org.apache.commons.lang3.StringUtils.startsWith()方法的使用及代码示例

x33g5p2x  于2022-01-17 转载在 其他  
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本文整理了Java中org.apache.commons.lang3.StringUtils.startsWith()方法的一些代码示例，展示了StringUtils.startsWith()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。StringUtils.startsWith()方法的具体详情如下：
包路径：org.apache.commons.lang3.StringUtils
类名称：StringUtils
方法名：startsWith

StringUtils.startsWith介绍

[英]Check if a CharSequence starts with a specified prefix.

nulls are handled without exceptions. Two nullreferences are considered to be equal. The comparison is case sensitive.

StringUtils.startsWith(null, null)      = true 
StringUtils.startsWith(null, "abc")     = false 
StringUtils.startsWith("abcdef", null)  = false 
StringUtils.startsWith("abcdef", "abc") = true 
StringUtils.startsWith("ABCDEF", "abc") = false

[中]检查字符序列是否以指定的前缀开头。
空值的处理没有异常。两个空引用被认为是相等的。比较是区分大小写的。

StringUtils.startsWith(null, null)      = true 
StringUtils.startsWith(null, "abc")     = false 
StringUtils.startsWith("abcdef", null)  = false 
StringUtils.startsWith("abcdef", "abc") = true 
StringUtils.startsWith("ABCDEF", "abc") = false

代码示例

代码示例来源：origin: alibaba/nacos

@Override
public boolean interests(String key) {
  return StringUtils.startsWith(key, UtilsAndCommons.DOMAINS_DATA_ID_PRE);
}

代码示例来源：origin: Graylog2/graylog2-server

@Override
public Boolean evaluate(FunctionArgs args, EvaluationContext context) {
  final String value = valueParam.required(args, context);
  final String prefix = prefixParam.required(args, context);
  final boolean ignoreCase = ignoreCaseParam.optional(args, context).orElse(false);
  if (ignoreCase) {
    return StringUtils.startsWithIgnoreCase(value, prefix);
  } else {
    return StringUtils.startsWith(value, prefix);
  }
}

代码示例来源：origin: org.apache.commons/commons-lang3

/**
 * <p>Check if a CharSequence starts with a specified prefix.</p>
 *
 * <p>{@code null}s are handled without exceptions. Two {@code null}
 * references are considered to be equal. The comparison is case sensitive.</p>
 *
 * <pre>
 * StringUtils.startsWith(null, null)      = true
 * StringUtils.startsWith(null, "abc")     = false
 * StringUtils.startsWith("abcdef", null)  = false
 * StringUtils.startsWith("abcdef", "abc") = true
 * StringUtils.startsWith("ABCDEF", "abc") = false
 * </pre>
 *
 * @see java.lang.String#startsWith(String)
 * @param str  the CharSequence to check, may be null
 * @param prefix the prefix to find, may be null
 * @return {@code true} if the CharSequence starts with the prefix, case sensitive, or
 *  both {@code null}
 * @since 2.4
 * @since 3.0 Changed signature from startsWith(String, String) to startsWith(CharSequence, CharSequence)
 */
public static boolean startsWith(final CharSequence str, final CharSequence prefix) {
  return startsWith(str, prefix, false);
}

代码示例来源：origin: org.apache.commons/commons-lang3

/**
 * <p>Case insensitive check if a CharSequence starts with a specified prefix.</p>
 *
 * <p>{@code null}s are handled without exceptions. Two {@code null}
 * references are considered to be equal. The comparison is case insensitive.</p>
 *
 * <pre>
 * StringUtils.startsWithIgnoreCase(null, null)      = true
 * StringUtils.startsWithIgnoreCase(null, "abc")     = false
 * StringUtils.startsWithIgnoreCase("abcdef", null)  = false
 * StringUtils.startsWithIgnoreCase("abcdef", "abc") = true
 * StringUtils.startsWithIgnoreCase("ABCDEF", "abc") = true
 * </pre>
 *
 * @see java.lang.String#startsWith(String)
 * @param str  the CharSequence to check, may be null
 * @param prefix the prefix to find, may be null
 * @return {@code true} if the CharSequence starts with the prefix, case insensitive, or
 *  both {@code null}
 * @since 2.4
 * @since 3.0 Changed signature from startsWithIgnoreCase(String, String) to startsWithIgnoreCase(CharSequence, CharSequence)
 */
public static boolean startsWithIgnoreCase(final CharSequence str, final CharSequence prefix) {
  return startsWith(str, prefix, true);
}

代码示例来源：origin: oldmanpushcart/greys-anatomy

/**
 * Greys唯一不能看到的就是自己<br/>
 * 理论上有isSelf()挡住为啥这里还需要再次判断呢?
 * 原因很简单，因为Spy被派遣到对方的ClassLoader中去了
 */
private static boolean isGreysClass(Class<?> clazz) {
  return StringUtils.startsWith(clazz.getCanonicalName(), "com.github.ompc.greys.");
}

代码示例来源：origin: org.apache.commons/commons-lang3

/**
 * Prepends the prefix to the start of the string if the string does not
 * already start with any of the prefixes.
 *
 * @param str The string.
 * @param prefix The prefix to prepend to the start of the string.
 * @param ignoreCase Indicates whether the compare should ignore case.
 * @param prefixes Additional prefixes that are valid (optional).
 *
 * @return A new String if prefix was prepended, the same string otherwise.
 */
private static String prependIfMissing(final String str, final CharSequence prefix, final boolean ignoreCase, final CharSequence... prefixes) {
  if (str == null || isEmpty(prefix) || startsWith(str, prefix, ignoreCase)) {
    return str;
  }
  if (prefixes != null && prefixes.length > 0) {
    for (final CharSequence p : prefixes) {
      if (startsWith(str, p, ignoreCase)) {
        return str;
      }
    }
  }
  return prefix.toString() + str;
}

代码示例来源：origin: alibaba/nacos

public void doRaftAuth(HttpServletRequest req) throws Exception {
  String token = req.getParameter("token");
  if (StringUtils.equals(UtilsAndCommons.SUPER_TOKEN, token)) {
    return;
  }
  String agent = req.getHeader("Client-Version");
  if (StringUtils.startsWith(agent, UtilsAndCommons.NACOS_SERVER_HEADER)) {
    return;
  }
  throw new IllegalAccessException("illegal access,agent= " + agent + ", token=" + token);
}

代码示例来源：origin: org.apache.commons/commons-lang3

if (startsWith(sequence, searchString)) {
  return true;

代码示例来源：origin: gocd/gocd

public boolean passwordEquals(String p1, String p2) {
  if (Objects.equals(p1, p2)) {
    return true;
  }
  try {
    if (StringUtils.startsWith(p1, "AES:") && StringUtils.startsWith(p2, "AES:")) {
      return decrypt(p1).equals(decrypt(p2));
    }
  } catch (Exception e) {
    return false;
  }
  return false;
}

代码示例来源：origin: alibaba/jvm-sandbox

private static String[] replaceWithSysPropUserHome(final String[] pathArray) {
  if (ArrayUtils.isEmpty(pathArray)) {
    return pathArray;
  }
  final String SYS_PROP_USER_HOME = System.getProperty("user.home");
  for (int index = 0; index < pathArray.length; index++) {
    if (StringUtils.startsWith(pathArray[index], "~")) {
      pathArray[index] = StringUtils.replaceOnce(pathArray[index], "~", SYS_PROP_USER_HOME);
    }
  }
  return pathArray;
}

代码示例来源：origin: simpligility/android-maven-plugin

@Override
public void visit( int version, int access, String name, String signature, String superName, String[] interfaces )
{
  for ( String testPackage : parentPackages )
  {
    if ( StringUtils.startsWith( superName, testPackage ) )
    {
      flagAsFound();
      //                System.out.println(name + " extends " + superName);
    }
  }
}

代码示例来源：origin: org.apache.commons/commons-lang3

if (startsWith(str, wrapToken) && endsWith(str, wrapToken)) {
  final int startIndex = str.indexOf(wrapToken);
  final int endIndex = str.lastIndexOf(wrapToken);

代码示例来源：origin: apache/incubator-gobblin

/**
 * Extract all the keys that start with a <code>prefix</code> in {@link Properties} to a new {@link Properties}
 * instance.
 *
 * @param properties the given {@link Properties} instance
 * @param prefix of keys to be extracted
 * @return a {@link Properties} instance
 */
public static Properties extractPropertiesWithPrefix(Properties properties, Optional<String> prefix) {
 Preconditions.checkNotNull(properties);
 Preconditions.checkNotNull(prefix);
 Properties extractedProperties = new Properties();
 for (Map.Entry<Object, Object> entry : properties.entrySet()) {
  if (StringUtils.startsWith(entry.getKey().toString(), prefix.or(StringUtils.EMPTY))) {
   extractedProperties.put(entry.getKey().toString(), entry.getValue());
  }
 }
 return extractedProperties;
}

代码示例来源：origin: scouter-project/scouter

private String toGeneralKey(String key) {
    String prefix = getPrivateKeyPrefix();
    if (!StringUtils.startsWith(key, prefix)) {
      ErrorState.ILLEGAL_KEY_ACCESS.newBizException();
    }

    return StringUtils.substring(key, prefix.length());
  }
}

代码示例来源：origin: jamesdbloom/mockserver

private String getUri(HttpRequest request) {
  String uri = new MockServerHttpRequestToFullHttpRequest().getURI(request);
  if (Strings.isNullOrEmpty(uri)) {
    uri = "/";
  } else if (!StringUtils.startsWith(uri, "/")) {
    uri = "/" + uri;
  }
  return uri;
}

代码示例来源：origin: springside/springside4

/**
 * 兼容无前缀, classpath://, file:// 的情况获取文件
 * 
 * 如果以classpath:// 定义的文件不存在会抛出IllegalArgumentException异常，以file://定义的则不会
 */
public static File asFile(String generalPath) throws IOException {
  if (StringUtils.startsWith(generalPath, CLASSPATH_PREFIX)) {
    String resourceName = StringUtils.substringAfter(generalPath, CLASSPATH_PREFIX);
    return getFileByURL(ResourceUtil.asUrl(resourceName));
  }
  try {
    // try URL
    return getFileByURL(new URL(generalPath));
  } catch (MalformedURLException ex) {
    // no URL -> treat as file path
    return new File(generalPath);
  }
}

代码示例来源：origin: gocd/gocd

protected String destURL(File rootPath, File file, String src, String dest) {
  String trimmedPattern = rtrimStandardrizedWildcardTokens(src);
  if (StringUtils.equals(FilenameUtils.separatorsToUnix(trimmedPattern), FilenameUtils.separatorsToUnix(src))) {
    return dest;
  }
  String trimmedPath = removeStart(subtractPath(rootPath, file), FilenameUtils.separatorsToUnix(trimmedPattern));
  if (!StringUtils.startsWith(trimmedPath, "/") && StringUtils.isNotEmpty(trimmedPath)) {
    trimmedPath = "/" + trimmedPath;
  }
  return dest + trimmedPath;
}

代码示例来源：origin: gocd/gocd

protected String destinationURL(File rootPath, File file, String src, String dest) {
  String trimmedPattern = rtrimStandardrizedWildcardTokens(src);
  if (StringUtils.equals(FilenameUtils.separatorsToUnix(trimmedPattern), FilenameUtils.separatorsToUnix(src))) {
    return dest;
  }
  String trimmedPath = removeStart(subtractPath(rootPath, file), FilenameUtils.separatorsToUnix(trimmedPattern));
  if (!StringUtils.startsWith(trimmedPath, "/") && StringUtils.isNotEmpty(trimmedPath)) {
    trimmedPath = "/" + trimmedPath;
  }
  return dest + trimmedPath;
}

代码示例来源：origin: springside/springside4

/**
 * 兼容file://与classpath://的情况的打开文件成Stream
 */
public static InputStream asStream(String generalPath) throws IOException {
  if (StringUtils.startsWith(generalPath, CLASSPATH_PREFIX)) {
    String resourceName = StringUtils.substringAfter(generalPath, CLASSPATH_PREFIX);
    return ResourceUtil.asStream(resourceName);
  }
  try {
    // try URL
    return FileUtil.asInputStream(getFileByURL(new URL(generalPath)));
  } catch (MalformedURLException ex) {
    // no URL -> treat as file path
    return FileUtil.asInputStream(generalPath);
  }
}

代码示例来源：origin: org.apache.commons/commons-lang3

/**
 * Test StringUtils.startsWith()
 */
@Test
public void testStartsWith() {
  assertTrue("startsWith(null, null)", StringUtils.startsWith(null, null));
  assertFalse("startsWith(FOOBAR, null)", StringUtils.startsWith(FOOBAR, null));
  assertFalse("startsWith(null, FOO)",    StringUtils.startsWith(null, FOO));
  assertTrue("startsWith(FOOBAR, \"\")",  StringUtils.startsWith(FOOBAR, ""));
  assertTrue("startsWith(foobar, foo)",  StringUtils.startsWith(foobar, foo));
  assertTrue("startsWith(FOOBAR, FOO)",  StringUtils.startsWith(FOOBAR, FOO));
  assertFalse("startsWith(foobar, FOO)", StringUtils.startsWith(foobar, FOO));
  assertFalse("startsWith(FOOBAR, foo)", StringUtils.startsWith(FOOBAR, foo));
  assertFalse("startsWith(foo, foobar)", StringUtils.startsWith(foo, foobar));
  assertFalse("startsWith(foo, foobar)", StringUtils.startsWith(bar, foobar));
  assertFalse("startsWith(foobar, bar)", StringUtils.startsWith(foobar, bar));
  assertFalse("startsWith(FOOBAR, BAR)", StringUtils.startsWith(FOOBAR, BAR));
  assertFalse("startsWith(foobar, BAR)", StringUtils.startsWith(foobar, BAR));
  assertFalse("startsWith(FOOBAR, bar)", StringUtils.startsWith(FOOBAR, bar));
}

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