本文整理了Java中org.apache.commons.lang3.StringUtils.removeFirst()方法的一些代码示例，展示了StringUtils.removeFirst()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.removeFirst()方法的具体详情如下：
包路径：org.apache.commons.lang3.StringUtils
类名称：StringUtils
方法名：removeFirst

StringUtils.removeFirst介绍

[英]Removes the first substring of the text string that matches the given regular expression.
This method is a null safe equivalent to:

• text.replaceFirst(regex, StringUtils.EMPTY)
• Pattern.compile(regex).matcher(text).replaceFirst(StringUtils.EMPTY)

A null reference passed to this method is a no-op.

The Pattern#DOTALL option is NOT automatically added. To use the DOTALL option prepend "(?s)" to the regex. DOTALL is also known as single-line mode in Perl.

StringUtils.removeFirst(null, *)      = null 
StringUtils.removeFirst("any", (String) null)  = "any" 
StringUtils.removeFirst("any", "")    = "any" 
StringUtils.removeFirst("any", ".*")  = "" 
StringUtils.removeFirst("any", ".+")  = "" 
StringUtils.removeFirst("abc", ".?")  = "bc" 
StringUtils.removeFirst("A<__>\n<__>B", "<.*>")      = "A\n<__>B" 
StringUtils.removeFirst("A<__>\n<__>B", "(?s)<.*>")  = "AB" 
StringUtils.removeFirst("ABCabc123", "[a-z]")          = "ABCbc123" 
StringUtils.removeFirst("ABCabc123abc", "[a-z]+")      = "ABC123abc"

[中]删除与给定正则表达式匹配的文本字符串的第一个子字符串。
此方法是空安全的等效方法：
*文本。replaceFirst（regex，StringUtils.EMPTY）
*模式。编译（regex）。匹配器（文本）。replaceFirst（StringUtils.EMPTY）
传递给此方法的null引用是no-op。
Pattern#DOTALL选项不会自动添加。使用DOTALL选项将"(?s)"前置到正则表达式。DOTALL在Perl中也称为单线模式。

StringUtils.removeFirst(null, *)      = null 
StringUtils.removeFirst("any", (String) null)  = "any" 
StringUtils.removeFirst("any", "")    = "any" 
StringUtils.removeFirst("any", ".*")  = "" 
StringUtils.removeFirst("any", ".+")  = "" 
StringUtils.removeFirst("abc", ".?")  = "bc" 
StringUtils.removeFirst("A<__>\n<__>B", "<.*>")      = "A\n<__>B" 
StringUtils.removeFirst("A<__>\n<__>B", "(?s)<.*>")  = "AB" 
StringUtils.removeFirst("ABCabc123", "[a-z]")          = "ABCbc123" 
StringUtils.removeFirst("ABCabc123abc", "[a-z]+")      = "ABC123abc"

代码示例

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

@Test
public void testRemoveFirst_StringString() {
  assertNull(StringUtils.removeFirst(null, ""));
  assertEquals("any", StringUtils.removeFirst("any", null));
  assertEquals("any", StringUtils.removeFirst("any", ""));
  assertEquals("", StringUtils.removeFirst("any", ".*"));
  assertEquals("", StringUtils.removeFirst("any", ".+"));
  assertEquals("bc", StringUtils.removeFirst("abc", ".?"));
  assertEquals("A\n<__>B", StringUtils.removeFirst("A<__>\n<__>B", "<.*>"));
  assertEquals("AB", StringUtils.removeFirst("A<__>\n<__>B", "(?s)<.*>"));
  assertEquals("ABCbc123", StringUtils.removeFirst("ABCabc123", "[a-z]"));
  assertEquals("ABC123abc", StringUtils.removeFirst("ABCabc123abc", "[a-z]+"));
  try {
    StringUtils.removeFirst("any", "{badRegexSyntax}");
    fail("StringUtils.removeFirst expecting PatternSyntaxException");
  } catch (final PatternSyntaxException ex) {
    // empty
  }
}

代码示例来源：origin: virjar/vscrawler

@Override
protected String handle(String input, String second) {
  return StringUtils.removeFirst(input, second);
}

代码示例来源：origin: pietermartin/sqlg

private PartitionTree(
    String schemaAndName,
    String schema,
    String name,
    String partitionType,
    String partitionExpression1,
    String partitionExpression2,
    String fromToIn) {
  this.schemaAndName = schemaAndName;
  this.schema = schema;
  this.name = StringUtils.removeEnd(StringUtils.removeFirst(name, "\""), "\"");
  this.partitionExpression1 = partitionExpression1;
  this.partitionExpression2 = partitionExpression2;
  this.fromToIn = fromToIn;
  if (partitionType == null) {
    this.partitionType = PartitionType.NONE;
  } else {
    this.partitionType = PartitionType.fromPostgresPartStrat(partitionType);
  }
}

代码示例来源：origin: org.umlg/sqlg-core

private PartitionTree(
    String schemaAndName,
    String schema,
    String name,
    String partitionType,
    String partitionExpression1,
    String partitionExpression2,
    String fromToIn) {
  this.schemaAndName = schemaAndName;
  this.schema = schema;
  this.name = StringUtils.removeEnd(StringUtils.removeFirst(name, "\""), "\"");
  this.partitionExpression1 = partitionExpression1;
  this.partitionExpression2 = partitionExpression2;
  this.fromToIn = fromToIn;
  if (partitionType == null) {
    this.partitionType = PartitionType.NONE;
  } else {
    this.partitionType = PartitionType.fromPostgresPartStrat(partitionType);
  }
}

代码示例来源：origin: zc-zh-001/ShadowSocks-Share

/**
 * 图片解析
 */
protected ShadowSocksDetailsEntity parseImg(String imgURL) throws IOException, NotFoundException {
  String str = StringUtils.removeFirst(imgURL, "data:image/png;base64,");
  Map<DecodeHintType, Object> hints = new LinkedHashMap<>();
  // 解码设置编码方式为：utf-8，
  hints.put(DecodeHintType.CHARACTER_SET, StandardCharsets.UTF_8.name());
  //优化精度
  hints.put(DecodeHintType.TRY_HARDER, Boolean.TRUE);
  //复杂模式，开启PURE_BARCODE模式
  hints.put(DecodeHintType.PURE_BARCODE, Boolean.TRUE);
  try (ByteArrayInputStream bis = new ByteArrayInputStream(Base64.decodeBase64(str))) {
    BufferedImage image = ImageIO.read(bis);
    Binarizer binarizer = new HybridBinarizer(new BufferedImageLuminanceSource(image));
    BinaryBitmap binaryBitmap = new BinaryBitmap(binarizer);
    Result res = new MultiFormatReader().decode(binaryBitmap, hints);
    return parseLink(res.toString());
  }
}

代码示例来源：origin: com.github.binarywang/weixin-java-pay

String fileNotFoundMsg = "证书文件【" + this.getKeyPath() + "】不存在，请核实！";
if (this.getKeyPath().startsWith(prefix)) {
 String path = StringUtils.removeFirst(this.getKeyPath(), prefix);
 if (!path.startsWith("/")) {
  path = "/" + path;

代码示例来源：origin: binarywang/WxJava

String fileNotFoundMsg = "证书文件【" + this.getKeyPath() + "】不存在，请核实！";
if (this.getKeyPath().startsWith(prefix)) {
 String path = StringUtils.removeFirst(this.getKeyPath(), prefix);
 if (!path.startsWith("/")) {
  path = "/" + path;