http json reader

util/HttpJSONReader.java

@@ -0,0 +1,89 @@
+package org.json.util;
+
+/************************************************************************************************
+ * *
+ * This class contains static methods for reading and parsing http json response *
+ * *
+ * *
+ * *
+ * Copyright Gamal Shaban 2012. *
+ * gemy21ce@gmail.com *
+ * *
+ * *
+ * *
+ * *
+ ************************************************************************************************/
+
+import java.io.*;
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.nio.charset.Charset;
+import org.json.JSONException;
+import org.json.JSONObject;
+
+/**
+ * This provides reading json from http response,parse it into json object.
+ *
+ * @author Gamal Shaban
+ */
+public final class HttpJSONReader {
+
+ /**
+ * read from the Reader object.
+ *
+ * @param rd
+ * @return
+ * @throws IOException
+ */
+ protected static String readAll(Reader rd) throws IOException {
+ StringBuilder sb = new StringBuilder();
+ int cp;
+ while ((cp = rd.read()) != -1) {
+ sb.append((char) cp);
+ }
+ return sb.toString();
+ }
+
+ /**
+ * read the url and passes the response as String.
+ *
+ * @param url
+ * @return
+ */
+ public static String readOnly(String url) throws MalformedURLException, IOException {
+
+ InputStream is = new URL(url).openStream();
+ //surround the statments with try and finally so make sure that inputstream will be closed.
+ try {
+ BufferedReader rd = new BufferedReader(new InputStreamReader(is, Charset.forName("UTF-8")));
+ String jsonText = readAll(rd);
+ return jsonText;
+ } finally {
+ is.close();
+ }
+
+
+ }
+
+ /**
+ * reads the url and passes the response as json object.
+ *
+ * @param url
+ * @return
+ */
+ public static JSONObject readAndParse(String url) throws JSONException, MalformedURLException, IOException {
+ //call the readOnly method and parse the json.
+ JSONObject json = new JSONObject(readOnly(url));
+ return json;
+ }
+
+ /**
+ * parse a json string and returns the json object representation.
+ *
+ * @param jsonString
+ * @return
+ */
+ public static JSONObject parse(String jsonString) throws JSONException {
+ return new JSONObject(jsonString);
+ }
+}