我正在尝试使用 Californium 向 coap 服务器(er-rest-example)发出请求。我成功地做了一个 POST 请求。但是使用 PUT 我收到了一个错误的请求,我尝试在 url 中使用这个 URL:
coap://[aaaa::c30c:0000:0000:0002]:5683/actuators/leds
coap://[aaaa::c30c:0000:0000:0002]:5683/actuators/leds?
coap://[aaaa::c30c:0000:0000:0002]:5683/actuators/leds?color=r
但是没有人获得成功。我做错了什么?
这是我的简单脚本:
package coap_client;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.Arrays;
import java.util.Timer;
import java.util.TimerTask;
import org.eclipse.californium.core.CoapClient;
import org.eclipse.californium.core.CoapResponse;
import org.eclipse.californium.core.coap.MediaTypeRegistry;
public class cliente {
public static void main(String[] args) throws Exception {
Timer timer;
timer = new Timer();
TimerTask task = new TimerTask(){
@Override
public void run(){
String url="coap://[aaaa::c30c:0000:0000:0002]:5683/actuators/leds";
URI uri= null;
try {
uri = new URI(url);
} catch (URISyntaxException e) {
e.printStackTrace();
}
CoapClient client = new CoapClient(uri);
CoapResponse response = client.put("color=r",MediaTypeRegistry.TEXT_PLAIN);
System.out.println(response.isSuccess());
if (response!=null) {
byte[] myreponse=response.getPayload();
String respuesta2 = new String(myreponse);
System.out.println(respuesta2);
}
}
};
timer.schedule(task, 10,10*1000);
}
}