1、返回400
``` public static synchronized String tcpPost(String clientIp,String clientPort,String msg){
String rs = "";
if(clientIp==null||"".equals(clientIp)||clientPort==null||"".equals(clientPort)){
logger.error("Ip或端口不存在...");
return null;
}
int clientPortInt = Integer.parseInt(clientPort);
logger.info("clientIp:"+clientIp+" clientPort:"+clientPort);
Socket s = null;
OutputStream out = null;
InputStream in = null;
try {
s = new Socket(clientIp, clientPortInt);
s.setSendBufferSize(4096);
s.setTcpNoDelay(true);
s.setSoTimeout(60*1000);
s.setKeepAlive(true);
out = s.getOutputStream();
in = s.getInputStream();
//准备报文msg
logger.info("准备发送报文:"+msg);
out.write(msg.getBytes("GBK"));
out.flush();
byte[] rsByte = readStream(in);
if(rsByte!=null){
rs = new String(rsByte, "GBK");
}
} catch (Exception e) {
logger.error("tcpPost发送请求异常:"+e.getMessage());
}finally{
logger.info("tcpPost(rs):"+rs);