How to do HTTPPUT request using XML?

Question

I am learning rest API and I find it difficult to do the PUT request. Below is the code which I tried. But the record doesn't get updated successfully

The URL used - http://www.thomas-bayer.com/sqlrest/PRODUCT/1

Value trying to update - <PRICE>24.8</PRICE> to <PRICE>24.9</PRICE>

Language : Java

DefaultHttpClient httpClient = new DefaultHttpClient();
    HttpPut putrequest = new HttpPut(
            "http://www.thomas-bayer.com/sqlrest/PRODUCT/1");
    List<NameValuePair> nvps = new ArrayList<NameValuePair>() {{
        add(new BasicNameValuePair("content-type", "application/xml"));
        add(new BasicNameValuePair("Server", "Apache-Coyote/1.1"));

    }};
    for (NameValuePair h : nvps) {
        putrequest.addHeader(h.getName(), h.getValue());
    }
    String xml="<?xml version=\"1.0\"?><PRODUCT xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n" +
            "    <ID>1</ID>\n" +
            "    <NAME>Chair Shoe</NAME>\n" +
            "    <PRICE>24.9</PRICE>\n" +
            "</PRODUCT>";

    putrequest.setEntity(new StringEntity(xml));

    HttpResponse response = httpClient.execute(putrequest);

    if (response.getStatusLine().getStatusCode() != 201) {
        throw new RuntimeException("Failed : HTTP error code : "
                + response.getStatusLine().getStatusCode());
    }

    httpClient.getConnectionManager().shutdown();
}

I get the 500 response but I am able to add the record if the record is not there using HTTPPUT. How to fix this?

Answer 1

If it's getting added and still you are getting 500, then there are below possibilities:

1. Server encounter error after records getting added
2. server side code is wrongly put the STATUS code