使用dom4j的XMLWrtier输出的问题。如果XML里面包含了一些特殊字符，比如 &保存的时候会转义成＆amp;
即使你设了SetEscapeText(false) 也没用。
XMLWriter writer = new XMLWriter(fos);
writer.setEscapeText(false);
writer.write(document);
得用普通的文本处理
FileOutputStream out = new FileOutputStream(filename);
OutputSteamWriter writer = new OutputSteamWriter (out,"utf-8");
Writer.write(doc.asXML().replace("&",“＆”));
Writer.flush();
out.close();
OutputSteamWriter writer = new OutputSteamWriter (out,"utf-8");
Writer.write(doc.asXML().replace("&",“＆”));
Writer.flush();
out.close();