Develop Reference

Access a file in network path

I have a wav file in network path i could able to access it from run as \192.106.100.35\Recorded files
from that folder i have to access 536.wav file ,i tried like
code
File file = new File("file://192.106.100.35/Recorded%20files/536.wav");
FileInputStream fis;
byte[] buffer=null;
fis = new FileInputStream(file);
buffer= new byte[fis.available()];
fis.read(buffer);
fis.close();
but gives
java.io.FileNotFoundException: file:\192.106.100.35\Recorded%20files\536.wav (The filename, directory name, or volume label syntax is incorrect)
at java.io.FileInputStream.open(Native Method)
at java.io.FileInputStream.<init>(Unknown Source)
at com.pointel.chart.PlayAudio.doGet(PlayAudio.java:39)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
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:175)
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:844)
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(Unknown Source)
Oct 31, 2013 5:51:02 PM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet PlayAudio threw exception
java.lang.NullPointerException
at org.apache.catalina.connector.CoyoteOutputStream.write(CoyoteOutputStream.java:83)
at com.pointel.chart.PlayAudio.doGet(PlayAudio.java:62)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
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:175)
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:844)
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(Unknown Source)
Any help is appreciated

java.io.File only works with the local harddisk. Use java.net.URL instead for network resources:
new URL("http://192.106.100.35/Recorded%20files/536.wav");
for this to work, you need a server on 192.106.100.35 which supports the HTTP protocol and which exposes the file as /Recorded%20files/536.wav
Other options are NFS or SMB (to mount a remote file system on the local computer; afterwards, you can use File again).

Short version is you can't do that at all.
Javadoc here I'm guessing maybe this is a windows share? But how you get at it depends on the server side. If you can actually mount the remote device e.g.(NFS/Samba/CIFS) then you could salvage this approach. But if it is like an HTTP server you are completely barking up the wrong tree.

Java Web Project not able to execute DLL File from Inside Eclipse

I have a web project which is working fine when I am deploying that project to individual tomcat but when I am trying to run same project from inside Eclipse and in same tomcat instance it is not working throws the following exception:
java.lang.UnsatisfiedLinkError: C:\ms4w\Apache\cgi-bin\mapscript.dll:
The operating system cannot run %1 at
java.lang.ClassLoader$NativeLibrary.load(Native Method) at
java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1807) at
java.lang.ClassLoader.loadLibrary(ClassLoader.java:1732) at
java.lang.Runtime.loadLibrary0(Runtime.java:823) at
java.lang.System.loadLibrary(System.java:1028) at
edu.umn.gis.mapscript.mapscriptJNI.<clinit>(mapscriptJNI.java:26) at
edu.umn.gis.mapscript.mapObj.<init>(mapObj.java:283) at
GISExtension.GISRequest.createMapInfo(GISRequest.java:193) at
GISExtension.GISRequest.doPost(GISRequest.java:166) at
javax.servlet.http.HttpServlet.service(HttpServlet.java:637) at
javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:602)
at
org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Thread.java:662)
The Java code for above exception is:
String library = System.getProperty("mapserver.library.name", "mapscript");
System.loadLibrary(library);
Can anyone help me solve above Exception?

Java Servlet: java.lang.ClassNotFoundException: org.json.simple.parser.ParseException [duplicate]

This question already has an answer here:
Servlet: java.lang.ClassNotFoundException: org.json.simple.parser.ParseException
(1 answer)
Closed 7 years ago.
I am implementing Google Cloud Messaging service for android. I have created a test server which sends push notifications to application users. But the server I have created is generating following error. I am using Java Servlet at server side and have included gcm-server.jar file in project.
I tried with following jar files
1. json-simple-1.1.jar
2. json-simple-1.1.1.jar
Even though getting the same error.
here is the error report
SEVERE: Servlet.service() for servlet HelloWorld threw exception
java.lang.ClassNotFoundException: org.json.simple.parser.ParseException
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1680)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1526)
at com.GCM.servlets.HelloWorld.SendMessage(HelloWorld.java:48)
at com.GCM.servlets.HelloWorld.doPost(HelloWorld.java:41)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
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:127)
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:293)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:602)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Unknown Source)

The json-simple-1.1.jar should appear in the WEB-INF/lib folder of your web application deployed into Tomcat. See http://java.sun.com/j2ee/verified/packaging.html#mechs .

json-simple-1.1.jar was in my classpath twice. Removed one instance and problem fixed.

Problems after Relocated JAVA Libraries to Tomcat Lib folder

I have a problem with my project. I uploaded all my libraries to Tomcat Lib folder, and error occurred.
org.hibernate.HibernateException: Could not parse configuration: /hibernate.cfg.xml
at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1494)
at org.hibernate.cfg.AnnotationConfiguration.doConfigure(AnnotationConfiguration.java:990)
at org.hibernate.cfg.AnnotationConfiguration.doConfigure(AnnotationConfiguration.java:69)
at org.hibernate.cfg.Configuration.configure(Configuration.java:1428)
at org.hibernate.cfg.AnnotationConfiguration.configure(AnnotationConfiguration.java:972)
at org.hibernate.cfg.AnnotationConfiguration.configure(AnnotationConfiguration.java:69)
at org.hibernate.cfg.Configuration.configure(Configuration.java:1414)
at org.hibernate.cfg.AnnotationConfiguration.configure(AnnotationConfiguration.java:966)
at com.billing.util.HibernateUtil.getInitializedConfiguration(HibernateUtil.java:126)
at com.billing.util.HibernateUtil.getSession(HibernateUtil.java:132)
at com.billing.util.HibernateUtil.beginTransaction(HibernateUtil.java:153)
at dscv2.login.userCtrl.UserLogin.processRequest(UserLogin.java:62)
at dscv2.login.loginCtrlServlet.processRequest(loginCtrlServlet.java:48)
at dscv2.login.loginCtrlServlet.doPost(loginCtrlServlet.java:121)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
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:127)
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:298)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:857)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Thread.java:636)
Caused by: org.dom4j.DocumentException: org.dom4j.DocumentFactory cannot be cast to org.dom4j.DocumentFactory Nested exception: org.dom4j.DocumentFactory cannot be cast to org.dom4j.DocumentFactory
at org.dom4j.io.SAXReader.read(SAXReader.java:484)
at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1484)
... 27 more

You shouldn't be putting stuff in the Tomcat /lib directory except, as noted by Mike Baranczak below, JDBC driver JARs. (And even that is true only for Tomcat 6.x and higher. It used to be that those would go in your WEB-INF/lib as well.)
Learn how to create a proper WAR and deploy it to the /webapps directory.

Run time error in java servlet

The build of the project is succesfull, but when I go the the url I get the following error report:
HTTP Status 500 -
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
javax.servlet.ServletException: Error instantiating servlet class example.servlet.ScrapingServlet
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:263)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:584)
org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
java.lang.Thread.run(Thread.java:619)
root cause
java.lang.NoClassDefFoundError: org/apache/http/impl/client/DefaultHttpClient
java.lang.Class.getDeclaredConstructors0(Native Method)
java.lang.Class.privateGetDeclaredConstructors(Class.java:2389)
java.lang.Class.getConstructor0(Class.java:2699)
java.lang.Class.newInstance0(Class.java:326)
java.lang.Class.newInstance(Class.java:308)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:263)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:584)
org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
java.lang.Thread.run(Thread.java:619)
root cause
java.lang.ClassNotFoundException: org.apache.http.impl.client.DefaultHttpClient
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1358)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1204)
java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
java.lang.Class.getDeclaredConstructors0(Native Method)
java.lang.Class.privateGetDeclaredConstructors(Class.java:2389)
java.lang.Class.getConstructor0(Class.java:2699)
java.lang.Class.newInstance0(Class.java:326)
java.lang.Class.newInstance(Class.java:308)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:263)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:584)
org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
java.lang.Thread.run(Thread.java:619)
>note The full stack trace of the root cause is available in the Apache Tomcat/6.0.14 logs.
Apache Tomcat/6.0.14
And that is because I added this simple line to the code:
DefaultHttpClient httpclient = new DefaultHttpClient();
What am I doing wrong?

They key thing to look at in the stack trace is java.lang.ClassNotFoundException: org.apache.http.impl.client.DefaultHttpClient
It's telling you that it can't find org.apache.http.impl.client.DefaultHttpClient in the class path. Resolve that problem and life should get better.

You need to put the HttpClient libraries in /WEB-INF/lib, which is part of the default runtime classpath.