Question

我试图从网址获取json对象：

http://www.alfanous.org/jos2?action=search&unit=aya&fuzzy=True&query=حم

然而，当我使用该url运行我的代码时，我得到了一个空的json，当我从浏览器请求url时，josn被填充。

我的代码出了什么问题？

    URL url = new URL("http://www.alfanous.org/jos2?action=search&unit=aya&fuzzy=True&query=حم");
    URLConnection conn = url.openConnection();
    InputStream is = conn.getInputStream();
    Scanner scan = new Scanner(is);
    while (scan.hasNextLine()) {
        System.out.println(scan.nextLine());
    }

我也试过

    // Create URL object
    URL obj = new URL("http://www.alfanous.org/jos2?action=search&unit=aya&fuzzy=True&query=حم");

    // Communicate with the URL by HTTP
    HttpURLConnection con = (HttpURLConnection) obj.openConnection();

    // optional default is GET
    con.setRequestMethod("GET");

    // add request header
     con.setRequestProperty("User-Agent", "Mozilla/5.0");

    // Getting response data
    BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream()));
    String inputLine;
    StringBuffer response = new StringBuffer();
    while ((inputLine = in.readLine()) != null) {
        response.append(inputLine);
    }
    in.close();
    System.out.println(response.toString());

Answer 1

解决方案是在将url字符串传递给URL构造函数之前对其进行编码。

String urlstring = "http://www.alfanous.org/jos2?action=search&unit=aya&fuzzy=True&query=حم";
URLEncoder.encode(urlstring, "UTF-8");
URL url = new URL(urlstring);

然后继续使用原始帖子中显示的上一个代码。

URLConnection conn = url.openConnection();
InputStream is = conn.getInputStream();
Scanner scan = new Scanner(is);
while (scan.hasNextLine()) {
    System.out.println(scan.nextLine());
}

道德是......我应该在使用它之前对网址进行编码！

Answer 2

尝试使用BufferedReader，如下所示：

   URL url = new URL("http://www.alfanous.org/jos2?action=search&unit=aya&fuzzy=True&query=حم");
   URLConnection conn = url.openConnection(); 
   BufferedReader br =new BufferedReader(new InputStreamReader(conn.getInputStream()));
      while ((thisLine = br.readLine()) != null) {
        System.out.println(thisLine);
     }

JAVA：在代码中清空JSON，在浏览器中填充JSON

2 个答案: