1、準備工作:
1.1、環境要求
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MySQL 5.7.19
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Tomcat 9
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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 '書id', `bookName` VARCHAR(100) NOT NULL COMMENT '書名', `bookCounts` INT(11) NOT NULL COMMENT '數量', `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,'從入門到放棄'), (2,'MySQL',10,'從刪庫到跑路'), (3,'Linux',5,'從進門到進牢');
1.3、基本專案環境搭建
1、新建一Maven專案!ssmbuild , 新增web的支援
<dependencies> <!--Junit--> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.12</version> </dependency> <!--資料庫驅動--> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.47</version> </dependency> <!-- 資料庫連線池 --> <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> </dependencies>
3、Maven資源過濾設定
<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>
4、建立基本結構和配置框架!
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com.cherriesovo.pojo
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com.cherriesovo.dao
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com.cherriesovo.service
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com.cherriesovo.controller
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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>
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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>
2、SSM整合
2.1、Mybatis層
1、資料庫配置檔案
jdbc.driver=com.mysql.jdbc.Driver jdbc.url=jdbc:mysql://localhost:3306/ssmbuild?useSSL=true&useUnicode=true&characterEncoding=utf8 jdbc.username=root jdbc.password=123456
2、IDEA關聯資料庫
3、編寫MyBatis的核心配置檔案
<?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> <!--配置資料來源——spring去做--> <typeAliases> <package name="com.cherriesovo.pojo"/> </typeAliases> <mappers> <mapper resource="com/cherriesovo/dao/BookMapper.xml"/> </mappers> </configuration>
4、編寫資料庫對應的實體類 com.cherriesovo.pojo.Books
package com.cherriesovo.pojo; import lombok.AllArgsConstructor; import lombok.Data; import lombok.NoArgsConstructor; @Data @AllArgsConstructor @NoArgsConstructor public class Books { private int bookID; private String bookName; private int bookCounts; private String detail; }
5、編寫Dao層的 Mapper介面!
package com.cherriesovo.dao; import com.cherriesovo.pojo.Books; import org.apache.ibatis.annotations.Param; import java.util.List; public interface BookMapper { //增加一個Book int addBook(Books book); //根據id刪除一個Book int deleteBookById(@Param("bookID") int id); //更新Book int updateBook(Books books); //根據id查詢,返回一個Book Books queryBookById(@Param("bookID") int id); //查詢全部Book,返回list集合 List<Books> queryAllBook(); //按名字查詢Book Books queryBookByName(@Param("bookName") String bookName); }
6、編寫介面對應的 BookMapper.xml 檔案。需要匯入MyBatis的包;
<?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.cherriesovo.dao.BookMapper"> <!--增加一個Book--> <insert id="addBook" parameterType="Books"> insert into ssmbuild.books(bookName,bookCounts,detail) values (#{bookName}, #{bookCounts}, #{detail}) </insert> <!--根據id刪除一個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> <!--根據id查詢,返回一個Book--> <select id="queryBookById" resultType="Books"> select * from ssmbuild.books where bookID = #{bookID} </select> <!--查詢全部Book--> <select id="queryAllBook" resultType="Books"> SELECT * from ssmbuild.books </select> <!--根據名字查詢,返回一個Book--> <select id="queryBookByName" resultType="Books"> select * from ssmbuild.books where bookName = #{bookName} </select> </mapper>
7、編寫Service層的介面和實現類
介面:
package com.cherriesovo.service; import com.cherriesovo.pojo.Books; import java.util.List; //BookService:底下需要去實現,呼叫dao層 public interface BookService { //增加一個Book int addBook(Books book); //根據id刪除一個Book int deleteBookById(int id); //更新Book int updateBook(Books books); //根據id查詢,返回一個Book Books queryBookById(int id); //查詢全部Book,返回list集合 List<Books> queryAllBook(); //根據name查詢,返回一個Book Books queryBookByName(String bookName); }
實現類:
package com.cherriesovo.service; import com.cherriesovo.dao.BookMapper; import com.cherriesovo.pojo.Books; import java.util.List; public class BookServiceImpl implements BookService { //service是呼叫dao層的操作,設定一個set介面,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 Books queryBookByName(String bookName) { return bookMapper.queryBookByName(bookName); } }
1、配置Spring整合MyBatis,我們這裡資料來源使用c3p0連線池;
2、我們去編寫Spring整合Mybatis的相關的配置檔案;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"> <!-- 配置整合mybatis --> <!-- 1.關聯資料庫檔案 --> <context:property-placeholder location="classpath:database.properties"/> <!-- 2.資料庫連線池 --> <!--資料庫連線池 dbcp 半自動化操作 不能自動連線 c3p0 自動化操作(自動的載入配置檔案 並且設定到物件裡面) --> <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"> <!-- 配置連線池屬性 --> <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連線池的私有屬性 --> <property name="maxPoolSize" value="30"/> <property name="minPoolSize" value="10"/> <!-- 關閉連線後不自動commit --> <property name="autoCommitOnClose" value="false"/> <!-- 獲取連線超時時間 --> <property name="checkoutTimeout" value="10000"/> <!-- 當獲取連線失敗重試次數 --> <property name="acquireRetryAttempts" value="2"/> </bean> <!-- 3.配置SqlSessionFactory物件 --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <!-- 注入資料庫連線池 --> <property name="dataSource" ref="dataSource"/> <!-- 配置MyBaties全域性配置檔案:mybatis-config.xml --> <property name="configLocation" value="classpath:mybatis-config.xml"/> </bean> <!-- 4.配置掃描Dao介面包,動態實現Dao介面注入到spring容器中 --> <!--解釋 :https://www.cnblogs.com/jpfss/p/7799806.html--> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <!-- 注入sqlSessionFactory --> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/> <!-- 給出需要掃描Dao介面包 --> <property name="basePackage" value="com.cherriesovo.dao"/> </bean> </beans>
<?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"> <!-- 掃描service相關的bean --> <context:component-scan base-package="com.cherriesovo.service" /> <!--BookServiceImpl注入到IOC容器中--> <bean id="BookServiceImpl" class="com.cherriesovo.service.BookServiceImpl"> <property name="bookMapper" ref="bookMapper"/> </bean> <!-- 配置事務管理器 --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <!-- 注入資料庫連線池 --> <property name="dataSource" ref="dataSource" /> </bean> </beans>
<?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:我們這裡載入的是總的配置檔案,之前被這裡坑了!--> <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過期時間--> <session-config> <session-timeout>15</session-timeout> </session-config> </web-app>
<?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.開啟SpringMVC註解驅動 --> <mvc:annotation-driven /> <!-- 2.靜態資源預設servlet配置--> <mvc:default-servlet-handler/> <!-- 3.配置jsp 顯示ViewResolver檢視解析器 --> <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.掃描web相關的bean --> <context:component-scan base-package="com.cherriesovo.controller" /> </beans>
<?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>
@Controller @RequestMapping("/book") public class BookController { @Autowired @Qualifier("BookServiceImpl") private BookService bookService; //查詢所有書籍並返回書籍展示頁 @RequestMapping("/allBook") public String list(Model model) { List<Books> list = bookService.queryAllBook(); //呼叫查詢書籍方法 model.addAttribute("list", list); return "allBook"; } }
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %> <!DOCTYPE HTML> <html> <head> <title>首頁</title> <style type="text/css"> 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> <body> <h3> <a href="${pageContext.request.contextPath}/book/allBook">點選進入列表頁</a> </h3> </body> </html>
<%-- Created by IntelliJ IDEA. User: CherriesOvO Date: 2024/3/14 Time: 10:06 To change this template use File | Settings | File Templates. --%> <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>書籍列表</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- 引入 Bootstrap --> <link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet"> </head> <body> <%--使用Bootstrap樣式--%> <div class="container"> <div class="row clearfix"> <div class="col-md-12 column"> <!--將螢幕分為12份--> <div class="page-header"> <h1> <small>書籍列表 —— 顯示所有書籍</small> </h1> </div> </div> </div> <div class="row"> <div class="col-md-4 column"> <a class="btn btn-primary" href="${pageContext.request.contextPath}/book/toAddBook">新增</a> <a class="btn btn-primary" href="${pageContext.request.contextPath}/book/allBook">顯示全部</a> </div> <div class="col-md-4 column"> <div class="col-md-4 column"> <form class="form-inline" action="${pageContext.request.contextPath}/book/queryBook" method="post" style="float: right;width: 300px;"> <span style="color: red;font-weight: bold">${error}</span> <input type="text" name="queryBookName" class="form-control" placeholder="請輸入要查詢的名稱"> <input type="submit" value="提交" class="btn btn-primary"> </form> </div> </div> <%--書籍展示--%> <div class="row clearfix"> <div class="col-md-12 column"> <table class="table table-hover table-striped"> <thead> <tr> <th>書籍編號</th> <th>書籍名字</th> <th>書籍數量</th> <th>書籍詳情</th> <th>操作</th> </tr> </thead> <%--書籍需要從資料庫裡面查詢出來,從queryAllBook()方法返回的list中遍歷出來:froeach--%> <tbody> <%--從item中遍歷,每一項稱為book,用${requestScope.get()取出資料--%> <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=${book.getBookID()}">更改</a> | <a href="${pageContext.request.contextPath}/book/del/${book.getBookID()}">刪除</a> </td> </tr> </c:forEach> </tbody> </table> </div> </div> </div>
3.4、BookController 類編寫 , 方法二:新增書籍
//跳轉新增書籍頁面
@RequestMapping("/toAddBook")
public String toAddPaper() {
return "addBook";
}
// 新增書籍頁面
@RequestMapping("/addBook")
public String addPaper(Books books) {
System.out.println(books);
bookService.addBook(books);
return "redirect:/book/allBook";
}
3.5、新增書籍頁面:
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>新增書籍</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- 引入 Bootstrap --> <link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet"> </head> <body> <div class="container"> <div class="row clearfix"> <div class="col-md-12 column"> <div class="page-header"> <h1> <small>新增書籍</small> </h1> </div> </div> </div> <form action="${pageContext.request.contextPath}/book/addBook" method="post"> 書籍名稱:<input type="text" name="bookName"><br><br><br> 書籍數量:<input type="text" name="bookCounts"><br><br><br> 書籍詳情:<input type="text" name="detail"><br><br><br> <input type="submit" value="新增"> </form> </div>
3.6、BookController 類編寫 , 方法三:修改書籍
//修改書籍 @RequestMapping("/toUpdateBook") public String toUpdateBook(Model model, int id) { Books books = bookService.queryBookById(id); System.out.println(books); model.addAttribute("book",books ); //將查到的書籍的資料帶到前端 return "updateBook"; } @RequestMapping("/updateBook") public String updateBook(Model model, Books book) { //Books用於接收前端的book System.out.println(book); bookService.updateBook(book); Books books = bookService.queryBookById(book.getBookID()); //調業務層去修改 model.addAttribute("books", books); //將修改後的書籍資料帶到前端 return "redirect:/book/allBook"; }
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>修改資訊</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="stylesheet"> </head> <body> <div class="container"> <div class="row clearfix"> <div class="col-md-12 column"> <div class="page-header"> <h1> <small>修改資訊</small> </h1> </div> </div> </div> <form action="${pageContext.request.contextPath}/book/updateBook" method="post"> <!--book的資料已經被帶到了前端,使用value設定預設值展示要修改書籍的資料--> <%--配置隱藏域,呼叫book物件的getBookID()方法來獲取書籍的 ID,並將其作為隱藏欄位的值,提交表單時傳遞--%> <input type="hidden" name="bookID" value="${book.getBookID()}"/> 書籍名稱:<input type="text" name="bookName" value="${book.getBookName()}"/> 書籍數量:<input type="text" name="bookCounts" value="${book.getBookCounts()}"/> 書籍詳情:<input type="text" name="detail" value="${book.getDetail() }"/> <input type="submit" value="提交"/> </form> </div>
3.8、BookController 類編寫 , 方法四:刪除書籍
@RequestMapping("/del/{bookId}") public String deleteBook(@PathVariable("bookId") int id) { bookService.deleteBookById(id); return "redirect:/book/allBook"; }
<a href="${pageContext.request.contextPath}/book/del/${book.getBookID()}">刪除</a>
BookController 類編寫 , 方法五:查詢書籍
//查詢書籍 @RequestMapping("/queryBook") public String queryBook(String queryBookName,Model model) { Books books = bookService.queryBookByName(queryBookName); //建立一個新的列表,將查詢出來的資料放到該列表 List<Books> list = new ArrayList<Books>(); list.add(books); if(books==null){ list = bookService.queryAllBook(); model.addAttribute("error","未查到"); } model.addAttribute("list", list); return "allBook"; }
4.0、查詢書籍前端
<div class="col-md-4 column"> <form class="form-inline" action="${pageContext.request.contextPath}/book/queryBook" method="post" style="float: right;width: 300px;"> <span style="color: red;font-weight: bold">${error}</span> <input type="text" name="queryBookName" class="form-control" placeholder="請輸入要查詢的名稱"> <input type="submit" value="提交" class="btn btn-primary"> </form> </div>
最後配置Tomcat,進行執行!