<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">

<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>

<property name="basePackage" value="com.dao"/>
</bean>
</beans>

spring-mvc.xml：（spring mvc配置文件）

<?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
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">


<!-- 简化配置：
(1)自动注册DefaultAnootationHandlerMapping,AnotationMethodHandlerAdapter
(2)提供一些列：数据绑定，数字和日期的format @NumberFormat, @DateTimeFormat, xml,json默认读写支持
-->
<mvc:annotation-driven />
<!-- 2.静态资源默认servlet配置
(1)加入对静态资源的处理：js,gif,png
(2)允许使用"/"做整体映射
-->
<mvc:default-servlet-handler/>

<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>

<context:component-scan base-package="com.controller" />
</beans>

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"
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/tx
http://www.springframework.org/schema/tx/spring-tx.xsd">

<context:component-scan base-package="com.service" />

<bean id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">

<property name="dataSource" ref="dataSource" />
</bean>

<tx:annotation-driven transaction-manager="transactionManager" />
</beans>

在jdbc.properties文件中配置mysql数据库（这里的数据库名、表名，用户名，密码一定要记得修改！！！）。
```
 
```
1. jdbc.driver=com.mysql.jdbc.Driver
2. jdbc.url=jdbc:mysql://127.0.0.1:3306/papersystem?useUnicode=true&characterEncoding=utf8
3. jdbc.username=root
4. jdbc.password=12345678
在log4j.properties文件中配置日志设定

log4j.rootLogger=ERROR, stdout
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n

在mybatis-config.xml文件中配置mybtis框架

<?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="useGeneratedKeys" value="true" />

<setting name="useColumnLabel" value="true" />

<setting name="mapUnderscoreToCamelCase" value="true" />
</settings>
</configuration>

配置web.xml文件

<!DOCTYPE web-app PUBLIC
"-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd" >
<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_3_1.xsd"
version="3.1" metadata-complete="true">
<display-name>Archetype Created Web Application</display-name>
<servlet>
<servlet-name>dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!-- 配置springMVC需要加载的配置文件
spring-dao.xml,spring-service.xml,spring-mvc.xml
Mybatis - > spring -> springmvc
-->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring/spring-*.xml</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>dispatcher</servlet-name>

<url-pattern>/</url-pattern>
</servlet-mapping>
<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>
</web-app>

修改index.jsp文件

index.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8" %>
<%
pageContext.setAttribute("path", request.getContextPath());
%>
<!DOCTYPE HTML>
<html>
<head>
<title>首页</title>
<style type="text/css">
a {
text-decoration: none;
color: black;
font-size: 18px;
}
h3 {
width: 180px;
height: 38px;
margin: 100px auto;
text-align: center;
line-height: 38px;
background: deepskyblue;
border-radius: 4px;
}
</style>
</head>
<body>
<div class="container">
<div class="row clearfix">
<div class="col-md-12 column">
<div class="page-header">
<h1>
基于SSM框架的管理系统：简单实现增、删、改、查。
</h1>
</div>
</div>
</div>
</div>
<br><br>
<h3>
<a href="${path }/paper/allPaper">点击进入管理页面</a>
</h3>
</body>
</html>

在WEB-INF/jsp包下分别新建addPaper,jsp , appPaper.jsp , updatePaper.jsp

allPaper.jsp：所有论文显示界面

<%--
Created by IntelliJ IDEA.
User: lenovo
Date: 2018/4/6
Time: 16:57
To change this template use File | Settings | File Templates.
--%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<% String appPath = request.getContextPath(); %>
<html>
<head>
<title>Paper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>
基于SSM框架的管理系统：简单实现增、删、改、查。
</h1>
</div>
</div>
</div>
<div class="row clearfix">
<div class="col-md-12 column">
<div class="page-header">
<h1>
<small>论文列表 —— 显示所有论文</small>
</h1>
</div>
</div>
</div>
<div class="row">
<div class="col-md-4 column">
<a class="btn btn-primary" href="${path}/paper/toAddPaper">新增</a>
</div>
</div>
<div class="row clearfix">
<div class="col-md-12 column">
<table class="table table-hover table-striped">
<thead>
<tr>
<th>论文编号</th>
<th>论文名字</th>
<th>论文数量</th>
<th>论文详情</th>
<th>操作</th>
</tr>
</thead>
<tbody>
<c:forEach var="paper" items="${requestScope.get('list')}" varStatus="status">
<tr>
<td>${paper.paperId}</td>
<td>${paper.paperName}</td>
<td>${paper.paperNum}</td>
<td>${paper.paperDetail}</td>
<td>
<a href="${path}/paper/toUpdatePaper?id=${paper.paperId}">更改</a> |
<a href="<%=appPath%>/paper/del/${paper.paperId}">删除</a>
</td>
</tr>
</c:forEach>
</tbody>
</table>
</div>
</div>
</div>

addPaper,jsp：论文添加页面

<%--
Created by IntelliJ IDEA.
User: lenovo
Date: 2018/4/7
Time: 16:45
To change this template use File | Settings | File Templates.
--%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%
String path = request.getContextPath();
String basePath = request.getScheme() + "://"
+ request.getServerName() + ":" + request.getServerPort()
+ path + "/";
%>
<html>
<head>
<title>新增论文</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>
基于SSM框架的管理系统：简单实现增、删、改、查。
</h1>
</div>
</div>
</div>
<div class="row clearfix">
<div class="col-md-12 column">
<div class="page-header">
<h1>
<small>新增论文</small>
</h1>
</div>
</div>
</div>
<form action="" name="userForm">
论文名称：<input type="text" name="paperName"><br><br><br>
论文数量：<input type="text" name="paperNum"><br><br><br>
论文详情：<input type="text" name="paperDetail"><br><br><br>
<input type="button" value="添加" οnclick="addPaper()">
</form>
<script type="text/javascript">
function addPaper() {
var form = document.forms[0];
form.action = "<%=basePath %>paper/addPaper";
form.method = "post";
form.submit();
}
</script>
</div>

updatePaper.jsp：论文更改界面

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%
String path = request.getContextPath();
String basePath = request.getScheme() + "://"
+ request.getServerName() + ":" + request.getServerPort()
+ path + "/";
%>
<html>
<head>
<title>修改论文</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>
基于SSM框架的管理系统：简单实现增、删、改、查。
</h1>
</div>
</div>
</div>
<div class="row clearfix">
<div class="col-md-12 column">
<div class="page-header">
<h1>
<small>修改论文</small>
</h1>
</div>
</div>
</div>
<form action="" name="userForm">
<input type="hidden" name="paperId" value="${paper.paperId}"/>
论文名称：<input type="text" name="paperName" value="${paper.paperName}"/>
论文数量：<input type="text" name="paperNum" value="${paper.paperNum}"/>
论文详情：<input type="text" name="paperDetail" value="${paper.paperDetail }"/>
<input type="button" value="提交" οnclick="updatePaper()"/>
</form>
<script type="text/javascript">
function updatePaper() {
var form = document.forms[0];
form.action = "<%=basePath %>paper/updatePaper";
form.method = "post";
form.submit();
}
</script>
</div>