Java 删除换行

Java 删除换行:

/***
	 * Delete all spaces
	 * 
	 * @param input
	 * @return
	 */
	public static String deleteAllCRLF(String input) {
		return input.replaceAll("((\r\n)|\n)[\\s\t ]*", " ").replaceAll(
				"^((\r\n)|\n)", "");
	}

/***
	 * delete CRLF; delete empty line ;delete blank lines
	 * 
	 * @param input
	 * @return
	 */
	private static String deleteCRLFOnce(String input) {
		if (ValueWidget.isHasValue(input)) {
			return input.replaceAll("((\r\n)|\n)[\\s\t ]*(\\1)+", "$1")
					.replaceAll("^((\r\n)|\n)", "");
		} else {
			return null;
		}
	}

	/***
	 * Delete all spaces
	 * 
	 * @param input
	 * @return
	 */
	public static String deleteAllCRLF(String input) {
		return input.replaceAll("((\r\n)|\n)[\\s\t ]*", "").replaceAll(
				"^((\r\n)|\n)", "");
	}

	public static String CRLF2Blank(String input) {
		return input.replaceAll("((\r\n)|\n)[\\s\t ]*", " ").replaceAll(
				"^((\r\n)|\n)", " ").replaceAll("[ ]{2,}", " ");//注意:replace不支持正则表达式
	}
	/**
	 * delete CRLF; delete empty line ;delete blank lines
	 * 
	 * @param input
	 * @return
	 */
	public static String deleteCRLF(String input) {
		input = SystemHWUtil.deleteCRLFOnce(input);
		return SystemHWUtil.deleteCRLFOnce(input);
	}

 SystemHWUtil 见附件中的com.common.util.SystemHWUtil