java - 为什么我在尝试打开 URL 时会收到 403 错误

Question

我目前正在使用来自 http://imdbapi.org 的 imdb api获取有关电影的一些信息。当我使用 API 并尝试打开这个 url在 Java 中它给了我一个 403 错误。该 url 应该以 JSON 格式返回数据。 到目前为止，这是我的代码(Java 7):

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URL;

public class Test {
    public static void main(String[] args) {
        URL url =null;
        try {
            url = new URL("http://imdbapi.org/?q=batman");
        } catch (MalformedURLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        InputStream is =null;
        try {
            is = url.openConnection().getInputStream();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        BufferedReader reader = new BufferedReader( new InputStreamReader( is )  );
        String line = null;
        try {
            while( ( line = reader.readLine() ) != null )  {
               System.out.println(line);
            }
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        try {
            reader.close();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        System.out.println(line);
    }
}

Answer 1

你应该设置User-Agent:

System.setProperty("http.agent", "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/28.0.1500.29 Safari/537.36"); 

或

URLConnection connection = url.openConnection();
connection.setRequestProperty("User-Agent", "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/28.0.1500.29 Safari/537.36");
is = connection.getInputStream();