要在Java中集成Modbus TCP和HTTP接口,可以使用第三方库来处理Modbus通信,并使用内置的Java HTTP库来处理HTTP请求。
// 导入JAMOD库
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;
// 创建ModbusMaster对象
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();
// 创建HTTP请求
URL url = new URL("http://example.com/api/endpoint");
HttpURLConnection con = (HttpURLConnection) url.openConnection();
con.setRequestMethod("GET");
// 发送HTTP请求并获取响应
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());
综合起来,可以在Java中集成Modbus TCP和HTTP接口,分别使用JAMOD库处理Modbus通信和Java HTTP库处理HTTP请求。根据具体需求,可以选择合适的第三方库或框架来完成集成。