java socket发送xml报文

ServerRun.java

import java.io.InputStream;
import java.net.ServerSocket;
import java.net.Socket;
 
public class ServerRun {
 
    public static void main(String[] args) throws Exception {
        ServerSocket server = new ServerSocket(3456);
        System.out.println("-----正在监听3456端口---");
        Socket socket = server.accept();
        InputStream is = socket.getInputStream();
        // 前8个字节
        byte[] b = new byte[8];
        is.read(b);
        int len = Integer.parseInt(new String(b, "UTF-8"));
 
        // 用来填充xml
        b = new byte[len];
        is.read(b);
 
        // 关闭资源
        is.close();
        socket.close();
        server.close();
 
        String result = new String(b, "UTF-8");
        System.out.println(result);
 
    }
 
}

ClientRun.java

import java.io.OutputStream;
import java.net.Socket;
 
public class ClientRun {
 
    public static void main(String[] args) throws Exception {
        String xml = "<xml>\r\n" +
                        "<name>张山</name>\r\n" +
                        "<amt>100000</amt>\r\n" +
                        "<time>20171011091230</time>\r\n" +
                        "<type>支出</type>\r\n" +
                        "<opt>信用卡还款</opt>\r\n" +
                        "<phone>18940916007</phone>\r\n" +
                        "</xml>";
        Socket client = new Socket("127.0.0.1", 3456);
        OutputStream out = client.getOutputStream();
 
        byte[] b = xml.getBytes("UTF-8");
 
        out.write(int2Bytes8(b.length));
        out.write(b);
        out.close();
        client.close();
    }
 
    /**
     * @Title: int2Bytes8
     * @Description: 数字[2] 变成八个字节的 ['0' '0' '0' '0' '0' '0' '0' '2']
     * @param: @param num
     * @param: @return
     * @return: byte[]
     */
    public static byte[] int2Bytes8(int num) {
        StringBuffer sb = new StringBuffer(String.valueOf(num));
        int length = 8 - sb.length();
        for (int i = 0; i < length; i++) {
            sb.insert(0, '0');
        }
        return sb.toString().getBytes();
    }
}

注:代码中字符串的拼接

是eclipse自动完成的,我只是从wps ( 其他文本编辑器也可以)里面复制到

String str="copy here";