当前位置：网站首页>Teach you to play with SSM framework

In the current enterprise applications ,Spring The whole family bucket frame is a must . and Mybatis Framework as a persistence layer framework , Although you need to write it yourself SQL sentence , But its support for high concurrency and high response , And dynamic SQL And dynamic binding support makes it stand out .

therefore SSM frame （Spring + Spring MVC +Mybatis） Gradually replaced SSH The framework has become a more commonly used framework at present . This article USES the IDEA, utilize Maven Management project , Integrate SSM Framework to build a thesis management system , To achieve a simple increase in 、 Delete 、 Change 、 check . Step by step , Rich explanations , Perfect for beginners .

SpringMVC summary

be familiar with MVC All of my classmates know that ,MVC namely model（ Model ）、view（ View ）、controller（ control ）, Using a business logic , data , The separation of interface display makes the development more convenient and efficient , With low coupling , High reusability , Maintainability and other advantages . therefore ,SpringMVC It is divided into user interface layer （view）、web layer （controller）、 Domain model layer （model）.

User interface layer ： There are two important interfaces org.springframework.web.servlet.View The interface presents web View or page of the application , It is responsible for converting the result of the client request operation into a form visible to the client . Generally speaking, it is the display of the page ,springmvc Support JSP、Freemarker、Velocity、XSTL、JasperReport、Excel and PDF. org.springframework.web.servlet.viewResolver Provides an indirect layer ,ViewResolver Provides the mapping between view instances and logical names . for example , A file named /WEB-INF/jsp/success.jsp Of jsp page , adopt ”success” The name is quoted , Decouple view and code references .

web layer ： key word Controller、ModelAndView springmvc Provides a org.springframework.web.servlet.mvc.Controller Interfaces and others .Controller Responsible for receiving HttpServletRequest and HttpServletResponse, Navigate the request to the method of the specified path , And assembled a ModelAndView, Contains a corresponding all data map And one. view The name of the reference .

Domain model layer ： It is the object model of customer and system interaction use ORM The framework makes the object model interact with the database object relationship , That's what we understand POJO object .

MyBatis summary

MyBatis Is to support the general SQL Inquire about , Excellent persistence layer framework for stored procedures and advanced mappings . MyBatis Eliminated almost all of them JDBC Manual setting of code and parameters and retrieval of result sets . MyBatis Easy to use XML Or annotations for configuring and raw mapping , The interface and Java Of POJOs（Plain Old Java Objects, ordinary Java object ） Maps to records in the database . Mybatis Divided into three layers ：

API The interface layer ： Interface provided for external use API, Developers through these local API To manipulate the database . As soon as the interface layer receives the call request, it will call the data processing layer to complete the specific data processing .

Data processing layer ： Be responsible for specific SQL lookup 、SQL analysis 、SQL Execute and execute result mapping processing, etc . Its main purpose is to complete a database operation according to the call request .

Foundation support layer ： Responsible for the most basic functional support , Including connection management 、 Business management 、 Configure load and cache handling , These are all common things , Extract them as the most basic components . For the upper layer of data processing layer to provide the most basic support .

Development tools and project structure

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

IDEA+Maven Build project skeleton

1. newly build Maven project

Click on File -> New -> Project -> Maven -> Check Create from archetype -> choice maven-archetype-webapp ( Be careful ： Don't choose the above one by mistake cocoom-22-archetype-webapp)

In the pop-up new project Fill in tab GroupId and Artifactid, among GroupID Is the unique identifier of the project organization , Actual correspondence JAVA Structure of the package for , yes main Directory java Directory structure of ,ArtifactID Is the unique identifier of the project , Name of actual corresponding item , Is the name of the project root . For introductory exercises , These two items can be filled in at will .

After clicking on next choice Maven edition （ among IDEA Professional version Maven, You can also choose your own download maven）. Then fill in the project name and project address , Click when finished Finish, Finish creating the project skeleton .

2. Add the required files to the new project / Folder

The project after creation is as shown in the figure , We need to create some new directories on top of that .

Create a new one at the root of the project target Folder , The system automatically sets it to “Excluded”

stay src/main New under the directory Directory：“java”, And set it to “Source Root”（ namely ： Default code file source directory for this project ）

I just created it java New under file “com” package , And then com Four new packages under the package , Named as ：pojo,service,dao,controller.（ If the package names shown in the figure below overlap , You can click the icon shown in the figure , take “Hide empty middle package Cancel it ”）

Four new packages above ：pojo,service,dao,controller, They are stored separately ：

pojo: Store custom java class . Such as ：paper class ,user class ,book Class etc. , The property of each class is set to private, And provide public Attribute getter/setter Methods for external access
service： Defining interfaces , Include the functions provided by the system .（ After that, I will service New under package impl package ）.
dao： Defining interfaces , Contains functions to interact with the database .
controller： controller , Responsible for receiving page requests , Forwarding and processing .

stay resource Package under the new Directory：“mapper”（ To hold xxxMapper.xml file ） and “spring”（ To hold spring-xxx.xml The configuration file ）.

New file ：“jdbc.properties”（mysql Database configuration file ）,”log4j.properties”（ Log output profile ）,”mybatis-config.xml”（mybatis Framework configuration file ）.

stay web-inf New under the directory “jsp” package , Deposit xxx.jsp display .

The supplementary project directory is shown in the figure below , So far, the skeleton of the project has been built , Start writing code to add, delete, modify, and check .

3. Customize Paper class

Before that, we need to pom.xml File , Required to configure the project in this file jar package .

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>
        <!--  unit testing  -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>3.8.1</version>
            <scope>test</scope>
        </dependency>
        <!--  The first part ：Spring  To configure -->
        <!-- Spring core -->
        <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>
        <!-- Spring DAO -->
        <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>
        <!-- Spring mvc -->
        <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>${spring.version}</version>
        </dependency>
        <!--  The second part ：Servlet web -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.0.1</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>javax.servlet.jsp</groupId>
            <artifactId>jsp-api</artifactId>
            <version>2.2</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>
        <dependency>
            <groupId>taglibs</groupId>
            <artifactId>standard</artifactId>
            <version>1.1.2</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>2.9.4</version>
        </dependency>
        <!--  The third part ： Database and mybatis -->
        <!--  database  -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.38</version>
        </dependency>
        <!--  Database connection pool  -->
        <dependency>
            <groupId>com.mchange</groupId>
            <artifactId>c3p0</artifactId>
            <version>0.9.5.2</version>
        </dependency>
        <!-- MyBatis -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>${mybatis.version}</version>
        </dependency>
        <!-- mybatis-spring Integrated package  -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>1.3.1</version>
        </dependency>
        <!--  The fourth part ： journal  -->
        <!--  Realization slf4j Interface and integration  -->
        <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>

The database for MySQL 5.7 Create table statement

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 name ',
  `number` int(11) NOT NULL COMMENT 'paper Number ',
  `detail` varchar(200) NOT NULL COMMENT 'paper describe ',
  PRIMARY KEY (`paper_id`)
) ENGINE=InnoDB AUTO_INCREMENT=12 DEFAULT CHARSET=utf8 COMMENT='paper surface ';
 
-- ----------------------------
-- Records of paper
-- ----------------------------
INSERT INTO `paper` VALUES ('1', ' machine learning ', '2', 'mlmlmlml');
INSERT INTO `paper` VALUES ('2', ' Deep learning ', '3', 'dldldl');
INSERT INTO `paper` VALUES ('3', ' big data ', '4', 'bdbdbd');

stay pojo New in package 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;
    }
 
}

among getter/setter Method can be used after defining private properties IDEA Shortcut keys provided ：ALT+Insert For quick addition

stay service New interface in package 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();
}

stay service Package under the new impl package , And create a new one in this package 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();
    }
 
}

stay dao New interface in package 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();
}

stay controller New in package 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";
    }
}

stay resource/mapper Package under the new PaperMapper.xml（mybatis frame mapper Agent development profile ）

<?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" resultMap="paperResultMap" 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>

stay resource/spring Create a new profile under the package ：spring-dao.xml , spring-mvc.xml , spring-service.xml

spring-dao.xml：（spring-mybatis Consolidation profile ）

<?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">
    <!--  Configuration integration mybatis The process  -->
    <!-- 1. Configuration database related parameters properties Properties of ：${url} -->
    <context:property-placeholder location="classpath:jdbc.properties"/>
 
    <!-- 2. Database connection pool  -->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <!--  Configure connection pool properties  -->
        <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 Private properties of connection pool  -->
        <property name="maxPoolSize" value="30"/>
        <property name="minPoolSize" value="10"/>
        <!--  Do not automatically close the connection commit -->
        <property name="autoCommitOnClose" value="false"/>
        <!--  Get connection timeout  -->
        <property name="checkoutTimeout" value="10000"/>
        <!--  Number of retries when get connection failed  -->
        <property name="acquireRetryAttempts" value="2"/>
    </bean>
 
    <!-- 3. To configure SqlSessionFactory object  -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!--  Inject the database connection pool  -->
        <property name="dataSource" ref="dataSource"/>
        <!--  To configure MyBaties Global profile :mybatis-config.xml -->
        <property name="configLocation" value="classpath:mybatis-config.xml"/>
        <!--  scanning pojo package   Use the alias  -->
        <property name="typeAliasesPackage" value="com.pojo"/>
        <!--  scanning sql The configuration file :mapper Needed xml file  -->
        <property name="mapperLocations" value="classpath:mapper/*.xml"/>
    </bean>
 
    <!-- 4. Configure scan Dao Interface package , Dynamic implementation Dao Interface , Injection into spring In the container  -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!--  Inject sqlSessionFactory -->
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
        <!--  Give need to scan Dao Interface package  -->
        <property name="basePackage" value="com.dao"/>
    </bean>
</beans>

spring-mvc.xml：（spring mvc The configuration file ）

<?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">
    <!--  To configure SpringMVC -->
    <!-- 1. Turn on SpringMVC Annotation model  -->
    <!--  Simplified configuration ：
        (1) Automatic registration DefaultAnootationHandlerMapping,AnotationMethodHandlerAdapter
        (2) Provide some columns ： Data binding , Of numbers and dates format @NumberFormat, @DateTimeFormat, xml,json Default read / write support 
    -->
    <mvc:annotation-driven />
 
    <!-- 2. Static resource default servlet To configure 
        (1) Add processing to static resources ：js,gif,png
        (2) Allow to use "/" Make an overall map 
     -->
    <mvc:default-servlet-handler/>
 
    <!-- 3. To configure jsp  Show ViewResolver -->
    <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. scanning web dependent bean -->
    <context:component-scan base-package="com.controller" />
</beans>

spring-service.xml：（service Layer configuration file ）

<?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">
    <!--  scanning service All types of annotations used under the package  -->
    <context:component-scan base-package="com.service" />
 
    <!--  Configure transaction manager  -->
    <bean id="transactionManager"
          class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <!--  Inject the database connection pool  -->
        <property name="dataSource" ref="dataSource" />
    </bean>
    <!--  Configure annotation based declarative transactions  -->
    <tx:annotation-driven transaction-manager="transactionManager" />
</beans>

stay jdbc.properties Configuration in file mysql database （ Database name here 、 Table name , user name , Remember to change the password ！！！）

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://127.0.0.1:3306/papersystem?useUnicode=true&characterEncoding=utf8
jdbc.username=root
jdbc.password=12345678

stay log4j.properties Configure log settings in file

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

stay mybatis-config.xml Configuration in file mybtis frame

<?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>
    <!--  Configure global properties  -->
    <settings>
        <!--  Use jdbc Of getGeneratedKeys Get database auto increment primary key value  -->
        <setting name="useGeneratedKeys" value="true" />
 
        <!--  Replace column names with column aliases   Default :true -->
        <setting name="useColumnLabel" value="true" />
 
        <!--  Turn on hump naming conversion :Table{create_time} -> Entity{createTime} -->
        <setting name="mapUnderscoreToCamelCase" value="true" />
    </settings>
</configuration>

To configure web.xml file

<!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>
    <!--  To configure springMVC Profile to load 
        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>
    <!--  Match all requests by default  -->
    <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>

index.jsp The file in WEB-INF/jsp New under package addPaper,jsp , appPaper.jsp , updatePaper.jsp

allPaper.jsp

<%@ 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 list </title>
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <!--  introduce  Bootstrap -->
    <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>
                     be based on SSM Framework management system ： Simple implementation 、 Delete 、 Change 、 check .
                </h1>
            </div>
        </div>
    </div>
 
    <div class="row clearfix">
        <div class="col-md-12 column">
            <div class="page-header">
                <h1>
                    <small> List of papers  ——  Show all papers </small>
                </h1>
            </div>
        </div>
    </div>
    <div class="row">
        <div class="col-md-4 column">
            <a class="btn btn-primary" href="${path}/paper/toAddPaper"> newly added </a>
        </div>
    </div>
    <div class="row clearfix">
        <div class="col-md-12 column">
            <table class="table table-hover table-striped">
                <thead>
                <tr>
                    <th> Thesis number </th>
                    <th> Title of thesis </th>
                    <th> Number of papers </th>
                    <th> Paper details </th>
                    <th> operation </th>
                </tr>
                </thead>
                <tbody>
                <c:forEach var="paper" items="${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}"> change </a> |
                            <a href="<%=appPath%>/paper/del/${paper.paperId}"> Delete </a>
                        </td>
                    </tr>
                </c:forEach>
                </tbody>
            </table>
        </div>
    </div>
</div>

addPaper,jsp： Paper add page

<%@ 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> New papers </title>
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <!--  introduce  Bootstrap -->
    <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>
                     be based on SSM Framework management system ： Simple implementation 、 Delete 、 Change 、 check .
                </h1>
            </div>
        </div>
    </div>
 
    <div class="row clearfix">
        <div class="col-md-12 column">
            <div class="page-header">
                <h1>
                    <small> New papers </small>
                </h1>
            </div>
        </div>
    </div>
    <form action="" name="userForm">
         Title of thesis ：<input type="text" name="paperName"><br><br><br>
         Number of papers ：<input type="text" name="paperNum"><br><br><br>
         Paper details ：<input type="text" name="paperDetail"><br><br><br>
        <input type="button" value=" add to " onclick="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： Paper change interface

<%@ 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> Modify the paper </title>
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <!--  introduce  Bootstrap -->
    <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>
                     be based on SSM Framework management system ： Simple implementation 、 Delete 、 Change 、 check .
                </h1>
            </div>
        </div>
    </div>
 
    <div class="row clearfix">
        <div class="col-md-12 column">
            <div class="page-header">
                <h1>
                    <small> Modify the paper </small>
                </h1>
            </div>
        </div>
    </div>
 
    <form action="" name="userForm">
        <input type="hidden" name="paperId" value="${paper.paperId}"/>
         Title of thesis ：<input type="text" name="paperName" value="${paper.paperName}"/>
         Number of papers ：<input type="text" name="paperNum" value="${paper.paperNum}"/>
         Paper details ：<input type="text" name="paperDetail" value="${paper.paperDetail }"/>
        <input type="button" value=" Submit " onclick="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>