org.apache.http.client.HttpResponseException：錯誤的請求 - 通過REST發送JSON請求

我收到錯誤org.apache.http.client.HttpResponseException：錯誤的請求，當我嘗試運行此程序。org.apache.http.client.HttpResponseException：錯誤的請求 - 通過REST發送JSON請求

你能幫我理解我應該修改代碼嗎？

我使用下列庫的HttpClient-4.4.1.jar 的HttpCore-4.4.1.jar 共享記錄-1.1.2.jar

org.apache.http.client.HttpResponseException：錯誤的請求

下面是代碼：

import org.apache.http.client.HttpClient; 
import org.apache.http.client.ResponseHandler; 
import org.apache.http.client.methods.HttpPost; 
import org.apache.http.entity.StringEntity; 
import org.apache.http.impl.client.BasicResponseHandler; 
import org.apache.http.impl.client.DefaultHttpClient; 

public class Test { 
public static void main(String args[]) throws Exception { 
    HttpClient httpclient = new DefaultHttpClient(); 
    HttpPost postRequest = new HttpPost("http://localhost:8080/engine-rest/process-definition/key/demo-scaling/start"); 
    try { 
     StringEntity input = new StringEntity("(\"variables\":{}, \"businessKey\" : \"AAA001\")"); 
     postRequest.addHeader("Accept", "application/json"); 
     postRequest.setEntity(input); 
     postRequest.addHeader("Content-Type", "application/json"); 
     ResponseHandler<String> responseHandler = new BasicResponseHandler(); 
     String responseBody = httpclient.execute(postRequest, responseHandler); 
     System.out.println(responseBody); 
    } catch (Exception e) { 

     e.printStackTrace(); 
    } finally { 
     httpclient.getConnectionManager().shutdown(); 
    } 
} 

}

來源

2016-06-24 Adam

「http：// localhost：8080/engine-rest/process-definition/key/demo- scaling/start」爲什麼在縮放/啓動之前你有空格？如果您需要空格，請使用％20。那麼你將有一個有效的網址和正確的請求:) – Hrabosch

我有它正確的程序Hrabosch我剛剛檢查它。 – Adam

好吧，那麼你可以嘗試例如郵編擴展爲Chrome和嘗試手動呼叫我。 – Hrabosch

好吧，試試這個：

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

    try { 
     HttpPost request = new HttpPost("http://localhost:8080/engine-rest/process-definition/key/demo-scaling/start"); 
     StringEntity params =new StringEntity("variables={\"businessKey\":\"AAA001\"}"); 
     request.addHeader("content-type", "application/x-www-form-urlencoded"); 
     request.setEntity(params); 
     HttpResponse response = httpClient.execute(request); 

     System.out.println(response); 
    }catch (Exception ex) { 
     // handle Exceptions 
    }

使用httpclientbuilder獲取客戶端（DefaultHttpClient - >已棄用），我不確定您是否擁有有效的JSON數據，這只是我的建議。

來源

2016-06-25 19:07:46 Hrabosch

org.apache.http.client.HttpResponseException：錯誤的請求 - 通過REST發送JSON請求

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