Http请求工具类

来源：互联网发布：ubuntu net tools 编辑：程序博客网时间：2024/05/18 20:50
package com.xx.gmap.util;/** * Created by zhangmy on 2017/6/16. */import com.wdletu.gmap.dto.TipDTO;import net.sf.json.JSONArray;import net.sf.json.JSONObject;import java.io.*;import java.net.*;/** * Http请求工具类 */public class HttpRequestUtil {    final static boolean proxySet = false;//是否使用代理模式    final static String proxyHost = "127.0.0.1";//代理ip    final static int proxyPort = 8087;//代理端口    /**     * 编码     *     * @param source     * @return     */    public static String urlEncode(String source, String encode) {        String result = source;        try {            result = java.net.URLEncoder.encode(source, encode);        } catch (UnsupportedEncodingException e) {            e.printStackTrace();            return "0";        }        return result;    }    public static String urlEncodeUTF8(String source) {        String result = source;        try {            result = java.net.URLEncoder.encode(source, "utf-8");        } catch (UnsupportedEncodingException e) {            e.printStackTrace();            return "0";        }        return result;    }    /**     * 发起http请求获取返回结果     *     * @param req_url 请求地址     * @return     */    public static String httpRequest(String req_url) {        StringBuffer buffer = new StringBuffer();        try {            URL url = new URL(req_url);            HttpURLConnection httpUrlConn = (HttpURLConnection) url.openConnection();            httpUrlConn.setDoOutput(false);            httpUrlConn.setDoInput(true);            httpUrlConn.setUseCaches(false);            httpUrlConn.setRequestMethod("GET");            httpUrlConn.connect();            // 将返回的输入流转换成字符串            InputStream inputStream = httpUrlConn.getInputStream();            InputStreamReader inputStreamReader = new InputStreamReader(inputStream, "utf-8");            BufferedReader bufferedReader = new BufferedReader(inputStreamReader);            String str = null;            while ((str = bufferedReader.readLine()) != null) {                buffer.append(str);            }            bufferedReader.close();            inputStreamReader.close();            // 释放资源            inputStream.close();            inputStream = null;            httpUrlConn.disconnect();        } catch (Exception e) {            System.out.println(e.getStackTrace());        }        return buffer.toString();    }    /**     * 发送http请求取得返回的输入流     *     * @param requestUrl 请求地址     * @return InputStream     */    public static InputStream httpRequestIO(String requestUrl) {        InputStream inputStream = null;        try {            URL url = new URL(requestUrl);            HttpURLConnection httpUrlConn = (HttpURLConnection) url.openConnection();            httpUrlConn.setDoInput(true);            httpUrlConn.setRequestMethod("GET");            httpUrlConn.connect();            // 获得返回的输入流            inputStream = httpUrlConn.getInputStream();        } catch (Exception e) {            e.printStackTrace();        }        return inputStream;    }    /**     * 向指定URL发送GET方法的请求     *     * @param url   发送请求的URL     * @param param 请求参数，请求参数应该是 name1=value1&name2=value2 的形式。     * @return URL 所代表远程资源的响应结果     */    public static String sendGet(String url, String param, int count) {        String result = "";        BufferedReader in = null;        final int maxCount = 5;        try {            String urlNameString = url + "?" + param;            URL realUrl = new URL(urlNameString);            // 打开和URL之间的连接            URLConnection connection = realUrl.openConnection();            // 设置通用的请求属性            connection.setRequestProperty("accept", "*/*");            connection.setRequestProperty("connection", "Keep-Alive");            connection.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");            // 建立实际的连接            connection.connect();            /*// 获取所有响应头字段            Map<String, List<String>> map = connection.getHeaderFields();            */            // 定义 BufferedReader输入流来读取URL的响应            in = new BufferedReader(new InputStreamReader(                    connection.getInputStream()));            String line;            while ((line = in.readLine()) != null) {                result += line;            }        } catch (Exception e) {            System.out.println("发送GET请求出现异常！" + e);            e.printStackTrace();            count++;            if (count <= maxCount) {                sendGet(url, param, count);            }        } finally {            try {                if (in != null) {                    in.close();                }            } catch (Exception e2) {                e2.printStackTrace();            }        }        return result;    }    /**     * 向指定 URL 发送POST方法的请求     *     * @param url     发送请求的 URL     * @param param   请求参数，请求参数应该是 name1=value1&name2=value2 的形式。     * @param isProxy 是否使用代理模式     * @return 所代表远程资源的响应结果     */    public static String sendPost(String url, String param, boolean isProxy) {        OutputStreamWriter out = null;        BufferedReader in = null;        String result = "";        try {            URL realUrl = new URL(url);            HttpURLConnection conn = null;            if (isProxy) {//使用代理模式                @SuppressWarnings("static-access")                Proxy proxy = new Proxy(Proxy.Type.DIRECT.HTTP, new InetSocketAddress(proxyHost, proxyPort));                conn = (HttpURLConnection) realUrl.openConnection(proxy);            } else {                conn = (HttpURLConnection) realUrl.openConnection();            }            // 打开和URL之间的连接            // 发送POST请求必须设置如下两行            conn.setDoOutput(true);            conn.setDoInput(true);            conn.setRequestMethod("POST");    // POST方法            // 设置通用的请求属性            conn.setRequestProperty("accept", "*/*");            conn.setRequestProperty("connection", "Keep-Alive");            conn.setRequestProperty("user-agent",                    "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");            conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");            conn.connect();            // 获取URLConnection对象对应的输出流            out = new OutputStreamWriter(conn.getOutputStream(), "UTF-8");            // 发送请求参数            out.write(param);            // flush输出流的缓冲            out.flush();            // 定义BufferedReader输入流来读取URL的响应            in = new BufferedReader(                    new InputStreamReader(conn.getInputStream()));            String line;            while ((line = in.readLine()) != null) {                result += line;            }        } catch (Exception e) {            System.out.println("发送 POST 请求出现异常！" + e);            e.printStackTrace();        }        //使用finally块来关闭输出流、输入流        finally {            try {                if (out != null) {                    out.close();                }                if (in != null) {                    in.close();                }            } catch (IOException ex) {                ex.printStackTrace();            }        }        return result;    }    public static void main(String[] args) {        String actionUrl = "http://restapi.amap.com/v3/assistant/inputtips?parameters".replace("?parameters", "");        //String params = "key=" + "e4fa66f17e614fa255e8a87348847da1" + "&keywords=" + "北京" + "&city=null" + "&datatype=" + "poi" + "&citylimit=true";        String params = "key=e4fa66f17e614fa255e8a87348847da1&keywords=商都路&city=null&datatype=poi&citylimit=false";        String sr = HttpRequestUtil.sendGet(actionUrl, params, 0);        JSONObject obj = JSONObject.fromObject(sr);        //JSONObject obj = new JSONObject(sr.toString());        JSONArray obj2 = obj.getJSONArray("tips");        for (int i = 0; i < obj2.size(); i++) {            JSONObject temp = obj2.getJSONObject(i);            String id = temp.getString("id");            String name = temp.getString("name");            String district = temp.getString("district");            String adcode = temp.getString("adcode");            String location = temp.getString("location");            String address = temp.getString("address").replace("[]", "");            String typecode = temp.getString("typecode");            TipDTO tipDTO = new TipDTO(id, name, district, adcode, location, address, typecode);            System.out.println(tipDTO);            /*System.out.println(JsonUtils.toObject(temp.toString(), TipDTO.class));*/        }        /*System.out.println(JsonUtils.toObject(sr, TipsResultDTO.class));*/    }}
阅读全文
0 0