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  • 使用Socket模拟一个简单的Webservice调用

    webservice是对socket的一个封装,让远程调用调用变得更加简单,那么使用socket究竟有多么麻烦呢?来看看。
    做一个简单的天气查询:
    服务端:

    public class SocketServer {
    
        public static void main(String[] args) {
            DataInputStream dataInputStream = null;
            DataOutputStream dataOutputStream = null;
            try {
                // 启动socket服务端
                ServerSocket serverSocket = new ServerSocket(8888);
                /**
                 * 加上while(true),让服务端一直保持运行,负责当有一个客户端连接成功以后,服务端就停止运行了。
                 */
                while (true) {
                        // 监听客户端连接,accept()方法是阻塞方法,如果没有客户端连接,其后的代码不会执行
                        Socket socket = serverSocket.accept();
                        dataInputStream = new DataInputStream(
                                socket.getInputStream());
                        dataOutputStream = new DataOutputStream(
                                socket.getOutputStream());
                        //获得客户端传来的城市名称
                        String cityName = dataInputStream.readUTF();
                        System.out.println("from client..." + cityName);
    
                        //查询天气并返回查询结果
                        String result = "晴天";
                        dataOutputStream.writeUTF(result);
                }
            } catch (IOException e) {
                e.printStackTrace();
            }finally{
                try {
                    if(dataOutputStream!=null)
                        dataOutputStream.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
                try {
                    if(dataInputStream!=null)
                        dataInputStream.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }

    客户端:

    public class SocketClient {
        public static void main(String[] args) {
            Socket socket = null;
            DataOutputStream dataOutputStream = null;
            DataInputStream dataInputStream = null;
            try {
                //创建Socket连接
                socket = new Socket("127.0.01", 8888);
                //得到输出流
                dataOutputStream = new DataOutputStream(socket.getOutputStream());
                //发送数据
                dataOutputStream.writeUTF("海口");
                //接收数据
                dataInputStream = new DataInputStream(socket.getInputStream());
                //得到输入流
                String result = dataInputStream.readUTF();
                System.out.println(result);
            } catch (IOException e) {
                e.printStackTrace();
            }finally{
                try {
                    if(socket!=null)
                        socket.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
                try {
                    if(dataInputStream!=null)
                        dataInputStream.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
                try {
                    if(dataOutputStream!=null)
                        dataOutputStream.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }

    使用socket都是用流来传输数据,要防止编码问题,要打开流,关闭流,而如果使用webservice则完全不必考虑这些。

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  • 原文地址:https://www.cnblogs.com/lenve/p/4517984.html
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