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几个关键字:
WebAPI, Android, Apache HttpComponent/HttpClient
问题:无论怎么测试, WebAPI的FormBody value总是空.
最简单的代码 WebAPI, 没有加认证
1 // POST api/<controller> 2 [HttpPost] 3 public string Post([FromBody]string value) 4 { 5 string val = value; 6 7 Debug.WriteLine(value); 8 9 return value; 10 }
最简单的代码, Java端,用StringEntity
1 public static void NotAuthTestPost() throws IOException { 2 CloseableHttpClient httpclient = HttpClients.createDefault(); 3 try { 4 HttpPost hp = new HttpPost("http://localhost:8888/api/test"); 5 6 String str="{‘Header‘:[{‘summary‘:111,‘endtime‘:570,‘end_date‘:1431381600,‘resid‘:‘sc20150512034635‘,‘starttime‘:570,‘scheduleid‘:‘sc155485e5025f3d‘,‘machid‘:‘sc155485e8044b93‘,‘parentid‘:null,‘start_date‘:1431381600}],‘Detail‘:[{‘perm_modify‘:1,‘owner‘:1,‘perm_delete‘:1,‘resid‘:‘sc20150512034635‘,‘memberid‘:‘sc1555070e4d8217‘,‘invited‘:0},{‘perm_modify‘:0,‘owner‘:0,‘perm_delete‘:0,‘resid‘:‘sc20150512034635‘,‘memberid‘:‘sc155489a07e0e24‘,‘invited‘:1}]}"; 7 8 StringEntity se = new StringEntity(str, ContentType.create("application/json", "UTF-8")); 9 hp.setEntity(se); 10 11 System.out.println(EntityUtils.toString(se)); 12 13 CloseableHttpResponse response1 = null; 14 try { 15 response1 = httpclient.execute(hp); 16 17 System.out.println(response1.getStatusLine()); 18 HttpEntity entity1 = response1.getEntity(); 19 20 // do something useful with the response body 21 // and ensure it is fully consumed 22 // EntityUtils.consume(entity1); 23 24 String jsonstr = EntityUtils.toString(entity1); 25 26 System.out.println(jsonstr); 27 28 } catch (ClientProtocolException e) { 29 e.printStackTrace(); 30 } catch (IOException e) { 31 e.printStackTrace(); 32 } finally { 33 response1.close(); 34 } 35 36 } finally { 37 httpclient.close(); 38 } 39 }
结果:
但是同样的Json, 使用C#的HTTPClient就完全没有问题.
计较了一下fiddle抓图:
使用C# HttpClient: (value是能取到)
使用Java Apache HttpClient (Value取不到)
比较一下就发现, 在Raw视图, 才可以看出, HttpRequest的Body是有不同的. 就是一对引号. "".
所以把Java的代码中加一行:
str ="\"" +str + "\"";
WebAPI端就正常拿到Value了.
估计有更深层次的解决方案, 暂且先记一笔.
使用Java HttpComponent/HttpClinet 调用 WebAPI问题的解决
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原文地址:http://www.cnblogs.com/tekikesyo/p/4500271.html