向web服务发出POST请求

Question

我正在尝试向web服务发出发布请求，因为它只接受发布请求。我有一个代码

try { 
     URL url = new URL(createBookUrl + "?bookInfo=" + jsonStr); 
     BufferedReader in = new BufferedReader(new InputStreamReader(url.openStream())); 
     String inputLine = in.readLine(); 
     in.close(); 
     BookCreateResponse bookCreateResponse = new BookCreateResponse(); 
     ObjectMapper mapper = new ObjectMapper(); 
     bookCreateResponse = mapper.readValue(inputLine, new TypeReference<BookCreateResponse>(){}); 
     System.out.println(bookCreateResponse); 
    } catch (Exception ex) { 
     log.error(ex.getMessage()); 
    } 

现在我得到错误

Server returned HTTP response code: 405 for URL: ..... 

Answer 1

你可以用这个尝试：

import org.apache.http.HttpEntity; 
import org.apache.http.HttpResponse; 
import org.apache.http.client.ClientProtocolException; 
import org.apache.http.client.HttpClient; 
import org.apache.http.client.methods.HttpGet; 
import org.apache.http.client.methods.HttpPost; 
import org.apache.http.impl.client.HttpClientBuilder; 
import org.apache.http.util.EntityUtils; 

    private HttpClient client; 
    private HttpPost requestPost; 

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


    requestPost = new HttpPost(url+params); 
    HttpResponse response = client.execute(requestPost); 
    HttpEntity entiry = response.getEntity(); 
    responseString = EntityUtils.toString(entiry, "UTF-8");