将curl请求转换为aws cognito到java http请求

我正在尝试转换（cognito）：

通过java11网络库连接到java：

public void loginHttp(username,password,clientId) throws IOException, InterruptedException {
    HttpClient httpClient = HttpClient.newHttpClient();
    Map<Object,Object> credentialsMap = new HashMap<>();
    credentialsMap.put("USERNAME",username);
    credentialsMap.put("PASSWORD",password);

    Map<Object,Object> requestBody = new HashMap<>();
    requestBody.put("AuthFlow","USER_PASSWORD_AUTH");
    requestBody.put("ClientId",clientId);
    requestBody.put("AuthParameters",credentialsMap);

    HttpRequest request = HttpRequest.newBuilder(URI.create("https://cognito-idp.eu-west-1.amazonaws.com"))
            .header("X-Amz-Target","AWSCognitoIdentityProviderService.InitiateAuth")
            .header("Content-Type","application/x-amz-json-1.1")
            .POST(HttpRequest.BodyPublishers.ofString(requestBody.toString()))
            .build();

    HttpResponse<String> response = httpClient.send(request, HttpResponse.BodyHandlers.ofString());
    System.out.println(response.toString());
}

public void loginHttp（用户名、密码、客户端ID）引发IOException、InterruptedException{
HttpClient HttpClient=HttpClient.newHttpClient（）；
Map credentialsMap=新的HashMap（）；
credentialsMap.put（“用户名”，USERNAME）；
credentialsMap.put（“密码”，PASSWORD）；
Map requestBody=new HashMap（）；
put（“AuthFlow”、“USER\u PASSWORD\u AUTH”）；
requestBody.put（“ClientId”，ClientId）；
put（“AuthParameters”，credentialsMap）；
HttpRequest请求=HttpRequest.newBuilder（URI.create（“https://cognito-idp.eu-west-1.amazonaws.com"))
.header（“X-Amz-Target”、“AWSCognitoIdentityProviderService.InitiateAuth”）
.header（“内容类型”、“应用程序/x-amz-json-1.1”）
.POST（HttpRequest.bodypublisher.ofString（requestBody.toString（）））
.build（）；
HttpResponse response=httpClient.send（请求，HttpResponse.BodyHandlers.ofString（））；
System.out.println（response.toString（））；
}

当通过邮递员发送请求时，我得到的是回复（返回代码200），但当我使用java时，我得到的是返回代码400（错误请求）

我遗漏了什么吗？

看起来像是myMap。toString（）以字符串形式生成映射，但不包含 键和值周围的引号：

{
  key1 : value1
  key2 : value2
}

因此，我使用Jackson的对象映射器将贴图转换为正确的表示：

{ 
  "key1" : "value1"
  "key2" : "value2"
}

代码：

ObjectMapper objectMapper = new ObjectMapper();
String stringMap = objectMapper.writeValueAsString(requestBody)
HttpRequest request = HttpRequest.newBuilder(URI.create("https://cognito-idp.eu-west-1.amazonaws.com/"))
        .header("X-Amz-Target","AWSCognitoIdentityProviderService.InitiateAuth")
        .header("Content-Type","application/x-amz-json-1.1")
        .POST(HttpRequest.BodyPublishers.ofString(stringMap))
        .build();

（请注意POST方法args中使用的对象映射器）

ObjectMapper objectMapper = new ObjectMapper();
String stringMap = objectMapper.writeValueAsString(requestBody)
HttpRequest request = HttpRequest.newBuilder(URI.create("https://cognito-idp.eu-west-1.amazonaws.com/"))
        .header("X-Amz-Target","AWSCognitoIdentityProviderService.InitiateAuth")
        .header("Content-Type","application/x-amz-json-1.1")
        .POST(HttpRequest.BodyPublishers.ofString(stringMap))
        .build();