Java FileWriter 输出 UTF-8 的写法

原文：http://www.malcolmhardie.com/weblogs/angus/2004/10/23/java-filewriter-xml-and-utf-8/

Java FileWriter 默认是用（ISO-8859-1 or US-ASCII）西方编码的，总之不是UTF-8的，而FileWriter类有getEncoding方法，却没有setEncoding的方法，如下的写法可以使正确输出UTF-8的文件：

OutputStreamWriter out = new OutputStreamWriter(new FileOutputStream(path),"UTF-8");

或者

Writer out = new BufferedWriter( new OutputStreamWriter(new FileOutputStream(this.outputFilename),”UTF-8″));

使用装饰者模式转到Writer类上。