环境:
idea
MySQL 5.1.47
Tomcat 9
Maven 3.6
以下是pom依赖
<?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.he</groupId> <artifactId>SsmBuild</artifactId> <version>1.0-SNAPSHOT</version> <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> <!--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.aspectj</groupId> <artifactId>aspectjweaver</artifactId> <version>1.9.5</version> </dependency> </dependencies> <!--资源过滤--> <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> </project>
基本流程:
搭建数据库
创建项目结构
配置mybatis层,编写dao层,service层
配置spring层
配置springmvc层
编写controller层跟视图层
1.搭建数据库
CREATE DATABASE `ssmbuild`;
USE `ssmbuild`;
DROP TABLE IF EXISTS `books`;
CREATE TABLE `books` (
`bookID` INT(10) NOT NULL AUTO_INCREMENT COMMENT '书id',
`bookName` VARCHAR(100) NOT NULL COMMENT '书名',
`bookCounts` INT(11) NOT NULL COMMENT '数量',
`detail` VARCHAR(200) NOT NULL COMMENT '描述',
KEY `bookID` (`bookID`)
) ENGINE=INNODB DEFAULT CHARSET=utf8
INSERT INTO `books`(`bookID`,`bookName`,`bookCounts`,`detail`)VALUES
(1,'Java',1,'从入门到放弃'),
(2,'MySQL',10,'从删库到跑路'),
(3,'Linux',5,'从进门到进牢');
2.建立基本框架
com.he.controller
com.he.dao
com.he.pojo
com.he.service
mybatis-config.xml
<?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> </configuration>
applicationContext.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" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd"> </beans>
3.Mybatis层
1.数据库配置文件db.peoperties
driver=com.mysql.jdbc.Driver url=jdbc:mysql://localhost:3366/SsmBuild?useSSL=true&useUnicode=true&characterEncoding=utf8 usernamec3p0=root password=123456
2.编写Mybatis核心配置文件
<?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> <!--日志--> <setting value="STDOUT_LOGGING" name="logImpl"/> </settings> <typeAliases> <package name="com.he.pojo"/> </typeAliases> <mappers> <mapper class="com.he.dao.BookMapper"/> </mappers> </configuration>
3.编写数据库对应的实体类com.he.pojo.Books
package com.he.pojo; public class Books { private int bookID; private String bookName; private int bookCounts; private String detail; public Books() { } public Books(int bookID, String bookName, int bookCounts, String detail) { this.bookID = bookID; this.bookName = bookName; this.bookCounts = bookCounts; this.detail = detail; } public int getBookID() { return bookID; } public void setBookID(int bookID) { this.bookID = bookID; } public String getBookName() { return bookName; } public void setBookName(String bookName) { this.bookName = bookName; } public int getBookCounts() { return bookCounts; } public void setBookCounts(int bookCounts) { this.bookCounts = bookCounts; } public String getDetail() { return detail; } public void setDetail(String detail) { this.detail = detail; } @Override public String toString() { return "Books{" + "bookID=" + bookID + ", bookName='" + bookName + '\'' + ", bookCounts=" + bookCounts + ", detail='" + detail + '\'' + '}'; } }
4.编写dao层BookMapper接口
package com.he.dao; import com.he.pojo.Books; import org.apache.ibatis.annotations.Param; import java.util.List; 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); //查找一本书 Books queryBookById(@Param("bookID")int id); //查询全部的书 List<Books> queryAllBook(); //根据书名查询一本书 List<Books> queryBookByName(@Param("bookName")String bookName); }
5.编写对应的Mapper.xml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.he.dao.BookMapper"> <!--增加一个Book--> <insert id="addBook" parameterType="Books"> insert into ssmbuild.books(bookName,bookCounts,detail) values (#{bookName}, #{bookCounts}, #{detail}) </insert> <!--根据id删除一个Book--> <delete id="deleteBookById" parameterType="int"> delete from ssmbuild.books where bookID=#{bookID} </delete> <!--更新Book--> <update id="updateBook" parameterType="Books"> update ssmbuild.books set bookName = #{bookName},bookCounts = #{bookCounts},detail = #{detail} where bookID = #{bookID} </update> <!--根据id查询,返回一个Book--> <select id="queryBookById" resultType="Books"> select * from ssmbuild.books where bookID = #{bookID} </select> <!--查询全部Book--> <select id="queryAllBook" resultType="Books"> SELECT * from ssmbuild.books </select> <!--根据书名查询书--> <select id="queryBookByName" resultType="Books"> select * from ssmbuild.books where bookName=#{bookName} </select> </mapper>
6.编写service层的接口和实现类
接口
package com.he.service; import com.he.pojo.Books; import org.apache.ibatis.annotations.Param; import java.util.List; //BookService:底下需要去实现,调用dao层 public interface BookService { //增加一个Book int addBook(Books book); //根据id删除一个Book int deleteBookById(int id); //更新Book int updateBook(Books books); //根据id查询,返回一个Book Books queryBookById(int id); //查询全部Book,返回list集合 List<Books> queryAllBook(); //根据书名查询一本书 List<Books> queryBookByName(String bookName); }
实现类
package com.he.service; import com.he.service.BookService; import com.he.dao.BookMapper; import com.he.pojo.Books; import java.util.List; public class BookServiceImpl implements BookService { //调用dao层的操作,设置一个set接口,方便Spring管理 private BookMapper bookMapper; public void setBookMapper(BookMapper bookMapper) { this.bookMapper = bookMapper; } public int addBook(Books book) { return bookMapper.addBook(book); } public int deleteBookById(int id) { return bookMapper.deleteBookById(id); } public int updateBook(Books books) { return bookMapper.updateBook(books); } public Books queryBookById(int id) { return bookMapper.queryBookById(id); } public List<Books> queryAllBook() { return bookMapper.queryAllBook(); } public List<Books> queryBookByName(String bookName) { return bookMapper.queryBookByName(bookName); } }
4.Spring层,这里使用的c3p0连接池
1.编写spring整合mybatis的配置文件:spring-dao.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" 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"> <!--整合配置Mybatis--> <!--1.关联数据库配置--> <context:property-placeholder location="classpath:db.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="${driver}"/> <property name="jdbcUrl" value="${url}"/> <property name="user" value="${usernamec3p0}"/> <property name="password" value="${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MyBatis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 --> <!--解释 : https://www.cnblogs.com/jpfss/p/7799806.html--> <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.he.dao"/> </bean> </beans>
2.Spring整合service层,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" xmlns:aop="http://www.springframework.org/schema/aop" 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 http://www.springframework.org/schema/aop https://www.springframework.org/schema/aop/spring-aop.xsd"> <!-- 1.扫描service相关的bean --> <context:component-scan base-package="com.he.service" /> <!-- 2.BookServiceImpl注入到IOC容器中,(控制反转,依赖注入)--> <bean id="BookServiceImpl" class="com.he.service.BookServiceImpl"> <property name="bookMapper" ref="bookMapper"/> </bean> <!-- 3.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> <!-- 4.aop事务支持--> <!-- 配置AOP实现事务织入--> <!-- 配置事务通知--> <tx:advice id="txAdvice" transaction-manager="transactionManager"> <tx:attributes> <!--给所有方法配置事务--> <tx:method name="*" propagation="REQUIRED"/> </tx:attributes> </tx:advice> <!--配置事务切入--> <aop:config> <aop:pointcut id="txPointCut" expression="execution(* com.he.dao.*.*(..))"/> <aop:advisor advice-ref="txAdvice" pointcut-ref="txPointCut"/> </aop:config> </beans>
5.SpringMVC层
1.web.xml
<?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> <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> <!--过滤乱码--> <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>
2.spring-mvc.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: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.he.controller" /> </beans>
3.Spring配置整合文件,applicationContext.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" 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>
6.配置文件结束,编写controller层跟视图层
1.controller层
package com.he.controller; import com.he.pojo.Books; import com.he.service.BookService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.factory.annotation.Qualifier; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.PathVariable; import org.springframework.web.bind.annotation.RequestMapping; import java.util.List; @Controller @RequestMapping("/book") public class BookController { //controller调service层 @Autowired @Qualifier("BookServiceImpl") private BookService bookService; //查询全部书籍,返回页面 @RequestMapping("/allBook") public String list(Model model){ List<Books> books = bookService.queryAllBook(); model.addAttribute("books",books); 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(books); bookService.addBook(books); return "redirect:/book/allBook";//重定向到@RequestMapping("/allBook") } //跳转到修改页面 @RequestMapping("/toUpdateBook") public String toUpdateBook(int id,Model model){ Books books = bookService.queryBookById(id); model.addAttribute("QBook",books); return "updateBook"; } //修改书籍,返回页面 @RequestMapping("/updateBook") public String updateBook(Books books){ System.out.println("updateBooks===>"+books); bookService.updateBook(books); return "redirect:/book/allBook";//重定向到@RequestMapping("/allBook") } //删除书籍 //RustFul风格删除 @RequestMapping("deleteBook/{bookID}") public String deleteBook(@PathVariable("bookID") int id){ bookService.deleteBookById(id); return "redirect:/book/allBook"; } //查询书籍 @RequestMapping("/queryBook") public String queryBook(String queryBookName,Model model){ List<Books> books = bookService.queryBookByName(queryBookName); if (books.size()==0){ model.addAttribute("error","未查到该书籍"); } model.addAttribute("books",books); return "allBook"; } }
2.视图层
首页index.jsp
<%-- Created by IntelliJ IDEA. User: 86153 Date: 2020/3/15 Time: 10:17 To change this template use File | Settings | File Templates. --%> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>首页</title> <style> a{ text-decoration:none; color: aqua; font-size: 19px; } h3{ width: 180px; height: 30px; margin: 100px auto; text-align: center; line-height: 38px; background: deeppink; } </style> </head> <body> <h3> <a href="${pageContext.request.contextPath}/book/allBook">进去书籍页面</a> </h3> </body> </html>
书籍列表页面 allbook.jsp
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>书籍</title> <!-- 引入Bootstrap(美化界面) --> <link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet"> </head> <body> <div class="row clearfix"> <div class="col-md-12 column"> <div class="page-header"> <h1> <small>书籍列表 —— 显示所有书籍</small> </h1> </div> </div> </div> <div class="row"> <div class="col-md-4 column"> <%--toAddBook--%> <a class="btn btn-primary" href="${pageContext.request.contextPath}/book/toAddBook">新增书籍</a> <a class="btn btn-primary" href="${pageContext.request.contextPath}/book/allBook">显示全部书籍</a> </div> <div class="col-md-8 column"> <%--查询书籍--%> <form class="form-inline" style="float: right" method="post" class="form-select-button" action="${pageContext.request.contextPath}/book/queryBook" > <span style="color: red;font-weight: bold">${error}</span> <input type="text" name="queryBookName" class="form-control" placeholder="请输入要查询的书籍名称"> <input type="submit" value="查询" class="btn btn-primary"> </form> </div> </div> <div class="row clearfix"> <div class="col-md-12 column"> <table class="table table-hover table-striped"> <thead> <tr> <th>书籍编号</th> <th>书籍名字</th> <th>书籍数量</th> <th>书籍详情</th> <th>操作</th> </tr> </thead> <%--书籍从数据库中查询出来--%> <tbody> <c:forEach var="book" items="${requestScope.get('books')}"> <tr> <td>${book.bookID}</td> <td>${book.bookName}</td> <td>${book.bookCounts}</td> <td>${book.detail}</td> <td> <a href="${pageContext.request.contextPath}/book/toUpdateBook?id=${book.bookID}">更改</a> | <a href="${pageContext.request.contextPath}/book/deleteBook/${book.bookID}">删除</a> </td> </tr> </c:forEach> </tbody> </table> </div> </div> </body> </html>
添加书记页面addBook.jsp
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>增加书籍</title> <!-- 引入Bootstrap(美化界面) --> <link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet"> </head> <body> <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="${pageContext.request.contextPath}/book/addBook" method="post"> <label>书籍名称:</label><input type="text" name="bookName" required><br><br><br> <label>书籍数量:</label><input type="text" name="bookCounts" required><br><br><br> <label>书籍描述:</label><input type="text" name="detail" required><br><br><br> <input type="submit" value="添加"> </form> </body> </html>
修改书记页面updateBook.jsp
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>修改书籍</title> <!-- 引入Bootstrap(美化界面) --> <link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet"> </head> <body> <div class="row clearfix"> <div class="col-md-12 column"> <div class="page-header"> <h1> <small>修改书籍</small> </h1> </div> </div> </div> <form action="${pageContext.request.contextPath}/book/updateBook" method="post"> <%--出现的问题页面不更新,首先考虑事务问题,但配置完后依旧失败--%> <%--看一下SQL语句,结果是因为没有传ID,SQL执行失败导致的--%> <%--前端传递隐藏域--%> <input type="hidden" name="bookID" value="${QBook.bookID}"> <label>书籍名称:</label><input type="text" value="${QBook.bookName}" name="bookName" required><br><br><br> <label>书籍数量:</label><input type="text" value="${QBook.bookCounts}" name="bookCounts" required><br><br><br> <label>书籍描述:</label><input type="text" value="${QBook.detail}" name="detail" required><br><br><br> <input type="submit" value="修改"> </form> </body> </html>
7.运行tomcat
项目结构图