java.io.PrintWriter类的使用及代码示例

x33g5p2x  于2022-01-17 转载在 其他  
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本文整理了Java中java.io.PrintWriter类的一些代码示例，展示了PrintWriter类的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。PrintWriter类的具体详情如下：
包路径：java.io.PrintWriter
类名称：PrintWriter

PrintWriter介绍

[英]Wraps either an existing OutputStream or an existing Writerand provides convenience methods for printing common data types in a human readable format. No IOException is thrown by this class. Instead, callers should use #checkError() to see if a problem has occurred in this writer.
[中]包装现有OutputStream或现有Writer，并提供以人类可读格式打印常见数据类型的方便方法。此类未引发IOException。相反，调用方应该使用#checkError（）查看此编写器中是否出现问题。

代码示例

canonical example by Tabnine

public void writeToFile(File dest, String content, boolean append) throws IOException {
  // append - true for writing to the end of the file rather to the beginning
  try (PrintWriter writer = new PrintWriter(new FileWriter(dest, append))) {
    writer.print(content);
  }
}

代码示例来源：origin: stanfordnlp/CoreNLP

private Session(Socket socket) throws IOException {
 client = socket;
 in = new BufferedReader(new InputStreamReader(client.getInputStream(), charset));
 out = new PrintWriter(new OutputStreamWriter(client.getOutputStream(), charset));
 start();
}

代码示例来源：origin: jenkinsci/jenkins

/**
 * Reads the entire contents and returns it.
 */
public String read() throws IOException {
  StringWriter out = new StringWriter();
  PrintWriter w = new PrintWriter(out);
  try (BufferedReader in = Files.newBufferedReader(Util.fileToPath(file), StandardCharsets.UTF_8)) {
    String line;
    while ((line = in.readLine()) != null)
      w.println(line);
  } catch (Exception e) {
    throw new IOException("Failed to fully read " + file, e);
  }
  return out.toString();
}

代码示例来源：origin: stackoverflow.com

String line = "שלום, hello, привет";
 OutputStream os = new FileOutputStream("c:/temp/j.csv");
 os.write(239);
 os.write(187);
 os.write(191);
 PrintWriter w = new PrintWriter(new OutputStreamWriter(os, "UTF-8"));
 w.print(line);
 w.flush();
 w.close();

代码示例来源：origin: stackoverflow.com

try{
  PrintWriter writer = new PrintWriter("the-file-name.txt", "UTF-8");
  writer.println("The first line");
  writer.println("The second line");
  writer.close();
} catch (IOException e) {
  // do something
}

代码示例来源：origin: spring-projects/spring-framework

@Override
public void write(char[] buf, int off, int len) {
  super.write(buf, off, len);
  super.flush();
  setCommittedIfBufferSizeExceeded();
}

代码示例来源：origin: stackoverflow.com

try {
  PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter("myfile.txt", true)));
  out.println("the text");
  out.close();
} catch (IOException e) {
  //exception handling left as an exercise for the reader
}

代码示例来源：origin: spotbugs/spotbugs

public static void test(String[] args) throws IOException {
  InputStream is = new FileInputStream("test.txt");
  OutputStream os = new FileOutputStream("/tmp/test.txt");
  try {
    BufferedReader r = new BufferedReader(new InputStreamReader(is, "UTF-8"));
    PrintWriter w = new PrintWriter(new OutputStreamWriter(os, "UTF-8"));
    String line;
    while ((line = r.readLine()) != null) {
      w.println(line);
    }
  } finally {
    is.close();
  }
}

代码示例来源：origin: apache/incubator-pinot

public static void main(String[] args)
  throws Exception {
 if (args.length != 3) {
  LOGGER.error("Incorrect arguments");
  LOGGER.info("Usage: <exec> <UntarredSegmentDir> <QueryFile> <outputFile>");
  System.exit(1);
 }
 String segDir = args[0];
 String queryFile = args[1];
 String outputFile = args[2];
 String query;
 ScanBasedQueryProcessor scanBasedQueryProcessor = new ScanBasedQueryProcessor(segDir);
 BufferedReader bufferedReader = new BufferedReader(new FileReader(queryFile));
 PrintWriter printWriter = new PrintWriter(outputFile);
 while ((query = bufferedReader.readLine()) != null) {
  QueryResponse queryResponse = scanBasedQueryProcessor.processQuery(query);
  printResult(queryResponse);
  printWriter.println("Query: " + query);
  printWriter.println("Result: " + JsonUtils.objectToString(queryResponse));
 }
 bufferedReader.close();
 printWriter.close();
}

代码示例来源：origin: stanfordnlp/CoreNLP

BufferedReader stdIn = new BufferedReader(
    new InputStreamReader(System.in, charset));
log.info("Input some text and press RETURN to POS tag it, or just RETURN to finish.");
for (String userInput; (userInput = stdIn.readLine()) != null && ! userInput.matches("\\n?"); ) {
 try {
  Socket socket = new Socket(host, port);
  PrintWriter out = new PrintWriter(new OutputStreamWriter(socket.getOutputStream(), charset), true);
  BufferedReader in = new BufferedReader(new InputStreamReader(
      socket.getInputStream(), charset));
  PrintWriter stdOut = new PrintWriter(new OutputStreamWriter(System.out, charset), true);
  out.println(userInput);
  stdOut.println(in.readLine());
  while (in.ready()) {
   stdOut.println(in.readLine());
  in.close();

代码示例来源：origin: DeemOpen/zkui

public String executeCmd(String cmd, String zkServer, String zkPort) throws IOException {
    StringBuilder sb;
    try (Socket s = new Socket(zkServer, Integer.parseInt(zkPort)); PrintWriter out = new PrintWriter(s.getOutputStream(), true); BufferedReader reader = new BufferedReader(new InputStreamReader(s.getInputStream()))) {
      out.println(cmd);
      String line = reader.readLine();
      sb = new StringBuilder();
      while (line != null) {
        sb.append(line);
        sb.append("<br/>");
        line = reader.readLine();
      }
    }
    return sb.toString();
  }
}

代码示例来源：origin: stanfordnlp/CoreNLP

String currentInfile = "";
try {
 outfile = new PrintWriter(new BufferedWriter(new OutputStreamWriter(new FileOutputStream(outFileName),"UTF-8")));
  infile = new LineNumberReader(new BufferedReader(new InputStreamReader(new FileInputStream(path),"UTF-8")));
  currentInfile = path.getPath();
   outfile.println(SentenceUtils.listToString(sent));
} finally {
 if(outfile != null)
  outfile.close();

代码示例来源：origin: spotbugs/spotbugs

@Override
@ExpectWarning("PT_RELATIVE_PATH_TRAVERSAL")
public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
  response.setContentType("text/plain");
  PrintWriter out = response.getWriter();
  String path = request.getParameter("path");
  BufferedReader r = new BufferedReader(new FileReader("data/" + path));
  while (true) {
    String txt = r.readLine();
    if (txt == null)
      break;
    out.println(txt);
  }
  out.close();
  r.close();
}

代码示例来源：origin: jmxtrans/jmxtrans

private void processRequests(ServerSocket server) throws IOException {
  Socket socket = server.accept();
  connectionsAccepted.incrementAndGet();
  try (
      BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream(), UTF_8));
      PrintWriter out = new PrintWriter(new OutputStreamWriter(socket.getOutputStream(), UTF_8))
  ){
    synchronized (startSynchro) {
      startSynchro.notifyAll();
    }
    String line;
    while ((line = in.readLine()) != null) {
      receivedMessages.add(line);
      out.print(line);
    }
  }
}

代码示例来源：origin: stanfordnlp/CoreNLP

private static void resolveDummyTags(File treeFile,
  TwoDimensionalCounter<String, String> pretermLabel,
  TwoDimensionalCounter<String, String> unigramTagger) {
 try {
  BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(treeFile), "UTF-8"));
  TreeReaderFactory trf = new FrenchTreeReaderFactory();
  TreeReader tr = trf.newTreeReader(br);
  PrintWriter pw = new PrintWriter(new PrintStream(new FileOutputStream(new File(treeFile + ".fixed")),false,"UTF-8"));
  int nTrees = 0;
  for(Tree t; (t = tr.readTree()) != null;nTrees++) {
   traverseAndFix(t, pretermLabel, unigramTagger);
   pw.println(t.toString());
  }
  pw.close();
  tr.close();
  System.out.println("Processed " +nTrees+ " trees");
 } catch (UnsupportedEncodingException e) {
  e.printStackTrace();
 } catch (FileNotFoundException e) {
  e.printStackTrace();
 } catch (IOException e) {
  e.printStackTrace();
 }
}

代码示例来源：origin: stanfordnlp/CoreNLP

public static PrintWriter getPrintWriter(File textFile, String encoding) throws IOException {
 File f = textFile.getAbsoluteFile();
 if (encoding == null) {
  encoding = defaultEncoding;
 }
 return new PrintWriter(new BufferedWriter(new OutputStreamWriter(new FileOutputStream(f), encoding)), true);
}

代码示例来源：origin: stanfordnlp/CoreNLP

public static void main(String[] args) throws Exception {
 if (args.length != 2) {
  log.info("usage: java TaggerDemo2 modelFile fileToTag");
  return;
 }
 MaxentTagger tagger = new MaxentTagger(args[0]);
 TokenizerFactory<CoreLabel> ptbTokenizerFactory = PTBTokenizer.factory(new CoreLabelTokenFactory(),
                   "untokenizable=noneKeep");
 BufferedReader r = new BufferedReader(new InputStreamReader(new FileInputStream(args[1]), "utf-8"));
 PrintWriter pw = new PrintWriter(new OutputStreamWriter(System.out, "utf-8"));
 DocumentPreprocessor documentPreprocessor = new DocumentPreprocessor(r);
 documentPreprocessor.setTokenizerFactory(ptbTokenizerFactory);
 for (List<HasWord> sentence : documentPreprocessor) {
  List<TaggedWord> tSentence = tagger.tagSentence(sentence);
  pw.println(SentenceUtils.listToString(tSentence, false));
 }
 // print the adjectives in one more sentence. This shows how to get at words and tags in a tagged sentence.
 List<HasWord> sent = SentenceUtils.toWordList("The", "slimy", "slug", "crawled", "over", "the", "long", ",", "green", "grass", ".");
 List<TaggedWord> taggedSent = tagger.tagSentence(sent);
 for (TaggedWord tw : taggedSent) {
  if (tw.tag().startsWith("JJ")) {
   pw.println(tw.word());
  }
 }
 pw.close();
}

代码示例来源：origin: stackoverflow.com

StringWriter sw = new StringWriter();
PrintWriter pw = new PrintWriter(sw);
e.printStackTrace(pw);
sw.toString(); // stack trace as a string

代码示例来源：origin: apache/incubator-dubbo

public static String toString(Throwable e) {
  StringWriter w = new StringWriter();
  PrintWriter p = new PrintWriter(w);
  p.print(e.getClass().getName() + ": ");
  if (e.getMessage() != null) {
    p.print(e.getMessage() + "\n");
  }
  p.println();
  try {
    e.printStackTrace(p);
    return w.toString();
  } finally {
    p.close();
  }
}

代码示例来源：origin: apache/ignite

File dstFile = new File(testWorkDir, "mapred-site.xml");
try (BufferedReader in = new BufferedReader(new FileReader(srcFile));
   PrintWriter out = new PrintWriter(dstFile)) {
  String line;
  while ((line = in.readLine()) != null) {
    if (line.startsWith("</configuration>"))
      out.println(
        "    <property>\n" +
        "        <name>" + HadoopCommonUtils.JOB_COUNTER_WRITER_PROPERTY + "</name>\n" +
        "    </property>\n");
    out.println(line);
  out.flush();

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