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前言
书接前文，昨天带着大家下载且配置了maven，以及在idea中创建maven项目，今天，我们就结合ssm框架，在idea中实现一个增删改查案例。
昨天的文章：手把手教你搭建Maven项目
01
配置pom文件
通常，我们需要使用ssm框架的时候，需要加载一系列的jar包，在未使用maven的时候，我们则采用的是将所需jar包统统复制到项目的lib目录中，现在我们不必那样做了，只需要简单的在pom文件中配置即可。
那么，怎么配置呢？
我们以mysql的驱动jar为例（其他jar包配置方式一样，可执行按此配置），mysql的驱动jar包我采用的是：mysql-connector-java-8.0.23，配置方式如下：
1）maven官网为我们提供了jar包在pom文件中的配置方式，打开官网：https://search.maven.org/，我们在输入框中输入需要配置的jar包名，如下：
可以在左边框中的下拉列表里选择版本，在右边的Apache Maven下面，复制所有代码。
复制到项目中pom文件的这里：
如果你不知道ssm需要哪些jar包，可以去百度搜索，pom中配置方式是一样的，在这就不一一列举了，下面是整个pom.xml文件的代码：
-
<?xml version=
"1.0" encoding=
"UTF-8"?>
-
-
<project xmlns=
"http://maven.apache.org/POM/4.0.0" xmlns:xsi=
"http://www.w3.org/2001/XMLSchema-instance"
-
xsi:schemaLocation=
"http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-
<modelVersion>
4.0
.0</modelVersion>
-
-
<groupId>com.xiongxiong</groupId>
-
<artifactId>BookManageSys</artifactId>
-
<version>
1.0-SNAPSHOT</version>
-
<packaging>war</packaging>
-
-
<name>BookManageSys Maven Webapp</name>
-
<!-- FIXME change it to the project
's website -->
-
<url>http://www.example.com</url>
-
-
<properties>
-
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-
<maven.compiler.source>1.7</maven.compiler.source>
-
<maven.compiler.target>1.7</maven.compiler.target>
-
</properties>
-
-
<dependencies>
-
<!--配置jar包-->
-
<dependency>
-
<groupId>junit</groupId>
-
<artifactId>junit</artifactId>
-
<version>4.11</version>
-
<scope>test</scope>
-
</dependency>
-
-
<dependency>
-
<groupId>mysql</groupId>
-
<artifactId>mysql-connector-java</artifactId>
-
<version>8.0.23</version>
-
</dependency>
-
<!--spring的jar包=-->
-
<!--springmvc的jar包-->
-
<dependency>
-
<groupId>javaee</groupId>
-
<artifactId>javaee-api</artifactId>
-
<version>5</version>
-
</dependency>
-
-
<dependency>
-
<groupId>org.springframework</groupId>
-
<artifactId>spring-core</artifactId>
-
<version>4.2.5.RELEASE</version>
-
</dependency>
-
-
-
<dependency>
-
<groupId>org.springframework</groupId>
-
<artifactId>spring-beans</artifactId>
-
<version>4.2.2.RELEASE</version>
-
</dependency>
-
-
<dependency>
-
<groupId>org.springframework</groupId>
-
<artifactId>spring-context</artifactId>
-
<version>4.2.2.RELEASE</version>
-
</dependency>
-
-
<dependency>
-
<groupId>org.springframework</groupId>
-
<artifactId>spring-tx</artifactId>
-
<version>4.1.9.RELEASE</version>
-
</dependency>
-
-
<dependency>
-
<groupId>org.springframework</groupId>
-
<artifactId>spring-aspects</artifactId>
-
<version>4.2.1.RELEASE</version>
-
</dependency>
-
-
<dependency>
-
<groupId>org.springframework</groupId>
-
<artifactId>spring-context-support</artifactId>
-
<version>4.1.9.RELEASE</version>
-
</dependency>
-
-
<dependency>
-
<groupId>org.springframework</groupId>
-
<artifactId>spring-jdbc</artifactId>
-
<version>4.2.3.release</version>
-
</dependency>
-
-
<dependency>
-
<groupId>org.springframework</groupId>
-
<artifactId>spring-test</artifactId>
-
<version>4.1.9.RELEASE</version>
-
</dependency>
-
-
<dependency>
-
<groupId>org.springframework</groupId>
-
<artifactId>spring-web</artifactId>
-
<version>4.2.3.RELEASE</version>
-
</dependency>
-
-
<dependency>
-
<groupId>org.springframework</groupId>
-
<artifactId>spring-webmvc</artifactId>
-
<version>4.1.9.RELEASE</version>
-
</dependency>
-
-
<dependency>
-
<groupId>org.mybatis</groupId>
-
<artifactId>mybatis</artifactId>
-
<version>3.2.2</version>
-
</dependency>
-
-
<dependency>
-
<groupId>org.mybatis</groupId>
-
<artifactId>mybatis-spring</artifactId>
-
<version>1.3.0</version>
-
</dependency>
-
-
<dependency>
-
<groupId>org.javassist</groupId>
-
<artifactId>javassist</artifactId>
-
<version>3.17.1-GA</version>
-
</dependency>
-
-
<dependency>
-
<groupId>cglib</groupId>
-
<artifactId>cglib</artifactId>
-
<version>2.2.2</version>
-
</dependency>
-
-
<dependency>
-
<groupId>c3p0</groupId>
-
<artifactId>c3p0</artifactId>
-
<version>0.9.1.2</version>
-
</dependency>
-
-
<!--加载jstl的包-->
-
<dependency>
-
<groupId>jstl</groupId>
-
<artifactId>jstl</artifactId>
-
<version>1.2</version>
-
</dependency>
-
</dependencies>
-
-
-
<build>
-
<finalName>BookManageSys</finalName>
-
<pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
-
<plugins>
-
<plugin>
-
<artifactId>maven-clean-plugin</artifactId>
-
<version>3.1.0</version>
-
</plugin>
-
<!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->
-
<plugin>
-
<artifactId>maven-resources-plugin</artifactId>
-
<version>3.0.2</version>
-
</plugin>
-
<plugin>
-
<artifactId>maven-compiler-plugin</artifactId>
-
<version>3.8.0</version>
-
</plugin>
-
<plugin>
-
<artifactId>maven-surefire-plugin</artifactId>
-
<version>2.22.1</version>
-
</plugin>
-
<plugin>
-
<artifactId>maven-war-plugin</artifactId>
-
<version>3.2.2</version>
-
</plugin>
-
<plugin>
-
<artifactId>maven-install-plugin</artifactId>
-
<version>2.5.2</version>
-
</plugin>
-
<plugin>
-
<artifactId>maven-deploy-plugin</artifactId>
-
<version>2.8.2</version>
-
</plugin>
-
</plugins>
-
</pluginManagement>
-
</build>
-
</project>
这是最后导入的jar包：
02
在main目录中创建resources资源文件夹
该资源文件夹用来存放ssm的配置文件，applicationContext.xml,springmvc-servlet.xml,mybatis-config.xml。
各配置文件代码如下：
applicationContext.xml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: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-3.1.xsd
-
http://www.springframework.org/schema/mvc
-
http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd
-
http://www.springframework.org/schema/context
-
http://www.springframework.org/schema/context/spring-context-3.1.xsd
-
">
-
-
<!-- 配置数据源-->
-
<bean id=
"dataSource" class=
"org.springframework.jdbc.datasource.DriverManagerDataSource">
-
<property name=
"driverClassName" value=
"com.mysql.jdbc.Driver"></property>
-
<property name=
"url" value=
"jdbc:mysql://localhost:3306/schooldb"></property>
-
<property name=
"username" value=
"root"></property>
-
<property name=
"password" value=
"root"></property>
-
</bean>
-
-
<!--sqlSessionFactory -->
-
<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=
"mapperLocations">
-
<list>
-
<value>classpath:com/dao
/*.xml</value>
-
</list>
-
</property>
-
</bean>
-
-
<!-- 配置自动映射器 -->
-
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
-
<property name="basePackage" value="com.dao"></property>
-
</bean>
-
-
<!-- 扫描所有注解信息 -->
-
<context:component-scan base-package="com.dao,com.service,com.web"/>
-
<mvc:annotation-driven/>
-
-
</beans>
springmvc-servlet.xml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:p=
"http://www.springframework.org/schema/p"
-
xmlns:aop=
"http://www.springframework.org/schema/aop"
-
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-3.1.xsd
-
http://www.springframework.org/schema/p
-
http://www.springframework.org/schema/p/spring-p-3.1.xsd
-
http://www.springframework.org/schema/aop
-
http://www.springframework.org/schema/aop/spring-aop-3.1.xsd
-
http://www.springframework.org/schema/mvc
-
http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd
-
http://www.springframework.org/schema/context
-
http://www.springframework.org/schema/context/spring-context-3.1.xsd
-
">
-
-
<!-- 扫描注解 -->
-
<context:component-scan base-
package=
"com.web,com.dao,com.service"/>
-
<mvc:annotation-driven/>
-
<!--扫描静态资源文件-->
-
<mvc:
default-servlet-handler/>
-
-
<!-- 配置前缀和后缀 -->
-
<bean class=
"org.springframework.web.servlet.view.InternalResourceViewResolver">
-
<property name=
"prefix" value=
"/"></property>
-
<property name=
"suffix" value=
".jsp"></property>
-
</bean>
-
-
</beans>
mybatis-config.xml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>
-
-
<settings>
-
<!-- 打印sql语句 -->
-
<setting name=
"logImpl" value=
"STDOUT_LOGGING"/>
-
</settings>
-
<!-- 起别名 -->
-
<typeAliases>
-
<
package name=
"com.entity"/>
-
</typeAliases>
-
-
</configuration>
03
配置web.xml文件
web.xml文件所在的路径：src/main/webapp/WEB/INF/wen.xml
代码如下：
-
<!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_4_0.xsd"
-
version=
"4.0">
-
<display-name>Archetype Created Web Application</display-name>
-
<welcome-file-list>
-
<welcome-file>/</welcome-file>
-
</welcome-file-list>
-
-
<!-- springmvc的配置 -->
-
<servlet>
-
<servlet-name>springmvc</servlet-name>
-
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
-
<init-param>
-
<param-name>contextConfigLocation</param-name>
-
<param-value>classpath:springmvc-servlet.xml</param-value>
-
</init-param>
-
<load-on-startup>
1</load-on-startup>
-
</servlet>
-
<servlet-mapping>
-
<servlet-name>springmvc</servlet-name>
-
<url-pattern>/</url-pattern>
-
</servlet-mapping>
-
-
<!-- spring -->
-
<context-param>
-
<param-name>contextConfigLocation</param-name>
-
<param-value>classpath:applicationContext.xml</param-value>
-
</context-param>
-
<!-- 监听配置 -->
-
<listener>
-
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
-
</listener>
-
-
<!-- 解决springmvc传递值乱码问题 -->
-
<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>
-
<init-param>
-
<param-name>forceEncoding</param-name>
-
<param-value>
true</param-value>
-
</init-param>
-
</filter>
-
<filter-mapping>
-
<filter-name>encodingFilter</filter-name>
-
<url-pattern>
/*</url-pattern>
-
</filter-mapping>
-
</web-app>
04
创建src资源资源文件夹
在main文件夹中创建资源文件夹src,且在里面创建实体层、Dao层、Service层和web层。
下面我们来在src中创建包com（包名随便起）,在com中分别创建entity、dao、service以及web包（Package）,分别在各个包中创建对应的类，其目录结构如下：
下面是各个类的代码：
BookManage.java：
-
package com.entity;
-
-
import org.springframework.format.annotation.DateTimeFormat;
-
-
import java.util.Date;
-
-
public class BookManage {
-
-
private
int bid;
-
private String bname;
-
private String bauthor;
-
-
@DateTimeFormat(pattern =
"yyyy-MM-dd")
-
private Date btime;
-
private
int btype;
-
-
public
int getBid() {
-
return bid;
-
}
-
-
public void setBid(
int bid) {
-
this.bid = bid;
-
}
-
-
public String getBname() {
-
return bname;
-
}
-
-
public void setBname(String bname) {
-
this.bname = bname;
-
}
-
-
public String getBauthor() {
-
return bauthor;
-
}
-
-
public void setBauthor(String bauthor) {
-
this.bauthor = bauthor;
-
}
-
-
public Date getBtime() {
-
return btime;
-
}
-
-
public void setBtime(Date btime) {
-
this.btime = btime;
-
}
-
-
public
int getBtype() {
-
return btype;
-
}
-
-
public void setBtype(
int btype) {
-
this.btype = btype;
-
}
-
}
BookManageMapper.java
-
package com.dao;
-
-
import com.entity.BookManage;
-
-
import java.util.List;
-
-
public
interface BookManageMapper {
-
-
//查询全部
-
List<BookManage> findBookAll();
-
-
//添加
-
int addBook(BookManage bookManage);
-
-
//删除
-
int delBook(
int bid);
-
}
BookManageMapper.xml
-
<?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.BookManageMapper">
-
-
<!-- 查询全部 -->
-
<
select id=
"findBookAll" resultType=
"BookManage">
-
select * from BookManage;
-
</
select>
-
<!-- 添加 -->
-
<insert id=
"addBook" parameterType=
"BookManage">
-
insert into bookmanage (bname,bauthor,btime,btype)
-
value(#{bname},#{bauthor},#{btime},#{btype});
-
</insert>
-
-
<!-- 删除 -->
-
<
delete id=
"delBook" parameterType=
"int">
-
delete from BookManage where bid = #{bid};
-
</
delete>
-
-
</mapper>
IBookManageService.java
-
package com.service;
-
-
import com.entity.BookManage;
-
-
import java.util.List;
-
-
public
interface IBookManageService {
-
-
-
//查询全部
-
List<BookManage> findBookAll();
-
-
//添加
-
int addBook(BookManage bookManage);
-
-
//删除
-
int delBook(
int bid);
-
}
BookManageServiceImpl.java
-
package com.service.impl;
-
-
-
import com.dao.BookManageMapper;
-
import com.entity.BookManage;
-
import com.service.IBookManageService;
-
import org.springframework.beans.factory.annotation.Autowired;
-
import org.springframework.stereotype.Service;
-
-
-
-
import java.util.List;
-
-
@Service(
"bookManageService")
-
public class BookManageServiceImpl implements IBookManageService {
-
-
@Autowired
-
private BookManageMapper bookManageMapper;
-
-
@Override
-
public List<BookManage> findBookAll() {
-
return bookManageMapper.findBookAll();
-
}
-
-
@Override
-
public
int addBook(BookManage bookManage) {
-
return bookManageMapper.addBook(bookManage);
-
}
-
-
@Override
-
public
int delBook(
int bid) {
-
return bookManageMapper.delBook(bid);
-
}
-
-
public BookManageMapper getBookManageMapper() {
-
return bookManageMapper;
-
}
-
-
public void setBookManageMapper(BookManageMapper bookManageMapper) {
-
this.bookManageMapper = bookManageMapper;
-
}
-
}
IndexController.java
-
package com.web;
-
-
import com.entity.BookManage;
-
import com.service.IBookManageService;
-
import org.springframework.beans.factory.annotation.Autowired;
-
import org.springframework.stereotype.Controller;
-
import org.springframework.ui.Model;
-
import org.springframework.web.bind.annotation.RequestMapping;
-
-
import java.util.List;
-
-
@Controller
-
@RequestMapping(
"/")
-
public class IndexController {
-
-
//创建Service的对象
-
@Autowired
-
private IBookManageService bookManageService;
-
-
//默认进入首页
-
@RequestMapping(
"/")
-
public String index(Model model){
-
-
List<BookManage> bookManageList =
-
bookManageService.findBookAll();
-
model.addAttribute(
"bookManageList",bookManageList);
-
return
"index";
-
}
-
-
//删除
-
@RequestMapping(
"delBook")
-
public String delBook(Model model,
int bid){
-
bookManageService.delBook(bid);
-
index(model);
-
return
"index";
-
}
-
//添加
-
@RequestMapping(
"addBook")
-
public String addBook(BookManage bookManage,Model model){
-
bookManageService.addBook(bookManage);
-
index(model);
-
return
"index";
-
}
-
-
-
public IBookManageService getBookManageService() {
-
return bookManageService;
-
}
-
-
public void setBookManageService(IBookManageService bookManageService) {
-
this.bookManageService = bookManageService;
-
}
-
}
05
引入jQuery环境
将jquery的环境拷贝到项目中的webapp下：
06
首页
修改index.jsp,使其实现进入页面即查询数据库中所有数据功能，代码如下：
-
<%--
-
Created by IntelliJ IDEA.
-
User:
24519
-
Date:
2021/
1/
20
-
Time:
10:
38
-
To change this template use File | Settings | File Templates.
-
--%>
-
<%@ page isELIgnored=
"false"%>
-
<%@ page contentType=
"text/html;charset=UTF-8" language=
"java" %>
-
<%@taglib prefix=
"c" uri=
"http://java.sun.com/jsp/jstl/core" %>
-
<%@taglib prefix=
"f" uri=
"http://java.sun.com/jsp/jstl/fmt" %>
-
<html>
-
<head>
-
<title>首页</title>
-
</head>
-
<body>
-
<h1>图书信息</h1>
-
<table border=
"1">
-
<tr>
-
<td>图书名称</td>
-
<td>图书作者</td>
-
<td>购买时间</td>
-
<td>图书分类</td>
-
<td>操作</td>
-
</tr>
-
<c:forEach items=
"${bookManageList}"
var=
"book">
-
<tr>
-
<td>${book.bname}</td>
-
<td>${book.bauthor}</td>
-
<td>
-
<f:formatDate value=
"${book.btime}" pattern=
"yyyy-MM-dd"></f:formatDate>
-
</td>
-
<td>
-
<c:
if test=
"${book.btype==1}">
-
计算机/软件
-
</c:
if>
-
<c:
if test=
"${book.btype==2}">
-
小说/文摘
-
</c:
if>
-
<c:
if test=
"${book.btype==3}">
-
杂项
-
</c:
if>
-
</td>
-
<td><a href=
"delBook?bid=${book.bid}">删除</a></td>
-
</tr>
-
</c:forEach>
-
-
</table>
-
<a href=
"addBook.jsp" style=
"color:red">新增图书信息</a>
-
<script src=
"js/jquery-1.12.4.js"
type=
"text/javascript"></script>
-
<script
type=
"text/javascript">
-
$(function(){
-
$(
"tr:even").css(
"background",
"green");
-
$(
"tr:first").css(
"background",
"blue");
-
});
-
</script>
-
</body>
-
</html>
07
添加图书的页面
创建添加数据的页面addBook.jsp,代码如下：
注意，addBook.jsp和index.jsp都需要放在webapp目录下。
08
配置tomcat
配置tomcat
测试发现，正常运行。
最后附数据库脚本代码：
-
/*
-
SQLyog Professional v12.08 (32 bit)
-
MySQL - 5.5.27 : Database - schooldb
-
*********************************************************************
-
*/
-
-
-
/*!40101 SET NAMES utf8 */;
-
-
/*!40101 SET SQL_MODE=''*/;
-
-
/*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */;
-
/*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */;
-
/*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */;
-
/*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0 */;
-
CREATE DATABASE
/*!32312 IF NOT EXISTS*/
`schooldb`
/*!40100 DEFAULT CHARACTER SET utf8 */;
-
-
USE
`schooldb`;
-
-
/*Table structure for table `bookmanage` */
-
-
DROP TABLE IF EXISTS
`bookmanage`;
-
-
CREATE TABLE
`bookmanage` (
-
`bid`
int(
11) NOT NULL AUTO_INCREMENT,
-
`bname` varchar(
40) NOT NULL,
-
`bauthor` varchar(
40) NOT NULL,
-
`btime` datetime NOT NULL,
-
`btype`
int(
11) NOT NULL,
-
PRIMARY KEY (
`bid`)
-
) ENGINE=InnoDB AUTO_INCREMENT=
5 DEFAULT CHARSET=utf8;
-
-
/*Data for the table `bookmanage` */
-
-
insert into
`bookmanage`(
`bid`,
`bname`,
`bauthor`,
`btime`,
`btype`) values (
1,
'三国演义',
'罗贯中',
'2021-09-08 00:00:00',
2),(
2,
'水浒传',
'施耐庵',
'2021-09-08 00:00:00',
2),(
3,
'狂人日记',
'魯迅',
'2021-09-08 00:00:00',
3),(
4,
'改善java的151个建议',
'秦少波',
'2021-09-08 00:00:00',
1);
-
-
/*!40101 SET SQL_MODE=@OLD_SQL_MODE */;
-
/*!40014 SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS */;
-
/*!40014 SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS */;
-
/*!40111 SET SQL_NOTES=@OLD_SQL_NOTES */;
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转载：https://blog.csdn.net/qq_34137397/article/details/113980504
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