②HttpURLConnection通过Json参数方式提交Post请求
之前的文章介绍过通过报文的方式HttpURLConnection提交post请求，今天介绍下通过Json参数的方法提交Post请求，先上代码
public static HttpResponse sendPost(String url, String param, Charset charset) { try { URL httpurl = new URL(url); HttpURLConnection httpConn = (HttpURLConnection) httpurl.openConnection(); httpConn.setRequestProperty("User-Agent", "Mozilla/4.0 (compatible; MSIE 8.0; " + "Windows NT 5.1; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)"); httpConn.setConnectTimeout(CONN_TIMEOUT); httpConn.setReadTimeout(READ_TIMEOUT); httpConn.setDoOutput(true); httpConn.setDoInput(true); httpConn.setUseCaches(false); httpConn.setRequestMethod("POST"); httpConn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded;charset=" + charset.name()); httpConn.connect(); OutputStream os = httpConn.getOutputStream(); PrintWriter out = new PrintWriter(os); out.print(param); out.flush(); out.close(); os.close(); HttpResponse response = new HttpResponse(); response.setResponseStatus(httpConn.getResponseCode()); response.setContentLength(httpConn.getContentLength()); response.setContentType(httpConn.getContentType()); response.setHeaderFields(httpConn.getHeaderFields()); if (response.getResponseStatus() != 200 && httpConn.getErrorStream() != null) { response.setErrorMessage(new String(IOUtils.readToByte(httpConn.getErrorStream()), charset)); return response; } response.setResponseContent(httpConn.getInputStream()); if (response.getContentType() == null || response.getContentType().startsWith("text")) { response.setContext(new String(IOUtils.readToByte(response.getResponseContent()), charset)); } return response; } catch (IOException e) { throw new RuntimeException(String.format("url:%s,param:%s,message:%s", url, param, e.getMessage()), e); } }
我们先测试下：
public static void main(String[] args) { HttpResponse resp = sendPost("http://www.cnblogs.com/shawWey/", "", Charset.forName("utf-8")); System.err.println(resp.getContext()); System.err.println(resp.getErrorMessage()); }
可以看到控制台输出
<!DOCTYPE html> <html lang="zh-cn"> <head> <meta charset="utf-8"/> <meta name="viewport" content="width=device-width, initial-scale=1" /> <meta name="referrer" content="origin" /> <title>shawWey - 博客园</title> <link type="text/css" rel="stylesheet" href="/bundles/blog-common.css?v=giTNza-Of-PEt5UsELhFQAR7G6-bfaSa4oolcq7i9-o1"/> <link id="MainCss" type="text/css" rel="stylesheet" href="/skins/darkgreentrip/bundle-darkgreentrip.css?v=EjExWsdi8Ql8RA7Wdq4_YaeuMVhIAL6d2BSGbilapWY1"/> <link id="mobile-style" media="only screen and (max-width: 767px)" type="text/css" rel="stylesheet" href="/skins/darkgreentrip/bundle-darkgreentrip-mobile.css?v=6NcJHqsIyaE4w19VtgFvCFahrnr2rYCTRRTdxlMDhhQ1"/> <link title="RSS" type="application/rss+xml" rel="alternate" href="https://www.cnblogs.com/shawWey/rss"/> <link title="RSD" type="application/rsd+xml" rel="EditURI" href="https://www.cnblogs.com/shawWey/rsd.xml"/> <link type="application/wlwmanifest+xml" rel="wlwmanifest" href="https://www.cnblogs.com/shawWey/wlwmanifest.xml"/> <script src="//common.cnblogs.com/scripts/jquery-2.2.0.min.js"></script> <script type="text/javascript">var currentBlogApp = 'shawWey', cb_enable_mathjax=false;var isLogined=false;</script> <script src="/bundles/blog-common.js?v=fobKU6DuMF7uNOMKEOEwhhLiN2dvU4IL2UfTDgUZOsY1" type="text/javascript"></script> </head> <body> <a name="top"></a> <!--done--> <div id="home"> <div id="header"> <div id="blogTitle"> <a id="lnkBlogLogo" href="https://www.cnblogs.com/shawWey/"><img id="blogLogo" src="/Skins/custom/images/logo.gif" alt="返回主页" /></a> <!--done--> <h1><a id="Header1_HeaderTitle" class="headermaintitle" href="https://www.cnblogs.com/shawWey/">shawWey</a></h1> <h2>知识的搬运工~~~浪里格朗</h2> </div><!--end: blogTitle 博客的标题和副标题 --> <div id="navigator"> <ul id="navList"> <li><a id="blog_nav_sitehome" class="menu" href="https://www.cnblogs.com/">博客园</a></li> <li><a id="blog_nav_myhome" class="menu" href="https://www.cnblogs.com/shawWey/">首页</a></li> <li><a id="blog_nav_newpost" class="menu" rel="nofollow" href="https://i.cnblogs.com/EditPosts.aspx?opt=1">新随笔</a></li> <li><a id="blog_nav_contact" class="menu" rel="nofollow" href="https://msg.cnblogs.com/send/shawWey">联系</a></li> <li><a id="blog_nav_rss" class="menu" href="https://www.cnblogs.com/shawWey/rss">订阅</a> <!--<a id="blog_nav_rss_image" class="aHeaderXML" href="https://www.cnblogs.com/shawWey/rss"><img src="//www.cnblogs.com/images/xml.gif" alt="订阅" /></a>--></li> <li><a id="blog_nav_admin" class="menu" rel="nofollow" href="https://i.cnblogs.com/">管理</a></li> </ul> <div class="blogStats"> <div id="blog_stats"> <span id="stats_post_count">随笔 - 124 </span> <span id="stats_article_count">文章 - 0 </span> <span id="stats-comment_count">评论 - 4</span> </div> </div><!--end: blogStats --> </div><!--end: navigator 博客导航栏 --> </div><!--end: header 头部 --> <div id="main"> <div id="mainContent"> <div class="forFlow"> <!--done--> .................
可见这种请求是可以的，接下来看下，如何拼接Json参数
Map<String, String> params = new HashMap<String, String>(); params.put("apName", apName); params.put("apPassword", apPassword); params.put("srcId", srcId); params.put("ServiceId", ServiceId); params.put("sendTime", sendTime); params.put("content", "我是短信内容"); params.put("calledNumber", "188888888888");
我们可以定义一个工具类进行参数的拼接
public class StringUtils { public static boolean isEmpty(String str) { return str == null || str.length() == 0; } public static String builderUrlParams(Map<String, String> params){ Set<String> keySet = params.keySet(); List<String> keyList = new ArrayList<String>(keySet); Collections.sort(keyList); StringBuilder sb = new StringBuilder(); for (String key : keyList) { String value = params.get(key); if (StringUtils.isEmpty(value)) { continue; } sb.append(key); sb.append("="); try { sb.append(URLEncoder.encode(params.get(key),"UTF-8")); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } sb.append("&"); } sb.deleteCharAt(sb.length() - 1); return sb.toString(); } }
完整的实例代码如下：
String postUrl ="postUrl我短信url"; String apName = "apName"; String apPassword = "apPassword"; String srcId = ""; String ServiceId = ""; String sendTime = ""; Map<String, String> params = new HashMap<String, String>(); params.put("apName", apName); params.put("apPassword", apPassword); params.put("srcId", srcId); params.put("ServiceId", ServiceId); params.put("sendTime", sendTime); params.put("content", "我是短信内容"); params.put("calledNumber", "188888888888"); try { String param = StringUtils.builderUrlParams(params); HttpResponse response = HttpUtils.sendPost(postUrl, param, Charset.forName("utf-8")); String conent= response.getContext(); int statusCode = response.getResponseStatus(); if (statusCode == 200) { //业务判断 } else { throw new IllegalStateException("返回HTTP状态码错误！httpStatus=" + statusCode + "; context=" + conent); } } catch (Exception e) { e.printStackTrace(); }
结束!
