/* * Copyright (c) 2013.  * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * *      http://www.apache.org/licenses/LICENSE-2.0 * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */package com.example.kjdemo.utils;import org.apache.http.protocol.HTTP;import java.util.ArrayList;import java.util.List;/** * Created by wyouflf on 13-8-30. */public class CharsetUtils {    private CharsetUtils() {    }    public static String toCharset(final String str, final String charset, int judgeCharsetLength) {        try {            String oldCharset = getEncoding(str, judgeCharsetLength);            return new String(str.getBytes(oldCharset), charset);        } catch (Throwable ex) {            LogUtils.w(ex);            return str;        }    }    public static String getEncoding(final String str, int judgeCharsetLength) {        String encode = CharsetUtils.DEFAULT_ENCODING_CHARSET;        for (String charset : SUPPORT_CHARSET) {            if (isCharset(str, charset, judgeCharsetLength)) {                encode = charset;                break;            }        }        return encode;    }    public static boolean isCharset(final String str, final String charset, int judgeCharsetLength) {        try {            String temp = str.length() > judgeCharsetLength ? str.substring(0, judgeCharsetLength) : str;            return temp.equals(new String(temp.getBytes(charset), charset));        } catch (Throwable e) {            return false;        }    }    public static final String DEFAULT_ENCODING_CHARSET = HTTP.DEFAULT_CONTENT_CHARSET;    public static final List
     
       SUPPORT_CHARSET = new ArrayList
      
       ();    static {        SUPPORT_CHARSET.add("ISO-8859-1");        SUPPORT_CHARSET.add("GB2312");        SUPPORT_CHARSET.add("GBK");        SUPPORT_CHARSET.add("GB18030");        SUPPORT_CHARSET.add("US-ASCII");        SUPPORT_CHARSET.add("ASCII");        SUPPORT_CHARSET.add("ISO-2022-KR");        SUPPORT_CHARSET.add("ISO-8859-2");        SUPPORT_CHARSET.add("ISO-2022-JP");        SUPPORT_CHARSET.add("ISO-2022-JP-2");        SUPPORT_CHARSET.add("UTF-8");    }}