Equivalent of .NET's WebClient and HttpWebRequest in Java?

问题

.NET has the HttpWebRequest and WebClient classes for simulating a browser's requests.

I'd google it, but I'm not sure what keyword to use.

I want to write code that does does HTTP GETs and POSTs, along with cookies, in an applet or local .jar and gives me back the response in a text string or some other parseable structure.

回答1:

HttpURLConnection is Java's equivalent of HttpWebRequest.

URL iurl = new URL(url);
HttpURLConnection uc = (HttpURLConnection)iurl.openConnection();
uc.connect();
if (uc.getContentType().equalsIgnoreCase("image/jpeg"))
{
  result = true;
}

回答2:

Apache HTTPClient has equivalent functionality, though the APIs are not exactly the same. Oakland Software has a table comparing their commercial product with various alternatives, including the Apache product. Apache's own opinion of the built-in HttpUrlConnection (quoted from the above linked-to page) is:

The jdk has the HttpUrlConnection which is limited and in many ways flawed.

Here's a link to the HTTPClient tutorial.

回答3:

html unit for me. i can simulate javascript (to a certain extent)

回答4:

Verify Webclient in Apache Cx JaxRs Library.

Checkout this: https://cxf.apache.org/javadoc/latest/org/apache/cxf/jaxrs/client/WebClient.html

Sample code looks below:

WebClient client = WebClient.create(url);
client.path(ADD_PATH).path("/books/2").accept("text/plain");
s = client.get(String.class);
System.out.println(s);

来源：https://stackoverflow.com/questions/1137812/equivalent-of-nets-webclient-and-httpwebrequest-in-java