我在使用 swagger 文档生成时遇到了问题。
这是我使用的 maven deps:
<dependency>
<groupId>org.glassfish.jersey.ext</groupId>
<artifactId>jersey-spring3</artifactId>
<version>2.17</version>
<exclusions>
<exclusion>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
</exclusion>
<exclusion>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
</exclusion>
<exclusion>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>com.wordnik</groupId>
<artifactId>swagger-jersey2-jaxrs_2.10</artifactId>
<version>1.3.12</version>
</dependency>
我在 ResourceConfig 类中添加了 swagger 资源:
@ApplicationPath("REST")
public class RESTServlet extends ResourceConfig {
public RESTServlet() {
// ...
// Swagger
register(ApiListingResourceJSON.class);
register(JerseyApiDeclarationProvider.class);
register(JerseyResourceListingProvider.class);
// ...
}
}
然后我声明了一个 servlet 来配置 Swagger:
@WebServlet(name = "SwaggerJaxrsConfig", loadOnStartup = 2)
public class SwaggerJaxrsConfig extends HttpServlet {
@Override
public void init(ServletConfig config) throws ServletException {
super.init(config);
BeanConfig beanConfig = new BeanConfig();
beanConfig.setVersion("1.0.2");
beanConfig.setResourcePackage("some.foo.package");
beanConfig.setBasePath("http://localhost:8080/REST");
beanConfig.setScan(true);
}
}
通过上面的配置，swagger servlet 被选中:如果我浏览到 api-docs url，我得到以下内容:
{"apiVersion":"1.0.2","swaggerVersion":"1.2"}
但是，如果我将 swagger servlet 配置中的 api 包更改为如下所示的真实包:
@WebServlet(name = "SwaggerJaxrsConfig", loadOnStartup = 2)
public class SwaggerJaxrsConfig extends HttpServlet {
@Override
public void init(ServletConfig config) throws ServletException {
super.init(config);
BeanConfig beanConfig = new BeanConfig();
beanConfig.setVersion("1.0.2");
beanConfig.setResourcePackage("com.myrealcompanypackage");
beanConfig.setBasePath("http://localhost:8080/REST");
beanConfig.setScan(true);
}
}
我得到一个我不明白的异常:
[2015-07-23T11:05:14.802+0200] [glassfish 4.1] [WARNING] [] [javax.enterprise.web] [tid: _ThreadID=27 _ThreadName=http-listener-1(5)] [timeMillis: 1437642314802] [levelValue: 900] [[
StandardWrapperValve[com.myrealcompanypackage.platform.RESTServlet]: Servlet.service() for servlet com.myrealcompanypackage.platform.RESTServlet threw exception
java.lang.NullPointerException
at scala.collection.convert.Wrappers$JListWrapper.iterator(Wrappers.scala:87)
at scala.collection.IterableLike$class.foreach(IterableLike.scala:72)
at scala.collection.AbstractIterable.foreach(Iterable.scala:54)
at scala.collection.generic.Growable$class.$plus$plus$eq(Growable.scala:48)
at scala.collection.mutable.ListBuffer.$plus$plus$eq(ListBuffer.scala:176)
at scala.collection.mutable.ListBuffer.$plus$plus$eq(ListBuffer.scala:45)
at scala.collection.TraversableLike$class.to(TraversableLike.scala:629)
at scala.collection.AbstractTraversable.to(Traversable.scala:105)
at scala.collection.TraversableOnce$class.toList(TraversableOnce.scala:257)
at scala.collection.AbstractTraversable.toList(Traversable.scala:105)
at com.wordnik.swagger.jaxrs.listing.ApiListingResource$$anonfun$headersToMap$2.apply(ApiListing.scala:165)
at com.wordnik.swagger.jaxrs.listing.ApiListingResource$$anonfun$headersToMap$2.apply(ApiListing.scala:165)
at scala.collection.TraversableLike$WithFilter$$anonfun$map$2.apply(TraversableLike.scala:722)
at scala.collection.Iterator$class.foreach(Iterator.scala:727)
at scala.collection.AbstractIterator.foreach(Iterator.scala:1157)
at scala.collection.IterableLike$class.foreach(IterableLike.scala:72)
at scala.collection.AbstractIterable.foreach(Iterable.scala:54)
at scala.collection.TraversableLike$WithFilter.map(TraversableLike.scala:721)
at com.wordnik.swagger.jaxrs.listing.ApiListingResource.headersToMap(ApiListing.scala:165)
at com.wordnik.swagger.jaxrs.listing.ApiListingResource$$anonfun$3$$anonfun$apply$4.apply(ApiListing.scala:87)
at com.wordnik.swagger.jaxrs.listing.ApiListingResource$$anonfun$3$$anonfun$apply$4.apply(ApiListing.scala:86)
at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)
at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)
at scala.collection.Iterator$class.foreach(Iterator.scala:727)
at scala.collection.AbstractIterator.foreach(Iterator.scala:1157)
at scala.collection.MapLike$DefaultValuesIterable.foreach(MapLike.scala:206)
at scala.collection.TraversableLike$class.map(TraversableLike.scala:244)
at scala.collection.AbstractTraversable.map(Traversable.scala:105)
at com.wordnik.swagger.jaxrs.listing.ApiListingResource$$anonfun$3.apply(ApiListing.scala:86)
at com.wordnik.swagger.jaxrs.listing.ApiListingResource$$anonfun$3.apply(ApiListing.scala:85)
at scala.Option.map(Option.scala:145)
at com.wordnik.swagger.jaxrs.listing.ApiListingResource.resourceListing(ApiListing.scala:85)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory$1.invoke(ResourceMethodInvocationHandlerFactory.java:81)
at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher$1.run(AbstractJavaResourceMethodDispatcher.java:151)
at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.invoke(AbstractJavaResourceMethodDispatcher.java:171)
at org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$ResponseOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:152)
at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:104)
at org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:387)
at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:331)
at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:103)
at org.glassfish.jersey.server.ServerRuntime$1.run(ServerRuntime.java:271)
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:271)
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:267)
at org.glassfish.jersey.internal.Errors.process(Errors.java:315)
at org.glassfish.jersey.internal.Errors.process(Errors.java:297)
at org.glassfish.jersey.internal.Errors.process(Errors.java:267)
at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:297)
at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:254)
at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:1028)
at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:372)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:381)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:344)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:221)
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1682)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:318)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:160)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:734)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:673)
at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:174)
at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:415)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:282)
at com.sun.enterprise.v3.services.impl.ContainerMapper$HttpHandlerCallable.call(ContainerMapper.java:459)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:167)
at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:201)
at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:175)
at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:235)
at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:284)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:201)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:133)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:112)
at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77)
at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:561)
at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:112)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:117)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:56)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:137)
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:565)
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:545)
at java.lang.Thread.run(Thread.java:745)
]]
有人帮忙吗？
非常感谢。
最佳答案
显然这是与 Jersey 4.1 Jackson libs 版本相关的问题。
我最后做了什么让它起作用:
- 增加了 Swagger 版本(感谢 Ron 没有注意到这个新版本)
- 将
{glassfish_install}/glassfish/modules中的 Jackson jars 替换为最新版本(此时为 2.6)找到 here - 为我的域 (
{glassfish_install}/glassfish/domains/domain1/osgi-cache/felix) 删除了 osgi 缓存并重新启动了服务器。
关于java - Jersey 2 Swagger 配置，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/31582924/