用户端接收解析JSON数据

最新推荐文章于 2022-11-23 23:30:59 发布

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最新推荐文章于 2022-11-23 23:30:59 发布

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分类专栏： java 文章标签： json 数据 java

本文链接：https://blog.youkuaiyun.com/qq_32497361/article/details/78559075

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//从接口获取json格式数据
public class jsonUtil{
protected static String getJsonString(String urlPath) throws Exception {
   URL url = new URL(urlPath);
   HttpURLConnection connection = (HttpURLConnection) url.openConnection();
   connection.connect();
   InputStream inputStream = connection.getInputStream();
   //对应的字符编码转换
   Reader reader = new InputStreamReader(inputStream, "UTF-8");
   BufferedReader bufferedReader = new BufferedReader(reader);
   String str = "";
   StringBuffer sb = new StringBuffer();
   while ((str = bufferedReader.readLine()) != null) {
      sb.append(str);
   }
   reader.close();
   connection.disconnect();
   return sb.toString();
}

public static void jsonToObj(String jsonStr) throws Exception {
   JSONArray jn = JSONArray.parseArray(jsonStr);
   if (jn.size() > 0) {
      for (int i = 0; i < jn.size(); i++) {
         JSONObject jo = (JSONObject) jn.get(i);
         System.out.println(jo.get("id"));
      }
   }
}
public static void main(String[] args) throws Exception {
   String json = jsonUtil.getJsonString("url");
   jsonUtil.jsonToObj(json);
}
}