要在Java中集成Modbus TCP和HTTP接口,可以使用第三方庫來處理Modbus通信,并使用內置的Java HTTP庫來處理HTTP請求。
// 導入JAMOD庫
import net.wimpi.modbus.ModbusCoupler;
import net.wimpi.modbus.ModbusDeviceIdentification;
import net.wimpi.modbus.io.ModbusTCPTransaction;
import net.wimpi.modbus.msg.ReadInputDiscretesRequest;
import net.wimpi.modbus.msg.ReadInputDiscretesResponse;
import net.wimpi.modbus.net.TCPMasterConnection;
import net.wimpi.modbus.procimg.SimpleDigitalIn;
import net.wimpi.modbus.procimg.SimpleDigitalOut;
import net.wimpi.modbus.util.BitVector;
// 創建ModbusMaster對象
TCPMasterConnection con = new TCPMasterConnection("192.168.1.1");
ReadInputDiscretesRequest req = new ReadInputDiscretesRequest(0, 10);
req.setUnitID(1);
ModbusTCPTransaction trans = new ModbusTCPTransaction(con);
trans.setRequest(req);
trans.execute();
ReadInputDiscretesResponse res = (ReadInputDiscretesResponse) trans.getResponse();
BitVector bv = res.getDiscretes();
// 創建HTTP請求
URL url = new URL("http://example.com/api/endpoint");
HttpURLConnection con = (HttpURLConnection) url.openConnection();
con.setRequestMethod("GET");
// 發送HTTP請求并獲取響應
BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream()));
String inputLine;
StringBuilder response = new StringBuilder();
while ((inputLine = in.readLine()) != null) {
response.append(inputLine);
}
in.close();
System.out.println(response.toString());
綜合起來,可以在Java中集成Modbus TCP和HTTP接口,分別使用JAMOD庫處理Modbus通信和Java HTTP庫處理HTTP請求。根據具體需求,可以選擇合適的第三方庫或框架來完成集成。