1 先来看@queryparam
先看例子:
Java代码
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]
要注意的是,跟@pathparam不同,@queryparam中,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@pathparem中,URL中只出现参数的值,不出现键值对,比如:“/users/2011/06/30”
则:
Java代码
@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 以动态的方式获得:
Java代码
@Path("/users")
public class UserService {
@GET
@Path("/query")
public Response getUsers(@Context UriInfo info) {
String from = info.getQueryParameters().getFirst("from");
String to = info.getQueryParameters().getFirst("to");
List<String> orderBy = info.getQueryParameters().get("orderBy");
return Response
.status(200)
.entity("getUsers is called, from : " + from + ", to : " + to
+ ", orderBy" + orderBy.toString()).build();
}
URL;users/query?from=100&to=200&orderBy=age&orderBy=name
输出为:
getUsers is called, from : 100, to : 200, orderBy[age, name]
注意这里把orderby后的两个参数读入为LIST处理了.
3 @DefaultValue,默认值
例子:
Java代码
@Path("/users")
public class UserService {
@GET
@Path("/query")
public Response getUsers(
@DefaultValue("1000") @QueryParam("from") int from,
@DefaultValue("999")@QueryParam("to") int to,
@DefaultValue("name") @QueryParam("orderBy") List<String> orderBy) {
return Response
.status(200)
.entity("getUsers is called, from : " + from + ", to : " + to
+ ", orderBy" + orderBy.toString()).build();
}
URL:users/query
输出:getUsers is called, from : 1000, to : 999,
orderBy[name]
很好理解吧
