學完ssm後就可以練手的小項目，圖書管理有login、CURD這四個功能。第一次寫完整的項目，儘量寫的很詳細，自己也從新梳理一遍
搭建環境：maven+eclipse+ssm+mysql
項目結構圖：
pom.xml文件內容如下
1 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 2 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"> 3 <modelVersion>4.0.0</modelVersion> 4 <groupId>com.li</groupId> 5 <artifactId>bookstore</artifactId> 6 <packaging>war</packaging> 7 <version>0.0.1-SNAPSHOT</version> 8 <name>bookstore Maven Webapp</name> 9 <url>http://maven.apache.org</url> 10 11 <properties> 12 <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> 13 <spring.version>4.3.0.RELEASE</spring.version> 14 </properties> 15 16 <dependencies> 17 <!--Spring框架核心庫 --> 18 <dependency> 19 <groupId>org.springframework</groupId> 20 <artifactId>spring-context</artifactId> 21 <version>${spring.version}</version> 22 </dependency> 23 <!-- aspectJ AOP 織入器 --> 24 <dependency> 25 <groupId>org.aspectj</groupId> 26 <artifactId>aspectjweaver</artifactId> 27 <version>1.8.9</version> 28 </dependency> 29 <!-- Spring Web --> 30 <dependency> 31 <groupId>org.springframework</groupId> 32 <artifactId>spring-web</artifactId> 33 <version>${spring.version}</version> 34 </dependency> 35 <dependency> 36 <groupId>org.springframework</groupId> 37 <artifactId>spring-webmvc</artifactId> 38 <version>${spring.version}</version> 39 </dependency> 40 <!--mybatis-spring適配器 --> 41 <dependency> 42 <groupId>org.mybatis</groupId> 43 <artifactId>mybatis-spring</artifactId> 44 <version>1.3.0</version> 45 </dependency> 46 <!--Spring java數據庫訪問包，在本例中主要用於提供數據源 --> 47 <dependency> 48 <groupId>org.springframework</groupId> 49 <artifactId>spring-jdbc</artifactId> 50 <version>${spring.version}</version> 51 </dependency> 52 <!--mysql數據庫驅動 --> 53 <dependency> 54 <groupId>mysql</groupId> 55 <artifactId>mysql-connector-java</artifactId> 56 <version>5.1.38</version> 57 </dependency> 58 <!--log4j日誌包 --> 59 <dependency> 60 <groupId>org.apache.logging.log4j</groupId> 61 <artifactId>log4j-core</artifactId> 62 <version>2.6.1</version> 63 </dependency> 64 <!-- mybatis ORM框架 --> 65 <dependency> 66 <groupId>org.mybatis</groupId> 67 <artifactId>mybatis</artifactId> 68 <version>3.4.1</version> 69 </dependency> 70 <!-- JUnit單元測試工具 --> 71 <dependency> 72 <groupId>junit</groupId> 73 <artifactId>junit</artifactId> 74 <version>4.10</version> 75 </dependency> 76 <!--c3p0 連接池 --> 77 <dependency> 78 <groupId>c3p0</groupId> 79 <artifactId>c3p0</artifactId> 80 <version>0.9.1.2</version> 81 </dependency> 82 <!-- jstl --> 83 <dependency> 84 <groupId>javax.servlet</groupId> 85 <artifactId>jstl</artifactId> 86 <version>1.2</version> 87 </dependency> 88 </dependencies> 89 </project>
數據庫內創建兩個表，一個用於登錄，一個用於對應book，sql腳本如下
1 USE `my_db`; 2 3 /*Table structure for table `books` */ 4 5 DROP TABLE IF EXISTS `books`; 6 7 CREATE TABLE `books` ( 8 `id` int(11) NOT NULL AUTO_INCREMENT COMMENT '編號', 9 `title` varchar(100) NOT NULL COMMENT '書名', 10 `price` decimal(10,2) DEFAULT NULL COMMENT '價格', 11 `publishDate` timestamp NULL DEFAULT CURRENT_TIMESTAMP COMMENT '出版日期', 12 PRIMARY KEY (`id`), 13 UNIQUE KEY `title` (`title`) 14 ) ENGINE=InnoDB AUTO_INCREMENT=15 DEFAULT CHARSET=utf8; 15 16 /*Data for the table `books` */ 17 18 insert into `books`(`id`,`title`,`price`,`publishDate`) values (14,'HeadFirst Java','56.00','1990-12-12 00:00:00'); 19 20 /*Table structure for table `myuser` */ 21 22 DROP TABLE IF EXISTS `myuser`; 23 24 CREATE TABLE `myuser` ( 25 `id` int(11) NOT NULL, 26 `username` varchar(20) DEFAULT NULL, 27 `age` int(11) DEFAULT NULL, 28 `password` varchar(20) DEFAULT NULL, 29 PRIMARY KEY (`id`) 30 ) ENGINE=InnoDB DEFAULT CHARSET=utf8; 31 32 /*Data for the table `myuser` */ 33 34 insert into `myuser`(`id`,`username`,`age`,`password`) values (1,'aaa',20,'123'),(2,'bbb',23,'234'),(3,'ccc',12,'234'),(5,'poo',23,'876');
然後創建與數據表對應的類，User.java 、Books.java
1 package com.pojo; 2 3 import java.text.ParseException; 4 import java.text.SimpleDateFormat; 5 import java.util.Date; 6 7 public class Books { 8 9 private int id; 10 private String title; 11 private double price; 12 private Date publishDate; 13 14 public Books() { 15 super(); 16 } 17 18 public Books(int id, String title, double price, Date publishDate) { 19 super(); 20 this.id = id; 21 this.title = title; 22 this.price = price; 23 this.publishDate = publishDate; 24 } 25 @Override 26 public String toString() { 27 return "Books [id=" + id + ", title=" + title + ", price=" + price + ", publishDate=" + publishDate + "]"; 28 } 29 public int getId() { 30 return id; 31 } 32 public void setId(int id) { 33 this.id = id; 34 } 35 public String getTitle() { 36 return title; 37 } 38 public void setTitle(String title) { 39 this.title = title; 40 } 41 public double getPrice() { 42 return price; 43 } 44 public void setPrice(double price) { 45 this.price = price; 46 } 47 public Date getPublishDate() { 48 return publishDate; 49 } 50 51 public void setPublishDate(String str) { 52 SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); 53 Date publishDate; 54 try { 55 publishDate = sdf.parse(str); 56 this.publishDate = publishDate; 57 } catch (ParseException e) { 58 e.printStackTrace(); 59 } 60 } 61 62 }
1 package com.pojo; 2 3 public class User { 4 5 private int id; 6 private String username; 7 private String password; 8 private int age; 9 public int getId() { 10 return id; 11 } 12 public void setId(int id) { 13 this.id = id; 14 } 15 public String getUsername() { 16 return username; 17 } 18 public void setUsername(String username) { 19 this.username = username; 20 } 21 public String getPassword() { 22 return password; 23 } 24 public void setPassword(String password) { 25 this.password = password; 26 } 27 public int getAge() { 28 return age; 29 } 30 public void setAge(int age) { 31 this.age = age; 32 } 33 @Override 34 public String toString() { 35 return "User [id=" + id + ", username=" + username + ", password=" + password + ", age=" + age + "]"; 36 } 37 38 39 40 }
根據mybatis的用法需要創建對應的接口，調用數據庫來實現相對應的功能。UserDao.java、BooksDao.java
1 package com.dao; 2 3 import java.util.List; 4 5 import com.pojo.Books; 6 7 public interface BooksDao { 8 9 public Books getBooksById(int id); 10 11 public int updateBooks(Books book); 12 13 public int addBooks(Books book); 14 15 public int deleteBooksById(int id); 16 17 public List<Books> getBooksAll(); 18 19 20 }
1 package com.dao; 2 3 import com.pojo.User; 4 5 public interface UserDao { 6 7 public User getUser(String username); 8 9 }
然後創建與其對應的mapper文件，每個mapper文件的命名空間需要對應自己的接口類。這樣mybatis就會調用數據庫來創建相應的對象賦給接口類。BooksMapper.xml、UserMapper.xml。
1 <?xml version="1.0" encoding="UTF-8"?> 2 <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" 3 "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> 4 5 <!--命名空間應該是對應接口的包名+接口名 --> 6 <mapper namespace="com.dao.UserDao"> 7 8 <select id="getUser" parameterType="string" resultType="User"> 9 select * from myuser where username=#{username} 10 </select> 11 12 </mapper>
1 <?xml version="1.0" encoding="UTF-8"?> 2 <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" 3 "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> 4 5 <!--命名空間應該是對應接口的包名+接口名 --> 6 <mapper namespace="com.dao.BooksDao"> 7 8 <insert id="addBooks"> 9 insert into books (title,price,publishDate) values(#{title},#{price},#{publishDate}) 10 </insert> 11 12 <update id="updateBooks"> 13 update books set title=#{title},price=#{price},publishDate=#{publishDate} where id=#{id} 14 </update> 15 16 <delete id="deleteBooksById"> 17 delete from books where id=#{id} 18 </delete> 19 20 <select id="getBooksById" parameterType="int" resultType="Books"> 21 select * from books where id=#{id} 22 </select> 23 24 <select id="getBooksAll" resultType="Books"> 25 select * from books 26 </select> 27 28 </mapper>
接着創建service層，也是分別創建UserService.java、BooksService.java。
1 package com.service; 2 3 import java.util.List; 4 5 import javax.annotation.Resource; 6 7 import org.springframework.stereotype.Service; 8 9 import com.dao.BooksDao; 10 import com.pojo.Books; 11 12 @Service 13 public class BooksService { 14 15 @Resource 16 private BooksDao booksDao; 17 18 public int deleteBooksById(int id) { 19 return booksDao.deleteBooksById(id); 20 } 21 22 public int addBooks(Books book) { 23 return booksDao.addBooks(book); 24 } 25 26 public int updateBooks(Books book) { 27 return booksDao.updateBooks(book); 28 } 29 30 public Books getBooksById(int id) { 31 Books books = booksDao.getBooksById(id); 32 return books; 33 } 34 35 public List<Books> getBooksAll(){ 36 List<Books> list = booksDao.getBooksAll(); 37 return list; 38 } 39 40 }
1 package com.service; 2 3 import javax.annotation.Resource; 4 5 import org.springframework.stereotype.Service; 6 7 import com.dao.UserDao; 8 import com.pojo.User; 9 10 @Service 11 public class UserService { 12 13 @Resource 14 private UserDao userDao; 15 16 public User getUser(String username) { 17 18 User user = userDao.getUser(username); 19 return user; 20 21 } 22 23 }
添加spring-mybatis整合的文件，文件名還是叫applicationContext.xml
1 <?xml version="1.0" encoding="UTF-8"?> 2 <beans xmlns="http://www.springframework.org/schema/beans" 3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 4 xmlns:p="http://www.springframework.org/schema/p" 5 xmlns:aop="http://www.springframework.org/schema/aop" 6 xmlns:context="http://www.springframework.org/schema/context" 7 xmlns:tx="http://www.springframework.org/schema/tx" 8 xsi:schemaLocation="http://www.springframework.org/schema/beans 9 http://www.springframework.org/schema/beans/spring-beans.xsd 10 http://www.springframework.org/schema/context 11 http://www.springframework.org/schema/context/spring-context-4.3.xsd 12 http://www.springframework.org/schema/aop 13 http://www.springframework.org/schema/aop/spring-aop-4.3.xsd 14 http://www.springframework.org/schema/tx 15 http://www.springframework.org/schema/tx/spring-tx-4.3.xsd"> 16 17 <!--1 引入屬性文件，在配置中佔位使用 --> 18 <context:property-placeholder location="classpath*:db.properties" /> 19 20 <!--2 配置C3P0數據源 --> 21 <bean id="datasource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close"> 22 <!--驅動類名 --> 23 <property name="driverClass" value="${jdbc.driver}" /> 24 <!-- url --> 25 <property name="jdbcUrl" value="${jdbc.url}" /> 26 <!-- 用戶名 --> 27 <property name="user" value="${jdbc.uid}" /> 28 <!-- 密碼 --> 29 <property name="password" value="${jdbc.pwd}" /> 30 31 <!-- 當連接池中的連接耗盡的時候c3p0一次同時獲取的連接數 --> 32 <property name="acquireIncrement" value="5"></property> 33 <!-- 初始連接池大小 --> 34 <property name="initialPoolSize" value="10"></property> 35 <!-- 連接池中連接最小個數 --> 36 <property name="minPoolSize" value="5"></property> 37 <!-- 連接池中連接最大個數 --> 38 <property name="maxPoolSize" value="20"></property> 39 </bean> 40 41 <!--3 會話工廠bean sqlSessionFactoryBean --> 42 <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> 43 <!-- 數據源 --> 44 <property name="dataSource" ref="datasource"></property> 45 <!-- 別名 --> 46 <property name="typeAliasesPackage" value="com.pojo"></property> 47 <!-- sql映射文件路徑 --> 48 <property name="mapperLocations" value="classpath*:com/dao/*Mapper.xml"></property> 49 </bean> 50 51 <!--4 自動掃描對象關係映射 --> 52 <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> 53 <!--指定會話工廠，如果當前上下文中只定義了一個則該屬性可省去 --> 54 <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property> 55 <!-- 指定要自動掃描接口的基礎包，實現接口 --> 56 <property name="basePackage" value="com.dao"></property> 57 </bean> 58 59 <!--5 聲明式事務管理 --> 60 <!--定義事物管理器，由spring管理事務 --> 61 <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> 62 <property name="dataSource" ref="datasource"></property> 63 </bean> 64 <!--支持註解驅動的事務管理，指定事務管理器 --> 65 <tx:annotation-driven transaction-manager="transactionManager"/> 66 67 <!--6 容器自動掃描IOC組件 --> 68 <context:component-scan base-package="com"></context:component-scan> 69 70 <!--7 aspectj支持自動代理實現AOP功能 --> 71 <aop:aspectj-autoproxy proxy-target-class="true"></aop:aspectj-autoproxy> 72 </beans>
添加db.properties
1 #mysql jdbc 2 jdbc.driver=com.mysql.jdbc.Driver 3 jdbc.url=jdbc:mysql://localhost:3306/my_db?useUnicode=true&characterEncoding=UTF-8 4 jdbc.uid=root 5 jdbc.pwd=123456
創建單元測試類來測試是否能夠調用數據庫。UserServiceTest.java、BooksServiceTest.java
1 package com.service; 2 3 import org.junit.BeforeClass; 4 import org.junit.Test; 5 import org.springframework.context.ApplicationContext; 6 import org.springframework.context.support.ClassPathXmlApplicationContext; 7 8 import com.pojo.User; 9 10 public class UserServiceTest { 11 12 private static UserService service; 13 14 //測試前需加載的方法 15 @BeforeClass 16 public static void before(){ 17 ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml"); 18 service = context.getBean(UserService.class); 19 } 20 21 @Test 22 public void testGetUser() { 23 24 User user = service.getUser("aaa"); 25 26 System.out.println(user.toString()); 27 28 } 29 30 }
1 package com.service; 2 3 import static org.junit.Assert.*; 4 5 import java.util.List; 6 7 import org.junit.BeforeClass; 8 import org.junit.Test; 9 import org.springframework.context.ApplicationContext; 10 import org.springframework.context.support.ClassPathXmlApplicationContext; 11 12 import com.dao.BooksDao; 13 import com.pojo.Books; 14 15 public class BooksServiceTest { 16 17 private static BooksDao booksDao; 18 19 @BeforeClass 20 public static void before(){ 21 ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml"); 22 booksDao = context.getBean(BooksDao.class); 23 } 24 25 @Test 26 public void testDeleteBooksById() { 27 fail("Not yet implemented"); 28 } 29 30 @Test 31 public void testAddBooks() { 32 fail("Not yet implemented"); 33 } 34 35 @Test 36 public void testUpdateBooks() { 37 fail("Not yet implemented"); 38 } 39 40 @Test 41 public void testGetBooksById() { 42 fail("Not yet implemented"); 43 } 44 45 @Test 46 public void testGetBooksAll() { 47 List<Books> list = booksDao.getBooksAll(); 48 for(Books book : list) { 49 System.out.println(book.toString()); 50 } 51 } 52 53 }
如果測試發現沒有問題，則就可以開始實現前端了。先實現登錄功能。用用戶輸入的用戶名作爲查詢條件，得到數據表內與其對應的密碼，該密碼若與用戶輸入的密碼不同則提示“用戶名或密碼錯誤”再重新輸入，若相同則轉發到信息展示頁面。
此時需要配置DispatcherServlet，在web.xml中進行配置。
1 <?xml version="1.0" encoding="UTF-8"?> 2 <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 3 xmlns="http://java.sun.com/xml/ns/javaee" 4 xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" 5 id="WebApp_ID" version="3.0" > 6 7 <servlet> 8 <servlet-name>controller</servlet-name> 9 <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> 10 <load-on-startup>1</load-on-startup> 11 </servlet> 12 <servlet-mapping> 13 <servlet-name>controller</servlet-name> 14 <url-pattern>/</url-pattern> 15 </servlet-mapping> 16 17 <listener> 18 <description>contextLoaderListener</description> 19 <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> 20 </listener> 21 <context-param> 22 <description>ContextLoaderListener</description> 23 <param-name>contextConfigLocation</param-name> 24 <param-value>classpath*:applicationContext.xml</param-value> 25 </context-param> 26 </web-app>
默認需要配置DispatcherServlet的<name>-servlet.xml作爲視圖解析器的配置文件，controller-servlet.xml。放在WEB-INF下。
1 <?xml version="1.0" encoding="UTF-8"?> 2 <beans xmlns="http://www.springframework.org/schema/beans" 3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 4 xmlns:aop="http://www.springframework.org/schema/aop" 5 xmlns:c="http://www.springframework.org/schema/c" 6 xmlns:cache="http://www.springframework.org/schema/cache" 7 xmlns:context="http://www.springframework.org/schema/context" 8 xmlns:jdbc="http://www.springframework.org/schema/jdbc" 9 xmlns:jee="http://www.springframework.org/schema/jee" 10 xmlns:lang="http://www.springframework.org/schema/lang" 11 xmlns:mvc="http://www.springframework.org/schema/mvc" 12 xmlns:p="http://www.springframework.org/schema/p" 13 xmlns:task="http://www.springframework.org/schema/task" 14 xmlns:tx="http://www.springframework.org/schema/tx" 15 xmlns:util="http://www.springframework.org/schema/util" 16 xsi:schemaLocation="http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-4.3.xsd 17 http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd 18 http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd 19 http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd 20 http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.3.xsd 21 http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-4.3.xsd 22 http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache-4.3.xsd 23 http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-4.3.xsd 24 http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd 25 http://www.springframework.org/schema/lang http://www.springframework.org/schema/lang/spring-lang-4.3.xsd 26 http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd "> 27 28 <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" 29 p:prefix="/" 30 p:suffix=".jsp" 31 /> 32 33 <context:component-scan base-package="com.controller"></context:component-scan> 34 35 36 </beans>
配置登錄用的controller，LoginController.java。使用springmvc的參數綁定標籤獲取jsp表單中的數據
1 package com.controller; 2 3 import java.util.List; 4 5 import org.springframework.beans.factory.annotation.Autowired; 6 import org.springframework.stereotype.Controller; 7 import org.springframework.web.bind.annotation.RequestMapping; 8 import org.springframework.web.bind.annotation.RequestMethod; 9 import org.springframework.web.bind.annotation.RequestParam; 10 import org.springframework.web.servlet.ModelAndView; 11 12 import com.pojo.Books; 13 import com.pojo.User; 14 import com.service.BooksService; 15 import com.service.UserService; 16 17 @Controller 18 @RequestMapping("/bookstore") 19 public class LoginController { 20 21 @Autowired 22 private UserService userService; 23 24 @Autowired 25 private BooksService booksService; 26 27 @RequestMapping(path = "/login" ,method = RequestMethod.POST) 28 public ModelAndView userLogin(@RequestParam("username")String username,@RequestParam("password")String password) { 29 30 ModelAndView modelAndView = new ModelAndView(); 31 32 User user = userService.getUser(username); 33 34 List<Books> books = booksService.getBooksAll(); 35 36 if(password.equals(user.getPassword())){ 37 modelAndView.setViewName("ListBook"); 38 modelAndView.addObject("books", books); 39 } 40 else { 41 modelAndView.setViewName("login"); 42 modelAndView.addObject("user", user); 43 modelAndView.addObject("message", "用戶名或密碼錯誤"); 44 } 45 46 return modelAndView; 47 48 } 49 50 }
再添加登錄頁面login.jsp，裏面使用jstl標籤獲取ModelAndView內的信息
1 <%@ page language="java" contentType="text/html; charset=UTF-8" 2 pageEncoding="UTF-8"%> 3 <%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %> 4 <!DOCTYPE html> 5 <html> 6 <head> 7 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 8 <link href="styles/main.css" type="text/css" rel="stylesheet" /> 9 <title>系統登錄</title> 10 </head> 11 <body> 12 13 <div class="main"> 14 <h2 class="title"><span>系統登錄</span></h2> 15 <form action="<c:url value="/bookstore/login" />" method="post"> 16 <p>用戶名: <input type="text" name="username" value="${user.getUsername()}" /></p> 17 <p>密 碼: <input type="password" name="password" value="${user.getPassword() }" /></p> 18 <input type = "submit" name="login" value ="登錄"/> 19 </form> 20 <p style="color: red">${message}</p> 21 </div> 22 23 </body> 24 </html>
登錄實現後就開始實現CURD功能。先是ListBook.jsp，獲取數據庫內的所有數據，從login.jsp轉發到該頁面。
1 <%@ page language="java" contentType="text/html; charset=UTF-8" 2 pageEncoding="UTF-8"%> 3 <%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%> 4 <%@taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %> 5 <!DOCTYPE html> 6 <html> 7 <head> 8 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 9 <link href="styles/main.css" type="text/css" rel="stylesheet" /> 10 <title>圖書管理</title> 11 </head> 12 <body> 13 <div class="main"> 14 <h2 class="title"><span>圖書管理</span></h2> 15 <form action="<c:url value="/bookstore/deletes" />" method="post"> 16 <table border="1" width="100%" class="tab"> 17 <tr> 18 <th><input type="checkbox" id="chbAll"></th> 19 <th>編號</th> 20 <th>書名</th> 21 <th>價格</th> 22 <th>出版日期</th> 23 <th>操作</th> 24 </tr> 25 <c:forEach var="book" items="${books}"> 26 <tr> 27 <th><input type="checkbox" name="ids" value="${book.id}"></th> 28 <td>${book.id}</td> 29 <td>${book.title}</td> 30 <td>${book.price}</td> 31 <td><fmt:formatDate value="${book.publishDate}" pattern="yyyy年MM月dd日"/></td> 32 <td> 33 <a href="<c:url value="/bookstore/delete" />?id=${book.id}" class="abtn">刪除</a> 34 <a href="<c:url value="/bookstore/update" />?id=${book.id}" class="abtn">編輯</a> 35 </td> 36 </tr> 37 </c:forEach> 38 </table> 39 <p style="color: red">${message}</p> 40 <p> 41 <a href="<c:url value="/bookstore/add" />" class="abtn">添加</a> 42 <input type="submit" value="刪除選擇項" class="btn"/> 43 </p> 44 </form> 45 </div> 46 </body> 47 </html>
接着實現ListBook.jsp內的所有按鈕功能。先說刪除和多項刪除。刪除的話就是直接拿到id調用數據庫進行刪除，多項刪除拿到要被刪除的所有id一個一個的刪除，實現思路都是用springmvc的參數綁定標籤獲取jsp表單中的數據，也就是封裝servlet的request、response。其實也沒有啥思路好說的（2333），修改和添加頁面都是如此，EditBook.jsp、AddBook.jsp。
1 <%@ page language="java" contentType="text/html; charset=UTF-8" 2 pageEncoding="UTF-8"%> 3 <%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%> 4 <%@taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt"%> 5 <!DOCTYPE html> 6 <html> 7 <head> 8 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 9 <link href="styles/main.css" type="text/css" rel="stylesheet" /> 10 <title>編輯圖書</title> 11 </head> 12 <body> 13 <div class="main"> 14 <h2 class="title"><span>編輯圖書</span></h2> 15 <form action="<c:url value="/bookstore/updatePost" />" method="post"> 16 <fieldset> 17 <legend>圖書</legend> 18 <p> 19 <label for="title">圖書名稱：</label> 20 <input type="text" id="title" name="title" value="${book.title}"/> 21 </p> 22 <p> 23 <label for="title">圖書價格：</label> 24 <input type="text" id="price" name="price" value="${book.price}"/> 25 </p> 26 <p> 27 <label for="title">出版日期：</label> 28 <input type="text" id="publishDate" name="publishDate" value="<fmt:formatDate value="${book.publishDate}" pattern="yyyy-MM-dd"/>"/> 29 </p> 30 <p> 31 <input type="hidden" id="id" name="id" value="${book.id}"/> 32 <input type="submit" value="保存" class="btn"> 33 </p> 34 </fieldset> 35 </form> 36 <p style="color: red">${message}</p> 37 <p> 38 <a href="<c:url value="/bookstore/list" />" class="abtn">返回列表</a> 39 </p> 40 </div> 41 </body> 42 </html>
1 <%@ page language="java" contentType="text/html; charset=UTF-8" 2 pageEncoding="UTF-8"%> 3 <%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%> 4 <!DOCTYPE html> 5 <html> 6 <head> 7 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 8 <link href="styles/main.css" type="text/css" rel="stylesheet" /> 9 <title>新增圖書</title> 10 </head> 11 <body> 12 <div class="main"> 13 <h2 class="title"><span>新增圖書</span></h2> 14 <form action="<c:url value="/bookstore/addPost" />" method="post"> 15 <fieldset> 16 <legend>圖書</legend> 17 <p> 18 <label for="title">圖書名稱：</label> 19 <input type="text" id="title" name="title"/> 20 </p> 21 <p> 22 <label for="title">圖書價格：</label> 23 <input type="text" id="price" name="price" /> 24 </p> 25 <p> 26 <label for="title">出版日期：</label> 27 <input type="text" id="publishDate" name="publishDate" /> 28 </p> 29 <p> 30 <input type="submit" value="保存" class="btn"> 31 </p> 32 </fieldset> 33 </form> 34 <p style="color: red">${message}</p> 35 <p> 36 <a href="<c:url value="/bookstore/list" />" class="abtn">返回列表</a> 37 </p> 38 </div> 39 </body> 40 </html>
到這裏所有功能都已經完善，說說其中碰到的問題：
1：頁面404問題
（一）、未加載controller包，無法加載controller，但我在Spring-mybatis裏已經配置過掃描所有包了，目前還沒查具體原因（2333，急着做項目準備找工作，哪位要是知道也可以在底下評論告訴我下）,無奈只能在springmvc文件裏又重新掃描controller包，解決了該問題。
（二）、我一開始在jsp頁面中所有請求都是直接寫路徑，一直都是404就很煩，突然看到瀏覽器地址欄的路徑，在提交之後會直接變成jsp頁面內表單的action路徑，地址欄路徑裏的項目名沒有了，用了jstl裏的<c:url >標籤解決。
2：表單內容無法封裝到springmvc內
springmvc會自動得到表單內容封裝到相對應對象屬性中，發現無法封裝，百度後知道問題是出在數據表的publishDate字段，看別人博客裏說的是在set方法中，傳入字符串再強轉爲日期類型，因爲springmvc只能封裝string類型。
3：亂碼問題
就是在添加和修改頁面所提交的漢字會亂碼，debug發現是springmvc封裝裏的內容亂碼，從springMVC獲取內容再轉碼調用數據庫。
