chineseutil.java

自己用JSP做的文件上传和下载组件

package shen.util;

import java.io.UnsupportedEncodingException;

/**
 * 中文乱码处理工具类
 * 
 * @author SHEN
 */
public class ChineseUtil
{
	/**
	 * 把数据转化为UTF-8
	 * 
	 * @param src
	 *            要转化的数据
	 * @return 转化为UTF-8的数据
	 */
	public static String toUtf8String(String s)
	{
		StringBuffer sb = new StringBuffer();
		for (int i = 0; i < s.length(); i++)
		{
			char c = s.charAt(i);
			if (c >= 0 && c <= 255)
			{
				sb.append(c);
			} 
			else
			{
				byte[] b;
				try
				{
					b = Character.toString(c).getBytes("utf-8");
				} catch (Exception ex)
				{
					System.out.println(ex);
					b = new byte[0];
				}
				for (int j = 0; j < b.length; j++)
				{
					int k = b[j];
					if (k < 0)
						k += 256;
					sb.append("%" + Integer.toHexString(k).toUpperCase());
				}
			}
		}
		return sb.toString();
	}
}