银企直联-前置机-企业接入-Java-socket

银企直联一般都是通过前置机与银行服务进行通信，企业服务前置机银行三者关系如下

在企业应用在这里就相当于客户端，前置机就相当服务端
ERP 与 CT 之间的交易数据报文采用 TCP/IP 协议的 Socket 同步短连接方式。

这里有个ERP 与 CT 通信的简单的demo

import java.io.*;
import java.net.Socket;
import java.net.UnknownHostException;

/**
 * @Title:
 * @Description: 接收第三方--->发送前置机--->接收前置机--->发送第三方 等步奏
 * @Created by yangjie on 2020/5/19/14:23.
 */

public class SocketDemo {
    public static void main(String[] args) {
        Socket socket = null;
        OutputStream outputStream = null;
        InputStream inputStream = null;
        BufferedReader bufferedReader = null;
        try {
            socket = new Socket("192.168.13.51", 10010);
            String reqNo = "ly0000"+ DateUtil.getDateStr();
            String pay_acno = ""; // 付款账号
            String pay_acname = ""; // 付款户名
            String xml01 = "<ap>n" +
                    "    <head>n" +
                    "        <tr_code>416B300002</tr_code>n" +
                    "        <cms_corp_no></cms_corp_no>n" +
                    "        <req_no>"+reqNo+"</req_no>n" +
                    "        <tr_acdt>"+ DateUtil.getDateStrNoSSS() +"</tr_acdt>n" +
                    "        <tr_time>"+DateUtil.getTimeStrSSS()+"</tr_time>n" +
                    "        <channel>5</channel>n" +
                    "        <sign>1</sign>n" +
                    "        <file_flag>0</file_flag>n" +
                    "        <Reserved1></Reserved1>n" +
                    "        <Reserved></Reserved>n" +
                    "    </head>n" +
                    "    <body>n" +
                    "        <pay_acno>"+pay_acno+"</pay_acno>n" +
                    "        <vir_acno></vir_acno>n" +
                    "        <vir_acname></vir_acname>n" +
                    "        <batch_no>"+reqNo+"</batch_no>n" +
                    "        <supply_item>1001</supply_item>n" +
                    "    </body>n" +
                    "</ap>";
            System.out.println("请求报文：rn" + xml01);
            outputStream = socket.getOutputStream();
            outputStream.write(xml01.getBytes());
            outputStream.flush();
            inputStream = socket.getInputStream();
            bufferedReader = new BufferedReader(new InputStreamReader(inputStream,"GBK") );
            String readData = null;
            System.out.println("响应报文：rn");
            while ((readData = bufferedReader.readLine()) != null) {
                System.out.println(readData);
            }
        } catch (UnknownHostException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                if (outputStream != null)
                    outputStream.close();
                if (bufferedReader != null)
                    bufferedReader.close();
                if (inputStream != null)
                    inputStream.close();
                if (socket != null)
                    socket.close();
            } catch (IOException exception) {
                exception.printStackTrace();
            }
        }
    }
}

来源：oschina

链接：https://my.oschina.net/u/3690153/blog/4291880

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