将汉字转换\uxxx方式代码,Java代码库,德仔网

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【Java】将汉字转换\uxxx方式

作者:沅泽 / 发布于2015/5/12/ 571


	import java.util.regex.Matcher;
	import java.util.regex.Pattern;
	/**
	* String and Unicode convert each other.
	* @author yzh.lin
	* @since 2012-08-09
	*
	*/
	public class UnicodeConverter {

	 private static final Pattern REG_UNICODE = Pattern.compile("[0-9A-Fa-f]{4}");
	 private static final Pattern EN_CODE = Pattern.compile("[A-Za-z]{4}");

	 public static String unicode2String(String str) {
	 StringBuilder sb = new StringBuilder();
	 int len = str.length();
	 for (int i = 0; i < len; i++) {
	 char c1 = str.charAt(i);
	 if (c1 == '\\' && i < len - 1) {
	 char c2 = str.charAt(++i);
	 if (c2 == 'u' && i <= len - 5) {
	 String tmp = str.substring(i + 1, i + 5);
	 Matcher matcher = REG_UNICODE.matcher(tmp);
	 if (matcher.find()) {
	 sb.append((char) Integer.parseInt(tmp, 16));
	 i = i + 4;
	 } else {
	 sb.append(c1).append(c2);
	 }
	 } else {
	 sb.append(c1).append(c2);
	 }
	 } else {
	 sb.append(c1);
	 }
	 }
	 return sb.toString();
	 }

	 /**
	 * Convert the whole String object.
	 * @param str
	 * @return
	 */
	 public static String string2Unicode(String str)
	 {
	 StringBuilder sb=new StringBuilder();
	 for(int i=0;i<str.length();i++)
	 {
	 String tmpStr = Integer.toHexString(str.charAt(i));
	 if(tmpStr.length() < 4){
	 sb.append("\\u00");
	 }else{
	 sb.append("\\u");
	 }
	 sb.append(tmpStr);
	 }
	 return sb.toString();
	 }
	 /**
	 * Just convert Chinese String
	 * @param str
	 * @return
	 */
	 public static String chinese2Unicode(String str){
	 StringBuilder sb=new StringBuilder();
	 for(int i=0;i<str.length();i++)
	 {
	 String tmpStr = Integer.toHexString(str.charAt(i));

	 if(tmpStr.length() < 4){
	 sb.append(str.charAt(i));
	 }else{
	 sb.append("\\u");
	 sb.append(tmpStr);
	 }
	 }
	 return sb.toString();
	 }

	}

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