import java.io.ByteArrayOutputStream;import java.io.File;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;import java.net.HttpURLConnection;import java.net.URL;import java.net.URLEncoder;import java.text.SimpleDateFormat;import java.util.Date;import java.util.Map;public class HttpUtils {    /*     * 打开链接，确定连接；     * */    public static HttpURLConnection conn(String path,String method) throws IOException{                URL url = new URL(path);        HttpURLConnection con = (HttpURLConnection)url.openConnection();//打开连接                con.setRequestMethod(method);        con.setConnectTimeout(50000);        con.setDoOutput(true);        con.setDoInput(true);        con.setRequestProperty("apikey", "db3c2b8c6a66509b6ee353d2dc09eea1");        con.connect();        if(con.getResponseCode()==200){            return con;        }        return null;    }    /*     * get或post请求获取服务器图片     * */    public static File connImg(String path,String method) throws IOException{        File file = new File(""+new SimpleDateFormat("yyyyMMdd").format(new Date().getTime()));        File f = new File(file,""+new Date().getTime()+"."+path.substring(path.lastIndexOf(".")+1));        if(!file.exists()){            file.mkdirs();        }        if(conn(path,method) instanceof HttpURLConnection){            HttpURLConnection con = conn(path,method);            InputStream is = con.getInputStream();            FileOutputStream fos = new FileOutputStream(f);            byte[] b = new byte[1024];            int l = is.read(b);            while(l!=-1){                fos.write(b, 0, l);                l = is.read(b);            }            is.close();            fos.close();        }        return f;    }        /*     * get或post抓取服务器数据     * */    public static String connData(String path,String method) throws IOException{        String str=null;        if(conn(path,method) instanceof HttpURLConnection){            HttpURLConnection con = conn(path,method);                        InputStream is = con.getInputStream();            ByteArrayOutputStream baos = new ByteArrayOutputStream();            byte[] b = new byte[1024];            int l = is.read(b);            while(l!=-1){                baos.write(b, 0, l);                l = is.read(b);            }            str = new String(baos.toByteArray(),"UTF-8");        }        return str;    }            /*     * get或post提交数据并接受服务器的返回值     * */        public static String connRequest(String path,String method,Map
     
       para) throws IOException{        String s=null;        StringBuilder sb = new StringBuilder();        for(Map.Entry
      
        me:para.entrySet()){            sb.append(me.getKey()+"="+URLEncoder.encode(me.getValue(),"UTF-8")+"&");        }        sb.deleteCharAt(sb.length()-1);                path=path+"?"+sb;                if(conn(path,method) instanceof HttpURLConnection){            HttpURLConnection con = conn(path,method);            InputStream is = con.getInputStream();            byte[] b = new byte[1024];            ByteArrayOutputStream baos = new ByteArrayOutputStream();            int l = is.read(b);            while(l!=-1){                baos.write(b, 0, l);                l=is.read(b);            }            s = new String(baos.toByteArray(),"UTF-8");        }        return s;        }}