从URL解析JSON

1. 首先，您需要下载URL（作为文本）：

        private static String readUrl(String urlString) throws Exception {        BufferedReader reader = null;        try { URL url = new URL(urlString); reader = new BufferedReader(new InputStreamReader(url.openStream())); StringBuffer buffer = new StringBuffer(); int read; char[] chars = new char[1024]; while ((read = reader.read(chars)) != -1)     buffer.append(chars, 0, read);  return buffer.toString();        } finally { if (reader != null)     reader.close();        }    }

1. 然后您需要解析它（这里有一些选项）。

   • GSON（完整示例）：

     static class Item { String title; String link; String description;        }        static class Page { String title; String link; String description; String language; List<Item> items;        }        public static void main(String[] args) throws Exception { String json = readUrl("http://www.javascriptkit.com/" + "dhtmltutors/javascriptkit.json"); Gson gson = new Gson();         Page page = gson.fromJson(json, Page.class); System.out.println(page.title); for (Item item : page.items)     System.out.println("    " + item.title);        }

输出：

     javascriptkit.com document Text Resizer Javascript Reference- Keyboard/ Mouse Buttons Events Dynamically loading an external Javascript or CSS file

* **试试[ json.org上](http://json.org/java)的Java API ：**

     try { JSonObject json = new JSonObject(readUrl("...")); String title = (String) json.get("title"); ...        } catch (JSonException e) { e.printStackTrace();        }