package com.jarvis.base.util;
import java.io.IOException;
import java.io.StringReader;
import java.io.UnsupportedEncodingException;
/**
* <p>
* Title:字符编码工具类
* </p>
* <p>
* Description:
* </p>
* <p>
* Copyright: Copyright (c) 2007
* </p>
* <p>
* Company:
* </p>
*
* @author:
* @version 1.0
*/
public class CharHelper {
/**
* 转换编码 ISO-8859-1到GB2312
*
* @param text
* @return
*/
public static final 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 static final String GB2ISO(String text) {
String result = "";
try {
result = new String(text.getBytes("GB2312"), "ISO-8859-1");
} catch (UnsupportedEncodingException ex) {
ex.printStackTrace();
}
return result;
}
public static String GBK2UTF8(String strVal) {
try {
if (strVal == null) {
return "";
} else {
strVal = new String(strVal.getBytes("GBK"), "UTF-8");
return strVal;
}
} catch (Exception exp) {
return "";
}
}
/**
* 字符串从GBK编码转换为Unicode编码
*
* @param text
* @return
*/
public static String GBK2Unicode(String text) {
String result = "";
int input;
StringReader isr;
try {
isr = new StringReader(new String(text.getBytes(), "GBK"));
} catch (UnsupportedEncodingException e) {
return "-1";
}
try {
while ((input = isr.read()) != -1) {
result = result + "&#x" + Integer.toHexString(input) + ";";
}
} catch (IOException e) {
return "-2";
}
isr.close();
return result;
}
/**
* Author:Jack Time:2017年9月2日下午5:40:19
*
* @param strVal
* @return Return:String Description:
*/
public static String ISO2UTF8(String strVal) {
try {
if (strVal == null) {
return "";
} else {
strVal = new String(strVal.getBytes("ISO-8859-1"), "UTF-8");
return strVal;
}
} catch (Exception exp) {
return "";
}
}
/**
* Author:Jack Time:2017年9月2日下午5:40:25
*
* @param strVal
* @return Return:String Description:
*/
public static String UTF82ISO(String strVal) {
try {
if (strVal == null) {
return "";
} else {
strVal = new String(strVal.getBytes("UTF-8"), "ISO-8859-1");
return strVal;
}
} catch (Exception exp) {
return "";
}
}
/**
* 把字符串转换为UTF8859编码
*
* @param source
* 需要进行转换的字符串
*/
public static final String GBKto8859(String source) {
String temp = null;
if (source == null || source.equals("")) {
return source;
}
try {
temp = new String(source.getBytes("GBK"), "8859_1");
} catch (Exception e) {
e.printStackTrace();
System.err.println("Convert code Error");
}
return temp;
}
/**
* 把字符串转换为GBK编码
*
* @param source
* 需要进行转换的字符串
*/
public static final String toGBK(String source) {
String temp = null;
if (source == null || source.equals("")) {
return source;
}
try {
temp = new String(source.getBytes("8859_1"), "GBK");
} catch (Exception e) {
e.printStackTrace();
System.err.println("Convert code Error");
}
return temp;
}
/**
* 把字符串转换为gb2312编码
*
* @param source
* 需要进行转换的字符串
*/
public static final String toGb2312(String source) {
String temp = null;
if (source == null || source.equals("")) {
return source;
}
try {
temp = new String(source.getBytes("8859_1"), "GB2312");
} catch (Exception e) {
e.printStackTrace();
System.err.println("转换字符串为gb2312编码出错");
}
return temp;
}
/**
* 把中文字符串，转换为unicode字符串
*
* @param source
* 需要进行转换的字符串
* @return 转换后的unicode字符串
*/
public static String chineseToUnicode(String source) {
if (source == null || source.trim().length() == 0) {
return source;
}
String unicode = null;
String temp = null;
for (int i = 0; i < source.length(); i++) {
temp = "\\u" + Integer.toHexString((int) source.charAt(i));
unicode = unicode == null ? temp : unicode + temp;
}
return unicode;
}
/**
* 在将数据存入数据库前转换
*
* @param strVal
* 要转换的字符串
* @return 从“ISO8859_1”到“GBK”得到的字符串
* @since 1.0
*/
public static String toChinese(String strVal) {
try {
if (strVal == null) {
return "";
} else {
strVal = strVal.trim();
strVal = new String(strVal.getBytes("ISO8859_1"), "GBK");
return strVal;
}
} catch (Exception exp) {
return "";
}
}
/**
* Utf8URL编码
*
* @param s
* @return
*/
public static final 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 static final 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 static final 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
*/
@SuppressWarnings("unused")
private static final 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");
}
/**
* 判断是否Utf8Url编码
*
* @param text
* @return
*/
public static final 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 (CharHelper.isUtf8Url(url)) {
System.out.println(CharHelper.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 (CharHelper.isUtf8Url(url)) {
System.out.println(CharHelper.Utf8URLdecode(url));
} else {
// System.out.println(URLDecoder.decode(url));
}
}
}
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