如何发送带有正文的HTTP GET？

Question

Boss wants us to send a HTTP GET with parameters in the body. I can't figure out how to do this using org.apache.commons.httpclient.methods.GetMethod or java.net.HttpURLConnection;.

GetMethod doesn't seem to take any parameters, and I'm not sure how to use HttpURLConnection for this.

Answer 1

HTTP GET method should NEVER have a body section. You can pass your parameters using URL query string or HTTP headers.

If you want to have a BODY section. Use POST or other methods.

Answer 2

You can extends the HttpEntityEnclosingRequestBase class to override the inherited org.apache.http.client.methods.HttpRequestBase.getMethod() but by fact HTTP GET does not support body request and maybe you will experience trouble with some HTTP servers, use at your own risk :)

public class MyHttpGetWithEntity extends HttpEntityEnclosingRequestBase { public final static String GET_METHOD = "GET";

public MyHttpGetWithEntity(final URI uri) {
    super();
    setURI(uri);
}

public MyHttpGetWithEntity(final String uri) {
    super();
    setURI(URI.create(uri));
}

@Override
public String getMethod() {
    return GET_METHOD;
}

}

then

import org.apache.commons.io.IOUtils;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.DefaultHttpClient;

public class HttpEntityGet {

    public static void main(String[] args) {

        try {
            HttpClient client = new DefaultHttpClient();
            MyHttpGetWithEntity e = new MyHttpGetWithEntity("http://....");
            e.setEntity(new StringEntity("mystringentity"));
            HttpResponse response = client.execute(e);
            System.out.println(IOUtils.toString(response.getEntity().getContent()));
        } catch (Exception e) {
            System.err.println(e);
        }
    }
}