英文:
SparkJava GET Handler Returning NULL After Serialization of Long
问题
我正在尝试使用SparkJava编写一个简单的服务器，但在使用Gson序列化长整型并将JSON传输到GET处理程序内的OkHttp客户端程序时遇到了相当大的困难。服务器返回NULL，更具体地说，response.body.string() 为
<html><body><h2>404 Not found</h2></body></html>
对于这个问题有什么想法吗？谢谢。
以下是GET处理程序：
get("routingEngine/getDefaultRoute/distance", (request,response) ->{
response.type("application/json");
long distance = 100;
return gson.toJson(distance);
});
以下是进行简单请求的客户端代码（请忽略与请求一起传递的参数（requestParameters），它们只是向不相关的前置过滤器提供信息）：
// 构建 URL
HttpUrl url = new HttpUrl.Builder()
.scheme("http")
.host("127.0.0.1")
.port(4567)
.addPathSegment("routingEngine")
.addPathSegment("getDefaultRoute")
.addPathSegment("distance")
.build();
// 构建请求
Request getDefaultRouteDistanceRequest = new Request.Builder()
.url(url)
.post(RequestBody.create(JSON,gson.toJson(requestParameters)))
.build();
// 发送请求
Call getDefaultRouteDistanceCall = httpClient.newCall(getDefaultRouteDistanceRequest);
Response getDefaultRouteDistanceResponse = getDefaultRouteDistanceCall.execute();
// 解析响应
// 测试
System.out.println(getDefaultRouteDistanceResponse.body().string());
最后一行导致以下输出：
<html><body><h2>404 Not found</h2></body></html>
英文:
I'm trying to write a simple server with SparkJava but I am having considerable difficulty serialize a long using Gson and transmitting the JSON to an OkHttp client program inside a GET handler. The server returns NULL, more specifically response.body.string() is
<html><body><h2>404 Not found</h2></body></html>
Any ideas on what the issue could be? thanks.
Here is the GET handler:
get("routingEngine/getDefaultRoute/distance", (request,response) ->{
response.type("application/json");
long distance = 100;
return gson.toJson(distance);
});
Here is the client code making the simple request (please disregard the parameters (requestParameters) being passed in along with the request, they just provide information to an irrelevant before filter):
// build url
HttpUrl url = new HttpUrl.Builder()
.scheme("http")
.host("127.0.0.1")
.port(4567)
.addPathSegment("routingEngine")
.addPathSegment("getDefaultRoute")
.addPathSegment("distance")
.build();
// build request
Request getDefaultRouteDistanceRequest = new Request.Builder()
.url(url)
.post(RequestBody.create(JSON,gson.toJson(requestParameters)))
.build();
// send request
Call getDefaultRouteDistanceCall = httpClient.newCall(getDefaultRouteDistanceRequest);
Response getDefaultRouteDistanceResponse = getDefaultRouteDistanceCall.execute();
// parse response
// testing
System.out.println(getDefaultRouteDistanceResponse.body().string());
The last line leads to the following output
<html><body><h2>404 Not found</h2></body></html>
答案1
得分: 1
你创建的终端是一个GET终端，而所进行的调用是POST。
英文:
The endpoint you created was a GET endpoint and the call being made is for POST.
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