import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.PrintStream; import java.io.UnsupportedEncodingException; import java.net.HttpURLConnection; import java.net.URL; import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.Date; import java.util.Map; import org.apache.log4j.Logger; public class RequestDoPostUtil { private static Logger log = Logger.getLogger(RequestDoPostUtil.class); public static String doPost(String url, Map<String, Object> parameters) throws Exception { // 编码请求参数 String params = paramsConvert(parameters); URL restURL = new URL(url); log.info("链接:"+url); log.info("参数:"+parameters.toString()); int t= 0;//调用接口出错次数 while(t<3) { try { /* * 此处的urlConnection对象实际上是根据URL的请求协议(此处是http)生成的URLConnection类 * 的子类HttpURLConnection */ HttpURLConnection conn = (HttpURLConnection) restURL.openConnection(); // conn.setConnectTimeout(5000); // conn.setReadTimeout(5000); // 请求方式 conn.setRequestMethod("POST"); // 设置是否从httpUrlConnection读入,默认情况下是true; httpUrlConnection.setDoInput(true); conn.setDoOutput(true); // allowUserInteraction 如果为 true,则在允许用户交互(例如弹出一个验证对话框)的上下文中对此 URL 进行检查。 conn.setAllowUserInteraction(false); PrintStream ps = new PrintStream(conn.getOutputStream()); ps.print(params); ps.close(); BufferedReader bReader = new BufferedReader(new InputStreamReader(conn.getInputStream(), "UTF-8")); String line, resultStr = ""; while (null != (line = bReader.readLine())) { resultStr += line; } System.out.println(resultStr); bReader.close(); return resultStr; } catch (Exception e) { t++; log.warn("=======>出错次数(requset error ):" + t); e.printStackTrace(); } } throw new Exception("网络异常,请稍后再试"); } /** * 参数类型转换 * * @param parameters * @return * @throws UnsupportedEncodingException */ public static String paramsConvert(Map<String, Object> parameters) throws UnsupportedEncodingException { StringBuffer sb = new StringBuffer();// 处理请求参数 // 编码请求参数 for (String name : parameters.keySet()) { Object object = parameters.get(name); log.info("类型:"+object.getClass()); if(object instanceof Integer) { sb.append(name).append("=").append(java.net.URLEncoder.encode((String)object, "UTF-8")) .append("&"); }else if(object instanceof Date) { Calendar cal = Calendar.getInstance(); cal.setTime((Date)object); SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); sb.append(name).append("=").append(java.net.URLEncoder.encode(sdf.format(cal.getTime()), "UTF-8")) .append("&"); }else{ if(object.getClass().isArray()) {//判断是否是字符串数组 String[] values = (String[])object; for(String va : values) { sb.append(name).append("=").append(java.net.URLEncoder.encode((String) va, "UTF-8")) .append("&"); } }else { sb.append(name).append("=").append(java.net.URLEncoder.encode((String) parameters.get(name), "UTF-8")) .append("&"); } } } return sb.toString().substring(0, sb.toString().length()-1); } public static void main(String[] args) { int s = 0; Object o = (Object)s; log.info(o.getClass()); Integer a = 0; log.info(a.getClass()); Date b = new Date(); log.info(b.getClass()); String c = ""; log.info(c.getClass()); String [] d = new String[2]; log.info(d.getClass()); } }
原文地址:https://www.cnblogs.com/lxk233/p/10476216.html
时间: 2024-10-07 18:24:33