InputStreamReader的中文乱码的问…

ServerSocket serverSocket = new ServerSocket(5432);

Socket client2 = serverSocket.accept();

String str="";

BufferedReader input = new BufferedReader(new InputStreamReader(client2.getInputStream(),"gb2312"));

String tempString ="";

        

 // 一次读入一行，直到读入null为文件结束

while ((tempString = input.readLine()) != null) 

{

str+=tempString+"\n";

}             

input.close();