Question

我使用Jersey和Tomcat7进行了restfull实现。我在campher.rest包中定义了3个名为RegionService，ClientService和NoteService的资源。

当我尝试添加另一个名为TestResource的资源并启动Tomcat时，它会在下面给出以下错误。我不明白/ {notes}如何与/ {test}冲突？请帮忙，我的头发会谢谢你。

Aug 22, 2012 2:23:39 AM com.sun.jersey.api.core.ScanningResourceConfig logClasses
INFO: Root resource classes found:
  class campher.rest.NoteService
  class campher.rest.ClientService
  class campher.rest.TestResource
  class campher.rest.RegionService
Aug 22, 2012 2:23:39 AM com.sun.jersey.api.core.ScanningResourceConfig init
INFO: No provider classes found.
Aug 22, 2012 2:23:40 AM com.sun.jersey.server.impl.application.WebApplicationImpl _initiate
INFO: Initiating Jersey application, version 'Jersey: 1.12 02/15/2012 04:51 PM'
Aug 22, 2012 2:23:40 AM com.sun.jersey.spi.inject.Errors processErrorMessages
SEVERE: The following errors and warnings have been detected with resource and/or provider classes:
  SEVERE: Conflicting URI templates. The URI template /{test} for root resource class campher.rest.TestResource and the URI template /{notes} transform to the same regular expression /([^/]+?)(/.*)?
Aug 22, 2012 2:23:40 AM org.apache.catalina.core.ApplicationContext log
SEVERE: StandardWrapper.Throwable

以下是这4项服务的骨架实现。

package campher.rest;
@Path("regions")
public class RegionService {
    @GET
    @Produces(MediaType.APPLICATION_JSON)
    public Response regions() {}

    @POST
    @Consumes(MediaType.APPLICATION_JSON)
    public Region addRegion(Region region){}

    @PUT
    @Consumes(MediaType.APPLICATION_JSON)
    public Region updateRegion(Region region){}

    @GET @Path("{id}")  
    @Produces(MediaType.APPLICATION_JSON)
    public Response getRegion(@PathParam("id") long id) {}

    @DELETE @Path("{id}")   
    @Produces(MediaType.APPLICATION_JSON)
    public Response deleteRegion(@PathParam("id") long id) {}

    @GET @Path("{id}/clients")  
    @Produces(MediaType.APPLICATION_JSON)
    public Response getClients(@PathParam("id") long id) {}
}



package campher.rest;
@Path("clients")
public class ClientService {
    @GET
    @Produces(MediaType.APPLICATION_JSON)
    public Response clients() {}

    @GET @Path("{id}")  
    @Produces(MediaType.APPLICATION_JSON)
    public Response getClient(@PathParam("id") long id) {}

    @GET @Path("{id}/notes")    
    @Produces(MediaType.APPLICATION_JSON)
    public Response getNotes(@PathParam("id") long id) {}

    @GET @Path("{id}/alerts")   
    @Produces(MediaType.APPLICATION_JSON)
    public Response getAlerts(@PathParam("id") long id) {}

    @POST
    @Consumes(MediaType.APPLICATION_JSON)
    public Client addClient(Client client){}

    @PUT
    @Consumes(MediaType.APPLICATION_JSON)
    public Client updateClient(Client client){}

    @DELETE @Path("{id}")   
    @Consumes(MediaType.APPLICATION_JSON)
    public Response deleteClient(@PathParam("id") long id){}
}

package campher.rest;
@Path("{notes}")
public class NoteService {  
    @GET @Path("{id}")  
    @Produces(MediaType.APPLICATION_JSON)
    public Response getNote(@PathParam("id") long id) {}

    @POST
    @Consumes(MediaType.APPLICATION_JSON)
    public Note addNote(Note note){}

    @PUT
    @Consumes(MediaType.APPLICATION_JSON)
    public Note updateNote(Note note){}

    @DELETE @Path("{id}")   
    @Produces(MediaType.APPLICATION_JSON)
    public Response deleteNote(@PathParam("id") long id) {}     
}

package campher.rest;
import javax.ws.rs.Path;
@Path("{test}")
public class TestResource {

}

Answer 1

@Path("test")

将匹配<web-root>/test

@Path("{test}")

将匹配<web-root>/foo和<web-root>/bar。这里的单词test只是用于关联foo和bar值的路径 - 参数映射键。

注意名称周围是否存在{}。它们彻底改变了表达的含义。它们的存在表明您想要将其解压缩并将其放在用@PathParam("name-between-brackets")注释的实例变量中。

您的@Path("{test}")和@Path("{notes}")两者基本上都要求泽西岛查找http://<host:port>/<webapp>/{capture-text}表格的根网址，并将capture-text复制到test和{{ 1}}路径变量。这是不明确的。

尝试添加资源类时出现冲突的URI模板错误

1 个答案: