??? ??? eXtremeComponents的中文的問題，目前知道的就是導(dǎo)出使用中文文件名的亂碼問題，eXtremeComponents已經(jīng)默認(rèn)使用UTF來導(dǎo)出XLS，也已經(jīng)給出了PDF導(dǎo)出的解決方案：
最新eXtremeComponents包：支持 PDF中文導(dǎo)出??? ???? 網(wǎng)友seno指出可以參照SpringSide的解決方案，對文件名進(jìn)行toUtf8編碼。不過，在我自己實(shí)際應(yīng)用中，我的一個(gè)應(yīng)用根本不需要進(jìn)行任何形式的修正就能正確地生成正確的文件名輸出，如果我在eXtremeComponents添加了toUtf8導(dǎo)出的文件名反而亂碼。所以現(xiàn)在的問題是我什么時(shí)候需要對文件名進(jìn)行toUtf8編碼？這是這段時(shí)間一直困擾我的問題，在網(wǎng)友冷月宮主和MagicYang的幫助，昨天經(jīng)過一整天的查找測試找到了一個(gè)暫時(shí)看來令我比較滿意的解決方案（暫時(shí)沒有CheckIn）： 我對得到的文件名字符串使用jchardet（http://jchardet.sourceforge.net/）進(jìn)行編碼檢測，如果檢測編碼是ASCII碼則直接返回原字符串，否則的話是用SpringSide提供的toUtf8方法（比我原來的簡潔有效）對字符串進(jìn)行編碼后再返回新的字符串。對應(yīng)的代碼如下：
????
/*
?*?Copyright?2004?original?author?or?authors.
?*
?*?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?org.extremecomponents.table.filter;
import?org.apache.commons.lang.StringUtils;
import?org.apache.commons.logging.Log;
import?org.apache.commons.logging.LogFactory;
import?org.extremecomponents.table.context.Context;
import?org.extremecomponents.table.core.TableConstants;
import?org.mozilla.intl.chardet.nsDetector;
import?org.mozilla.intl.chardet.nsICharsetDetectionObserver;
import?org.mozilla.intl.chardet.nsPSMDetector;
/**
?*?@author?Jeff?Johnston
?*/
public?final?class?ExportFilterUtils?{
????private?static?Log?logger?=?LogFactory.getLog(ExportFilterUtils.class);
????public?static?boolean?found?=?false;
????private?ExportFilterUtils()?{
????}
????public?static?boolean?isExported(Context?context)?{
????????return?StringUtils.isNotBlank(getTableId(context));
????}
????public?static?String?getExportFileName(Context?context)?{
????????String?tableId?=?getTableId(context);
????????if?(StringUtils.isNotBlank(tableId))?{
????????????String?exportFileNameStr?=?tableId?+?"_"?+?TableConstants.EXPORT_FILE_NAME;
????????????String?exportFileName?=?verifyEncoding(context.getParameter(exportFileNameStr));
????????????if?(logger.isDebugEnabled())?{
????????????????logger.debug("eXtremeTable?export?file?name?["?+?exportFileNameStr?+?"]?is?["?+?exportFileName?+?"]");
????????????}
????????????return?exportFileName;
????????}
????????return?null;
????}
????private?static?String?verifyEncoding(String?exportFileName)?{
????????nsDetector?det?=?new?nsDetector(nsPSMDetector.ALL);
????????det.Init(new?nsICharsetDetectionObserver()?{
????????????public?void?Notify(String?charset)?{
????????????????ExportFilterUtils.found?=?true;
????????????}
????????});
????????boolean?done?=?false;
????????boolean?isAscii?=?true;
????????byte[]?buf?=?exportFileName.getBytes();
????????for?(int?i?=?0;?i?<?buf.length;?i++)?{
????????????if?(isAscii)
????????????????isAscii?=?det.isAscii(buf,?i);
????????????if?(!isAscii?&&?!done)
????????????????done?=?det.DoIt(buf,?i,?false);
????????}
????????det.DataEnd();
????????if?(isAscii)?{
????????????return?exportFileName;
????????}
????????return?toUtf8(exportFileName);
????}
????public?static?String?toUtf8(String?src)?{
????????byte[]?b?=?src.getBytes();
????????char[]?c?=?new?char[b.length];
????????for?(int?i?=?0;?i?<?b.length;?i++)?{
????????????c[i]?=?(char)?(b[i]?&?0x00FF);
????????}
????????return?new?String(c);
????}
????/**
?????*?There?can?only?be?one?table?instance?(tableId)?per?form.?If?the?instance
?????*?variable?exists?that?means?there?is?an?export?being?done.
?????*
?????*?@param?context
?????*?@return
?????*/
????public?static?String?getTableId(Context?context)?{
????????return?context.getParameter(TableConstants.EXPORT_TABLE_ID);
????}
}
????? 經(jīng)過我們?nèi)齻€(gè)人測試是成功的。歡迎大家?guī)椭鷾y試。大家如果有任何意見、建議可與我聯(lián)系： xplucky@gmail.com
????? 壓縮文件只包含： eXtremeComponents.jar eXtremeComponents.tld 和 jchardet.jar
??????
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