class="代码" name="code">package com.chen.util;

import java.io.UnsupportedEncodingException;

public class Util {

public static void main(String args[]){

String gbk16 = convertStringToUTF8("今天天气真好","UTF-8");

System.out.println( gbk16);

System.out.println(convertUTF8ToString(gbk16,"UTF-8"));

//BDF1CCECCCECC6F8D5E6BAC3

}

/**

* UTF-8编码 转换为对应的 汉字

*

* URLEncoder.encode("上海", "UTF-8") ---> %E4%B8%8A%E6%B5%B7

* URLDecoder.decode("%E4%B8%8A%E6%B5%B7", "UTF-8") --> 上 海

*

* convertUTF8ToString("E4B88AE6B5B7")

* E4B88AE6B5B7 --> 上海

*

* @param s 字符串

* @param Encoder编码格式

* @return

*/

public static String convertUTF8ToString(String s,String Encoder) {

if (s == null || s.equals("")) {

return null;

}

try {

s = s.toUpperCase();

int total = s.length() / 2;

int pos = 0;

byte[] buffer = new byte[total];

for (int i = 0; i < total; i++) {

int start = i * 2;

buffer[i] = (byte) Integer.parseInt(

s.substring(start, start + 2), 16);

pos++;

}

return new String(buffer, 0, pos, Encoder);

} catch (UnsupportedEncodingException e) {

e.printStackTrace();

}

return s;

}

/**

* 将文件名中的汉字转为UTF8编码的串,以便下载时能正确显示另存的文件名.

*

* @param s原串

* @param Encoder编码格式

* @return

*/

public static String convertStringToUTF8(String s,String Encoder) {

if (s == null || s.equals("")) {

return null;

}

StringBuffer sb = new StringBuffer();

try {

char c;

for (int i = 0; i < s.length(); i++) {

c = s.charAt(i);

if (c >= 0 && c <= 255) {

sb.append(c);

} else {

byte[] b;

b = Character.toString(c).getBytes(Encoder);

for (int j = 0; j < b.length; j++) {

int k = b[j];

if (k < 0)

k += 256;

sb.append(Integer.toHexString(k).toUpperCase());

// sb.append("%" +Integer.toHexString(k).toUpperCase());

}

}

}

} catch (Exception e) {

e.printStackTrace();

}

return sb.toString();

}

}

?

代码如下

?

?