Java文件读写操作指定编码方式。。。。。

读：

File file=new File(this.filePath);
BufferedReader br=new BufferedReader(new InputStreamReader(new FileInputStream(file),"utf-8"));

String line=null;
        while((line=br.readLine())!=null){
            if(!line.trim().equals("")){
                if(checkDuplicateRow(line.trim()))
                tempList.add(line.trim());
            }
        }

写：

File filename = new File("xxx");
                filename.createNewFile();
                FileWriter fw = new FileWriter(filename);
                
                PrintWriter out = new PrintWriter(new BufferedWriter(new OutputStreamWriter(new FileOutputStream(filename),"GBk")));
                out.write(hexToString(search_result));
                out.flush();
                out.close();