<dependency> <groupId>commons-httpclient</groupId> <artifactId>commons-httpclient</artifactId> <version>3.1</version> </dependency> import org.apache.commons.httpclient.HttpClient; HttpClient httpClient = new HttpClient(); import org.apache.commons.httpclient.HttpMethod; import org.apache.commons.httpclient.methods.GetMethod; String url = "https://api.example.com/data"; HttpMethod httpMethod = new GetMethod(url); import org.apache.commons.httpclient.NameValuePair; import org.apache.commons.httpclient.methods.PostMethod; String url = "https://api.example.com/data"; HttpMethod httpMethod = new PostMethod(url); NameValuePair param1 = new NameValuePair("param1", "value1"); NameValuePair param2 = new NameValuePair("param2", "value2"); httpMethod.setQueryString(new NameValuePair[]{param1, param2}); int statusCode = httpClient.executeMethod(httpMethod); String response = httpMethod.getResponseBodyAsString(); import org.json.JSONObject; JSONObject jsonResponse = new JSONObject(response); String keyInfo = jsonResponse.getString("key");