webservice里的@queryparam、@pathparam、@DefaultValue使用介绍
发布时间:2020-12-16 22:56:29 所属栏目:安全 来源:网络整理
导读:1 先来看@queryparam ?? 先看例子: ? Path("/users") public class UserService { @GET @Path("/query") public Response getUsers( @QueryParam("from") int from,@QueryParam("to") int to,@QueryParam("orderBy") ListString orderBy) { return Response
1 先来看@queryparam
?? 先看例子: ? 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: @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 : 2011/6/302 以动态的方式获得: @Path("/users") public class UserService { @GET @Path("/query") public Response getUsers(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,orderBy" + orderBy.toString()).build(); } }输入为: URL;users/query?from=100&to=200&orderBy=age&orderBy=name输出为: getUsersis called,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: @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,to : " +to + ",orderBy" + orderBy.toString()).build(); }输入: URL:users/query输出: getUsers is called,from : 1000,to : 999,orderBy[name] (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |