字符串处理(全角转半角，半角转换全角)代码,Java代码库,德仔网

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【Java】字符串处理(全角转半角，半角转换全角)

作者:dezaicn / 发布于2015/9/22/ 801


	/**
	 * 特殊字符串转换
	 * @Class Name FullCharConverter
	 * @Author xiaowei
	 * @Create In 2012-8-24
	 */
	public class FullCharConverter {
	
	/**
	* 全角转半角的 转换函数
	* @Methods Name full2HalfChange
	* @Create In 2012-8-24 By xiaowei
	* @param QJstr
	* @return String
	*/
	public static final String full2HalfChange(String QJstr)
	{
	StringBuffer outStrBuf = new StringBuffer("");
	String Tstr = "";
	byte[] b = null;
	for (int i = 0; i < QJstr.length(); i++) {
	Tstr = QJstr.substring(i, i + 1);
	// 全角空格转换成半角空格
	if (Tstr.equals("　")) {
	outStrBuf.append(" ");
	continue;
	}
	try {
	b = Tstr.getBytes("unicode");
	// 得到 unicode 字节数据
	if (b[2] == -1) {
	// 表示全角
	b[3] = (byte) (b[3] + 32);
	b[2] = 0;
	outStrBuf.append(new String(b, "unicode"));
	} else {
	outStrBuf.append(Tstr);
	}
	} catch (UnsupportedEncodingException e) {
	// TODO Auto-generated catch block
	e.printStackTrace();
	}
	
	} // end for.
	return outStrBuf.toString();
	
	
	}
	
	
	
	/**
	* 半角转全角
	* @Methods Name half2Fullchange
	* @Create In 2012-8-24 By xiaowei
	* @param QJstr
	* @return String
	*/
	public static final String half2Fullchange(String QJstr)
	{
	StringBuffer outStrBuf = new StringBuffer("");
	String Tstr = "";
	byte[] b = null;
	for (int i = 0; i < QJstr.length(); i++) {
	Tstr = QJstr.substring(i, i + 1);
	if (Tstr.equals(" ")) {
	// 半角空格
	outStrBuf.append(Tstr);
	continue;
	}
	try {
	b = Tstr.getBytes("unicode");
	if (b[2] == 0) {
	// 半角
	b[3] = (byte) (b[3] - 32);
	b[2] = -1;
	outStrBuf.append(new String(b, "unicode"));
	} else {
	outStrBuf.append(Tstr);
	}
	return outStrBuf.toString();
	} catch (UnsupportedEncodingException e) {
	// TODO Auto-generated catch block
	e.printStackTrace();
	}
	
	}
	return outStrBuf.toString();
	}
	
	
	/**
	* @Methods Name main
	* @Create In 2012-8-24 By xiaowei
	* @param args
	* void
	*/
	public static void main(String[] args) {
	// TODO Auto-generated method stub
	String QJstr = "８１４乡道";
	String result = FullCharConverter.full2HalfChange(QJstr);
	System.out.println(QJstr);
	System.out.println(result);
	System.out.println("------------------------------------");
	// 半角转全角
	String str = "G45大广高速";
	System.out.println(str);
	System.out.println(FullCharConverter.half2Fullchange(str));
	}
	
	
	}

试试其它关键字

　字符串处理　　全角转半角　　半角转换全角　

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