原生API:
Servlet环境中一些有用的对象:
HttpServletRequest
HttpServletResponse
HttpSession
Reader
Writer
InputStream
OutputStream
java.security.Principal
1 配置环境
1.1 添加servlet运行环境:
1.2 引入pom坐标
<dependency> <groupId>javax.servlet</groupId> <artifactId>servlet-api</artifactId> <version>2.5</version> <scope>provided</scope> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>jsp-api</artifactId> <version>2.0</version> <scope>provided</scope> </dependency>
2 使用原生API
直接在controller层的方法的参数列表中添加需要的对象即可
@RequestMapping("/index") public String home(HttpSession session) { System.out.println(session.getId());
return "home"; }