JAVA 写中文字符串到指定文件 中文乱码 问题解决

String as= “中文字符”;
    //byte[] b = as.getBytes();
    
    try{    
           File file=new File("F:test.txt");
           if(!json.exists()){
            file.createNewFile();
          }
           
           Writer writer = new OutputStreamWriter(new FileOutputStream(file.getAbsoluteFile()), "UTF-8");
           writer.write(as);
           writer.close();
        
//以字节流
//        FileOutputStream f = new FileOutputStream(json.getAbsoluteFile(),"UTF-8");
//        f.write(b);
//        f.flush();
//        f.close();
        
//以字符流的形式将拼装好的字符串写到 文件中
//       FileWriter fileWritter = new FileWriter(json.getAbsoluteFile());
//       fileWritter.write(as);
//       fileWritter.close();
    }
    catch (IOException e){
        e.getStackTrace();
    }