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POGuava Input/Output Suppliers and URLConnection
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copied!<p>I am trying to refactor (to take advantage of Guava) some code that sends a POST request to a web service and reads the reply to a string.</p> <p>Currently my code looks like that:</p> <pre><code> HttpURLConnection conn = null; OutputStream out = null; try { // Build the POST data (a JSON object with the WS params) JSONObject wsArgs = new JSONObject(); wsArgs.put("param1", "value1"); wsArgs.put("param2", "value2"); String postData = wsArgs.toString(); // Setup a URL connection URL address = new URL(Constants.WS_URL); conn = (HttpURLConnection) address.openConnection(); conn.setRequestMethod("POST"); conn.setRequestProperty("Content-Type", "application/json"); conn.setUseCaches(false); conn.setDoOutput(true); conn.setConnectTimeout(Constants.DEFAULT_HTTP_TIMEOUT); // Send the request out = conn.getOutputStream(); out.write(postData.getBytes()); out.close(); // Get the response int responseCode = conn.getResponseCode(); if (responseCode != 200) { Log.e("", "Error - HTTP response code: " + responseCode); return Boolean.FALSE; } else { // Read conn.getInputStream() here } } catch (JSONException e) { Log.e("", "SendGcmId - Failed to build the WebService arguments", e); return Boolean.FALSE; } catch (IOException e) { Log.e("", "SendGcmId - Failed to call the WebService", e); return Boolean.FALSE; } finally { if (conn != null) conn.disconnect(); // Any guava equivalent here too? IOUtils.closeQuietly(out); } </code></pre> <p>I would like to understand how to use properly Guava's InputSupplier and OutputSupplier here to get rid of quite a bunch of code. There are quite a few examples out here with files but I can't get a nice concise version of the above code (would like to see what a Guava experienced user would do with that).</p>

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