package com.nuvole.poscom.util;
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import com.alibaba.fastjson.JSONObject;
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import java.io.BufferedReader;
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import java.io.DataOutputStream;
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import java.io.InputStreamReader;
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import java.net.HttpURLConnection;
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import java.net.URL;
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import java.text.SimpleDateFormat;
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import java.util.Calendar;
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import java.util.Date;
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import java.util.Iterator;
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import java.util.Map;
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/**
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* @Description 佳博云打印机请求类
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* @Author ZHAOXL
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* @Date 2024/3/6 16:26
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* @Version 1.0
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*/
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public class PoscomRequest {
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/**
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* Http Request POST Method
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*
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* @param urlStr 请求URL
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* @param params 请求参数
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* @return
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*/
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public static String sendPost(String urlStr, Map<String, String> params){
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String result = "";
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HttpURLConnection conn = null;
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String BOUNDARY = "----------------------------------------------";
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int retry = 0;
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while (retry < 3) {
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result = "";
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try {
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URL url = new URL(urlStr);
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conn = (HttpURLConnection) url.openConnection();
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conn.setConnectTimeout(5000);
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conn.setReadTimeout(30000);
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conn.setDoOutput(true);
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conn.setDoInput(true);
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conn.setUseCaches(false);
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conn.setRequestMethod("POST");
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conn.setRequestProperty("Connection", "Keep-Alive");
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conn.setRequestProperty("User-Agent",
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"Mozilla/5.0 (Windows; U; Windows NT 6.1; zh-CN; rv:1.9.2.6)");
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conn.setRequestProperty("Content-Type",
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"multipart/form-data; boundary=" + BOUNDARY);
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DataOutputStream out = new DataOutputStream(conn.getOutputStream());
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if (params != null) {
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StringBuffer strBuf = new StringBuffer();
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Iterator iter = params.entrySet().iterator();
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while (iter.hasNext()) {
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Map.Entry entry = (Map.Entry) iter.next();
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String inputName = (String) entry.getKey();
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String inputValue = (String) entry.getValue();
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if (inputValue == null) {
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continue;
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}
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strBuf.append("\r\n").append("--").append(BOUNDARY)
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.append("\r\n");
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strBuf.append("Content-Disposition: form-data; name=\""
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+ inputName + "\"\r\n\r\n");
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strBuf.append(inputValue);
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}
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out.write(strBuf.toString().getBytes("UTF-8"));
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}
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String endData = "\r\n--" + BOUNDARY + "--\r\n";
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out.write(endData.getBytes());
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out.flush();
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out.close();
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// 定义 BufferedReader输入流来读取URL的响应
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BufferedReader reader = new BufferedReader(new InputStreamReader(
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conn.getInputStream(),"UTF-8"));
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String line;
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while ((line = reader.readLine()) != null) {
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result += line;
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}
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reader.close();
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reader = null;
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JSONObject resultObject = JSONObject.parseObject(result);
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int code = (int) resultObject.get("code");
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if (code > 1) {
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throw new RuntimeException((String) resultObject.get("msg"));
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}
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break;
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} catch (Exception e) {
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retry++;
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System.out.println("=====请求异常 START=====\r\n" + urlStr + "\r\n=====请求异常 END=====");
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e.printStackTrace();
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} finally {
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if (conn != null) {
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conn.disconnect();
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conn = null;
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}
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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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* Http Request GET Method
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*
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* @param urlStr 请求URL
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* @param params 请求参数
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* @return
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*/
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public static String sendGet(String urlStr, Map<String, String> params) {
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String result = "", paramsString = "";
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HttpURLConnection conn = null;
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try {
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if (params != null) {
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Iterator iter = params.entrySet().iterator();
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while (iter.hasNext()) {
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Map.Entry entry = (Map.Entry) iter.next();
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String inputName = (String) entry.getKey();
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String inputValue = (String) entry.getValue();
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if (inputValue == null) {
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continue;
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}
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paramsString += inputName + "=" + inputValue + "&";
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}
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}
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URL url = new URL(urlStr + "?" + paramsString);
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conn = (HttpURLConnection) url.openConnection();
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conn.setConnectTimeout(5000);
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conn.setReadTimeout(30000);
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conn.setRequestProperty("Connection", "Keep-Alive");
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conn.setRequestProperty("User-Agent",
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"Mozilla/5.0 (Windows; U; Windows NT 6.1; zh-CN; rv:1.9.2.6)");
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// 建立实际的连接
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conn.connect();
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// 定义 BufferedReader输入流来读取URL的响应
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BufferedReader reader = new BufferedReader(new InputStreamReader(
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conn.getInputStream()));
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String line;
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while ((line = reader.readLine()) != null) {
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result += line;
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}
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reader.close();
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reader = null;
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} catch (Exception e) {
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System.out.println("=====请求异常 START=====\r\n" + urlStr + "\r\n=====请求异常 END=====");
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e.printStackTrace();
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} finally {
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if (conn != null) {
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conn.disconnect();
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conn = null;
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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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* 获取过去第几天的日期
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*
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* @param past 与当天差异天数
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* @return
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*/
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public static String getPastDate(int past) {
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Calendar calendar = Calendar.getInstance();
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calendar.set(Calendar.DAY_OF_YEAR, calendar.get(Calendar.DAY_OF_YEAR) - past);
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Date today = calendar.getTime();
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SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
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String result = format.format(today);
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return result;
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}
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}
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