JSP syntax explanation
(1) instruction explanation
Page instruction
<% @ PAGE
[Language = "java"]
[import = "package.class, ..."]
[contenttype = "text / html"; charset = "gb3212"]
[session = "true | false"]
[buffer = "none | 8kb | sizekb"]
[Autoflush = "True | False"]
[Isthreadsafe = "True | false"]
[info = "text"]
[ErrorPage = RelativeURL]
[iSerrorPage = "true | false"]
[extends = "package.class"]
%>
Include instruction
<@ @ include file = "filename"> contains a static file
Include action instruction
(1)
(2)
Forward action instruction
(1)
(2)
Usebean directive
GetProperty instruction
SetProperty instruction
Prop_EXPR has the following possible situations:
Property = "*" | Property = "PropertyName" |
Property = "PropertyName" param = "parametername" |
Property = "PropertyName" value = "PropertyValue"
(2) Interior object explanation
JSP's built-in object has the following: Request, Response, Out, Session, PageContext, Application, Config, Page
The main method of the Request object:
1, getParameter (String name) Return String
2, getParameternames () Return Enumeration
3, getParameterValues (String name) Return String []
The main method of OUT object:
1, Out.Print (String Name)
The main method of session object:
1, GetAttribute (String Name) Return Object2, GetAttributeNames () Return ENUMERATION
3, GetCreationTime () Return Long
4, getid () return string
5, getlastaccessedtime () Return long
6, getMaxinactiveInterval () Return Int
7, Removeattribute (String Name) Void
8, SetAttribute (String Name, Java.lang.Object Value) Void
The main method of Application object:
1, GetAttribute (String Name) Return Object
2, GetAttributeNames () Return Enumeration
3, GetInitParameter (String Name)
4, GetServletInfo ()
5, SetAttribute (String Name, Object Object)
