问题
Possible Duplicate:
How to use Servlets and Ajax?
I am using the following code in Javascript to makes an Ajax call:
function getPersonDataFromServer() {
$.ajax({
type: "POST",
timeout: 30000,
url: "SearchPerson.aspx/PersonSearch",
data: "{ 'fNamn' : '" + stringData + "'}",
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function (msg) {
...
}
});
}
I would like to do this in Java as well. Basically, I would like to write a Java client application which send this data via Ajax calls to the server.
How do I do Ajax in Java?
回答1:
AJAX is no different from any other HTTP call. You can basically POST the same URL from Java and it shouldn't matter as far as the target server is concerned:
final URL url = new URL("http://localhost:8080/SearchPerson.aspx/PersonSearch");
final URLConnection urlConnection = url.openConnection();
urlConnection.setDoOutput(true);
urlConnection.setRequestProperty("Content-Type", "application/json; charset=utf-8");
urlConnection.connect();
final OutputStream outputStream = urlConnection.getOutputStream();
outputStream.write(("{\"fNamn\": \"" + stringData + "\"}").getBytes("UTF-8"));
outputStream.flush();
final InputStream inputStream = urlConnection.getInputStream();
The code above is more or less equivalent to your jQuery AJAX call. Of course you have to replace localhost:8080 with the actual server name.
If you need more comprehensive solution, consider httpclient library and jackson for JSON marshalling.
See also
- cURL and HttpURLConnection - Post JSON Data
来源：https://stackoverflow.com/questions/12768658/ajax-call-in-java-client-application