Restful之参数获取

先来看@QueryParam :

Path("/users")
public class UserService { 
	@GET
	@Path("/query")
	public Response getUsers(
		@QueryParam("from") int from,
		@QueryParam("to") int to,
		@QueryParam("orderBy") List<String> orderBy) {
 
		return Response
		   .status(200)
		   .entity("getUsers is called, from : " + from + ", to : " + to
			+ ", orderBy" + orderBy.toString()).build();
 
	} 
}

URL输入为:

users/query?from=100&to=200&orderBy=age&orderBy=name

此时,输出为:

getUsers is called, from : 100, to : 200, orderBy[age, name]

@QueryParam指定的是URL中的参数是以键值对的形式出现的,而在程序中

@QueryParam("from") int from

则读出URL中from的值, 而@PathParam中,URL中只出现参数的值,不出现键值对,比如:

/users/2011/06/30

@PathParam参数:

	@GET
	@Path("{year}/{month}/{day}")
	public Response getUserHistory(
			@PathParam("year") int year,
			@PathParam("month") int month, 
			@PathParam("day") int day) {
 
	   String date = year + "/" + month + "/" + day;
 
	   return Response.status(200)
		.entity("getUserHistory is called, year/month/day : " + date)
		.build();
 
	}

输出为:

getUserHistory is called, year/month/day : 2011/6/30
2 weeks ago, this page was being read.

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