本文整理了Java中java.io.BufferedReader.readLine()方法的一些代码示例，展示了BufferedReader.readLine()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。BufferedReader.readLine()方法的具体详情如下：
包路径：java.io.BufferedReader
类名称：BufferedReader
方法名：readLine

BufferedReader.readLine介绍

[英]Returns the next line of text available from this reader. A line is represented by zero or more characters followed by '\n', '\r', "\r\n" or the end of the reader. The string does not include the newline sequence.
[中]返回此读取器中可用的下一行文本。行由零个或多个字符表示，后跟“\n”、“\r”、“\r\n”或读取器的结尾。该字符串不包括换行符序列。

代码示例

canonical example by Tabnine

public void postRequest(String urlStr, String jsonBodyStr) throws IOException {
  URL url = new URL(urlStr);
  HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection();
  httpURLConnection.setDoOutput(true);
  httpURLConnection.setRequestMethod("POST");
  httpURLConnection.setRequestProperty("Content-Type", "application/json");
  try (OutputStream outputStream = httpURLConnection.getOutputStream()) { 
   outputStream.write(jsonBodyStr.getBytes());
   outputStream.flush();
  }
  if (httpURLConnection.getResponseCode() == HttpURLConnection.HTTP_OK) {
    try (BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(httpURLConnection.getInputStream()))) {
      String line;
      while ((line = bufferedReader.readLine()) != null) {
        // ... do something with line
      }
    }
  } else {
    // ... do something with unsuccessful response
  }
}

canonical example by Tabnine

public void readAllLines(InputStream in) throws IOException {
 try (BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(in))) {
  String line;
  while ((line = bufferedReader.readLine()) != null) {
   // ... do something with line
  }
 }
}

代码示例来源：origin: stackoverflow.com

try(BufferedReader br = new BufferedReader(new FileReader(file))) {
  for(String line; (line = br.readLine()) != null; ) {
    // process the line.
  }
  // line is not visible here.
}

代码示例来源：origin: stackoverflow.com

String contentType = connection.getHeaderField("Content-Type");
String charset = null;

for (String param : contentType.replace(" ", "").split(";")) {
  if (param.startsWith("charset=")) {
    charset = param.split("=", 2)[1];
    break;
  }
}

if (charset != null) {
  try (BufferedReader reader = new BufferedReader(new InputStreamReader(response, charset))) {
    for (String line; (line = reader.readLine()) != null;) {
      // ... System.out.println(line) ?
    }
  }
} else {
  // It's likely binary content, use InputStream/OutputStream.
}

代码示例来源：origin: stackoverflow.com

BufferedReader br = new BufferedReader(new FileReader("file.txt"));
try {
  StringBuilder sb = new StringBuilder();
  String line = br.readLine();

  while (line != null) {
    sb.append(line);
    sb.append(System.lineSeparator());
    line = br.readLine();
  }
  String everything = sb.toString();
} finally {
  br.close();
}

代码示例来源：origin: eugenp/tutorials

private String bodyToString(InputStream body) throws IOException {
    StringBuilder builder = new StringBuilder();
    BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(body, StandardCharsets.UTF_8));
    String line = bufferedReader.readLine();
    while (line != null) {
      builder.append(line).append(System.lineSeparator());
      line = bufferedReader.readLine();
    }
    bufferedReader.close();
    return builder.toString();
  }
}

代码示例来源：origin: google/guava

private static List<String> readUsingJava(String input, int chunk) throws IOException {
 BufferedReader r = new BufferedReader(getChunkedReader(input, chunk));
 List<String> lines = Lists.newArrayList();
 String line;
 while ((line = r.readLine()) != null) {
  lines.add(line);
 }
 r.close();
 return lines;
}

代码示例来源：origin: commons-io/commons-io

@Test(timeout = 5000)
  public void testReadBytesEOF() throws IOException {
    final BoundedReader mr = new BoundedReader( sr, 3 );
    try ( BufferedReader br = new BufferedReader( mr ) ) {
      br.readLine();
      br.readLine();
    }
  }
}

代码示例来源：origin: google/guava

public void testNewReader() throws IOException {
 File asciiFile = getTestFile("ascii.txt");
 try {
  Files.newReader(asciiFile, null);
  fail("expected exception");
 } catch (NullPointerException expected) {
 }
 try {
  Files.newReader(null, Charsets.UTF_8);
  fail("expected exception");
 } catch (NullPointerException expected) {
 }
 BufferedReader r = Files.newReader(asciiFile, Charsets.US_ASCII);
 try {
  assertEquals(ASCII, r.readLine());
 } finally {
  r.close();
 }
}

代码示例来源：origin: iluwatar/java-design-patterns

/**
 * Loads the data of the file specified.
 */
public String loadData() {
 String dataFileName = this.fileName;
 try (BufferedReader br = new BufferedReader(new FileReader(new File(dataFileName)))) {
  StringBuilder sb = new StringBuilder();
  String line;
  while ((line = br.readLine()) != null) {
   sb.append(line).append('\n');
  }
  this.loaded = true;
  return sb.toString();
 } catch (Exception e) {
  LOGGER.error("File {} does not exist", dataFileName);
 }
 return null;
}

代码示例来源：origin: Netflix/eureka

public String read(InputStream inputStream) throws IOException {
  BufferedReader br = new BufferedReader(new InputStreamReader(inputStream));
  String toReturn;
  try {
    String line = br.readLine();
    toReturn = line;
    while (line != null) {  // need to read all the buffer for a clean connection close
      line = br.readLine();
    }
    return toReturn;
  } finally {
    br.close();
  }
}

代码示例来源：origin: stackoverflow.com

String newLine = System.getProperty("line.separator");
BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
StringBuilder result = new StringBuilder();
String line; boolean flag = false;
while ((line = reader.readLine()) != null) {
  result.append(flag? newLine: "").append(line);
  flag = true;
}
return result.toString();

代码示例来源：origin: stackoverflow.com

try (BufferedReader br = new BufferedReader(new FileReader(file))) {
  String line;
  while ((line = br.readLine()) != null) {
    // process the line.
  }
}

代码示例来源：origin: stackoverflow.com

BufferedReader br = new BufferedReader(new FileReader(path));
try {
  return br.readLine();
} finally {
  br.close();
}

代码示例来源：origin: apache/incubator-dubbo

/**
 * read lines.
 *
 * @param is input stream.
 * @return lines.
 * @throws IOException
 */
public static String[] readLines(InputStream is) throws IOException {
  List<String> lines = new ArrayList<String>();
  BufferedReader reader = new BufferedReader(new InputStreamReader(is));
  try {
    String line;
    while ((line = reader.readLine()) != null) {
      lines.add(line);
    }
    return lines.toArray(new String[0]);
  } finally {
    reader.close();
  }
}

代码示例来源：origin: stackoverflow.com

BufferedReader r = new BufferedReader(new InputStreamReader(inputStream));
StringBuilder total = new StringBuilder();
String line;
while ((line = r.readLine()) != null) {
  total.append(line).append('\n');
}

代码示例来源：origin: stackoverflow.com

try(BufferedReader br = new BufferedReader(new FileReader("file.txt"))) {
  StringBuilder sb = new StringBuilder();
  String line = br.readLine();

  while (line != null) {
    sb.append(line);
    sb.append(System.lineSeparator());
    line = br.readLine();
  }
  String everything = sb.toString();
}

代码示例来源：origin: stackoverflow.com

try (BufferedReader br = new BufferedReader(new FileReader(path))) {
 System.out.println(br.readLine());
} catch (Exception e) {
 ...
} finally {
 ...
}

代码示例来源：origin: apache/incubator-dubbo

/**
 * read lines.
 *
 * @param is input stream.
 * @return lines.
 * @throws IOException
 */
public static String[] readLines(InputStream is) throws IOException {
  List<String> lines = new ArrayList<String>();
  BufferedReader reader = new BufferedReader(new InputStreamReader(is));
  try {
    String line;
    while ((line = reader.readLine()) != null) {
      lines.add(line);
    }
    return lines.toArray(new String[0]);
  } finally {
    reader.close();
  }
}

代码示例来源：origin: jenkinsci/jenkins

/**
 * Read the first line of the given stream, close it, and return that line.
 *
 * @param encoding
 *      If null, use the platform default encoding.
 * @since 1.422
 */
public static String readFirstLine(InputStream is, String encoding) throws IOException {
  try (BufferedReader reader = new BufferedReader(
      encoding == null ? new InputStreamReader(is) : new InputStreamReader(is, encoding))) {
    return reader.readLine();
  }
}