将装箱原语列表传递给Google Cloud Endpoint

I am struggling with Lists as method parameters at Google Cloud Endpoints.

我正在努力将Lists作为Google Cloud Endpoints的方法参数。

The documentations says that

文件说明了这一点

The supported parameter types are the following:

支持的参数类型如下：

java.util.Collection of a parameter type

java.util.Collection参数类型

I tried to do it this way, but it just do not work. Basic endpoint method:

我试着这样做，但它只是不起作用。基本端点方法：

@ApiMethod(name = "testMethod", httpMethod = HttpMethod.POST)
public void testMethod(@Named("longList") List<Long> longList) {
    for (Long aLong : longList) {
        if (aLong < 5) {
            throw new IllegalArgumentException("You can't do it");
        }
    }
}

When I execute this method using API Exploler the generated URL is:

当我使用API Exploler执行此方法时，生成的URL为：

POST http://localhost:8080/_ah/api/billEndpoint/v1/testMethod?longList=5&longList=6

And the method is executed correctly.

并且该方法正确执行。

But when Android library is used the url is changed to:

但是当使用Android库时，url会更改为：

http://APP_ENGINE_BACKEND:8080/_ah/api/billEndpoint/v1/testMethod/5,6

and the endpoint return 404 code.

并且端点返回404代码。

It is possible to have List as method parameter and if it is what I am doing wrong?

可以将List作为方法参数，如果它是我做错了吗？

2 个解决方案

#1

Please add @Nullable annotation to your method, that will turn your collection-type parameter from a path into a query parameter.

请将@Nullable注释添加到您的方法中，这会将您的集合类型参数从路径转换为查询参数。

https://developers.google.com/appengine/docs/java/endpoints/annotations#nullable

#2

A more direct way is to add a path property to the API_METHOD annotation and not include the List parameter in the path. As stated here: "If path is specified, parameters can be made query parameters by not including them in the path"

更直接的方法是向API_METHOD注释添加路径属性，而不在路径中包含List参数。如下所述：“如果指定了路径，则可以通过不在路径中包含参数来创建参数查询参数”

In your case it should look like:

在你的情况下，它应该看起来像：

@ApiMethod(name = "testMethod", path="testMethod" httpMethod = HttpMethod.POST)

@ApiMethod（name =“testMethod”，path =“testMethod”httpMethod = HttpMethod.POST）

#1