Inputreader Servlet Nullpointerexception

[Chaos-t]

Guten Tag,

Ich habe hier ein dringendes Problem mit einem Servlet, welches ich erstellt habe und zwar bekomme ich eine NullpointerException bei diesem Codeteil

BufferedReader br = new BufferedReader(isr);

Obwohl der Pfad selbst ja existiert(geprüft durch den Windowsexplorer er weigert sich nur meine Textdatei zu öffnen


Hier der vollständige Teilcode:

char[] emailToChar = email.toCharArray();
			for (int i = 0; i < emailToChar.length; i++) {
				if (emailToChar[i] == '@') {
					for (int j = i; j < emailToChar.length; j++) {
						if (emailToChar[j] == '.' || endunggefunden) {
							endunggefunden = true;
							endung = endung + emailToChar[j];
						}
					}
				}
			}
			ServletContext context = getServletContext();
			String path = getServletContext().getRealPath("/WEB-INF/" + "Emailendungen.txt");
			System.out.println(path);
			InputStream inp = (InputStream) context.getResourceAsStream(path);

InputStreamReader isr = new InputStreamReader(inp);
			BufferedReader br = new BufferedReader(isr);
			
			if (br.ready()) {
				while ((temp = br.readLine()) != null) {
					if (temp.equals(endung))
						endungkorrekt = true;
						emailkorrekt = true;
				}
			}
			br.close();
	
			if (!endungkorrekt){
				out.println("Email nicht korrekt");
				//setter = false;
			}

 

[Chaos-t]

[XML]<web-app xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<servlet>
<servlet-name>login</servlet-name>
<servlet-class>login</servlet-class>
</servlet>
<servlet>
<servlet-name>logout</servlet-name>
<servlet-class>logout</servlet-class>
</servlet>
<servlet>
<servlet-name>validator</servlet-name>
<servlet-class>validator</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>login</servlet-name>
<url-pattern>/access/success</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>logout</servlet-name>
<url-pattern>/access/logout</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>validator</servlet-name>
<url-pattern>/valid/success</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>login.html</welcome-file>
<welcome-file>Buchungsformular.html</welcome-file>
</welcome-file-list>
<web-resource-collection>
<web-resource-name>Emailendungen.txt</web-resource-name>
</web-resource-collection>
</web-app>[/XML]

 

[TKausL]

Kannst du die ganze Fehlermeldung mal bitte posten?

 

[Chaos-t]

SEVERE: Servlet.service() for servlet [validator] in context with path [/Aufgabenblatt5] threw exception
java.lang.NullPointerException
	at java.io.Reader.<init>(Unknown Source)
	at java.io.InputStreamReader.<init>(Unknown Source)
	at validator.doPost(validator.java:185)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:641)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:164)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:462)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
	at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:562)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:395)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:250)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:188)
	at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:302)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)

 

[TKausL]

Was genau steht denn in "path"?
In der Doku zu getResourceAsStream steht folgende Regel die beim übergeben von Pfaden eingehalten werden muss:

The path must begin with a / and is interpreted as relative to the current context root, or relative to the /META-INF/resources directory of a JAR file inside the web application's /WEB-INF/lib directory. This method will first search the document root of the web application for the requested resource, before searching any of the JAR files inside /WEB-INF/lib. The order in which the JAR files inside /WEB-INF/lib are searched is undefined.

 

[Chaos-t]

Also in path steht dies hier

C:\Users\...\workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp1\wtpwebapps\Aufgabenblatt5\WEB-INF\Emailendungen.txt

Dieser Pfad existiert aber auch und ich habe glaube ich alle Conditionen eingehalten.

 

[TKausL]

The path must begin with a / and is interpreted as relative to the current context root

Versuch es mal mit einfach nur "/WEB-INF/Emailendungen.txt"