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SSM integration
2022-07-27 19:02:00 【It's too late】
summary ：
When developing enterprise projects , We need to Spring、SpringMVC、MyBatis Framework integration , Jointly complete the development work .
SSM Division of labor ：
- Spring As a basic framework , Integrate other frameworks
- SpringMVC As Web Development framework , Provide server development support
- MyBatis As ORM frame , Provide database development support
Consolidation configuration ：
1, Add dependency
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.16</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.mchange/c3p0 -->
<dependency>
<groupId>com.mchange</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.5.2</version>
</dependency>
<!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.apache.taglibs</groupId>
<artifactId>taglibs-standard-impl</artifactId>
<version>1.2.5</version>
</dependency>
<dependency>
<groupId>org.apache.taglibs</groupId>
<artifactId>taglibs-standard-compat</artifactId>
<version>1.2.5</version>
</dependency>
<dependency>
<groupId>org.apache.taglibs</groupId>
<artifactId>taglibs-standard-jstlel</artifactId>
<version>1.2.5</version>
</dependency>
<dependency>
<groupId>org.apache.taglibs</groupId>
<artifactId>taglibs-standard-spec</artifactId>
<version>1.2.5</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework/spring-context -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>5.2.8.RELEASE</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework/spring-context -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>5.2.8.RELEASE</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework/spring-context -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>5.2.8.RELEASE</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework/spring-context -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>5.2.8.RELEASE</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.mybatis/mybatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.5.5</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>2.0.5</version>
</dependency>
2,SpringMVC Configuration of 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.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc https://www.springframework.org/schema/mvc/spring-mvc.xsd">
<!-- Configure the view processor -->
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/pages/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
<mvc:default-servlet-handler/>
<mvc:annotation-driven/>
</beans>
3,MyBatis Foundation setup 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>
<settings>
<!-- Name the hump -->
<setting name="mapUnderscoreToCamelCase" value="true"/>
<!-- Print query statements -->
<setting name="logImpl" value="STDOUT_LOGGING" />
<!-- Configure lazy loading -->
<setting name="lazyLoadingEnabled" value="true"/>
<!-- Perform all attribute on-demand loading -->
<setting name="aggressiveLazyLoading" value="false"/>
</settings>
</configuration>
4,Spring Integrate Mybatis To configure spring-mybatis.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">
<!-- To configure C3P0 data source -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<!--jdbc Configuration of -->
<property name="driverClass" value="com.mysql.cj.jdbc.Driver"></property>
<property name="jdbcUrl" value="jdbc:mysql://localhost:3306/book_db?useUnicode=true&characterEncoding=UTF-8&serverTimezone=UTC&useSSL=false"></property>
<property name="user" value="root"></property>
<property name="password" value="123456"></property>
<!-- Not necessary -->
<property name="maxPoolSize" value="100"></property>
<property name="minPoolSize" value="10"></property>
<property name="initialPoolSize" value="10"></property>
<property name="maxStatements" value="200"></property>
</bean>
<!-- Configure session factory -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!-- Configure data sources -->
<property name="dataSource" ref="dataSource"></property>
<!-- Package alias -->
<property name="typeAliasesPackage" value="com.blb.bookms.entity"></property>
<!--MyBatis Profile path -->
<property name="configLocation" value="classpath:mybatis-config.xml"/>
<!-- Path to map file -->
<property name="mapperLocations" value="classpath:mappers/*.xml"></property>
</bean>
<!-- Configure the scanner of the mapping interface -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!-- Session factory name -->
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
<!-- The package location of the interface -->
<property name="basePackage" value="com.blb.bookms.dao"></property>
</bean>
</beans>
5,Spring The configuration file , Import SpringMVC and MyBatis To configure
<?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.blb.bookms"></context:component-scan>
<import resource="spring-mvc.xml"></import>
<import resource="spring-mybatis.xml"></import>
</beans>
6,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>Archetype Created Web Application</display-name>
<servlet>
<servlet-name>dispatcherServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring.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>
<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>
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
Test cases
1、 Add book table 
2、 Write entity class
package com.blb.bookms.entity;
/** * Books */
public class Book {
private Integer id;
private String bookName;
private float price;
private Integer typeId;
private String author;
private String publishOrg;
private String publishTime;
private Integer state;
private String bookImage;
}
3、 To write DAO Interface
package com.blb.bookms.dao;
public interface IBookDAO {
List<Book> selectAllBooks();
}
4、 To write Service Interface
package com.blb.bookms.service;
public interface IBookService {
List<Book> findAllBooks();
}
5、 To write Service Implementation class
package com.blb.bookms.service.impl;
@Service
public class BookServiceImpl implements IBookService {
@Autowired
private IBookDAO bookDAO;
@Override
public List<Book> findAllBooks() {
return bookDAO.selectAllBooks();
}
}
6、 Write controller
package com.blb.bookms.controller;
/** * Book controller */
@Controller
@RequestMapping("/book")
public class BookController {
@Autowired
private IBookService bookService;
@GetMapping("/findAllBooks")
public String findAllBooks(Model model){
List<Book> books = bookService.findAllBooks();
model.addAttribute("books",books);
return "book";
}
}
7、 To write webapp/WEB-INF/pages/book.jsp page
<%@ page contentType="text/html;charset=UTF-8" language="java" isELIgnored="false" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<html>
<head>
<title> Book management </title>
<link rel="stylesheet" href="/layui/css/layui.css">
</head>
<body>
<div class="layui-container">
<div class="layui-row">
<div class="layui-col-md9">
<table class="layui-table" lay-size="sm">
<thead>
<tr>
<th> Number </th>
<th> Title </th>
<th> Price </th>
<th> type </th>
<th> author </th>
<th> Press. </th>
<th> Publication date </th>
<th> state </th>
<th> picture </th>
<th> operation </th>
</tr>
</thead>
<tbody>
<c:forEach var="book" items="${books}">
<tr>
<td>${book.id}</td>
<td>${book.bookName}</td>
<td>${book.price}</td>
<td>${book.typeId}</td>
<td>${book.author}</td>
<td>${book.publishOrg}</td>
<td>${book.publishTime}</td>
<td>${book.state}</td>
<td>
<img src="/images/${book.bookImage}">
</td>
</tr>
</c:forEach>
</tbody>
</table>
<div id="page"></div>
</div>
</div>
</div>
</body>
</html>
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