Apache Camel到Firebase云消息API 400错误请求错误非JSON请求

Question

Postman成功调用Firebase API，但Apache Camel-Spring Boot应用程序返回错误。

API：https://fcm.googleapis.com/fcm/notification?notification_key_name=expectedvalue

Http方法：GET

标题：
授权：预期值
Content-Type：应用程序/json
project_id：预期值

响应代码：400
响应文本：错误请求
响应：{“错误”：“非JSON请求”}

使用以下语法从Java应用程序调用：
。托德(https://fcm.googleapis.com/fcm/notification?notification_key_name=expectedvalue)

所有必需的标题都已设置。身体是空的。HttpMethod也设置为GET。

更新：-添加代码-

public class MyRouteBuilder extends RouteBuilder{  

@Override  
    public void configure() throws Exception {  
        from("direct:notifyroute")  
        .bean(FirebaseNM.class, "getNotificationKey")  
        .setHeader("CamelHttpMethod", constant("GET"))  
        .toD("https://fcm.googleapis.com/fcm/notification?notification_key_name=expectedvalue").log("${body}");  
        //.to("https://fcm.googleapis.com/fcm/notification?notification_key_name=expectedvalue").log("${body}"); //Same error is thrown when I use 'to'  
    }  
}  

public class FirebaseNM{  
public void getNotificationKey(Exchange exchange){  
        exchange.getIn().removeHeaders("*"); //Code throws same error with or without this  
        exchange.removeProperties("*"); //Code throws same error with or without this  
        exchange.getIn().setBody(""); //Code throws same error with or without this  
        exchange.getIn().setHeader("Authorization", SERVER_KEY_VALUE);  
        exchange.getIn().setHeader("Content-Type", "application/json");  
        exchange.getIn().setHeader("project_id", PROJECT_ID_VALUE);          
    }  
}  

Alternate code that doesn't work:  
    rest().get("/nKey").route().removeHeaders("*")  
        .setHeader("Authorization", constant("server-key-value"))  
        .setHeader("Content-Type", constant("application/json"))  
        .setHeader("project_id", constant("project-id-value"))  
        .to("https://fcm.googleapis.com/fcm/notification?notification_key_name=key-name-value")  
        .endRest();  

更新：-问题--
有没有办法在Firebase控制台上查看错误/异常详细信息，或者从API获取详细响应？

更新：-问题2-Firebase云消息留档没有提到我收到的错误（在Enums列中）。
https://firebase.google.com/docs/reference/fcm/rest/v1/ErrorCode
我应该查看的任何其他留档？

Answer 1

你考虑过吗https://firebase.google.com/docs/functions/writing-and-viewing-logs?如果您可以访问服务器，这可能是一个选项。