eofexception

问题 I have a problem using an ObjectInputStream and I have been struggling with it for 2 days now. I tried to search for a solution but unfortunately found no fitting answer. I am trying to write a client/server application in which the client sends objects (in this case a configuration class) to the server. The idea is that connection keeps alive after sending the object so it is possible to send a new object if necessary. Here are the important parts of my client code: mSocket = new Socket("192

问题 The following code simply writes data into avro format and reads and displays the same from the avro file written too. I was just trying out the example in the Hadoop definitive guide book. I was able to execute this first time. Then I got the following error. It did work for the first time. So I am not sure wat mistake i am making. This is the exception: Exception in thread "main" java.io.EOFException: No content to map to Object due to end of input at org.codehaus.jackson.map.ObjectMapper.

问题 I'm trying to develop the samples but sometimes when I build and deploy an apps the process fails, and at eclipse Worklight Console appears: 14-feb-2013 16:28:55 com.worklight.report.impl.GadgetReportsServiceImpl loadProperties INFO: FWLSE3005I: Application raw reports are disabled. 14-feb-2013 16:28:55 com.worklight.server.bundle.project.ProjectBundleManager doStart INFO: FWLST0010I: ====== Started server for project module_22_0_CustomLoginModule-project-customization; Worklight version=5.0

问题 I'm trying to load my weka trained model file to generate a prediction. But I get a error of java.io.eofexception when trying to do this. I'm sure this is got to do with my model file being not correctly formed. But I have used weka tool to create the model file and don't understand what's wrong. Code public Classifier loadModel() throws Exception { this.readConfFile(); Classifier classifier; FileInputStream fis = new FileInputStream( prop.getProperty("Output_Model_Dir") + "/best3.model");

问题 While running PubSub Kafka connect using the command: .\bin\windows\connect-standalone.bat .\etc\kafka\WorkerConfig.properties .\etc\kafka\configSink.properties .\etc\kafka\configSource.properties I get this error: Sending metadata request {topics=[test]} to node -1 could not scan file META-INF/MANIFEST.MF in url file:/C:/confluent-3.3.0/bin/../share/java/kafka-serde-tools/commons-compress-1.8.1.jar with scanner SubTypesScanner could not scan file META-INF/MANIFEST.MF in url file:/C:

问题 When trying to connect to http://ws.audioscrobbler.com/2.0/ with post data using HttpURLConnection , I get (randomly) EOFException or FileNotFoundException: http://ws.audioscrobbler.com/2.0/ on my Nexus 4 running Android 4.2.2. Anybody can help? EDIT I upgraded to 4.3: same issue. public InputStream getData(String url_str, List<NameValuePair> postData) { Map<String, Object> response = new HashMap<String, Object>(); InputStream is = null; HttpURLConnection conn = null; try { URL url = new URL

问题 I'm using the following code for post requests public String executeHttpPost(String uri, String data) { HttpURLConnection conn = null; URL url = null; String s = null; try { url = new URL(uri); conn = (HttpURLConnection) url.openConnection(); if (conn instanceof HttpsURLConnection) { Log.d("HTTPS", "HttpsUrl"); } conn.setDoOutput(true); conn.setDoInput(true); conn.setRequestMethod("POST"); conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded"); OutputStreamWriter wr =

问题 I'm trying to write a program where the user can: 1) Add a person to the contact (name, phone, email), 2) Remove a person from the contacts, 3) Read all from contact. The Way I'm doing this is I'm asking for the user for their choice and respectively does whatever. For writing, I simply write an object to the file. For removing, I think I'll be asking the user for "last name" which will be used as the KEY (since I'm using a TreeMap)and will remove the value (object) at the key. So I'm having

问题 when i run spark streaming example org.apache.spark.examples.streaming.JavaDirectKafkaWordCount ,i caught an EOFException follow,how can I resolve it Exception in thread "main" org.apache.spark.SparkException: java.io.EOFException: Received -1 when reading from channel, socket has likely been closed. java.io.EOFException: Received -1 when reading from channel, socket has likely been closed. java.io.EOFException: Received -1 when reading from channel, socket has likely been closed. at org

问题 I want to read multiple objects (my own class Term) that I have output to a .dat file, but I always get a nullPointException or EOFException. ObjectInputStream inputStream = new ObjectInputStream(new FileInputStream(masterFile)); Object o = null; while(( o = inputStream.readObject()) != null){ Term t = (Term)o; System.out.println("I found a term"); } 回答1: See the Javadoc. readObject() doesn't return null at EOF. It throws EOFException. The only way it can return a null is if you wrote a null