我是JSON和REST的新手。我与返回一个字符串像这样的一台服务器的工作:REST和JSON - 将字符串转换为JSON数组
[{"username":"Hello","email":"[email protected]","credits":"100","twitter_username":""},{"username":"Goodbye","email":"[email protected]","credits":"0","twitter_username":""}]
我已经成功地打印出来作为在控制台上琴弦,但现在我想将它们转换成JSON阵列。我到目前为止的代码没有返回任何错误,但我不知道要为新的JSON数组添加构造函数。我一直在提及一位同事发送给我的一段代码,其中构造函数是新的JSONArray(响应),但他从未告诉我“响应”是什么。
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import net.sf.json.JSONArray;
import net.sf.json.JSONObject;
import sun.misc.BASE64Encoder;
public class NetClientGet {
public static void main(String[] args) {
try {
URL url = new URL("http://username:[email protected]/index.php/api/users/get_users/");
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("GET");
BASE64Encoder enc = new sun.misc.BASE64Encoder();
String userpassword = "username:password";
String encoded = enc.encode(userpassword.getBytes());
conn.setRequestProperty("Authorization", "Basic " + encoded);
if (conn.getResponseCode() != 200) {
throw new RuntimeException("Failed : HTTP error code : "
+ conn.getResponseCode());
}
BufferedReader br = new BufferedReader(new InputStreamReader(
(conn.getInputStream())));
String output;
System.out.println("Output from Server .... \n");
while ((output = br.readLine()) != null) {
System.out.println(output);
}
JSONArray array = new JSONArray(output);
for (int i =0; i < array.size(); i++) {
JSONObject row = array.getJSONObject(i);
String user = row.getString("username");
System.out.println(user);
}
conn.disconnect();
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}
谢谢!像魅力一样工作 – Tiffany 2012-07-16 13:49:43
我确实有一个问题 - 有没有办法让json字符串不必像这样硬编码? – Tiffany 2012-07-16 13:55:48
尝试在我给出的代码示例中的getJson函数作为答案,在下面的帖子中:http://stackoverflow.com/questions/11471884/need-help-android-json-currency-converter/11472677#11472677。使用它,您可以从外部服务器下载json数据 – sunil 2012-07-16 16:21:14