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=utf8insert 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'); |
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@noargsconstructorpublic class books { private int bookid; private string bookname; private int bookcounts; private string detail;} |
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> |
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> |
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.driverjdbc.url=jdbc:mysql://localhost:3306/ssmbuild?usessl=true&useunicode=true&characterencoding=utf8jdbc.username=rootjdbc.password=123456 |
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);} |
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> |
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);} |
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); }} |
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> |
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> |
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> |
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> |
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> |
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"; }} |
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="${pagecontext.request.contextpath}/book/allbook" rel="external nofollow" rel="external nofollow" >进入到书籍页面</a></h3></body></html> |
编写书籍列表页面allbook.jsp
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<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %><%@ page contenttype="text/html;charset=utf-8" language="java" %><html><head> <title>书籍列表</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- 引入 bootstrap --> <link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="stylesheet"></head><body><div class="container"> <div class="row clearfix"> <div class="col-md-12 column"> <div class="page-header"> <h1> <small>书籍列表 —— 显示所有书籍</small> </h1> </div> </div> </div> <div class="row"> <div class="col-md-4 column"> <a class="btn btn-primary" href="${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> |
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="${pagecontext.request.contextpath}/book/addbook" method="post"> 书籍名称：<input type="text" name="bookname"><br><br><br> 书籍数量：<input type="text" name="bookcounts"><br><br><br> 书籍详情：<input type="text" name="detail"><br><br><br> <input type="submit" value="添加"> </form></div> |
修改书籍页面 updatebook.jsp
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<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %><%@ page contenttype="text/html;charset=utf-8" language="java" %><html><head> <title>修改信息</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- 引入 bootstrap --> <link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="stylesheet"></head><body><div class="container"> <div class="row clearfix"> <div class="col-md-12 column"> <div class="page-header"> <h1> <small>修改信息</small> </h1> </div> </div> </div> <form action="${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> |
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
