GetParameter and getattribute--aloof Wolf blog HttpServletRequest A detailed explanation of the article

Typically use GetParameter for parameters passed on forms and links

Use Request.getattribute ("name") to assign values by Request.setattribute ("name", "Jerry")

This question is the difference between request and session, the request scope is smaller, just a petition, simply say that you are on the page an operation, Request.getparameter () is from the previous page in the URL, form to get parameters, But if a request involves more than one class, the parameters are taken later, Request.setattribute () and Request.getattribute () can be used, but when the result is output, the request ends.

The session can span many pages and can be understood as multiple requests from the client's same IE window. This can be passed between parameters, such as a lot of Web site user login is used.

Can generally use GetParameter to get page parameters ... String...

GetAttribute () can get the object ...


GetParameter can get the parameters such as the page coming in? Id=123 or something like that.

GetAttribute () is commonly used for servlet page pass parameters to JSP

GetParameter and getattribute--aloof Wolf blog HttpServletRequest A detailed explanation of the article