http://www.guj.com.br/posts/list/6.java JForum - http://www.jforum.net Porque sempre dá NullPointerException???
[quote]
INFO: BTTNLOGI: reading resource: /WEB-INF/BTTNLOGI.HTM
06/02/2010 17:49:10 org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet BTTNLOGI threw exception
[b]java.lang.NullPointerException[/b]
at com.consist.bttweb.controller.BTTNLOGI.processRequest(BTTNLOGI.java:44)
at com.consist.bttweb.controller.BTTNLOGI.doGet(BTTNLOGI.java:111)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Thread.java:619)

[/quote]

Veja os testes que já fiz:
[code]
...
try {
String fileName="/WEB-INF/BTTNLOGI.HTM";
log("reading resource: "+ fileName);

//URI uri = getClass().getResource(fileName).toURI();
//FileInputStream fis = new FileInputStream(new File(uri));
//BufferedReader br = new BufferedReader(new InputStreamReader(fis));

// InputStream is = getClass().getClassLoader().getResourceAsStream(fileName);
// BufferedReader br = new BufferedReader(new InputStreamReader(is));

//URL url = getServletContext().getResource(fileName);
//BufferedReader br = new BufferedReader(new InputStreamReader(url.openStream()));

//InputStream is = getServletContext().getResourceAsStream(fileName);
//BufferedReader br = new BufferedReader(new InputStreamReader(is));

//FileInputStream fis = new FileInputStream(Thread.currentThread().getContextClassLoader().getResource(fileName).getPath());
//BufferedReader br = new BufferedReader(new InputStreamReader(fis));

FileInputStream fis = new FileInputStream(getServletContext().getResource(fileName).getFile());
BufferedReader br = new BufferedReader(new InputStreamReader(fis));

String s;
while ((s = br.readLine()) != null) {
out.println(s);
}
br.close();
...
[/code]]]> http://www.guj.com.br/prepost/197696/992234/servlet-acessando-recursos-em-web-inf http://www.guj.com.br/prepost/197696/992234/servlet-acessando-recursos-em-web-inf GMT
]]> http://www.guj.com.br/prepost/197696/992292/reservlet-acessando-recursos-em-web-inf http://www.guj.com.br/prepost/197696/992292/reservlet-acessando-recursos-em-web-inf GMT
[/quote]
Obrigado. Graças a sua resposta identifiquei o problema
Coloquei a linha com log.... e deu nullPointer novamente... aí coloquei um getRealPath para ver para onde estava apontando e .... descobri que o [b]nome do arquivo estava errado[/b] :oops:
[code]
log("getFile:" + getServletContext().getResource(fileName).getFile());
log("getRealPath:" + getServletContext().getRealPath(fileName));
[/code]
Acertei o nome no programa e testei novamente.

Das alternativas utilizadas estas duas funcionaram... Qual é recomendada? Tem diferença entre elas?
[code]
// Funciona
//URL url = getServletContext().getResource(fileName);
//BufferedReader br = new BufferedReader(new InputStreamReader(url.openStream()));

// Funciona
InputStream is = getServletContext().getResourceAsStream(fileName);
BufferedReader br = new BufferedReader(new InputStreamReader(is));

[/code]

]]> http://www.guj.com.br/prepost/197696/992509/reservlet-acessando-recursos-em-web-inf http://www.guj.com.br/prepost/197696/992509/reservlet-acessando-recursos-em-web-inf GMT A página html consegue fazer referência a recursos que estão no WEB-INF???
Exemplo:
[code]
<style>
#bgHeader {width: 100%; height: 44px;position: absolute; left: 0px; top: 0px;background-image: url(/WEB-INF/imagem/bgHeader.gif);}
#bgFoot {width: 100%; height: 35px;padding: 5px 5px 5px 5px;background-image: url(/WEB-INF/BTT/v250/imagem/bgFoot.gif);background-repeat: repeat-x;}
#pagina { font-family: Arial, Helvetica, sans-serif; text-decoration: none; font-style: normal; font-weight: normal; margin: 0px auto 0px 0px; width: 100%; /*height: 120px;*/ position: absolute; left: 0px; top: 44px; background: url(/WEB-INF/imagem/fundo.gif) repeat-x;}
</style>
<link href="/WEB-INF/css/style.css" rel="stylesheet" />
<link rel="shortcut icon" href="/WEB-INF/imagem/favicon.ico" type="image/x-icon" />
....
<div align="right"><img src="/WEB-INF/imagem/logo_tag.jpg" alt="Logo" /></div>
<div id="bgFoot"> <table> <tr> <td><img src="/WEB-INF/imagem/logo_25.jpg" alt="Logo" /></td> <td><h5>Companyt ©</h5></td> </tr> </table> </div>
</div></body></html>

[/code]]]> http://www.guj.com.br/prepost/197696/992827/reservlet-acessando-recursos-em-web-inf http://www.guj.com.br/prepost/197696/992827/reservlet-acessando-recursos-em-web-inf GMT