soceket发来的数显示显示全是乱码，错在哪里了？

import java.io.*; import java.net.*; import java.sql.*;  public class acnu{  public static void main(String args[]) throws IOException{   acnu();   //stnu();   //ReceiveFiles();  }    public static void ReceiveFiles() throws IOException {   int i = 0;   ServerSocket server = new ServerSocket(800);   System.out.println("server将永远等待连接的到来");   Socket socket = server.accept();   InputStream inputStream = socket.getInputStream();   byte[] bytes = new byte[1024];   String path_temp = File.separator   "home"   File.separator   "lishulin"   File.separator   "666"   File.separator   "166"   File.separator   String.valueOf(i  )   ".xls";   OutputStream outs = new BufferedOutputStream(new FileOutputStream(path_temp));   System.out.println("服务器正在接收文件...");   inputStream = socket.getInputStream();   while (inputStream.read(bytes) != -1) {    outs.write(bytes);   }   outs.flush();   server.close();   socket.close();   inputStream.close();   outs.close();   System.out.println("接收服务器后");            }     /**  *@breif: server accept number  */    public static void acnu() throws IOException{   var ss = new ServerSocket(800);   while(true){     System.out.println("\n");    System.out.println("等待Socket发数...");    Socket s = ss.accept();    var in = new BufferedReader(new InputStreamReader(s.getInputStream()));    String sv = null;    while((sv = in.readLine())!= null){     System.out.println("Socket发来的报告文件名为："   sv);    }    in.close();    s.close();   }       }       public static void stnu(int price){   try{    Class.forName("com.mysql.jdbc.Driver");    Connection conn=DriverManager.getConnection("jdbc:mysql://localhost:3306/aa?useUnicode=true&characterEncoding=utf8","root","jian8182");    Statement stmt=conn.createStatement();    String sql ="insert into u values("   price   ");";    var rs=stmt.execute(sql);      //String sql ="show tables;";    //String sql ="desc u;";    //String sql ="select * from u;";    //ResultSet rs=stmt.executeQuery(sql);    //var rs=stmt.executeQuery(sql);//watch databases;    /**    for(int i=0;i<5;i  ){       stmt.executeUpdata(sql);    }    */    //String sql2 = "use aa;";    //ResultSet rs2 = stmt.executeQuery(sql2);    //String sql3 = "desc test;";    //ResultSet rs3 = stmt.executeQuery(sql2);    /**    while(rs.next()){     System.out.println(rs.getString(1));    }    */   }catch(Exception e){    e.printStackTrace();   }       }   }