如何在AmazoneWebServiceRequest上設置JSON負載

Question

我正在使用AmazonHttpClient & AmazonWebServiceRequest從android應用程序向API網關發出http請求。 requestBody是一個JSON字符串，DefaultRequest似乎只接受InputStream作爲內容。

final AmazonWebServiceRequest awsRequest = new AmazonWebServiceRequest() {}; 
final Request request = new DefaultRequest(awsRequest, UtilConstants.API_GATEWAY_SERVICE_NAME); 
request.setEndpoint(uri); 
request.setHttpMethod(requestType); 
request.addHeader(HttpHeader.CONTENT_TYPE, "application/json"); 
final InputStream stream = new ByteArrayInputStream(requestBody.getBytes(StandardCharsets.UTF_8)); 
request.setContent(stream); 

當我做我得到以下異常請求

Caused by: com.amazonaws.AmazonClientException: Unable to execute HTTP request: expected 0 bytes but received 38 

Answer 1

加入HttpHeader.CONTENT_LENGTH頭解決了這個問題。