Hello world in jsp
Create a file named hello-world.jsp.
<html>
<head>
<title> My first JSP page </title>
</head>
<body>
<%
String displayText ="Hello World!";
%><%=displayText%>, todays date is <%=new java.util.Date()%><%
%>
</body>
</html>
When you run this code it will look something like this:
"Hello World!, todays date is Wed Nov 08 16:13:28 CET 2006"
The server automatically makes an servlet out of your jsp file.
The servlet is the actual code executed when you run the jsp file.
import javax.servlet.*;
import javax.servlet.http.*;
import javax.servlet.jsp.*;
public final class hello_002dworld_jsp extends org.apache.jasper.runtime.HttpJspBase
implements org.apache.jasper.runtime.JspSourceDependent {
private static java.util.Vector _jspx_dependants;
public java.util.List getDependants() {
return _jspx_dependants;
}
public void _jspService(HttpServletRequest request, HttpServletResponse response)
throws java.io.IOException, ServletException {
JspFactory _jspxFactory = null;
PageContext pageContext = null;
HttpSession session = null;
ServletContext application = null;
ServletConfig config = null;
JspWriter out = null;
Object page = this;
JspWriter _jspx_out = null;
PageContext _jspx_page_context = null;
try {
_jspxFactory = JspFactory.getDefaultFactory();
response.setContentType("text/html");
pageContext = _jspxFactory.getPageContext(this, request, response,
null, true, 8192, true);
_jspx_page_context = pageContext;
application = pageContext.getServletContext();
config = pageContext.getServletConfig();
session = pageContext.getSession();
out = pageContext.getOut();
_jspx_out = out;
out.write("<html>\r\n");
out.write("<head>\r\n");
out.write("<title> My first JSP page </title>\r\n");
out.write("</head>\r\n");
out.write("<body>\r\n");
String displayText ="Hello World!";
out.print(displayText);
out.write(", todays date is ");
out.print(new java.util.Date());
out.write("\r\n");
out.write("</body>\r\n");
out.write("</html>\r\n");
} catch (Throwable t) {
if (!(t instanceof SkipPageException)){
out = _jspx_out;
if (out != null && out.getBufferSize() != 0)
out.clearBuffer();
if (_jspx_page_context != null) _jspx_page_context.handlePageException(t);
}
} finally {
if (_jspxFactory != null) _jspxFactory.releasePageContext(_jspx_page_context);
}
}
}