简单的SSM框架实例
时间: 2023-07-27 12:09:39 浏览: 55
SSM框架是目前比较流行的Java Web开发框架,包括Spring、Spring MVC和MyBatis三个框架。以下是一个简单的SSM框架实例。
1. 创建一个Maven项目,添加以下依赖:
```xml
<dependencies>
<!--Spring-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>4.3.10.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.3.10.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>4.3.10.RELEASE</version>
</dependency>
<!--Spring MVC-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>4.3.10.RELEASE</version>
</dependency>
<!--MyBatis-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.4</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.2</version>
</dependency>
<!--数据库驱动-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.46</version>
</dependency>
<!--Servlet API-->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
<scope>provided</scope>
</dependency>
<!--JSP API-->
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
<version>2.2</version>
<scope>provided</scope>
</dependency>
</dependencies>
```
2. 在src/main/resources目录下创建Spring配置文件applicationContext.xml,包括以下内容:
```xml
<!--配置数据源-->
<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="123456"/>
</bean>
<!--配置MyBatis-->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="mapperLocations" value="classpath:mapper/*.xml"/>
</bean>
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.example.mapper"/>
</bean>
```
3. 在src/main/resources目录下创建MyBatis的Mapper配置文件userMapper.xml,包括以下内容:
```xml
<mapper namespace="com.example.mapper.UserMapper">
<select id="selectUserById" resultType="com.example.pojo.User">
select * from user where id=#{id}
</select>
</mapper>
```
4. 在src/main/java目录下创建com.example.pojo包,创建User实体类,包括以下内容:
```java
public class User {
private Integer id;
private String name;
private Integer age;
//getter和setter方法
}
```
5. 在src/main/java目录下创建com.example.mapper包,创建UserMapper接口,包括以下内容:
```java
public interface UserMapper {
User selectUserById(Integer id);
}
```
6. 在src/main/java目录下创建com.example.controller包,创建UserController类,包括以下内容:
```java
@Controller
@RequestMapping("/user")
public class UserController {
@Autowired
private UserMapper userMapper;
@RequestMapping(value = "/{id}", method = RequestMethod.GET)
public String getUser(@PathVariable("id") Integer id, Model model) {
User user = userMapper.selectUserById(id);
model.addAttribute("user", user);
return "user";
}
}
```
7. 在src/main/webapp/WEB-INF目录下创建jsp页面user.jsp,包括以下内容:
```html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>User Page</title>
</head>
<body>
<h1>User Information</h1>
<p>ID: ${user.id}</p>
<p>Name: ${user.name}</p>
<p>Age: ${user.age}</p>
</body>
</html>
```
8. 在src/main/webapp/WEB-INF目录下创建Spring MVC的配置文件spring-mvc.xml,包括以下内容:
```xml
<!--配置MVC-->
<mvc:annotation-driven/>
<context:component-scan base-package="com.example.controller"/>
<!--配置视图解析器-->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/views/"/>
<property name="suffix" value=".jsp"/>
</bean>
```
9. 在src/main/webapp/WEB-INF目录下创建web.xml文件,包括以下内容:
```xml
<web-app>
<display-name>Archetype Created Web Application</display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<!--配置DispatcherServlet-->
<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-mvc.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>
</web-app>
```
10. 运行项目,访问http://localhost:8080/user/1,即可看到用户ID为1的信息。