im doing small test on suspending asynch request using jersey im getting error. let me show im trying , way server , running request failing:
path("/json/metallica") public class jsonservice { @get @path("/test") @produces(mediatype.application_json) public void getasynchhealthytracks(@suspended asyncresponse asyncresponse){ healthservice.getinstance().gethealththytracks(asyncresponse); } } when call local host on tomcat following error:
http status 500 - javax.ws.rs.processingexception: attempt suspend connection of asynchronous request failed in underlying container. type exception report message javax.ws.rs.processingexception: attempt suspend connection of asynchronous request failed in underlying container. description server encountered internal error prevented fulfilling request. exception javax.servlet.servletexception: javax.ws.rs.processingexception: attempt suspend connection of asynchronous request failed in underlying container. org.glassfish.jersey.servlet.webcomponent.service(webcomponent.java:391) org.glassfish.jersey.servlet.servletcontainer.service(servletcontainer.java:381) org.glassfish.jersey.servlet.servletcontainer.service(servletcontainer.java:344) org.glassfish.jersey.servlet.servletcontainer.service(servletcontainer.java:221) org.apache.tomcat.websocket.server.wsfilter.dofilter(wsfilter.java:51) root cause javax.ws.rs.processingexception: attempt suspend connection of asynchronous request failed in underlying container. org.glassfish.jersey.server.model.resourcemethodinvoker.apply(resourcemethodinvoker.java:312) org.glassfish.jersey.server.model.resourcemethodinvoker.apply(resourcemethodinvoker.java:103) org.glassfish.jersey.server.serverruntime$1.run(serverruntime.java:271) org.glassfish.jersey.internal.errors$1.call(errors.java:271) org.glassfish.jersey.internal.errors$1.call(errors.java:267) org.glassfish.jersey.internal.errors.process(errors.java:315) org.glassfish.jersey.internal.errors.process(errors.java:297) org.glassfish.jersey.internal.errors.process(errors.java:267) org.glassfish.jersey.process.internal.requestscope.runinscope(requestscope.java:297) org.glassfish.jersey.server.serverruntime.process(serverruntime.java:254) org.glassfish.jersey.server.applicationhandler.handle(applicationhandler.java:1028) org.glassfish.jersey.servlet.webcomponent.service(webcomponent.java:372) org.glassfish.jersey.servlet.servletcontainer.service(servletcontainer.java:381) org.glassfish.jersey.servlet.servletcontainer.service(servletcontainer.java:344) org.glassfish.jersey.servlet.servletcontainer.service(servletcontainer.java:221) org.apache.tomcat.websocket.server.wsfilter.dofilter(wsfilter.java:51) i have <async-supported>true</async-supported> in web.xml file , here contents of web.xml file:
<!doctype web-app public "-//sun microsystems, inc.//dtd web application 2.3//en" "http://java.sun.com/dtd/web-app_2_3.dtd" > <web-app> <display-name>archetype created web application</display-name> <servlet> <servlet-name>jersey-servlet</servlet-name> <servlet-class>org.glassfish.jersey.servlet.servletcontainer</servlet-class> <init-param> <param-name>jersey.config.server.provider.packages</param-name> <param-value>com.example.ema,com.fasterxml.jackson.jaxrs.json</param-value> <async-supported>true</async-supported> <load-on-startup>1</load-on-startup> </init-param> <init-param> <param-name>com.sun.jersey.api.json.pojomappingfeature</param-name> <param-value>true</param-value> </init-param> </servlet> <servlet-mapping> <servlet-name>jersey-servlet</servlet-name> <url-pattern>/rest/*</url-pattern> </servlet-mapping> </web-app> the health service builds pojo object , should send json. anyway, here service:
public class healthservice { private static healthservice instance = null; protected healthservice() { // exists defeat instantiation. } public static healthservice getinstance() { if(instance == null) { instance = new healthservice(); } return instance; } public void gethealthytracks(asyncresponse asyncresponse){ try { thread.sleep(3000); } catch (interruptedexception e) { e.printstacktrace(); } track track = new track(); track.setsinger("micheal jackson"); track.settitle("thriller"); asyncresponse.resume(track); } }
i put break point , not reach initial jersey call. server stops. end goal sleep few seconds , send response.
update: here photo of web.xml now:
i figured out issue. tag "true" should not put in init params section. should put inside servlet tag in web.xml file. web.xml looks this:
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:web="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/xmlschema-instance" xsi:schemalocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" version="3.1"> <display-name>archetype created web application</display-name> <servlet> <servlet-name>jersey-servlet</servlet-name> <servlet-class>org.glassfish.jersey.servlet.servletcontainer</servlet-class> <async-supported>true</async-supported> <init-param> <param-name>jersey.config.server.provider.packages</param-name> <param-value>com.example.ema,com.fasterxml.jackson.jaxrs.json</param-value> <load-on-startup>1</load-on-startup> </init-param> <init-param> <param-name>com.sun.jersey.api.json.pojomappingfeature</param-name> <param-value>true</param-value> </init-param> </servlet> <servlet-mapping> <servlet-name>jersey-servlet</servlet-name> <url-pattern>/rest/*</url-pattern> </servlet-mapping> </web-app> 
Comments
Post a Comment