SSM项目整合
SSM整合项目
1、创建数据库ssmbuild，创建表books，插入相关数据！
CREATE DATABASE `ssmbuild`; //创建数据库
USE `ssmbuild`; //使用数据库
DROP TABLE IF EXISTS `books`; //删除空表
//创建books表
CREATE TABLE `ssmbuild`.`books` (
`bookID` int NOT NULL AUTO_INCREMENT COMMENT '书id',
`bookName` varchar(100) NOT NULL COMMENT '书名',
`bookCounts` int NOT NULL COMMENT '数量',
`detail` varchar(200) NOT NULL COMMENT '描述',
PRIMARY KEY (`bookID`)
) ENGINE = InnoDB CHARSET = utf8 ;
//插入数据
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、基本环境搭建
1.创建一个普通的，maven项目！
2.在pom.xml导入相关依赖
<?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.fan</groupId>
<artifactId>ssmbuild</artifactId>
<version>1.0-SNAPSHOT</version>
<!--依赖：junit，数据库驱动，连接池，servlet，jsp，mybatis，mybatis-spring，spring-->
<dependencies>
<!--junit-->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.13.2</version>
</dependency>
<!--数据库驱动-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.28</version>
</dependency>
<!--数据库连接池-->
<dependency>
<groupId>c3p0</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.1.2</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>2.0</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<!--mybatis-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>2.0.7</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.5.9</version>
</dependency>
<!--spring-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>5.3.17</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>5.3.17</version>
</dependency>
<!--lombok-->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.22</version>
</dependency>
</dependencies>
<build>
<resources>
<resource>
<directory>src/main/resources</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
<filtering>true</filtering>
</resource>
<resource>
<directory>src/main/java</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
<filtering>true</filtering>
</resource>
</resources>
</build>
</project>
3.连接数据库
4.在java包中创建com.fan.controler包 com.fan.dao包；com.fan.service包
com.fan.pojo包=========可能还有其他的，fiter包，utils包！
5.在resources中写好maybatis核心配置文件，以及spring核心配置文件,还有连接database.properties!
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>
<!--配置数据源，交给spring-->
<typeAliases>
<package name="com.fan.pojo"/>
</typeAliases>
<mappers>
<mapper class="com.fan.dao.BookMapper"/>
</mappers>
</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">
<import resource="classpath:spring-dao.xml"/>
<import resource="classpath:spring-service.xml"/>
<import resource="classpath:spring-mvc.xml"/>
</beans>
db.properties
jdbc.driver=com.mysql.cj.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/mybatis?useSSL=false&useUnicode=true&characterEncoding=UTF-8&serverTimezone=GMT
jdbc.username=root
jdbc.password=
6.在pojo包中创建实体类，Books.java
package com.fan.pojo;
import java.util.Objects;
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;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
Books books = (Books) o;
return bookID == books.bookID &&
bookCounts == books.bookCounts &&
Objects.equals(bookName, books.bookName) &&
Objects.equals(detail, books.detail);
}
@Override
public int hashCode() {
return Objects.hash(bookID, bookName, bookCounts, 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 + '\'' +
'}';
}
}
7.在dao中写一个BookMapper.java的接口
package com.fan.dao;
import com.fan.pojo.Books;
import java.util.List;
public interface BookMapper {
//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
int queryBookById(int id);
//查询全部的书
List<Books> queryAllBook();
}
8.在dao中写BookMapper.xml文件
<?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.fan.dao.BookMapper">
<!--插入-->
<insert id="addBook" parameterType="Books">
insert into ssmbuild.books(bookName, bookCounts, detail)
VALUES (#{bookName},#{bookCounts},#{detail});
</insert>
<!--删除-->
<delete id="deleteBookById" parameterType="int">
delete from ssmbuild.books where bookID = #{bookId}
</delete>
<!--更新-->
<update id="updateBook" parameterType="Books">
update ssmbuild.books set bookName=#{bookName},bookCounts=#{bookCounts},detail=#{detail}
where bookID=#{bookID}
</update>
<!--根据id查询一本书-->
<select id="queryBookById" resultType="Books">
select * from ssmbuild.books where bookID = #{bookId}
</select>
<!--查询全部的书-->
<select id="queryAllBook" resultType="Books">
select * from ssmbuild.books
</select>
</mapper>
9.在业务层service中创建 BookService.java接口，和其实现类！
BookService.java
package com.fan.service;
import com.fan.pojo.Books;
import java.util.List;
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
int queryBookById(int id);
//查询全部的书
List<Books> queryAllBook();
}
BookServiceImpl.java
package com.fan.service;
import com.fan.dao.BookMapper;
import com.fan.pojo.Books;
import java.util.List;
public class BookServiceImpl implements BookService{
//service层调用dao层：组合Dao
private BookMapper bookMapper;
//Setter方法
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) {
return bookMapper.updateBook(books);
}
public int queryBookById(int id) {
return bookMapper.queryBookById(id);
}
public List<Books> queryAllBook() {
return bookMapper.queryAllBook();
}
}
3、Spring整合Dao层
在resources中创建spring-dao.xml配置文件
<?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">
<!--1.关联数据库配置文件-->
<context:property-placeholder location="classpath:database.properties"/>
<!--2.连接池
dbcp:半自动化
c3p0：自动化操作，自动化的加载配置文件，并且可以自动设置到对象中！
druid： hikari-->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="${jdbc.driver}"/>
<property name="jdbcUrl" value="${jdbc.url}"/>
<property name="user" value="${jdbc.user}"/>
<property name="password" value="${jdbc.password}"/>
<!-- c3p0连接池的私有属性 -->
<property name="maxPoolSize" value="100"/>
<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="5000"/>
<!--定义在从数据库获取新连接失败后重复尝试的次数。Default: 3 -->
<property name="acquireRetryAttempts" value="3" />
</bean>
<!--3.sqlSessionFactory-->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<!--绑定mybatis的配置文件-->
<property name="configLocation" value="classpath:mybatis-config.xml"/>
</bean>
<!--配置dao接口扫描包，动态的实现了dao接口可以注入到spring容器中-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!--注入sqlSessionFactory-->
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
<!--要扫描的dao包-->
<property name="basePackage" value="com.fan.dao"/>
</bean>
</beans>
4、Spring整合Service层
在resources中创建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"
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">
<!--1.扫描service下的包-->
<context:component-scan base-package="com.fan.service"/>
<!--2.将我们的所有业务类，注入到spring，可以通过配置，或者注解实现-->
<bean id="BookServiceImpl" class="com.fan.service.BookServiceImpl">
<property name="bookMapper" ref="bookMapper"/>
</bean>
<!--3.声明式事务配置-->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!--注入数据源-->
<property name="dataSource" ref="dataSource"/>
</bean>
<!--4.AOP事务支持！-->
</beans>
5、SpringMVC
1、添加一个web文件夹，配置web.xml文件
<?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.fan</groupId>
<artifactId>ssmbuild</artifactId>
<version>1.0-SNAPSHOT</version>
<!--依赖：junit，数据库驱动，连接池，servlet，jsp，mybatis，mybatis-spring，spring-->
<dependencies>
<!--junit-->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.13.2</version>
</dependency>
<!--数据库驱动-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.28</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.mchange/c3p0 -->
<dependency>
<groupId>com.mchange</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.5.5</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>2.0</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<?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">
<!--DispatchServlet-->
<servlet>
<servlet-name>springmvc</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>
</servlet>
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!--乱码过滤-->
<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-->
<session-config>
<session-timeout>10</session-timeout>
</session-config>
</web-app>
<!--mybatis-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>2.0.7</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.5.9</version>
</dependency>
<!--spring-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>5.3.17</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>5.3.17</version>
</dependency>
<!--lombok-->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.22</version>
</dependency>
</dependencies>
<build>
<resources>
<resource>
<directory>src/main/resources</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
<filtering>true</filtering>
</resource>
<resource>
<directory>src/main/java</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
<filtering>true</filtering>
</resource>
</resources>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>7</source>
<target>7</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
2、配置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:mvc="http://www.springframework.org/schema/mvc"
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/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/context
https://www.springframework.org/schema/context/spring-context.xsd">
<!--注解驱动-->
<mvc:annotation-driven/>
<!--静态资源过滤-->
<mvc:default-servlet-handler/>
<!-- 扫描包-->
<context:component-scan base-package="com.fan.controller"/>
<!-- 视图解析器-->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsp/"/>
<property name="suffix" value=".jsp"/>
</bean>
</beans>
3、在WEB-INF包下创建一个jsp包，
6、开始controller层和jsp层交互
在controler包中，创建BookController.java,其目的是：controller层调用service层---这里是查询全部书籍
import org.springframework.web.bind.annotation.RequestMapping;
import java.util.List;
@Controller
@RequestMapping("/book")
public class BookController {
//controller 调用service层
//@Autowired 默认是按照类去匹配，配合。 @Qualifier 指定按照名称去装配 bean。
@Autowired
@Qualifier("BookServiceImpl")
private BookService bookService;
//查询全部的书籍，并且返回到一个书籍展示页面！
@RequestMapping("/allBook")
public String list(Model model){
List<Books> list =bookService.queryAllBook();
model.addAttribute("list",list);
return "allBook";
}
}
在WEB-INF中创建jsp包，再建立allBook.jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>书籍展示</title>
</head>
<body>
<h2 >
书籍展示
</h2>
</body>
</html>
7、实现书籍的CRUD
7.1 书籍的显示功能
在jsp包下创建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>书籍展示</title>
<style>
h1{
text-align: center;
}
</style>
<!-- 新 Bootstrap 核心 CSS 文件 -->
<link href="https://cdn.staticfile.org/twitter-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>书籍列表 —————— 显示所有书籍</small>
</h1>
</div>
</div>
<div class="row">
<div class="col-md-4 colum">
<%--此处想要跳转到Addbook页面,交给controller处理，然后跳转--%>
<a class="btn btn-primary" href="${pageContext.request.contextPath}/book/toAddBook">新增书籍</a>
</div>
</div>
</div>
</div>
<div class="row clearfix">
<div class="col-md-12 column">
<table class="table table-hover table-striped">
<thead>
<tr>
<th>书籍编号</th>
<th>书籍名称</th>
<th>书籍数量</th>
<th>书籍详情</th>
<td>操作</td>
</tr>
</thead>
<%--书籍从数据库中查询出来，从这个list中遍历出来--%>
<tbody>
<c:forEach var="book" items="${list}">
<tr>
<td>${book.bookID}</td>
<td>${book.bookName}</td>
<td>${book.bookCounts}</td>
<td>${book.detail}</td>
<td>
<a href="${pageContext.request.contextPath}/book/toUpdate?id=${book.bookID}">修改</a>
||
<a href="${pageContext.request.contextPath}/book/deleteBook/${book.bookID}">删除</a>
</td>
</tr>
</c:forEach>
</tbody>
</table>
</div>
</div>
</body>
</html>
在controller层中的BookController.java写相关操作
package com.fan.controller;
import com.fan.pojo.Books;
import com.fan.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 调用service层
//@Autowired 默认是按照类去匹配，配合。 @Qualifier 指定按照名称去装配 bean。
@Autowired
@Qualifier("BookServiceImpl")
private BookService bookService;
//查询全部的书籍，并且返回到一个书籍展示页面！
@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";//重定向到allBook请求
}
//跳转到修改页面
@RequestMapping("/toUpdate")
public String toUpdatePaper(int id,Model model){
Books books = bookService.queryBookById(id);
model.addAttribute("QBook",books);
return ("updateBook");
}
//修改书籍的请求
@RequestMapping("/updateBook")
public String updateBook(Books books){
System.out.println("updateBook"+books);
bookService.updateBook(books);
return "redirect:/book/allBook";
}
//删除书籍
@RequestMapping("/deleteBook/{bookId}")
public String deleteBook(@PathVariable("bookId") int id){
bookService.deleteBookById(id);
return "redirect:/book/allBook";
}
}
7.2 书籍的添加功能
在前端页面的的书籍下面增加一个添加书籍的按钮
<div class="row">
<div class="col-md-4 colum">
<%--此处想要跳转到Addbook页面,交给controller处理，然后跳转--%>
<a class="btn btn-primary" href="${pageContext.request.contextPath}/book/toAddBook">新增书籍</a>
</div>
</div>
交给Controller层处理，在controller层写相关方法
//跳转到增加书籍页面
@RequestMapping("/toAddBook")
public String toAddPaper(){
return "addBook";
}
//添加书籍的请求
@RequestMapping("/addBook")
public String addBook(Books books){
System.out.println("addBook=>"+books);
bookService.addBook(books);
return "redirect:/book/allBook";//重定向到allBook请求
}
之后再jsp包中创建addBook.jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>添加书籍的页面</title>
<!-- 新 Bootstrap 核心 CSS 文件 -->
<link href="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<div class="container">
<div class="row clearfix">
<div class="col-md-12 column">
<div class="page-header">
<h1>
<small>新增书籍</small>
</h1>
</div>
</div>
</div>
<form action="${pageContext.request.contextPath}/book/addBook" method="post">
<div class="form-group">
<label >书籍名称：</label>
<input type="text" name="bookName" class="form-control" required>
</div>
<div class="form-group">
<label >书籍数量：</label>
<input type="text" name="bookCounts" class="form-control" required>
</div>
<div class="form-group">
<label >书籍描述：</label>
<input type="text" name="detail" class="form-control" required>
</div>
<div class="form-group">
<input type="submit" class="form-control" value="添加" >
</div>
</form>
</div>
</body>
</html>
7.3 书籍的修改和删除功能
在allBook.jsp中的书籍信息后面添加修改和删除按钮
<td>
<a href="${pageContext.request.contextPath}/book/toUpdate?id=${book.bookID}">修改</a>
||
<a href="${pageContext.request.contextPath}/book/deleteBook/${book.bookID}">删除</a>
</td>
在controller层写修改和删除的方法
//跳转到修改页面
@RequestMapping("/toUpdate")
public String toUpdatePaper(int id,Model model){
Books books = bookService.queryBookById(id);
model.addAttribute("QBook",books);
return ("updateBook");
}
//修改书籍的请求
@RequestMapping("/updateBook")
public String updateBook(Books books){
System.out.println("updateBook"+books);
bookService.updateBook(books);
return "redirect:/book/allBook";
}
//删除书籍
@RequestMapping("/deleteBook/{bookId}")
public String deleteBook(@PathVariable("bookId") int id){
bookService.deleteBookById(id);
return "redirect:/book/allBook";
}
在jsp包中写相对应的页面
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>修改书籍页面</title>
<!-- 新 Bootstrap 核心 CSS 文件 -->
<link href="https://cdn.staticfile.org/twitter-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>修改书籍</small>
</h1>
</div>
</div>
</div>
<form action="${pageContext.request.contextPath}/book/updateBook" method="post">
<%--出现的问题：我们提交了修改的sql请求，但是修改失败！初次考虑是事务问题，配置完毕事务，依旧失败！--%>
<%--看一下 SQL语句，能否执行成功：SQL语句执行失败，修改未完成！--%>
<%--前端传递隐藏域--%>
<input type="hidden" name="bookID" value="${QBook.bookID}">
<div class="form-group">
<label>书籍名称：</label>
<input type="text" name="bookName" class="form-control" value="${QBook.bookName}" required>
</div>
<div class="form-group">
<label>书籍数量：</label>
<input type="text" name="bookCounts" class="form-control" value="${QBook.bookCounts}" required>
</div>
<div class="form-group">
<label>书籍名称：</label>
<input type="text" name="detail" class="form-control" value="${QBook.detail}" required>
</div>
<div class="form-group">
<input type="submit" class="form-control" value="修改">
</div>
</form>
</div>
</body>
</html>
7.4 书籍的查询
<%--查询书籍--%>
<form class="form-inline" action="${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>
controller层
//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<>();
list.add(books);
if(books==null){
list = bookService.queryAllBook();
model.addAttribute("error","未查到");
}
model.addAttribute("list",list);
return "allBook";
}
dao层
//查询全部的书,BookMapper.java
List<Books> queryAllBook();
Books queryBookByName(@Param("bookName") String bookName);
<!--查询全部的书,BookMapper.xml SQL查询语句，根据书籍的名称来查询书籍。-->
<select id="queryBookByName" resultType="Books">
select * from ssmbuild.books where bookName = #{bookName}
</select>
service层
//BookService.java
Books queryBookByName(@Param("bookName") String bookName);
public Books queryBookByName(String bookName) {
return bookMapper.queryBookByName(bookName);
}
8、SSM项目整合完毕全部代码
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