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This article mainly introduces "how to set Fiddler to intercept HTTP requests sent by Java code". In daily operation, I believe many people have doubts about how to set Fiddler to intercept HTTP requests sent by Java code. Xiaobian consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful to answer the questions of "how to set Fiddler to intercept HTTP requests sent by Java code". Next, please follow the editor to study!

When we use Java's RestTemplate or Apache's HTTPClient to program, we often encounter the need to track Java

Details of the HTTP request sent by the code. Just as javascript code sends requests in browsers can be easily tracked by Chrome developer tools, we can also use the tool Fiddler to monitor web requests sent by Java code.

Open Fiddler and find the port number 8888 for Fiddler listening in the connections panel:

If the HTTPClient of Apache is used to send the network request, the code is as follows:

Use HttpHost to set up the request proxy:

Private static void downloadCommerce () {HttpHost proxy = new HttpHost ("localhost", 8888, "http"); RequestConfig config = RequestConfig.custom (). SetProxy (proxy). Build (); CloseableHttpClient client= HttpClientBuilder.create (). SetDefaultRequestConfig (config). Build (); String url = "https://jerrywang.com:9002/rest/v2/electronics/users/jerry.wang@sap.com"; String token =" test "; HttpGet get = new HttpGet (url) Get.setHeader ("Authorization", "Bearer" + token); try {HttpResponse response = client.execute (get); HttpEntity entity = response.getEntity (); String result = EntityUtils.toString (entity, "UTF-8"); System.out.println ("url:" + result) } catch (Exception e) {e.printStackTrace ();}}

Execute the Java application, and then go to Fiddler to see various details of the monitored HTTP requests, such as the authentication token test of OAuth 2 hard-coded in the Java code:

The error message received by the Java code from the server:

This error message can of course be seen in Fiddler:

In this scenario, Fiddler plays a role similar to Chrome developer tools.

At this point, the study on "how to set Fiddler to intercept HTTP requests sent by Java code" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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