java 百分号编码工具类_JAVA 对 URL 进行编码与解码

àì夳堔傛蜴生んèń 2022-11-08 06:08 225阅读 0赞

import java.io.UnsupportedEncodingException;

import java.net.URLEncoder;

import java.net.URLDecoder;

/\*\*

Title:字符编码工具类

Description:

Company: flashman.com.cn

\* @author: jeffzhu

\* @version 1.0

\*/

public class CharTools \{

/\*\*

\* 转换编码 ISO-8859-1到GB2312

\* @param text

\* @return

\*/

public String ISO2GB(String text) \{

String result = "";

try \{

result = new String(text.getBytes("ISO-8859-1"), "GB2312");

catch (UnsupportedEncodingException ex) \{

result = ex.toString();

return result;

/\*\*

\* 转换编码 GB2312到ISO-8859-1

\* @param text

\* @return

\*/

public String GB2ISO(String text) \{

String result = "";

try \{

result = new String(text.getBytes("GB2312"), "ISO-8859-1");

catch (UnsupportedEncodingException ex) \{

ex.printStackTrace();

return result;

/\*\*

\* Utf8URL编码

\* @param s

\* @return

\*/

public String Utf8URLencode(String text) \{

StringBuffer result = new StringBuffer();

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

char c = text.charAt(i);

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

result.append(c);

\}else \{

byte\[\] b = new byte\[0\];

try \{

b = Character.toString(c).getBytes("UTF-8");

\}catch (Exception ex) \{

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

int k = b\[j\];

if (k < 0) k += 256;

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

return result.toString();

/\*\*

\* Utf8URL解码

\* @param text

\* @return

\*/

public String Utf8URLdecode(String text) \{

String result = "";

int p = 0;

if (text!=null && text.length()>0)\{

text = text.toLowerCase();

p = text.indexOf("%e");

if (p == -1) return text;

while (p != -1) \{

result += text.substring(0, p);

text = text.substring(p, text.length());

if (text == "" || text.length() < 9) return result;

result += CodeToWord(text.substring(0, 9));

text = text.substring(9, text.length());

p = text.indexOf("%e");

return result + text;

/\*\*

\* utf8URL编码转字符

\* @param text

\* @return

\*/

private String CodeToWord(String text) \{

String result;

if (Utf8codeCheck(text)) \{

byte\[\] code = new byte\[3\];

code\[0\] = (byte) (Integer.parseInt(text.substring(1, 3), 16) - 256);

code\[1\] = (byte) (Integer.parseInt(text.substring(4, 6), 16) - 256);

code\[2\] = (byte) (Integer.parseInt(text.substring(7, 9), 16) - 256);

try \{

result = new String(code, "UTF-8");

\}catch (UnsupportedEncodingException ex) \{

result = null;

else \{

result = text;

return result;

/\*\*

\* 编码是否有效

\* @param text

\* @return

\*/

private boolean Utf8codeCheck(String text)\{

String sign = "";

if (text.startsWith("%e"))

for (int i = 0, p = 0; p != -1; i++) \{

p = text.indexOf("%", p);

if (p != -1)

p++;

sign += p;

return sign.equals("147-1");

/\*\*

\* 是否Utf8Url编码

\* @param text

\* @return

\*/

public boolean isUtf8Url(String text) \{

text = text.toLowerCase();

int p = text.indexOf("%");

if (p != -1 && text.length() - p > 9) \{

text = text.substring(p, p + 9);

return Utf8codeCheck(text);

/\*\*

\* 测试

\* @param args

\*/

public static void main(String\[\] args) \{

CharTools charTools = new CharTools();

String url;

url = "http://www.google.com/search?hl=zh-CN&newwindow=1&q=%E4%B8%AD%E5%9B%BD%E5%A4%A7%E7%99%BE%E7%A7%91%E5%9C%A8%E7%BA%BF%E5%85%A8%E6%96%87%E6%A3%80%E7%B4%A2&btnG=%E6%90%9C%E7%B4%A2&lr=";

if(charTools.isUtf8Url(url))\{

System.out.println(charTools.Utf8URLdecode(url));

\}else\{

System.out.println(URLDecoder.decode(url));

url = "http://www.baidu.com/baidu?word=%D6%D0%B9%FA%B4%F3%B0%D9%BF%C6%D4%DA%CF%DF%C8%AB%CE%C4%BC%EC%CB%F7&tn=myie2dg";

if(charTools.isUtf8Url(url))\{

System.out.println(charTools.Utf8URLdecode(url));

\}else\{

System.out.println(URLDecoder.decode(url));

java 百分号编码工具类_JAVA 对 URL 进行编码与解码

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