使用java代码模拟HTTP请求

使用java模拟HTTP请求

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package hk.sohan.web.controller;

import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;

import hk.sohan.core.util.RSAUtils;
import hk.sohan.web.constant.AppConstants;
public class TestRequest {
/**
 * 接口调用 GET
 */
public static void httpURLConectionGET(String urls) {
try {
                URL url = new URL(urls);    // 把字符串转换为URL请求地址
                HttpURLConnection connection = (HttpURLConnection) url.openConnection();// 打开连接
                connection.connect();// 连接会话
// 获取输入流
                BufferedReader br = new BufferedReader(new InputStreamReader(connection.getInputStream()));
                String line;
                StringBuilder sb = new StringBuilder();
while ((line = br.readLine()) != null) {// 循环读取流
                    sb.append(line);
                }
                br.close();// 关闭流
                connection.disconnect();// 断开连接
                System.out.println(sb.toString());
            } catch (Exception e) {
                e.printStackTrace();
                System.out.println("失败!");
            }
        }

/**
 * 接口调用 POST
 */
public static void httpURLConnectionPOST (String urls) {
try {
                URL url = new URL(urls);

// 将url 以 open方法返回的urlConnection 连接强转为HttpURLConnection连接 (标识一个url所引用的远程对象连接)
                HttpURLConnection connection = (HttpURLConnection) url.openConnection();// 此时cnnection只是为一个连接对象,待连接中

// 设置连接输出流为true,默认false (post 请求是以流的方式隐式的传递参数)
                connection.setDoOutput(true);

// 设置连接输入流为true
                connection.setDoInput(true);

// 设置请求方式为post
                connection.setRequestMethod("POST");

// post请求缓存设为false
                connection.setUseCaches(false);

// 设置该HttpURLConnection实例是否自动执行重定向
                connection.setInstanceFollowRedirects(true);

// 设置请求头里面的各个属性 (以下为设置内容的类型,设置为经过urlEncoded编码过的from参数)
// application/x-javascript text/xml->xml数据 application/x-javascript->json对象 application/x-www-form-urlencoded->表单数据
                connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");

// 建立连接 (请求未开始,直到connection.getInputStream()方法调用时才发起,以上各个参数设置需在此方法之前进行)
                connection.connect();

// 创建输入输出流,用于往连接里面输出携带的参数,(输出内容为?后面的内容)
                DataOutputStream dataout = new DataOutputStream(connection.getOutputStream());
                String parm = "storeId=" + URLEncoder.encode("32", "utf-8"); //URLEncoder.encode()方法 为字符串进行编码

// 将参数输出到连接
                dataout.writeBytes(parm);

// 输出完成后刷新并关闭流
                dataout.flush();
                dataout.close(); // 重要且易忽略步骤 (关闭流,切记!) 

                System.out.println(connection.getResponseCode());

// 连接发起请求,处理服务器响应 (从连接获取到输入流并包装为bufferedReader)
                BufferedReader bf = new BufferedReader(new InputStreamReader(connection.getInputStream())); 
                String line;
                StringBuilder sb = new StringBuilder(); // 用来存储响应数据

// 循环读取流,若不到结尾处
while ((line = bf.readLine()) != null) {
                    sb.append(bf.readLine());
                }
                bf.close();    // 重要且易忽略步骤 (关闭流,切记!) 
                connection.disconnect(); // 销毁连接
                System.out.println(sb.toString());

            } catch (Exception e) {
                e.printStackTrace();
            }
        }

public static void main(String[] args) {
//待签名的参数
            String param = "biz_paras={\"tmallOrderId\":\"HJKL\",\"iccid\":\"78NM\"}&format=json&method=method_name&seller_id=12345678&sign_method=RSA&timestamp=20150309135203528&v=1.0&app_key=tmall&operator_id=alicom&access_token=999888";
            String sign = null;
try {
                sign = RSAUtils.signByPrivateKey(AppConstants.RSAPRIVATE_KEY.getBytes("utf-8"), param.getBytes("utf-8"));
                System.out.println("第一次使用私钥加签=="+sign);
                System.out.println(RSAUtils.verifyByPublicKey(AppConstants.RSAPublicKey.getBytes(), param.getBytes(), sign.getBytes()));
            } catch (UnsupportedEncodingException e) {
// TODO Auto-generated catch block
                e.printStackTrace();
            }

            httpURLConectionGET("http://192.168.0.84:8080/tmallwt/tmall/checkOrderSim?sign=bI6ypR13qSwhrDvIPIPFxZScrej6xT48fm5hCyD9yf29iMSoup7VBgN2BSaaVmWRv3uz7FNdZyM3qLCkMuN9yby4RI4BlWMKK2g2fBZ9TlvySS+2KV+At9S3BKVGMTTiRlusEMS5GmaL06ckJDwsUU5x2ZGGqblMOgykwpr251U=&biz_paras={\"tmallOrderId\":\"HJKL\",\"iccid\":\"78NM\"}&format=json&method=method_name&seller_id=12345678&sign_method=RSA&timestamp=20150309135203528&v=1.0&app_key=tmall&operator_id=alicom&access_token=999888");
        }
    }

/**
 * http://192.168.0.84:8080/tmallwt/tmall/checkOrderSim?biz_paras={'tmallOrderId':HJKL,'iccid':78NM
 * 
 * http://192.168.0.84:8080/tmallwt/tmall/checkOrderSim?sign=5364C12B837RE89D256DB2A301A3E&timestamp=20150309135203528&v=1.0&sell_id=12345678&method=method_name&format=json&biz_paras={"billId":"13800000000","queryType":"1"}&sign_method= RSA&app_key=tmall&operator_id=alicom&access_token=999888
 * 
 * 
 */