package com.whyc.util;
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import java.io.*;
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import java.net.HttpURLConnection;
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import java.net.URL;
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import java.net.URLConnection;
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import java.net.URLEncoder;
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import java.nio.charset.StandardCharsets;
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import java.util.List;
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import java.util.Map;
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/**
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*
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*/
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public class HttpUtil {
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public static final String VIDEO_URL = "https://open.ys7.com/api/lapp/token/get";
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public static final String VIDEO_REQUEST_BODY = "appKey=07457eaa64a546a2bb016635fe1e744d&appSecret=8438b941b7e129e2ba0689759326ad56";
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public static String sendGet(String url, String param) {
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String result = "";
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BufferedReader in = null;
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try {
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String urlNameString = url + "?" + param;
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URL realUrl = new URL(urlNameString);
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// 打开和URL之间的连接
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URLConnection connection = realUrl.openConnection();
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// 设置通用的请求属性
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connection.setRequestProperty("accept", "*/*");
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connection.setRequestProperty("connection", "Keep-Alive");
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connection.setRequestProperty("user-agent",
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"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
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// 建立实际的连接
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connection.connect();
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// 获取所有响应头字段
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Map<String, List<String>> map = connection.getHeaderFields();
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// 遍历所有的响应头字段
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/*for (String key : map.keySet()) {
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System.out.println(key + "--->" + map.get(key));
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}*/
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// 定义 BufferedReader输入流来读取URL的响应
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in = new BufferedReader(new InputStreamReader(
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connection.getInputStream()));
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String line;
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while ((line = in.readLine()) != null) {
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result += line;
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}
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} catch (Exception e) {
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System.out.println("发送GET请求出现异常！" + e);
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e.printStackTrace();
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}
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// 使用finally块来关闭输入流
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finally {
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try {
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if (in != null) {
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in.close();
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}
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} catch (Exception e2) {
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e2.printStackTrace();
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}
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}
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return result;
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}
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/**
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* get方式的http请求
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*
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* @param httpUrl 请求地址
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* @return 返回结果
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*/
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public static String doGet(String httpUrl, String queryParams) {
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HttpURLConnection connection = null;
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InputStream inputStream = null;
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BufferedReader bufferedReader = null;
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String result = null;// 返回结果字符串
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try {
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// 创建远程url连接对象
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URL url = new URL(new StringBuffer(httpUrl).append("?").append(queryParams).toString());
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// 通过远程url连接对象打开一个连接，强转成httpURLConnection类
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connection = (HttpURLConnection) url.openConnection();
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// 设置连接方式：get
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connection.setRequestMethod("GET");
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// 设置连接主机服务器的超时时间：15000毫秒
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connection.setConnectTimeout(5000);
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// 设置读取远程返回的数据时间：60000毫秒
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connection.setReadTimeout(6000);
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// 发送请求
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connection.connect();
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// 通过connection连接，获取输入流
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if (connection.getResponseCode() == 200) {
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inputStream = connection.getInputStream();
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// 封装输入流，并指定字符集
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bufferedReader = new BufferedReader(new InputStreamReader(inputStream, StandardCharsets.UTF_8));
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// 存放数据
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StringBuilder sbf = new StringBuilder();
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String temp;
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while ((temp = bufferedReader.readLine()) != null) {
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sbf.append(temp);
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sbf.append(System.getProperty("line.separator"));
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}
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result = sbf.toString();
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}
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} catch (IOException e) {
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e.printStackTrace();
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} finally {
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// 关闭资源
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if (null != bufferedReader) {
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try {
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bufferedReader.close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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if (null != inputStream) {
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try {
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inputStream.close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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if (connection != null) {
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connection.disconnect();// 关闭远程连接
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}
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}
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return result;
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}
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/**
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* post方式的http请求
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*
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* @param httpUrl 请求地址
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* @return 返回结果
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*/
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public static String doPost(String httpUrl,String requestBody) {
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HttpURLConnection connection = null;
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InputStream inputStream = null;
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BufferedReader bufferedReader = null;
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String result = null;// 返回结果字符串
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try {
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// 创建远程url连接对象
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URL url = new URL(new StringBuffer(httpUrl).toString());
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// 通过远程url连接对象打开一个连接，强转成httpURLConnection类
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connection = (HttpURLConnection) url.openConnection();
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// 设置连接方式：post
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connection.setRequestMethod("POST");
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// 设置连接主机服务器的超时时间：15000毫秒
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connection.setConnectTimeout(5000);
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// 设置读取远程返回的数据时间：60000毫秒
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connection.setReadTimeout(6000);
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//请求体
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connection.setDoOutput(true);
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OutputStream outputStream = connection.getOutputStream();
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OutputStreamWriter osw = new OutputStreamWriter(outputStream,"UTF-8");
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osw.write(requestBody);
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osw.flush();
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outputStream.close();
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// 发送请求
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connection.connect();
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// 通过connection连接，获取输入流
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if (connection.getResponseCode() == 200) {
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inputStream = connection.getInputStream();
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// 封装输入流，并指定字符集
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bufferedReader = new BufferedReader(new InputStreamReader(inputStream, StandardCharsets.UTF_8));
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// 存放数据
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StringBuilder sbf = new StringBuilder();
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String temp;
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while ((temp = bufferedReader.readLine()) != null) {
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sbf.append(temp);
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sbf.append(System.getProperty("line.separator"));
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}
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result = sbf.toString();
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}
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} catch (IOException e) {
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e.printStackTrace();
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} finally {
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// 关闭资源
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if (null != bufferedReader) {
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try {
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bufferedReader.close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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if (null != inputStream) {
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try {
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inputStream.close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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if (connection != null) {
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connection.disconnect();// 关闭远程连接
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}
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}
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return result;
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}
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/**
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* 将map型转为请求参数型
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*
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* @param data
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* @return
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*/
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public static String urlencode(Map<String, ?> data) {
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StringBuilder sb = new StringBuilder();
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for (Map.Entry<String, ?> i : data.entrySet()) {
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try {
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sb.append(i.getKey()).append("=").append(URLEncoder.encode(i.getValue() + "", "UTF-8")).append("&");
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} catch (UnsupportedEncodingException e) {
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e.printStackTrace();
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}
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}
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String result = sb.toString();
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result = result.substring(0, result.lastIndexOf("&"));
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return result;
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}
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}
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