Socket客户端通用代码

最新推荐文章于 2024-07-26 17:11:03 发布

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最新推荐文章于 2024-07-26 17:11:03 发布

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CC 4.0 BY-SA版权

本文链接：https://blog.youkuaiyun.com/qq_24897081/article/details/92835857

这段Java代码展示了如何创建一个通用的Socket客户端，用于连接指定IP和端口，发送UTF-8编码的XML报文，并接收响应。报文头包含字节长度信息，通过字节流进行传输。

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项目中一直使用的就是这部分源码。字符集是utf-8，xml报文格式，需要在报文头拼上字节长度。传输方式是字节流。发出来，与大家共勉。

public static Map queryESB(String xml) throws Exception {

StringBuilder errorMsg = new StringBuilder();

Map bodymap = new HashMap();

Map<String, String> proMap = PropertiesUtil.buildproperties();

String ip = proMap.get("ip");
int port = Integer.parseInt(proMap.get("port"));

       String responseMessage = "";
       Socket socket = null;
       try {
           socket = new Socket(ip, port);
           socket.setSoTimeout(60 * 1000);
           InputStream in = socket.getInputStream();
           OutputStream out = socket.getOutputStream();
           out.write(xml.getBytes("UTF-8"));
           out.flush();
           byte[] header = new byte[8];
           int headerLength = in.read(header);
           String charset = "UTF-8";
           String headerInfo = "";
           int length = 0;
           byte[] body;
           if (headerLength != 8) {
               errorMsg.append("报文长度字节不足8位!"+headerLength);
           } else {
               headerInfo = new String(header, charset);
               length = Integer.parseInt(headerInfo.trim());
               body = new byte[length];
               int off = 0;
               while (true) {
                   int ret = in.read(body, off, body.length - off);
                   if (ret <= 0) {
                       break;
                   }
                   off += ret;
               }
               responseMessage = new String(body, charset);

               System.out.println("返回报文："+responseMessage);
           }

       } catch (Exception e) {
           errorMsg.append("发送失败！"+e);
           System.out.println("ESB request is fail");
       } finally {
           try {
               socket.close();
           } catch (IOException e) {
               errorMsg.append("客户端关闭socket异常！");
           }
       }
       if (errorMsg.length() == 0) {
           bodymap = resolveXML(errorMsg, responseMessage);
       }

return bodymap;
}