Question

我有当前的服务类，该类提供针对角度应用程序的GET，POST和DELETE请求：

 @Path("Trips")
    public class TripREST {
    ...
    ...

    @POST
    @Path("Trip")
    @Produces("application/json")
    @Consumes("application/json")
    @Transactional
    public Response addTrip(Trip trip) {
        tripDao.addTrip(trip);
        return Response.ok().entity("Trip added successfully").build();
    }
    ...
   @GET
   @Path("Names/{tripId}")
   @Produces("application/json")
   public List<Names> loadNames(@PathParam("tripId") String tripId) {
    List<Names> names = tripDao.getNames(triplId);
    return names;
   }

    ...
    @DELETE
    @Path("Trip/Delete/{id}")
    public Response deleteTrip(@PathParam("id") String id) {
        tripDao.deleteTrip(Integer.valueOf(id));        
        return Response.ok().entity("Trip deleted successfully").build();
    }
    ...
    }

我正在尝试从浏览器的url运行该服务以进行测试，POST和其他GET方法工作正常，但DELETE不起作用，也没有错误。

让url工作正常：

http://localhost:8080/jboss-seam-jpa/seam/resource/rest/Trips/Names/10000000

无效的删除网址是：

http://localhost:8080/jboss-seam-jpa/seam/resource/rest/Trips/Trip/Delete/13

我得到的是“找不到页面”错误，我里面有调试点服务方法，没有钩子。

这是来自角度应用程序的服务呼叫：

const httpOptions = {
  headers: new HttpHeaders({ 'Accept': 'text/plain', 'Content-Type': 'text/plain' })
};
...
...
deleteTrip(id: string) {    
    return this.http.delete(`${this.baseUrl}/Trips/Trip/Delete/${id}`, httpOptions);
  }

更新：我已经使用POSTMAN测试了该服务，发现其余api正常运行。因此问题出在维修服务电话上。我意识到我没有订阅，所以我将通话更改为：

deleteTrip(id: string) {    
        return this.http.delete(`${this.baseUrl}/Trips/Trip/Delete/${id}`, httpOptions).subscribe();
      }

我在chrome浏览器控制台中看到的是以下错误消息：

zone.js:2935 OPTIONS http://localhost:8080/jboss-seam-jpa/seam/resource/rest/Funds/Instrument/Delete/12 405 (Method Not Allowed)
scheduleTask @ zone.js:2935
ZoneDelegate.scheduleTask @ zone.js:407
onScheduleTask @ zone.js:297
ZoneDelegate.scheduleTask @ zone.js:401
Zone.scheduleTask @ zone.js:232
Zone.scheduleMacroTask @ zone.js:255
scheduleMacroTaskWithCurrentZone @ zone.js:1092
(anonymous) @ zone.js:2967
proto.(anonymous function) @ zone.js:1372
(anonymous) @ http.js:2366
Observable._trySubscribe @ Observable.js:172
Observable.subscribe @ Observable.js:160
subscribeToResult @ subscribeToResult.js:23
MergeMapSubscriber._innerSub @ mergeMap.js:138
MergeMapSubscriber._tryNext @ mergeMap.js:135
MergeMapSubscriber._next @ mergeMap.js:118
Subscriber.next @ Subscriber.js:92
ScalarObservable._subscribe @ ScalarObservable.js:51
Observable._trySubscribe @ Observable.js:172
Observable.subscribe @ Observable.js:160
MergeMapOperator.call @ mergeMap.js:92
Observable.subscribe @ Observable.js:157
MaterializeOperator.call @ materialize.js:64
Observable.subscribe @ Observable.js:157
DelayOperator.call @ delay.js:66
Observable.subscribe @ Observable.js:157
DeMaterializeOperator.call @ dematerialize.js:59
Observable.subscribe @ Observable.js:157
subscribeToResult @ subscribeToResult.js:23
MergeMapSubscriber._innerSub @ mergeMap.js:138
MergeMapSubscriber._tryNext @ mergeMap.js:135
MergeMapSubscriber._next @ mergeMap.js:118
Subscriber.next @ Subscriber.js:92
ScalarObservable._subscribe @ ScalarObservable.js:51
Observable._trySubscribe @ Observable.js:172
Observable.subscribe @ Observable.js:160
MergeMapOperator.call @ mergeMap.js:92
Observable.subscribe @ Observable.js:157
FilterOperator.call @ filter.js:61
Observable.subscribe @ Observable.js:157
MapOperator.call @ map.js:57
Observable.subscribe @ Observable.js:157
InstrumentsComponent.deleteFundInstrument @ instruments.component.ts:127
(anonymous) @ InstrumentsComponent.html:139
handleEvent @ core.js:13547
callWithDebugContext @ core.js:15056
debugHandleEvent @ core.js:14643
dispatchEvent @ core.js:9962
(anonymous) @ core.js:10587
(anonymous) @ platform-browser.js:2628
ZoneDelegate.invokeTask @ zone.js:421
onInvokeTask @ core.js:4740
ZoneDelegate.invokeTask @ zone.js:420
Zone.runTask @ zone.js:188
ZoneTask.invokeTask @ zone.js:496
invokeTask @ zone.js:1517
globalZoneAwareCallback @ zone.js:1543
30056021:1 Failed to load http://localhost:8080/jboss-seam-jpa/seam/resource/rest/Trips/Trip/Delete/12: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost:4200' is therefore not allowed access.

Cors过滤器tomcat 7配置：

<filter>
        <filter-name>CorsFilter</filter-name>
        <filter-class>com.thetransactioncompany.cors.CORSFilter</filter-class>
        <init-param>
            <param-name>cors.allowed.origins</param-name>
            <param-value>*</param-value>
        </init-param>
        <init-param>
            <param-name>cors.allowed.methods</param-name>
            <param-value>GET,POST,HEAD,OPTIONS,PUT,DELETE</param-value>
        </init-param>
        <init-param>
           <param-name>cors.supportedHeaders</param-name>
           <param-value>Content-Type, Accept, Authorization</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>CorsFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

如何使用resteasy和Java实现DELETE请求？

0 个答案: