ssm整合
1. 创建一个maven工程
- 导入依赖
<!--依赖: junit, 数据库驱动, 连接池, servlet, jsp, jstl, mybatis, mybatis-spring, spring, spring-jdbc-->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.13</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.47</version>
</dependency>
<dependency>
<groupId>com.mchange</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.5.2</version>
</dependency>
<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>2.2.1-b03</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<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>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>5.2.8.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>5.2.8.RELEASE</version>
</dependency>
- 解决导出问题
<!--静态资源导出问题-->
<build>
<resources>
<resource>
<directory>src/main/java</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
<filtering>false</filtering>
</resource>
<resource>
<directory>src/main/resources</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
<filtering>false</filtering>
</resource>
</resources>
</build>
2. 链接数据库
jdbc:mysql://localhost:3306?serverTimezone=GMT%2B8
- 创建表
CREATE DATABASE `ssm`;
USE `ssm`;
/*Table structure for table `books` */
DROP TABLE IF EXISTS `books`;
CREATE TABLE `books` (
`bookId` int(10) NOT NULL AUTO_INCREMENT COMMENT '书id',
`bookName` varchar(100) NOT NULL COMMENT '书名',
`bookCounts` int(11) NOT NULL COMMENT '描述',
KEY `bookId` (`bookId`)
) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=utf8;
/*Data for the table `books` */
insert into `books`(`bookId`,`bookName`,`bookCounts`) values (1,'Java',11),(2,'English',22),(3,'Math',33);
3. mybatis核心配置文件mybatis-config.xml
- 在springDao.xml被引用
<?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去做,变迁需要按顺序排-->
<!--开启日志-->
<settings>
<setting name="logImpl" value="STDOUT_LOGGING"/>
</settings>
<!--取别名,在Mapper中可以直接使用类名,如果没有需要使用全限名-->
<typeAliases>
<package name="com.jing.pojo"/>
</typeAliases>
<mappers>
<!--<mapper resource="com/jing/dao/BookMapper.xml"/>-->
<!--需要类名和xml名字一致,在同目录下-->
<mapper class="com.jing.dao.BookMapper"/>
</mappers>
</configuration>
- 关联数据库db.properties
jdbc.driver=com.mysql.jdbc.Driver
#如果使用的是MySQL8.0+,需要增加时区配置serverTimezone=GMT%2B8;
#useUnicode=true&characterEncoding=UTF-8&解决中文乱码问题
jdbc.url=jdbc:mysql://localhost:3306/mybatis?useSSL=true&useUnicode=true&characterEncoding=UTF-8&serverTimezone=GMT%2B8;
jdbc.username=root
jdbc.password=123456
-
创建实体类和Mapper,以及Mapper.xml,在mybatis-config.xml中配置自动扫描包mappers
-
创建sevice层,BookService和BookServiceImpl,需要注入Dao(springService.xml中注入)
-
Mapper.xml标签以及使用
4. spring核心配置文件applicationContext.xml
在web.xml被引用
<?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:springDao.xml"/>
<import resource="classpath:springService.xml"/>
<import resource="classpath:springMVC.xml"/>
</beans>
5. springDao.xml配置
spring-dao.xml不能被spring识别
<?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
http://www.springframework.org/schema/context/spring-context.xsd">
<!--1.关联数据库配置文件-->
<context:property-placeholder location="classpath:db.properties"/>
<!--2.连接池
dbcp:半自动化操作,不能自动连接
c3p0:自动化操作(自动化加载配置文件,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="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
<!--c3p0连接池的私有属性-->
<property name="maxPoolSize" value="30"/>
<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="10000"/>
<!--当获取连接失败重试次数-->
<property name="acquireRetryAttempts" value="2"/>
</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>
<!--4.配置dao接口扫描包,动态实现Dao接口-->
<!--本来可以通过实现类BookMapperImpl,继承SqlSessionDaoSupport,
注入SqlSessionTemplate,通过getSqlSession()获取-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!--注入 sqlSessionFactory -->
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
<!--配置扫描包-->
<property name="basePackage" value="com.jing.dao"/>
</bean>
</beans>
6. springService.xml配置
<?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
http://www.springframework.org/schema/context/spring-context.xsd">
<!--1.扫描service下的包-->
<context:component-scan base-package="com.jing.service"/>
<!--2.将我们所有的业务类,注入到spring,可以通过配置,或者注解实现-->
<bean id="BookServiceImpl" class="com.jing.service.BookServiceImpl">
<property name="bookMapper" ref="bookMapper"/>
</bean>
<!--3.配置声明式事务-->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!--注入数据源-->
<property name="dataSource" ref="dataSource"/>
</bean>
</beans>
7. springMVC.xml配置
<?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/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd">
<!--1.注解驱动-->
<mvc:annotation-driven/>
<!--2.静态资源过滤-->
<mvc:default-servlet-handler/>
<!--3.扫描包:controller-->
<context:component-scan base-package="com.jing.controller"/>
<!--4,视图解析-->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsp/"/>
<property name="suffix" value=".jsp"/>
</bean>
</beans>
8. web.xml配置
<?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">
<!--DispatcherServlet-->
<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>
<!--乱码过滤器-->
<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>
</web-app>
9. controller和jsp交互
controller查询数据,并发送到视图层
@Autowired
private BookService bookService;
//查询全部书籍
@RequestMapping("/allBook")
public String list(Model model){
List<Books> books = bookService.queryAllBook();
model.addAttribute("list", books);
return "allBook";
}
jsp接收并展示数据(Model中取)
<c:forEach var="book" items="${list}">
<tr>
<td>${book.bookId}</td>
<td>${book.bookName}</td>
<td>${book.bookCounts}</td>
</tr>
</c:forEach>
10. 打包运行
添加war文件
添加lib文件夹以及相应jar包
11. 通过Junit来调试
@Test
public void test(){
ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
BookServiceImpl bookServiceImpl=(BookServiceImpl)context.getBean("BookServiceImpl");
List<Books> books = bookServiceImpl.queryAllBook();
for (Books book : books) {
System.out.println(book);
}
}
数据库乱码解决https://www.freesion.com/article/91021038673/
修改完重启服务