Get request analysis in the Android HTTP Client framework
Get request analysis in the Android HTTP Client framework
In Android applications, network requests are very common operations.Get requests are the most basic and commonly used network request methods.This article will introduce how to send and analyze GET requests in the HTTP Client framework in Android and provide related Java code examples.
1. Introduce the HTTP Client framework
First, we need to introduce the HTTP Client framework in the Android project.There are two options for the more popular HTTP Client frameworks on Android: HTTPClient and HTTPURLCONNECTION.This article takes HTTPURLCONNECTION as an example.
Add the following dependencies in the build.gradle file in your Android project:
groovy
implementation 'com.android.volley:volley:LATEST_VERSION'
2. Send GET request
The key to sending GET requests is to build a legal URL and use the HTTP Client framework to send requests to get data.The following is a method of sending a GET request of a sample:
private String sendGetRequest(String url) {
String result = null;
try {
URL requestUrl = new URL(url);
HttpURLConnection connection = (HttpURLConnection) requestUrl.openConnection();
// Set the request method to get
connection.setRequestMethod("GET");
// Set connection and reading timeout time
connection.setConnectTimeout(5000);
connection.setReadTimeout(5000);
// Initize the request
connection.connect();
// Analysis request results
if (connection.getResponseCode() == HttpURLConnection.HTTP_OK) {
InputStream inputStream = connection.getInputStream();
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream));
StringBuilder stringBuilder = new StringBuilder();
String line;
while ((line = bufferedReader.readLine()) != null) {
stringBuilder.append(line);
}
result = stringBuilder.toString();
bufferedReader.close();
inputStream.close();
}
connection.disconnect();
} catch (Exception e) {
e.printStackTrace();
}
return result;
}
In the above code, we first create a URL object, and then obtain the HTTPURLCONNECTION instance through the URL.OpenConnection () method.Then, we set the request method to get, and set the connection and read timeout.Finally, we initiate a request through the Connect () method to analyze it according to the request results.
3. Analyze GET request results
After sending the GET request, we analyze it based on the returned response results.The following is a method of analyzing the results of a sample: GET request results:
private void parseGetRequestResult(String result) {
try {
// Perform the parsing operation you need here
JSONObject jsonObject = new JSONObject(result);
String data = jsonObject.getString("data");
int code = jsonObject.getInt("code");
// ...
} catch (JSONException e) {
e.printStackTrace();
}
}
In the above code, we use the JSON library to analyze the results.You can choose the appropriate analysis method based on the actual situation, such as using DOM parsing XML.
Summarize
This article introduces the method of sending and parsing the GET request using the HTTP Client framework in Android.First of all, we introduced the HTTP Client framework and given an example of the introduction code.Then, we showed how to send Get requests and get the result of returning.Finally, we gave an example method to analyze the results of GET requests.I hope this article can help you understand the process of sending and analyzing GET requests in Android.
