如何在Java中将对象发送到socket数组

发布时间：2020-12-15 02:08:27 所属栏目：Java 来源：网络整理

导读：例： ArrayList arraySocket=new ArrayList();...arraySocket.add(client);...for (Object arraySocket1 : arraySocket) { DataOutputStream dataToClient = new DataOutputStream(arraySocket1.getOutputStream()); // it's wrong. But i don't know how to

例：

ArrayList arraySocket=new ArrayList();
...
arraySocket.add(client);
...
for (Object arraySocket1 : arraySocket) {
      DataOutputStream dataToClient = new DataOutputStream(arraySocket1.getOutputStream()); // it's wrong. But i don't know how to correct it.
      dataToClient.writeBytes(cData.getData()+"n");
}

解决方法

你需要使用泛型.

ArrayList<Socket> arraySocket = new ArrayList<>(); // works in Java 7 and above

ArrayList<Socket> arraySocket = new ArrayList<Socket>(); // for versions 6 and below

我假设List中的Object类型是Socket.然后你需要在for循环中使用正确的类型：

for (Socket arraySocket1 : arraySocket) {

（编辑：李大同）

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