写配置文件
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">
<display-name>ssm_bookstore</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>
<servlet>
<servlet-name>bookstore</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath*:spring_MVC.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>bookstore</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath*:application_Context.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
</web-app>
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-4.3.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.3.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd">
<mvc:annotation-driven />
<context:component-scan base-package="com.bs.admin.controller"/>
<!-- 视图构造器 视图对象 -->
<bean id="jspViewResolver" 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>
<!-- 文件上传会用到 -->
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<property name="maxUploadSize" value="2048000000"/>
<property name="maxInMemorySize" value="409600000"/>
<property name="maxUploadSizePerFile" value="2048000000"/>
<property name="defaultEncoding" value="UTF-8"/>
<property name="resolveLazily" value="true"/>
</bean>
<!-- 注册拦截器 -->
<mvc:interceptors>
<mvc:interceptor>
<mvc:mapping path="/**"/>
<bean class="com.bs.admin.interceptor.BookInterceptor"/>
</mvc:interceptor>
</mvc:interceptors>
application_Context.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-4.3.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.3.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd">
<context:component-scan base-package="com.bs.admin">
<context:exclude-filter type="regex" expression="$[A-Z]\w*Controller^"/>
</context:component-scan>
<!-- 导入spring myBatis整合的配置文件 -->
<import resource="classpath*:spring_mybatis.xml"/>
</beans>
spring_mabatis.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-4.3.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.3.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-4.3.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-4.3.xsd">
<!-- 选择并配置数据源，使用c3p0.ComboPooledDataSource会自动加载classpath下的c3p0.properties -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close" />
<!-- 生成SessionFactory -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<!-- 扫描实体类 -->
<property name="typeAliasesPackage" value="com.bs.admin.pojo" />
<!-- 扫描XxxMapper.xml， mapperLocations：指明Mapper.xml文件路径 -->
<property name="mapperLocations" value="classpath*:com/bs/admin/mapper/xml/*Mapper.xml" />
<!-- configuration：配置 -->
<property name="configuration">
<bean class="org.apache.ibatis.session.Configuration">
<!-- mapUnderscoreToCamelCase：将下划线映射到驼峰大小写 -->
<property name="mapUnderscoreToCamelCase" value="true" />
<!-- cacheEnabled：**缓存 -->
<property name="cacheEnabled" value="true"/>
</bean>
</property>
</bean>
<!-- 注册接口文件 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.bs.admin.mapper" />
</bean>
<!-- 事务控制 -->
<bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource" />
</bean>
<!-- 开启注解式事务 -->
<!-- <tx:annotation-driven/> -->
<tx:advice id="txAdvice" transaction-manager="txManager">
<tx:attributes>
<!-- read-only="true" : 告诉mybatis只需要创建一个只读的Connection -->
<tx:method name="add*" propagation="REQUIRED" rollback-for="java.sql.SQLException" />
<tx:method name="delete*" propagation="REQUIRED" rollback-for="java.sql.SQLException" />
<tx:method name="modify*" propagation="REQUIRED" rollback-for="java.sql.SQLException" />
<tx:method name="get*" read-only="true"/>
</tx:attributes>
</tx:advice>
<!-- 配置aop切口 -->
<aop:config>
<aop:advisor advice-ref="txAdvice" pointcut="execution(public * com.bs.admin.service..*.*(..))" />
</aop:config>
</beans>
创建表
t_book
t_author
t_book_author 创建多对多的关系需要中间表
pojo实体类
书的实体类
package com.bs.admin.pojo;
import java.io.Serializable;
import java.util.HashSet;
import java.util.Set;
/**
*
* <p>Title: Book</p>
* <p>Description: Book实体类</p>
* @author Jack
* <p> @date 2018年11月21日</p>
*/
public class Book implements Serializable {
private static final long serialVersionUID = 597733879789573558L;
private Long primaryId;
private Long bookId;
private String bookName;
private Set<Author> authors = new HashSet<Author>(); // 作者与书，多对多
private String bookCategory; // 书的种类
private Long bookPurchasePrice; // 进价
private Long bookSalesPrice; // 售价
private String bookProfile; // 简介
private String bookCoverImage; // 图片路径
private Long publisherId; // 出版社id
private Long printId; // 印刷id
private Set<Activity> activity = new HashSet<Activity>(); // 活动与书多对多
public Book(){
}
public Book(Long primaryId, Long bookId, String bookName, Set<Author> authors, String bookCategory, Long bookPurchasePrice,Long bookSalesPrice, String bookProfile, String bookCoverImage, Long publisherId, Long printId, Set<Activity> activity) {
this.primaryId = primaryId;
this.bookId = bookId;
this.bookName = bookName;
this.authors = authors;
this.bookCategory = bookCategory;
this.bookPurchasePrice = bookPurchasePrice;
this.bookSalesPrice = bookSalesPrice;
this.bookProfile = bookProfile;
this.bookCoverImage = bookCoverImage;
this.publisherId = publisherId;
this.printId = printId;
this.activity = activity;
}
@Override
public String toString() {
return "Book [主键：" + primaryId + ", 书号：" + bookId + ", 书名：" + bookName +", 作者："+ authors + ", 种类：" + bookCategory + ", 进价：" + bookPurchasePrice + ", 售价：" + bookSalesPrice
+ ", 简介：" + bookProfile + ", 图片路径：" + bookCoverImage + ", 出版者id：" + publisherId + ", 印刷商id：" + printId +", 活动：" + activity + "]";
}
public Long getPrimaryId() {
return primaryId;
}
public void setPrimaryId(Long primaryId) {
this.primaryId = primaryId;
}
public Long getBookId() {
return bookId;
}
public void setBookId(Long bookId) {
this.bookId = bookId;
}
public String getBookName() {
return bookName;
}
public void setBookName(String bookName) {
this.bookName = bookName;
}
public String getBookCategory() {
return bookCategory;
}
public void setBookCategory(String bookCategory) {
this.bookCategory = bookCategory;
}
public Long getBookPurchasePrice() {
return bookPurchasePrice;
}
public void setBookPurchasePrice(Long bookPurchasePrice) {
this.bookPurchasePrice = bookPurchasePrice;
}
public Long getBookSalesPrice() {
return bookSalesPrice;
}
public void setBookSalesPrice(Long bookSalesPrice) {
this.bookSalesPrice = bookSalesPrice;
}
public String getBookProfile() {
return bookProfile;
}
public void setBookProfile(String bookProfile) {
this.bookProfile = bookProfile;
}
public String getBookCoverImage() {
return bookCoverImage;
}
public void setBookCoverImage(String bookCoverImage) {
this.bookCoverImage = bookCoverImage;
}
public Long getPublisherId() {
return publisherId;
}
public void setPublisherId(Long publisherId) {
this.publisherId = publisherId;
}
public Long getPrintId() {
return printId;
}
public void setPrintId(Long printId) {
this.printId = printId;
}
public Set<Activity> getActivity() {
return activity;
}
public void setActivity(Set<Activity> activity) {
this.activity = activity;
}
public Set<Author> getAuthors() {
return authors;
}
public void setAuthors(Set<Author> authors) {
this.authors = authors;
}
}
作者的实体类
package com.bs.admin.pojo;
import java.io.Serializable;
import java.util.HashSet;
import java.util.Set;
/**
*
* <p>Title: Author</p>
* <p>Description: 作者的实体类</p>
* @author jack
* <p> @date 2018年11月21日</p>
*/
public class Author implements Serializable {
private static final long serialVersionUID = -2631951426846305889L;
private Integer authorId;
private String authorName;
private Set<Book> books = new HashSet<Book>();
public Author(){
}
public Author(Integer authorId, String authorName, Set<Book> books) {
this.authorId = authorId;
this.authorName = authorName;
this.books = books;
}
@Override
public String toString() {
return "Author [authorId=" + authorId + ", authorName=" + authorName + ", book：" + books +"]";
}
public Integer getAuthorId() {
return authorId;
}
public void setAuthorId(Integer authorId) {
this.authorId = authorId;
}
public String getAuthorName() {
return authorName;
}
public void setAuthorName(String authorName) {
this.authorName = authorName;
}
public Set<Book> getBooks() {
return books;
}
public void setBooks(Set<Book> books) {
this.books = books;
}
}
Mapper层
BookMapper.xml
<?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.bs.admin.mapper.BookMapper">
<!-- 通过bookId查询书的信息 -->
<select id="getBookByBookId" resultMap="BookResultMap">
select <include refid="bookColumns"/>,<include refid="authorColumns"/>
from t_book b,t_author a,t_book_author ba
where ba.book_id = b.book_id
and ba.author_id = a.author_id
and b.book_id = #{bookId}
</select>
<resultMap type="book" id="BookResultMap" autoMapping="true">
<id property="primaryId" column="primary_id"/>
<!-- 多对多查询 -->
<collection property="authors" ofType="author" autoMapping="true"/>
</resultMap>
<sql id="bookColumns">
primary_id, b.book_id,b.book_name,b.book_category,b.book_purchasePrice,b.book_salesPrice,
b.book_profile,b.book_coverImage,b.publisher_id,b.print_id
</sql>
<sql id="authorColumns">
a.author_id, a.author_name
</sql>
</mapper>
BookMapper接口
package com.bs.admin.mapper;
import com.bs.admin.pojo.Book;
public interface BookMapper {
Book getBookByBookId(Long bookId);
Integer createBook(Book book);
}
dao层
接口
package com.bs.admin.dao;
import org.springframework.stereotype.Repository;
import com.bs.admin.pojo.Book;
@Repository
public interface BookDao {
Book retrieveBookByBookId(Long bookId);
}
实现类
package com.bs.admin.dao.impl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;
import com.bs.admin.dao.BookDao;
import com.bs.admin.mapper.BookMapper;
import com.bs.admin.pojo.Book;
@Repository
public class BookDaoImpl implements BookDao {
@Autowired
private BookMapper bm;
@Override
public Book retrieveBookByBookId(Long bookId) {
Book book = bm.getBookByBookId(bookId);
return book;
}
}
service层
接口
package com.bs.admin.service;
import org.springframework.stereotype.Service;
import com.bs.admin.pojo.Book;
@Service
public interface BookService {
Book getBookByBookId(Long bookId);
}
实现类
package com.bs.admin.service.impl;
import java.util.Set;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.bs.admin.dao.BookDao;
import com.bs.admin.dao.impl.BookDaoImpl;
import com.bs.admin.pojo.Book;
import com.bs.admin.service.BookService;
@Service
public class BookServiceImpl implements BookService{
@Autowired
private BookDao bd;
@Override
public Book getBookByBookId(Long bookId) {
Book book = bd.retrieveBookByBookId(bookId);
return book;
}
}
controller层
BookstoreController
package com.bs.admin.controller;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;
import com.bs.admin.pojo.Author;
import com.bs.admin.pojo.Book;
import com.bs.admin.service.AuthorService;
import com.bs.admin.service.BookService;
@RestController
@RequestMapping("bookstore")
public class BookstoreController {
@Autowired
private BookService bs;
@Autowired
private AuthorService as;
@GetMapping("{bookId}/getBook")
public @ResponseBody Book getBook(@PathVariable("bookId") Long bookId) {
Book book = bs.getBookByBookId(bookId);
System.out.println("book对象: " + book);
return book;
}
}
浏览器
控制台