How Servlets GET request parameters

1. How to obtain the request parameter value

Gets the Name-value value of the Commit

GetParameter (name)

Gets the name-values value of the Commit

Getparametervalues (name)

2. Getparamter method

Commonly used in parameters passed in, a name corresponding to a value of the form

String Request.getparameter (String paramname)

If the parameter name is incorrectly written, NULL is generated

3. Getparamtervalues method

String[] Request.getparamtervalues (String paramname)

Use this method when you need to get more than one parameter value with the same parameter name

Multiple is used to get the value of the check box in the submitted form.

If the parameter name does not exist, it returns null

How Servlets GET request parameters