SSM的整合
1.先创建数据库
数据自行插入
2.导入JAR包
这里是用jar包，也可以用maven导包那样更方便
注意out目录下也到导包
不然整个程序运行不了
3.创建包
4.创建实体类
在pojo包里面创建Books类
package com.atguigu.ssm.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.编写dao层
1.创建接口BookMapper
在dao包里面创建接口BookMapper
public interface BookMapper {
int addBook(Books books);// //增加一个Book
int deleteBookByID(@Param("bookID")int id);根据id删除一个Book
int updateBook(Books books); //更新Book
Books queryBooksByID(@Param("bookID")int id);根据id查询,返回一个Book
List<Books> queryAllBook();// //查询全部Book,返回list集合
}
2.编写对应的mapper文件
在dao包里面创建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.atguigu.ssm.dao.BookMapper">
<insert id="addBook" parameterType="com.atguigu.ssm.pojo.Books">
insert into books(bookName,bookCounts,detail)
values (#{bookName},#{bookCounts},#{detail})
where bookID = #{bookID}
</insert>
<delete id="deleteBookByID" parameterType="com.atguigu.ssm.pojo.Books">
delete from books where bookID=#{bookID}
</delete>
<update id="updateBook" parameterType="com.atguigu.ssm.pojo.Books">
update books set bookName={bookName}, bookCounts=#{bookCounts}, detail=#{detail}
where bookID=#{bookID}
</update>
<select id="queryBooksByID" resultType="com.atguigu.ssm.pojo.Books">
select * from books where BookID =#{BookID}
</select>
<select id="queryAllBook" resultType="com.atguigu.ssm.pojo.Books">
select * from books;
</select>
</mapper>
6.编写service层
1.在service包里面创建BookService接口
public interface BookService {
int addBook(Books books);
int deleteBookByID(int id);
int updateBook(Books books);
Books queryBooksByID(int id);
List<Books> queryAllBook();
}
2.实现接口
在service包里面创建BookServiceImpl类实现接口
public class BookServiceImpl implements BookService {
private BookMapper bookMapper;
public void setBookMapper(BookMapper bookMapper) {
this.bookMapper = bookMapper;
}
@Override
public int addBook(Books books) {
return bookMapper.addBook(books);
}
@Override
public int deleteBookByID(int id) {
return bookMapper.deleteBookByID(id);
}
@Override
public int updateBook(Books books) {
return bookMapper.updateBook(books);
}
@Override
public Books queryBooksByID(int id) {
return bookMapper.queryBooksByID(id);
}
@Override
public List<Books> queryAllBook() {
return bookMapper.queryAllBook();
}
}
7.编写spring层
可以在src目录下创建先创建五个xml文件
7.编写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>
<mappers>
<mapper resource="com/atguigu/ssm/dao/BookMapper.xml"/>
</mappers>
</configuration>
8.spring整合mybatis
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">
<!--这里配置可能和你的不太一样-->
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver"/>
<property name="url" value="jdbc:mysql://localhost:3306/test"/>
<property name="username" value="root"/>
<property name="password" value="a123123"/>
</bean>
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="configLocation" value="classpath:mybatis-config.xml"/>
</bean>
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
<property name="basePackage" value="com.atguigu.ssm.dao"/>
</bean>
</beans>
9.spring整合service层
<?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">
<context:component-scan base-package="com.atguigu.ssm.service"/>
<bean id="BookServiceImpl" class="com.atguigu.ssm.service.BookServiceImpl">
<property name="bookMapper" ref="bookMapper"/>
</bean>
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"/>
</bean>
</beans>
10.编写spring-mvc.xml文件
spring-mvc:
<?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">
<mvc:annotation-driven/> <!-- 1.开启SpringMVC注解驱动 -->
<mvc:default-servlet-handler/> <!-- 2.静态资源默认servlet配置-->
<!-- 3.配置jsp 显示ViewResolver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>
<context:component-scan base-package="com.atguigu.ssm.controller"/>
</beans>
11.Spring配置整合
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="spring-dao.xml"/>
<import resource="spring-service"/>
<import resource="spring-mvc.xml"/>
</beans>
12.编写web.xml
<?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">
<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>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springMvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<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-config>
<session-timeout>15</session-timeout>
</session-config>
</web-app>
14.编写controller与视图层
1.在controller包里面编写Bookcontroller类查询全部书籍：
@Controller
@RequestMapping("/book")
public class BookController {
@Autowired
@Qualifier("BookServiceImpl")
private BookService bookService;
@RequestMapping("/allBook")
public String list(Model model){
List<Books> list = bookService.queryAllBook();
model.addAttribute("list",list);
return "allBook";
}
}
2.在/WEB-INF/jsp/目录下编写allBook.jsp文件
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
</head>
<body>
${list}
</body>
</html>
3.编写index.jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>首页</title>
<style>
a{
text-decoration: none;
color: black;
font-size: 18px;
}
h3{
width: 180px;
height: 38px;
margin: 100px auto;
text-align: center;
line-height: 38px;
background: deepskyblue;
border-radius: 10px;
}
</style>
</head>
<body>
<h3>
<a href="${pageContext.request.contextPath}/book/allBook">进入书籍</a>
</h3>
</body>
</html>
15.运行结果
总结
根据ssm运行流程图可以加深理解