Apache http post example

Question

我对这个Apache http客户端很新。我有一个网址来对其中一个服务进行web服务调用。我成功地执行GET请求，但我试图用POST请求执行此操作，但我没有得到任何回应。我无法从实体获取内容。

我的网址：“https://maps.googleapis.com/maps/api/place/details/xml?reference=CoQBcQAAAEZ7yCju-0lhU7sZIBBe_On9jYImWzZ9Zt5rIg1tX6zaH02dHrQMHF1LFHY1_yUuXzsUf6m6-rrQJ8Ec_mGxBYtV85Wyb4anakaUi3QuZj7ygJXB3Fd5x69k_4UnDKMmEBNa410vbCXgQOGIkHCbNpcbC8ENxmVlUrqiifmdfuLgEhCtPATMhFRdsjuyAL_j__OEGhTnqujRRMYy_5-kxzcqCdMY4_1dbA&sensor=true&key=key1”;

这是使用GET方法执行的。下面你可以看到我的代码。

public class HttpClientPostExample { 
public static void main(String[] args) throws ClientProtocolException, 
     IOException { 
    String url = "https://maps.googleapis.com/maps/api/place/details/xml?"; 

    HttpClient client = HttpClientBuilder.create().build(); 
    // HttpRequest httpRequest = HttpsClientImpl.createRequest("Post", url); 
    HttpPost httpPost = new HttpPost(url); 

    List<NameValuePair> nameValuePairList = new ArrayList<NameValuePair>(); 
    nameValuePairList 
      .add(new BasicNameValuePair(
        "reference", 
        "CoQBcQAAAEZ7yCju-0lhU7sZIBBe_On9jYImWzZ9Zt5rIg1tX6zaH02dHrQMHF1LFHY1_yUuXzsUf6m6-rrQJ8Ec_mGxBYtV85Wyb4anakaUi3QuZj7ygJXB3Fd5x69k_4UnDKMmEBNa410vbCXgQOGIkHCbNpcbC8ENxmVlUrqiifmdfuLgEhCtPATMhFRdsjuyAL_j__OEGhTnqujRRMYy_5-kxzcqCdMY4_1dbA")); 
    nameValuePairList.add(new BasicNameValuePair("sensor", "true")); 
    nameValuePairList.add(new BasicNameValuePair("key", 
      "AIzaSyBA0Hu3is9qIJ5v6NEuofigk0y-aQwqiP0")); 
    httpPost.addHeader("User-Agent", "User-Agent"); 
    httpPost.setEntity(new UrlEncodedFormEntity(nameValuePairList, "UTF-8")); 
    HttpResponse response = client.execute(httpPost); 
    System.out.println(response.getStatusLine().getStatusCode()); 

    Header[] headerArray = response.getAllHeaders(); 
    for (Header header : headerArray) { 
     System.out.println("Header Name: " + header.getName() 
       + " Header Value: " + header.getValue()); 
    } 
} 

任何人都可以帮助我做到这一点。这是做POST请求的正确方法...？

如何在触发/调用执行方法之前获取实际的URL ... ???

Answer 1

尝试从

HttpClient client = HttpClientBuilder.create().build(); 

更改client实例化技术

DefaultHttpClient client = new DefaultHttpClient(); 

，并确保你的实体已经完全消耗，拨打电话到EntityUtils.consume(entity)显示效应初探头前：

... 
HttpResponse response = client.execute(httpPost); 
EntityUtils.consume(response.getEntity()); 
Header[] headerArray = response.getAllHeaders(); 
for (Header header : headerArray) { 
    System.out.println("Header Name: " + header.getName() 
      + " Header Value: " + header.getValue()); 
}