package com.iailab.module.data.common.utils;
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import org.apache.http.HttpEntity;
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import org.apache.http.HttpResponse;
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import org.apache.http.client.methods.HttpPost;
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import org.apache.http.entity.StringEntity;
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import org.apache.http.util.EntityUtils;
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import org.springframework.util.CollectionUtils;
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import java.io.BufferedReader;
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import java.io.IOException;
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import java.io.InputStreamReader;
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import java.io.PrintWriter;
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import java.net.URL;
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import java.net.URLConnection;
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import java.util.List;
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import java.util.Map;
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/**
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* @author PanZhibao
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* @date 2021年06月03日 15:31
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*/
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public class HttpRequest {
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/**
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* 向指定URL发送GET方法的请求
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*
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* @param url 发送请求的URL
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* @param param 请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
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* @return URL 所代表远程资源的响应结果
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*/
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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", "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(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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public static String sendGet(String url, Map<String, String> params, String authorization) {
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String result = "";
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BufferedReader in = null;
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try {
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StringBuilder sb = new StringBuilder();
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sb.append(url);
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if (!CollectionUtils.isEmpty(params)) {
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sb.append("?");
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params.forEach((k, v) -> {
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sb.append(k + "=" + v + "&");
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});
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sb.append("t=" + System.currentTimeMillis());
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}
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String urlNameString = sb.toString();
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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("Authorization", authorization);
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connection.setRequestProperty("accept", "*/*");
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connection.setRequestProperty("connection", "Keep-Alive");
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connection.setRequestProperty("user-agent", "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(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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* 向指定 URL 发送POST方法的请求
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*
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* @param url
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* @param json
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* @return
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*/
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public static String sendPost(String url, String json) {
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PrintWriter out = null;
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BufferedReader in = null;
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String result = "";
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try {
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URL realUrl = new URL(url);
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// 打开和URL之间的连接
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URLConnection conn = realUrl.openConnection();
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// 设置通用的请求属性
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conn.setRequestProperty("content-type", "application/json");
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conn.setRequestProperty("accept", "*/*");
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conn.setRequestProperty("connection", "Keep-Alive");
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conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
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// 发送POST请求必须设置如下两行
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conn.setDoOutput(true);
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conn.setDoInput(true);
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// 获取URLConnection对象对应的输出流
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out = new PrintWriter(conn.getOutputStream());
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// 发送请求参数
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out.print(json);
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// flush输出流的缓冲
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out.flush();
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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(conn.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 POST 请求出现异常！" + e);
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e.printStackTrace();
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}
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//使用finally块来关闭输出流、输入流
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finally {
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try {
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if (out != null) {
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out.close();
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}
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if (in != null) {
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in.close();
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}
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} catch (IOException ex) {
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ex.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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* 向指定 URL 发送POST方法的请求
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*
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* @param url
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* @param json
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* @param authorization
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* @return
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*/
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public static String sendPost(String url, String json, String authorization) {
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PrintWriter out = null;
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BufferedReader in = null;
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String result = "";
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try {
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URL realUrl = new URL(url);
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// 打开和URL之间的连接
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URLConnection conn = realUrl.openConnection();
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// 设置通用的请求属性
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conn.setRequestProperty("Authorization", authorization);
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conn.setRequestProperty("accept", "*/*");
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conn.setRequestProperty("connection", "Keep-Alive");
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conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
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// 发送POST请求必须设置如下两行
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conn.setDoOutput(true);
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conn.setDoInput(true);
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// 获取URLConnection对象对应的输出流
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out = new PrintWriter(conn.getOutputStream());
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// 发送请求参数
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out.print(json);
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// flush输出流的缓冲
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out.flush();
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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(conn.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 POST 请求出现异常！" + e);
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e.printStackTrace();
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}
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//使用finally块来关闭输出流、输入流
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finally {
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try {
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if (out != null) {
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out.close();
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}
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if (in != null) {
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in.close();
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}
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} catch (IOException ex) {
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ex.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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*
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* @param url
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* @param json
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* @param charset
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* @param token
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* @return
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*/
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public static String doPost(String url, String json, String charset, String token) {
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org.apache.http.client.HttpClient httpClient = null;
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HttpPost httpPost = null;
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String result = null;
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try {
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httpClient = new SSLClient();
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httpPost = new HttpPost(url);
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//设置参数
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httpPost.addHeader("Accept", "application/json");
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httpPost.addHeader("Content-Type", "application/json;charset=UTF-8");
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httpPost.addHeader("token", token);
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StringEntity stringEntity = new StringEntity(json);
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stringEntity.setContentEncoding("UTF-8");
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stringEntity.setContentType("application/json");
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httpPost.setEntity(stringEntity);
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HttpResponse response = httpClient.execute(httpPost);
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if (response != null) {
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HttpEntity resEntity = response.getEntity();
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if (resEntity != null) {
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result = EntityUtils.toString(resEntity, charset);
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}
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}
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} catch (Exception ex) {
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ex.printStackTrace();
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}
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return result;
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}
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}
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