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

String.getBytes介绍

[英]Encodes this String into a sequence of bytes using the platform's default charset, storing the result into a new byte array.

The behavior of this method when this string cannot be encoded in the default charset is unspecified. The java.nio.charset.CharsetEncoder class should be used when more control over the encoding process is required.
[中]使用平台的默认字符集将该字符串编码为字节序列，并将结果存储到新的字节数组中。
当此字符串无法在默认字符集中编码时，此方法的行为未指定。爪哇。尼奥。查塞特。当需要对编码过程进行更多控制时，应使用CharsetEncoder类。

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
  }
}

代码示例来源：origin: google/guava

public void testRfc2202_hmacMd5_case2() {
 byte[] key = "Jefe".getBytes(UTF_8);
 String data = "what do ya want for nothing?";
 checkMd5("750c783e6ab0b503eaa86e310a5db738", key, data);
}

代码示例来源：origin: google/guava

private static Manifest manifest(String content) throws IOException {
 InputStream in = new ByteArrayInputStream(content.getBytes(US_ASCII));
 Manifest manifest = new Manifest();
 manifest.read(in);
 return manifest;
}

代码示例来源：origin: google/guava

public void testRfc2202_hmacSha1_case2() {
 byte[] key = "Jefe".getBytes(UTF_8);
 String data = "what do ya want for nothing?";
 checkSha1("effcdf6ae5eb2fa2d27416d5f184df9c259a7c79", key, data);
}

代码示例来源：origin: google/guava

public void testSomeOtherKnownValues() {
 assertCrc(0x22620404, "The quick brown fox jumps over the lazy dog".getBytes(UTF_8));
 assertCrc(0xE3069283, "123456789".getBytes(UTF_8));
 assertCrc(0xf3dbd4fe, "1234567890".getBytes(UTF_8));
 assertCrc(0xBFE92A83, "23456789".getBytes(UTF_8));
}

代码示例来源：origin: google/guava

@SuppressWarnings("deprecation") // testing a deprecated method
public void testWriteBytes() throws IOException {
 /* Write out various test values in LITTLE ENDIAN FORMAT */
 out.writeBytes("r\u00C9sum\u00C9");
 byte[] data = baos.toByteArray();
 /* Setup input streams */
 DataInput in = new DataInputStream(new ByteArrayInputStream(data));
 /* Read in various values NORMALLY */
 byte[] b = new byte[6];
 in.readFully(b);
 assertEquals("r\u00C9sum\u00C9".getBytes(Charsets.ISO_8859_1), b);
}

代码示例来源：origin: google/guava

public void testNullOutputStream() throws Exception {
 // create a null output stream
 OutputStream nos = ByteStreams.nullOutputStream();
 // write to the output stream
 nos.write('n');
 String test = "Test string for NullOutputStream";
 nos.write(test.getBytes());
 nos.write(test.getBytes(), 2, 10);
 // nothing really to assert?
 assertSame(ByteStreams.nullOutputStream(), ByteStreams.nullOutputStream());
}

代码示例来源：origin: google/guava

public void testKnownInputs() throws Exception {
 String knownOutput = "9753980fe94daa8ecaa82216519393a9";
 String input = "The quick brown fox jumps over the lazy dog";
 Mac mac = Mac.getInstance("HmacMD5");
 mac.init(MD5_KEY);
 mac.update(input.getBytes(UTF_8));
 assertEquals(knownOutput, HashCode.fromBytes(mac.doFinal()).toString());
 assertEquals(knownOutput, HashCode.fromBytes(mac.doFinal(input.getBytes(UTF_8))).toString());
 assertEquals(knownOutput, Hashing.hmacMd5(MD5_KEY).hashString(input, UTF_8).toString());
 assertEquals(knownOutput, Hashing.hmacMd5(MD5_KEY).hashBytes(input.getBytes(UTF_8)).toString());
}

代码示例来源：origin: google/guava

@GwtIncompatible // Reader
private static void testStreamingDecodes(BaseEncoding encoding, String encoded, String decoded)
  throws IOException {
 byte[] bytes = decoded.getBytes(UTF_8);
 InputStream decodingStream = encoding.decodingStream(new StringReader(encoded));
 for (int i = 0; i < bytes.length; i++) {
  assertThat(decodingStream.read()).isEqualTo(bytes[i] & 0xFF);
 }
 assertThat(decodingStream.read()).isEqualTo(-1);
 decodingStream.close();
}

代码示例来源：origin: google/guava

public void testReallySimpleFingerprints() {
 assertEquals(8581389452482819506L, fingerprint("test".getBytes(UTF_8)));
 // 32 characters long
 assertEquals(-4196240717365766262L, fingerprint(Strings.repeat("test", 8).getBytes(UTF_8)));
 // 256 characters long
 assertEquals(3500507768004279527L, fingerprint(Strings.repeat("test", 64).getBytes(UTF_8)));
}

代码示例来源：origin: google/guava

public void testInvalidUnicodeHasherPutString() {
  String str =
    new String(
      new char[] {'a', Character.MIN_HIGH_SURROGATE, Character.MIN_HIGH_SURROGATE, 'z'});
  assertEquals(
    murmur3_32().hashBytes(str.getBytes(Charsets.UTF_8)),
    murmur3_32().newHasher().putString(str, Charsets.UTF_8).hash());
 }
}

代码示例来源：origin: google/guava

@AndroidIncompatible // https://code.google.com/p/android/issues/detail?id=196848
public void testUtf16Expected() {
 byte[] hardcodedExpected = utf16ExpectedWithBom;
 byte[] computedExpected = "r\u00C9sum\u00C9".getBytes(Charsets.UTF_16);
 assertEquals(hardcodedExpected, computedExpected);
}

代码示例来源：origin: google/guava

@SuppressWarnings("deprecation")
public void testSimpleStringUtf8() {
 assertEquals(
   murmur3_32().hashBytes("ABCDefGHI\u0799".getBytes(Charsets.UTF_8)),
   murmur3_32().hashString("ABCDefGHI\u0799", Charsets.UTF_8));
}

代码示例来源：origin: google/guava

public void testHash() throws IOException {
 ByteSource byteSource = new TestByteSource("hamburger\n".getBytes(Charsets.US_ASCII));
 // Pasted this expected string from `echo hamburger | md5sum`
 assertEquals("cfa0c5002275c90508338a5cdb2a9781", byteSource.hash(Hashing.md5()).toString());
}

代码示例来源：origin: google/guava

public void testNewDataInput_readUTF() {
 byte[] data = new byte[17];
 data[1] = 15;
 System.arraycopy("Kilroy was here".getBytes(Charsets.UTF_8), 0, data, 2, 15);
 ByteArrayDataInput in = ByteStreams.newDataInput(data);
 assertEquals("Kilroy was here", in.readUTF());
}

代码示例来源：origin: google/guava

public void testToByteArray() throws IOException {
 File asciiFile = getTestFile("ascii.txt");
 File i18nFile = getTestFile("i18n.txt");
 assertTrue(Arrays.equals(ASCII.getBytes(Charsets.US_ASCII), Files.toByteArray(asciiFile)));
 assertTrue(Arrays.equals(I18N.getBytes(Charsets.UTF_8), Files.toByteArray(i18nFile)));
 assertTrue(Arrays.equals(I18N.getBytes(Charsets.UTF_8), Files.asByteSource(i18nFile).read()));
}

代码示例来源：origin: google/guava

static TestSuite suiteForString(
  ByteSourceFactory factory, String string, String name, String desc) {
 TestSuite suite = suiteForBytes(factory, string.getBytes(Charsets.UTF_8), name, desc, true);
 CharSourceFactory charSourceFactory = SourceSinkFactories.asCharSourceFactory(factory);
 suite.addTest(
   CharSourceTester.suiteForString(
     charSourceFactory, string, name + ".asCharSource[Charset]", desc));
 return suite;
}

代码示例来源：origin: google/guava

public void testNewDataOutput_writeUTF() {
 ByteArrayDataOutput out = ByteStreams.newDataOutput();
 out.writeUTF("r\u00C9sum\u00C9");
 byte[] expected = "r\u00C9sum\u00C9".getBytes(Charsets.UTF_8);
 byte[] actual = out.toByteArray();
 // writeUTF writes the length of the string in 2 bytes
 assertEquals(0, actual[0]);
 assertEquals(expected.length, actual[1]);
 assertEquals(expected, Arrays.copyOfRange(actual, 2, actual.length));
}

代码示例来源：origin: google/guava

public void testNullPointers() {
 NullPointerTester tester =
   new NullPointerTester()
     .setDefault(byte[].class, "secret key".getBytes(UTF_8))
     .setDefault(HashCode.class, HashCode.fromLong(0));
 tester.testAllPublicStaticMethods(Hashing.class);
}

代码示例来源：origin: google/guava

public void testNewDataInput_readChar() {
 byte[] data = "qed".getBytes(Charsets.UTF_16BE);
 ByteArrayDataInput in = ByteStreams.newDataInput(data);
 assertEquals('q', in.readChar());
 assertEquals('e', in.readChar());
 assertEquals('d', in.readChar());
}