Databases
StackOverflow2013
Postsdbo
POApache httpclient returning page before it loads?
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POApache httpclient returning page before it loads?
    primarykey
    data
    text
    <p>I noticed a strange phenomenon when using the apache httpclient libraries and I want to know why it occurs. I created some sample code to demonstrate. Consider the following code:</p> <pre><code>//Example URL String url = "http://rads.stackoverflow.com/amzn/click/05961580"; GetMethod get = new GetMethod(url); HttpMethodRetryHandler httpHandler = new DefaultHttpMethodRetryHandler(1, false); get.getParams().setParameter(HttpMethodParams.RETRY_HANDLER, httpHandler ); get.getParams().setCookiePolicy(CookiePolicy.IGNORE_COOKIES); HttpConnectionManager connectionManager = new SimpleHttpConnectionManager(); HttpClient client = new HttpClient( connectionManager ); client.getParams().setParameter("http.useragent", FIREFOX ); String line; StringBuilder stringBuilder = new StringBuilder(); String toStreamBody = null; String toStringBody = null; try { int statusCode = client.executeMethod(get); if( statusCode != HttpStatus.SC_OK ){ System.err.println("Internet Status: " + HttpStatus.getStatusText(statusCode) ); System.err.println("While getting page: " + url ); } //toString toStringBody = get.getResponseBodyAsString(); //toStream InputStreamReader isr = new InputStreamReader(get.getResponseBodyAsStream()) BufferedReader rd = new BufferedReader(isr); while ((line = rd.readLine()) != null) { stringBuilder.append(line); } } catch (java.io.IOException ex) { System.out.println( "Failed to get page: " + url); } finally { get.releaseConnection(); } toStreamBody = stringBuilder.toString(); </code></pre> <p>This code prints nothing:</p> <pre><code> System.out.println(toStringBody); // "" </code></pre> <p>This code prints the web page:</p> <pre><code> System.out.println(toStreamBody); // "Whole Page" </code></pre> <p>But it gets even stranger... Replace:</p> <pre><code>get.getResponseBodyAsString(); </code></pre> <p>With:</p> <pre><code> get.getResponseBodyAsString(150000); </code></pre> <p>Now we get the error: Failed to get page: <code>http://www.amazon.com/gp/offer-listing/0596158068/ref=dp_olp_used?ie=UTF8</code></p> <p>I was unable to find another website besides for amazon that replicates this behavior but I assume there are others. </p> <p>I am aware that according to the documentation at <code>http://hc.apache.org/httpclient-3.x/performance.html</code> discourages the use of <code>getResponseBodyAsString()</code>, it does not say that the page will not load, only that you may be at risk of an out of memory exception. Is it possible that <code>getResponseBodyAsString()</code> is returning the page before it loads? Why does this only happen with amazon?</p>
    singulars
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PTQuestion
    1. USJigar Joshi
    1. USBob
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POApache httpclient returning page before it loads?
      1. This table or related slice is empty.
      1. VTUpMod
    1. This table or related slice is empty.
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload