JSP actions are XML tags that direct the server to use existing components or control the behavior of the JSP engine.There are six JSP Actions:< jsp : include / >< jsp : forward / >< jsp : plugin / >< jsp : usebean / >< jsp : setProperty / >< jsp : getProperty / >
CompilationInitializationExecutionCleanup详细解释Compilation: When a browser asks for a JSP, the JSP engine first checks to see whether it needs to compile the page. If the page has never been compiled, or if the JSP has been modified since it was last compiled, the JSP engine compiles the page.编译的三个步骤:Parsing the JSP.