java 如何传递包含斜杠字符的字符串路径参数？
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How can I pass string path param containing slash character?
提问by Héctor
I have this REST resource:
我有这个 REST 资源：
@GET
@Path("{business},{year},{sample}")
@Produces(MediaType.APPLICATION_JSON)
public Response getSample(
@PathParam("business") String business,
@PathParam("year") String year,
@PathParam("sample") String sampleId {
Sample sample = dao.findSample(business, year, sampleId);
return Response.ok(sample).build();
}
sampleparam can contain slash character: 6576/M982, for instance.
sampleparam 可以包含斜杠字符：6576/M982，例如。
I'm calling it with http://ip:port/samples/2000,2006,6576/M982but does not work, obviously.
我正在调用它，http://ip:port/samples/2000,2006,6576/M982但显然不起作用。
I have also tried with http://ip:port/samples/2000,2006,6576%2FM982, encoding the slash as %2F, but doesn't work either, it doesn't reach the endpoint.
我也尝试过http://ip:port/samples/2000,2006,6576%2FM982，将斜杠编码为%2F，但也不起作用，它没有到达端点。
EDIT
编辑
I'm using Retrofit to call the endpoint and I do this:
我正在使用 Retrofit 调用端点，我这样做：
@GET("/samples/{business},{year},{sampleId}")
Observable<Sample> getSampleById(
@Path("business") String business,
@Path("year") String year,
@Path(value = "sampleId", encoded = true) String sampleId);
With encoded = true, but still not working.
有了encoded = true，但仍然没有工作。
回答by cassiomolin
Reserved characters such as ,and /must be URL encoded.
保留字符，例如,和/必须经过 URL 编码。
,is encoded as%2C/is encoded as%2F
,被编码为%2C/被编码为%2F
Try http://ip:port/samples/2000%2C2006%2C6576%2FM982.
试试http://ip:port/samples/2000%2C2006%2C6576%2FM982。
The RFC 3986defines the following set of reserved charactersthat can be used as delimiters. Hence, they require URL encoding:
在RFC 3986个定义了以下一组保留的字符可被用作分隔符。因此，它们需要 URL 编码：
: / ? # / [ ] / @ ! $ & ' ( ) * + , ; =
Unreserved charactersdo not require URL encoding:
非保留字符不需要 URL 编码：
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
a b c d e f g h i j k l m n o p q r s t u v w x y z
0 1 2 3 4 5 6 7 8 9 - _ . ~
If URL encoding ,is not a good alternative for you, you could consider using query parameters. Your code will be like:
如果 URL 编码,不适合您，您可以考虑使用查询参数。您的代码将类似于：
@GET
@Produces(MediaType.APPLICATION_JSON)
public Response getSample(@QueryParam("business") String business,
@QueryParam("year") String year,
@QueryParam("sample") String sampleId {
...
}
And your URL will be like http://ip:port/samples?business=2000&year=2006&sample=6576%2FM982.
你的 URL 将类似于http://ip:port/samples?business=2000&year=2006&sample=6576%2FM982.
Please note that the /still needs to be URL encoded.
请注意，/仍然需要进行 URL 编码。
回答by steva1988
Try to use {sample:.+}instead of {sample}
尝试使用{sample:.+}而不是{sample}
The @Path annotation is a regular expression and regex do not match /character.
@Path 注释是一个正则表达式，正则表达式不匹配/字符。
To override the regex, we can add ".+at the end of the PathParam.
要覆盖正则表达式，我们可以".+在PathParam.
In this way we can allow /in our path and avoid using %2F.
通过这种方式，我们可以允许/我们的路径并避免使用 %2F。
