jsp Request获取url信息的各种方法比较 ...

1. 从Request对象中可以获取各种路径信息，以下例子：  
2. 假设请求的页面是index.jsp,项目是WebDemo，则在index.jsp中获取有关request对象的各种路径信息如下  
3. String path = ((HttpServletRequest)request).getContextPath(); 
4. String basePath = request.getScheme()+"://"+request.getServerName()+
5. ":"+request.getServerPort()+path+"/";  
6. String remoteAddress=request.getRemoteAddr();  
7. String servletPath=request.getServletPath();  
8. String realPath=request.getRealPath("/");  
9. String remoteUser=request.getRemoteUser();  
10. String requestURI=request.getRequestURI();  
11. out.println("path:"+path+"<br>");  
12. out.println("basePath:"+basePath+"<br>");  
13. out.println("remoteAddr:"+remoteAddress+"<br>");  
14. out.println("servletPath:"+servletPath+"<br>");  
15. out.println("realPath:"+realPath+"<br>");  
16. out.println("remoteUser:"+remoteUser+"<br>");  
17. out.println("requestURI:"+requestURI+"<br>");  
18. 结果：  
19. path:/WebDemo  
20. basePath:http://localhost:8683/WebDemo/  
21. remoteAddr:127.0.0.1  
22. servletPath:/index.jsp  
23. realPath:D:\apache-tomcat-6.0.13\webapps\WebDemo\  
24. remoteUser:null  
25. requestURI:http://localhost:8683/WebDemo/index.jsp  
26. 从上不难看出request各个对应方法所代表的含义  

转载于:https://www.cnblogs.com/lovejj1994/p/7182194.html