通過UDP

Question

發送陣列（未排列的列表）我有陣列這樣在客戶端

INT ARR [] =新INT [] {1，6,3,1，2,9};

我怎麼可以通過UDP發送到服務器？以及我如何在SERVER端讀取它？

Answer 1

將數組轉換爲字節數組，然後發送字節數組。接收器將字節數組轉換回int [];您可以使用類DataOutputStream創建字節數組。

ByteArrayOutputStream bos = new ByteArrayOutputStream(); 
    DataOutputStream dos = new DataOutputStream(bos); 
    int len = 0; 
    in protokollVersion = 1; 
    // Write a version, in case you want to change your format later, such that 
    // the receiver has a chance to detect which format version is used. 
    dos.writeInt(protokollVersion); 
    if (arr != null) { 
     len = arr.length; 
    } 
    dos.writeInt(arr.length); 
    for (int i = 0; i < len; i++) { 
     dos.writeInt(arr[i]); 
    } 
    dos.close(); 
    byte[] bytes = bos.getBytes(); 

在接收器側，讀取使用DataInputStream(byte[] bytes)和DataInputStream.readInt()字節數組。