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【SSM】我的第一个SSM整合项目
1.准备工作：导包，连接数据库。
<dependencies> <dependency> <groupId>junitgroupId> <artifactId>junitartifactId> <version>4.13.2version> <scope>testscope> dependency> <dependency> <groupId>mysqlgroupId> <artifactId>mysql-connector-javaartifactId> <version>8.0.29version> dependency> <dependency> <groupId>com.mchangegroupId> <artifactId>c3p0artifactId> <version>0.9.5.2version> dependency> <dependency> <groupId>javax.servletgroupId> <artifactId>servlet-apiartifactId> <version>2.5version> dependency> <dependency> <groupId>javax.servlet.jspgroupId> <artifactId>jsp-apiartifactId> <version>2.2version> dependency> <dependency> <groupId>javax.servletgroupId> <artifactId>jstlartifactId> <version>1.2version> dependency> <dependency> <groupId>org.mybatisgroupId> <artifactId>mybatisartifactId> <version>3.5.9version> dependency> <dependency> <groupId>org.mybatisgroupId> <artifactId>mybatis-springartifactId> <version>2.0.7version> dependency> <dependency> <groupId>org.springframeworkgroupId> <artifactId>spring-jdbcartifactId> <version>5.3.22version> dependency> <dependency> <groupId>org.springframeworkgroupId> <artifactId>spring-webmvcartifactId> <version>5.3.1version> dependency> <dependency> <groupId>org.projectlombokgroupId> <artifactId>lombokartifactId> <version>1.18.24version> dependency> <dependency> <groupId>ch.qos.logbackgroupId> <artifactId>logback-classicartifactId> <version>1.2.3version> dependency> dependencies>- 1
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数据库创建表
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 NULI 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,'从册车到跑路'), ( 3,'Linux',5,'从进门到进牢');- 1
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2.配置大于约定：配置
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> configuration>- 1
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m y b a t i s − c o n f i g . x m l mybatis-config.xml mybatis−config.xml
mybatis核心配置文件能做的事情，都移交了spring做了，因此能留下来的不多，这里保留了一个日志的设置。
<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"> <context:property-placeholder location="classpath:db.properties"/> <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource"> <property name="url" value="${jdbc.url}"/> <property name="driverClassName" value="${jdbc.driver}"/> <property name="username" value="${jdbc.username}"/> <property name="password" value="${jdbc.password}"/> bean> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource"/> <property name="configLocation" value="classpath:mybatis-config.xml"/> <property name="mapperLocations" value="classpath:com/kxy/mapper/*.xml"/> bean> <bean id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate"> <constructor-arg index="0" ref="sqlSessionFactory" /> bean> beans>- 1
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s p r i n g − d a o . x m l spring-dao.xml spring−dao.xml
<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"> <context:component-scan base-package="com.kxy.service"/> <bean id="bookServiceImp" class="com.kxy.service.BookServiceImp"> <property name="sqlSessionTemplate" ref="sqlSession"/> bean> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <constructor-arg ref="dataSource" /> bean> beans>- 1
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s p r i n g − s e r v i c e . x m l spring-service.xml spring−service.xml
这里的事务声明配置，其实可以不用配，只是为了满足ACID原则，使我们的项目更加完美，当然不配置事务不会影响这个项目的运行。
<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 https://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd"> <context:component-scan base-package="com.kxy.controller"/> <mvc:annotation-driven/> <mvc:default-servlet-handler/> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" id="internalResourceViewResolver"> <property name="prefix" value="/WEB-INF/jsp/"/> <property name="suffix" value=".jsp"/> bean> beans>- 1
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s p r i n g − m v c . x m l spring-mvc.xml spring−mvc.xml
<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>- 1
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a p p l i c a t i o n C o n t e x t . x m l applicationContext.xml applicationContext.xml
3.后端业务
1.mapper接口
public interface BookMapper { //增 int addBook(Books books); //删 int delBookById(@Param("bookID")int id); //改 int updateBook(Books books); //查 Books queryBookById(@Param("bookID")int id); List<Books> queryAllBooks(); List<Books> queryBooksByName(@Param("bookName")String bookName); }- 1
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2.业务sql
DOCTYPE mapper PUBLIC "-//mybatis.org//DTD mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> <mapper namespace="com.kxy.mapper.BookMapper"> <insert id="addBook" parameterType="com.kxy.pojo.Books"> insert into books (bookName, bookCounts, detail) values (#{bookName}, #{bookCounts}, #{detail}); insert> <delete id="delBookById" parameterType="int"> delete from books where bookID = #{bookID}; delete> <update id="updateBook" parameterType="com.kxy.pojo.Books"> update books set bookName = #{bookName}, bookCounts=#{bookCounts}, detail=#{detail} where bookID = #{bookID}; update> <select id="queryBookById" resultType="com.kxy.pojo.Books"> select * from books where bookID = #{bookID}; select> <select id="queryAllBooks" resultType="com.kxy.pojo.Books"> select * from books; select> <select id="queryBooksByName" resultType="com.kxy.pojo.Books"> select * from books where bookName like #{bookName}; select> mapper>- 1
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3.业务实现类
public interface BookService { //增 int addBook(Books books); //删 int delBookById(int id); //改 int updateBook(Books books); //查 Books queryBookById(int id); List<Books> queryAllBooks(); List<Books> queryBooksByName(String bookName); }- 1
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public class BookServiceImp extends SqlSessionDaoSupport implements BookService{ @Override public int addBook(Books books) { return getSqlSession().getMapper(BookMapper.class).addBook(books); } @Override public int delBookById(int id) { return getSqlSession().getMapper(BookMapper.class).delBookById(id); } @Override public int updateBook(Books books) { return getSqlSession().getMapper(BookMapper.class).updateBook(books); } @Override public Books queryBookById(int id) { return getSqlSession().getMapper(BookMapper.class).queryBookById(id); } @Override public List<Books> queryAllBooks() { return getSqlSession().getMapper(BookMapper.class).queryAllBooks(); } @Override public List<Books> queryBooksByName(String bookName) { return getSqlSession().getMapper(BookMapper.class).queryBooksByName(bookName); } }- 1
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使实现类继承SqlSessionDaoSupport，spring会自动帮我们把我们在spring.dao.xml里的sqlsessionTemplate注入到实现类，于是就可以使用getSqlSession()方法去获取对应的session。
4.controller类
处理器映射器会映射对应的url，适配器会适配处理器并且返回modelAndView，视图解析器会解析一个视图给前端控制器。controller类(处理器)封装了所有业务的url请求和视图。
@Controller @RequestMapping("/book") public class BookController { @Autowired @Qualifier("bookServiceImp") private BookService bookService; @RequestMapping("") public String index(){ return "index"; } @RequestMapping("/allBook") public String listBooks(Model model) { List<Books> list = bookService.queryAllBooks(); model.addAttribute("list", list); return "allBook"; } //跳转到添加书籍表单页面的请求 @RequestMapping("/toAddBook") public String toAddBook() { return "addBook"; } //添加书籍的请求（表单提交的请求） @RequestMapping("/addBook") public String addBook(Books books) { bookService.addBook(books); return "redirect:/book/allBook"; } //删除书籍的请求 @RequestMapping("/delBook") public String delBook(int id){ bookService.delBookById(id); return "redirect:/book/allBook"; } //跳转到更新书籍的请求 @RequestMapping("/toUpdateBook") public String toUpdateBook(int id,Model model) { Books books = bookService.queryBookById(id); model.addAttribute("books",books); return "updateBook"; } @RequestMapping("/updateBook") public String updateBook(Books books){ System.out.println("Book=>"+books); bookService.updateBook(books); return "redirect:/book/allBook"; } //全局搜索的请求 @RequestMapping("/searchBook") public String search(@RequestParam("bookName") String name,Model model){ List<Books> list = bookService.queryBooksByName(name); model.addAttribute("list",list); return "allBook"; } }- 1
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5.前端
<%-- Created by IntelliJ IDEA. User: kxy Date: 2022/9/7 Time: 18:00 To change this template use File | Settings | File Templates. --%> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>首页title> <link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/css/bootstrap.min.css"> head> <body> <a class="form-control" href="/book/allBook">欢迎进入书籍系统！a> body> html>- 1
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<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> <%-- Created by IntelliJ IDEA. User: kxy Date: 2022/9/6 Time: 16:38 To change this template use File | Settings | File Templates. --%> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>展示所有书籍title> <link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/css/bootstrap.min.css"> head> <body> <div class="container"> <div class="row clearfix" style="background-color: gainsboro"> <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> <br> <div class="row justify-content-between "> <div class="col-md-4 column"> <a class="btn btn-primary" href="${pageContext.request.contextPath}/book/toAddBook">新增书籍a> div> <div class="col-md-4 column " > <form action="/book/searchBook" method="get"style="display: flex"> <input type="text" class="form-control " placeholder="请输入搜索的书籍名称" name="bookName"> <input type="submit" class="btn btn-primary " value="搜索"> form> div> div> <br> <div class="row clearfix"> <div class="col-md-12 flex-column"> <table class="table table-hover table-striped"> <thead> <tr> <th>书籍编号th> <th>书籍名称th> <th>书籍数量th> <th>书籍描述th> <th style="text-align: center">操作th> tr> thead> <tbody> <c:forEach var="book" items="${list}"> <tr> <td>${book.bookID}td> <td>${book.bookName}td> <td>${book.bookCounts}td> <td>${book.detail}td> <td> <a href="/book/delBook?id=${book.bookID}">删除a> <a href="/book/toUpdateBook?id=${book.bookID}">修改a> td> tr> c:forEach> tbody> table> div> div> div> body> html>- 1
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a l l B o o k . j s p allBook.jsp allBook.jsp
<%-- Created by IntelliJ IDEA. User: kxy Date: 2022/9/6 Time: 17:47 To change this template use File | Settings | File Templates. --%> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>Titletitle> <link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/css/bootstrap.min.css"> head> <body> <div class="container"> <div class="row clearfix"> <div class="col-md-12 flex-column"> <div class="page-header"> <h1> <small>书籍列表 添加书籍small> h1> div> div> div> <form action="${pageContext.request.contextPath}/book/addBook" method="get"> <div class="form-group"> <label for="bkname">书籍名称label> <input type="text" class="form-control" name="bookName" id="bkname" required> div> <div class="form-group"> <label for="bkcounts">书籍数量label> <input type="text" class="form-control" name="bookCounts" id="bkcounts" required> div> <div class="form-group"> <label for="bkdetail">书籍描述label> <input type="text" class="form-control" name="detail" id="bkdetail" required> div> <div class="form-group"> <input type="submit" class="form-control" value="添加"> div> form> div> body> html>- 1
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a d d B o o k . j s p addBook.jsp addBook.jsp
<%-- Created by IntelliJ IDEA. User: kxy Date: 2022/9/6 Time: 19:27 To change this template use File | Settings | File Templates. --%> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>Titletitle> <link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/css/bootstrap.min.css"> head> <body> <div class="container"> <div class="row clearfix"> <div class="col-md-12 flex-column"> <div class="page-header"> <h1> <small>书籍列表 更新书籍small> h1> div> div> div> <form action="${pageContext.request.contextPath}/book/updateBook" method="get"> <input type="hidden" class="form-control" name="bookID" id="bkID" value="${books.bookID}" readonly="readonly"> <div class="form-group"> <label for="bkname">书籍名称label> <input type="text" class="form-control" value="${books.bookName}" name="bookName" id="bkname" required> div> <div class="form-group"> <label for="bkcounts">书籍数量label> <input type="text" class="form-control" value="${books.bookCounts}" name="bookCounts" id="bkcounts" required> div> <div class="form-group"> <label for="bkdetail">书籍描述label> <input type="text" class="form-control" value="${books.detail}" name="detail" id="bkdetail" required> div> <div class="form-group"> <input type="submit" class="form-control" value="提交"> div> form> div> body> html>- 1
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u p d a t e B o o k . j s p updateBook.jsp updateBook.jsp
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- 原文地址：https://blog.csdn.net/qq_53635765/article/details/126764658
