调用百度搜索接口查询

 import java.net.*;
 import java.io.*;

 public class t {
     public t() {
     }

     public static void main(String[] args) {

         try {
             String key = "java"; //查询关键字
             key = URLEncoder.encode(key, "gb2312");
             URL u = new URL("http://www.baidu.com.cn/s?wd=" + key + "&cl=3");
             URLConnection conn = u.openConnection();
             BufferedReader reader = new BufferedReader(new InputStreamReader(
                     conn.getInputStream(), "gb2312"));
             String str = reader.readLine();
             while (str != null) {
                 System.out.println(str);
                 str = reader.readLine();
             }

             reader.close();
         } catch (Exception ex) {
             ex.printStackTrace();
         }

     }


 }