http请求

/**
 * Copyright 2015-2025 FLY的狐狸(email:jflyfox@sina.com qq:369191470).
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * 
 */

package com.hailian.util.extend;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.URL;
import java.net.URLConnection;
import java.util.List;
import java.util.Map;

import com.hailian.util.encrypt.AES;

import net.sf.json.JSONObject;

/**
 * TODO 这个有待完善
 * 
 * 2015年5月30日 下午11:16:22
 * flyfox 330627517@qq.com
 */
public class HttpClientUtils {

    /**
     * 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
     */
    public static String sendGet(String url, String param) {
        String result = "";
        BufferedReader in = null;
        try {
            String urlName = url + "?" + param;
            URL realUrl = new URL(urlName);
            // 打开和URL之间的连接
            URLConnection conn = realUrl.openConnection();
            // 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)");
            // 建立实际的连接
            conn.connect();
            // 获取所有响应头字段
            Map<String, List<String>> map = conn.getHeaderFields();
            // 遍历所有的响应头字段
            for (String key : map.keySet()) {
                System.out.println(key + "--->" + map.get(key));
            }
            System.out.println(conn.getContent());
            // 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 += "/n" + line;
            }
        } catch (Exception e) {
            System.out.println("发送GET请求出现异常!" + e);
            e.printStackTrace();
        }
        // 使用finally块来关闭输入流
        finally {
            try {
                if (in != null) {
                    in.close();
                }
            } catch (IOException ex) {
                ex.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。
     * @return URL所代表远程资源的响应
     */
    public static String sendPost(String url, String param) {
        PrintWriter out = null;
        BufferedReader in = null;
        String result = "";
        try {
            URL realUrl = new URL(url);
            // 打开和URL之间的连接
            URLConnection conn = realUrl.openConnection();
            // 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");
            // 发送POST请求必须设置如下两行
            conn.setDoOutput(true);
            conn.setDoInput(true);
            // 获取URLConnection对象对应的输出流
            out = new PrintWriter(conn.getOutputStream());
            // 发送请求参数
            out.print(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 += "/n" + 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[]) {
        //HttpClientUtils.sendPost("http://localhost:8400/api/addOrder","companyID=LX&randomCode=1111&timestamp=0000000000&data=pGzNOXrAd5XLDp8RjAEHt3DQXb%2BUs4SR4fVFnRCbaDZzN6AqmxFoQFlC6htjSRNcwt13dIYx786nHQ8eArL%2FB9QzGvekFyGb%2B6DESqF36jeBetormSk7xwvm0kRQECtFZA1n4DkeEY1eX8R43bhzGeWZTWWHgEbAWHFlVBDPS9wwj2sCLADSfh4wkNw1aP%2B4UD%2FkRQ67B1UZtzMKP3VDoahcThFhb6imAOCjx%2B%2FVyibKFOtF5vpt6%2BF3POh%2BH711VEM6%2F2hFVYUo%2FuGiZDNp%2BWf4pGq96mGo6HoBYk0ULieCBouR1vxBbirpbZ4D12AUSJAt7JKGHO0GLtdFPkJM1w%3D%3D");
        String key = "companyID=LX&randomCode=1111&timestamp=0000000000";
        //客户
        //String data = "e1q0TQBlonJivoZP34fSywtFLdPvyx972XJl%2Ff3gaAd7PPMYlsFg%2BqmnXJtFLf7garGUx0UVS7aIqyagIufbO0x1AedX1%2Bkt9ADhGJb9nEvsqkFUAYBsqodAFAnrdL6Rm3BpcbwG%2Basouol2qOgv15OVbQpbxdkUv4pcly%2B7s%2FeK%2Fent001MkD9UaQOkXsFdX10OA%2FzBf4piwAqJac4VZEm4y4K9S9B52uaocNlCPUcz4u2QmIEDot2srFejNY%2FOGYLwtEkYJnupNvRwg16Hx5xPBRM%2FYLLqtumkXuzLhgPqMBwVLBy9VOp%2B4UPJwW9epLxJ9W2tLc5N233n1%2BuMQbl9cH80F7yuMkmfa3XOJVCpbrwO6AvCfVbGEUt7187j8T%2FHNSp9OCGx%2FSn7ObiJ5w%3D%3D";
        //String result = HttpClientUtils.sendPost("http://192.168.1.152:8080/api/addCustomer", key + "&" + "data=" + data);

        //充值
        //String data = "%2Bg7zIa2OqjCjMkqRg2vKQxLQvvuITXUkdRq7r%2BixOw079C21pRS2UPl9HuE9%2FJRdhe%2F6WhT9vfljd8zhoGCv4KZ7XvHYBGPoATOyzjvqhpmT8WnQfh6O1%2Bj%2B6DoAjbHb";
        //String result = HttpClientUtils.sendPost("http://192.168.1.152:8080/api/paySave", key + "&" + "data=" + data);

        //扣款
        /*String data = "%2Bg7zIa2OqjCjMkqRg2vKQxLQvvuITXUkdRq7r%2BixOw079C21pRS2UPl9HuE9%2FJRdjKHmh4B%2BoXfpN9%2Bu6HoVlHOnY2ccgSPqre8x9q8w01Q1mrWIWgOkV5pkJTL9g29i";
        String result = HttpClientUtils.sendPost("http://192.168.1.152:8080/api/chargeSave", key + "&" + "data=" + data);*/

        String data = "p3f1M6pizje3iSBPW%2B%2BxnP1rBMfhelruuWmW1TnBSz6Bpo9dJVxkj%2BqmUzyfowBRjtOkwLhpKO390UUTa1o08D6N4nDUx401Dcp%2FQFlNACESoN%2BV8Rb%2BdEaT9DGX9p3m9XqyC6TxSyigfwsYRw%2FOsIOr4xgypWdGrR%2BncIIzZ%2F8%3D";
        String result = HttpClientUtils.sendPost("http://192.168.1.152:8080/api/addUser", key + "&" + "data=" + data);


        System.out.println(result);
    }
    /**
     * 同步到联信
     * @author dou_shuiahi
     * @date: 2019年2月13日上午10:32:58
     * @Description: url为请求url,data为请求的参数集合
     */
    public static String sendPost2Credit(String url,Map<String,String> data) {
        String key = "companyID=LX&randomCode=1111&timestamp=0000000000";
        JSONObject json = JSONObject.fromObject(data);
        String cSrc = json.toString();
        String cKey = "LX00000000001111";
        String enString = AES.encrypt(cSrc, cKey);
        String result = HttpClientUtils.sendPost(url, key + "&" + "data=" + enString);
        return result;
    }
}
原文地址:https://www.cnblogs.com/dsh2018/p/10442355.html