>From the JavaDocs: public InputStream getResourceAsStream(String name)
Finds a resource with a given name. This method returns null if no resource with this name is found. The rules for searching resources associated with a given class are implemented by the defining class loader of the class. I think the problem occurs whereby your file is not found, check to see if the stream == null first. A solution I have found is NameOfClass.class.getClassLoader().getResourceAsStream(filename); NameOfClass is a class that you are using, it worked for me the last time I used it. Regards, Peter Dolukhanov -----Original Message----- From: A mailing list about Java Server Pages specification and reference [mailto:JSP-INTEREST@;JAVA.SUN.COM] On Behalf Of Edward King Sent: 07 November 2002 06:49 To: [EMAIL PROTECTED] Subject: Java code can't run in JSP I have a question about JSP,I put some Java code into JSP,it like follows: <%@page language="java"%> <%@page import="java.io.*" %> <html> <head> <title>test</title> </head> <body background="images/send.jpg" text="FF0000"> <% String value[]=new String[2]; String str; value[0]="8"; try { InputStream is = this.getClass().getResourceAsStream("version.data"); BufferedReader input = new BufferedReader(new InputStreamReader(is)); str=input.readLine(); } catch(IOException e) { System.out.println("read file error"); } %> .... </body> </html> when I run it,it raise errors: Description: The server encountered an internal error (Internal Server Error) that prevented it from fulfilling this request exception: java.lang.NullPointerException at java.io.Reader.(Reader.java:61) at java.io.InputStreamReader.(InputStreamReader.java:55) at org.apache.jsp.start_0005fsend$jsp._jspService(start_0005fsend$jsp.java: 75) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:107) Then I extract my Java code,and put it into Java file,like follows: import java.io.*; public class test8 { public static void main(String args[]) { test8 ss=new test8(); ss.pp(); } public void pp() { String value[]=new String[2]; String str; value[0]="8"; try { InputStream is = this.getClass().getResourceAsStream("version.data"); BufferedReader input = new BufferedReader(new InputStreamReader(is)); str=input.readLine(); System.out.println(str); } catch(IOException e) { System.out.println("read file error"); } } } It run ok.Why my code can't run in JSP and can run in Java? How to correct to make my Java code run in JSP? Thanks in advance! Edward ======================================================================== === To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff JSP-INTEREST". For digest: mailto [EMAIL PROTECTED] with body: "set JSP-INTEREST DIGEST". Some relevant FAQs on JSP/Servlets can be found at: http://archives.java.sun.com/jsp-interest.html http://java.sun.com/products/jsp/faq.html http://www.esperanto.org.nz/jsp/jspfaq.jsp http://www.jguru.com/faq/index.jsp http://www.jspinsider.com =========================================================================== To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff JSP-INTEREST". For digest: mailto [EMAIL PROTECTED] with body: "set JSP-INTEREST DIGEST". Some relevant FAQs on JSP/Servlets can be found at: http://archives.java.sun.com/jsp-interest.html http://java.sun.com/products/jsp/faq.html http://www.esperanto.org.nz/jsp/jspfaq.jsp http://www.jguru.com/faq/index.jsp http://www.jspinsider.com
