What is the difference betweem getRequestDispatcher() available as part of ServletContext and Servle - You can get a RequestDispatcher object from either a request or the web context; however, the two methods have slightly different behavior. The method takes the path to the requested resource as an argument. A request can take a relative path (that is, one that does not begin with a /), but the web context requires an absolute path. If the resource is not available or if the server has not implemented a RequestDispatcher object for that type of resource, getRequestDispatcher will return null. Your servlet should be prepared to deal with this condition

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Question: What is the difference betweem getRequestDispatcher() available as part of ServletContext and ServletRequest

Answer: You can get a RequestDispatcher object from either a request or the web context; however, the two methods have slightly different behavior. The method takes the path to the requested resource as an argument. A request can take a relative path (that is, one that does not begin with a /), but the web context requires an absolute path. If the resource is not available or if the server has not implemented a RequestDispatcher object for that type of resource, getRequestDispatcher will return null. Your servlet should be prepared to deal with this condition

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Question: What is the difference betweem getRequestDispatcher() available as part of ServletContext and ServletRequest

Answer:

You can get a RequestDispatcher object from either a request or the web context; however, the two methods have slightly different behavior. The method takes the path to the requested resource as an argument. A request can take a relative path (that is, one that does not begin with a /), but the web context requires an absolute path. If the resource is not available or if the server has not implemented a RequestDispatcher object for that type of resource, getRequestDispatcher will return null. Your servlet should be prepared to deal with this condition
Source: CoolInterview.com

servlet context need to give absolute path, where as request relative path is enough....
more over request is fulfil wen the service() methods comes to that line, but context fulfil wen server start execution Source: CoolInterview.com

Answered by: Gopi | Date: 4/17/2009 |

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