我正在尝试使用Java(使用Netbeans,Glassfish和Jersey)编写REST Web服务。
我已经编写了一个小应用程序并且它可以工作。但是然后我尝试了以下操作:
package service;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.ws.rs.*;
import javax.ws.rs.core.Response;
import converter.FlyedpConverter;
import entities.FlysCombination;
@Path("/getdates")
public class FlyedpResource {
@GET
@Path("{date}")
@Produces({"application/json"})
public Response get(@PathParam("date") String date) throws IOException {
FlysCombination comb = new FlysCombination();
FlysCombination x = FlysCombination.instance();
comb = x.getcomb(date);
System.out.println(comb.toString());
if (comb == null) {
return Response.status(Response.Status.NOT_FOUND).build();
}
return Response.ok(comb).build();
}
}
我的类FlysCombination
:
package entities;
import converter.FlyedpConverter;
import java.util.ArrayList;
public class FlysCombination {
public FlysCombination() {}
public static FlysCombination flycomb = null;
public static FlysCombination instance() {
if (flycomb == null) {
flycomb = new FlysCombination();
}
return flycomb;
}
private String session;
@SuppressWarnings("rawtypes")
private ArrayList combinations = new ArrayList();
public FlysCombination(String session,ArrayList combinations) {
this.session=session;
this.combinations=combinations;
}
public ArrayList getcombinations() {
return combinations;
}
public void setcombinations(ArrayList goingthere) {
this.combinations = goingthere;
}
public String getsession() {
return session;
}
public void setsession(String session) {
this.session = session;
}
public FlysCombination getcomb(String a) {
FlyedpConverter fly = new FlyedpConverter (a);
combinations.add(fly);
session="sdjkbsqdjhf";
FlysCombination flycomb = new FlysCombination (session,combinations);
return(flycomb);
}
}
还有 FlyedpConverter
:
package converter;
public class FlyedpConverter {
private String keydate;
public FlyedpConverter(String keydate) {
this.keydate=keydate;
}
public String getkeydate() {
return keydate;
}
public void setkeydate(String keydate) {
this.keydate = keydate;
}
}
我遇到了以下错误:
Status: 500 (Internal Server Error) javax.ws.rs.WebApplicationException
at com.sun.jersey.spi.container.ContainerResponse.write(ContainerResponse.java:268)
at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1029)
at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:941)
at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:932)
at com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:384)
at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:451)
at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:632)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1523)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:279)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:188)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:641)
at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:97)
at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:85)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:185)
at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:325)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:226)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:165)
at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:791)
at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:693)
at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:954)
at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:170)
at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:135)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:102)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:88)
at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:76)
at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:53)
at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:57)
at com.sun.grizzly.ContextTask.run(ContextTask.java:69)
at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:330)
at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:309)
at java.lang.Thread.run(Thread.java:680)
我认为问题在于 @XmlRootElement
,但我不知道应该在哪里写它... 当我调试时,com
变量包含了结果,因此问题出现在 return Response.ok(comb).build();
有谁能帮助我吗?