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Ich bin neu in Java, Jersey und RESTful. Ich habe kürzlich das Jersey-Glas 2.23.2 und das Jersey-Medium Moxy 2.23.2 und die Java-Json-Bibliothek heruntergeladen.RESTful JSON mit Jersey 2.23.2
Ich sehe viele Beispiele in Google, aber meistens alle von ihnen unterscheiden sich. Es gibt kein genaues Beispiel, dem Sie folgen sollten. Ich habe versucht, es zu tun, aber immer noch nicht wissen, wie man den Beitrag konsumieren und Methoden mit HTTP-Client erhalten. Ich habe den folgenden Code veröffentlicht.
Auch habe ich den Postboten verwendet, um die codierten Methoden zu testen, aber ich bekomme einen Fehler auf die Post-Methode.
SEVERE: Servlet.service() for servlet [Service] in context with path [/com.myexample] threw exception [org.glassfish.jersey.server.ContainerException: java.lang.NoClassDefFoundError: javax/json/JsonException] with root cause
java.lang.ClassNotFoundException: javax.json.JsonException
Dies sind die Bibliotheken
Das ist mein web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">
<display-name>com.myexample</display-name>
<welcome-file-list>
<welcome-file>default.html</welcome-file>
</welcome-file-list>
<servlet>
<servlet-name>Service</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.myexample.resources<param-value>
</init-param>
<init-param>
<param-name>com.sun.jersey.api.json.POJOMappingFeature</param-name>
<param-value>true</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>Service</servlet-name>
<url-pattern>/api/*</url-pattern>
</servlet-mapping>
</web-app>
Dies ist die Klasse, die ich erstellt:
public class Employee {
private String firstName;
private String lastName;
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
@Override
public String toString() {
return this.firstName + " " + this.lastName;
}
}
Diese ist die Steuerung/Ressource
package com.myexample.resources;
import javax.ws.rs.Consumes;
import javax.ws.rs.GET;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import org.json.JSONException;
import org.json.JSONObject;
@Path("/test")
public class MyResource {
@GET
@Path("getEmployee")
@Produces(MediaType.APPLICATION_JSON)
public Response getEmployee() throws JSONException{
Employee employee = new Employee();
employee.setFirstName("John");
employee.setLastName("Smith");
JSONObject json = new JSONObject();
json.put("employee", employee);
return Response.status(200).entity(employee).build();
}
@POST
@Path("postEmployee")
@Consumes(MediaType.APPLICATION_JSON)
public Response postEmployee(Employee employee) throws JSONException{
return Response.status(200).entity(employee.toString()).build();
}
}
Ich versuchte, meinen http-Client
public class TestClient {
public static void main(String[] args) {
try {
//POST
Client client = ClientBuilder.newClient();
WebTarget webTarget = client.target("http://localhost:8080/com.myexample/api/test/postEmployee");
Employee emp = new Employee();
emp.setFirstName("John");
emp.setLastName("Smith");
Invocation.Builder invocationBuilder = webTarget.request(MediaType.APPLICATION_JSON);
//<--As it crashes the following line of this comment, I still don't know how to get my entity
Response response = invocationBuilder.post(Entity.entity(emp, MediaType.APPLICATION_JSON));
//Employee emp = readEntity(Employee.class); //???
} catch (Exception e) {
e.printStackTrace();
}
//GET
try {
Client client = ClientBuilder.newClient();
WebTarget webTarget = client.target("http://localhost:8080/com.myexample/api/test/getEmployee");
Invocation.Builder invocationBuilder = webTarget.request(MediaType.APPLICATION_JSON);
Response response = invocationBuilder.get();
//I get my response but how to deserialize the object
//Employee emp = (Employee)response.getEntity(); //CRASH, cannot cast
} catch (Exception e) {
e.printStackTrace();
}
}
}
Wie ich weiß noch nicht, zu erstellen, wie das Objekt auf meinem Klienten zurückzuholen, aber ich benutzen Postbote den Controller zu testen .
Dies ist die Ausgabe von Get-Methode mit Postman. Es funktioniert
Dies ist die Ausgabe von post-Methode mit Postbote ist. Es funktioniert nicht
Dies ist voller Fehler
Aug 18, 2016 11:37:59 PM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet [Service] in context with path [/com.myexample] threw exception [org.glassfish.jersey.server.ContainerException: java.lang.NoClassDefFoundError: javax/json/JsonException] with root cause
java.lang.ClassNotFoundException: javax.json.JsonException
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1313)
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1164)
at org.eclipse.persistence.internal.oxm.record.SAXUnmarshaller.getNewXMLReader(SAXUnmarshaller.java:200)
at org.eclipse.persistence.internal.oxm.record.SAXUnmarshaller.getXMLReader(SAXUnmarshaller.java:188)
at org.eclipse.persistence.internal.oxm.record.SAXUnmarshaller.unmarshal(SAXUnmarshaller.java:425)
at org.eclipse.persistence.internal.oxm.record.SAXUnmarshaller.unmarshal(SAXUnmarshaller.java:375)
at org.eclipse.persistence.internal.oxm.record.SAXUnmarshaller.unmarshal(SAXUnmarshaller.java:708)
at org.eclipse.persistence.internal.oxm.XMLUnmarshaller.unmarshal(XMLUnmarshaller.java:643)
at org.eclipse.persistence.jaxb.JAXBUnmarshaller.unmarshal(JAXBUnmarshaller.java:339)
at org.eclipse.persistence.jaxb.rs.MOXyJsonProvider.readFrom(MOXyJsonProvider.java:660)
at org.glassfish.jersey.message.internal.ReaderInterceptorExecutor$TerminalReaderInterceptor.invokeReadFrom(ReaderInterceptorExecutor.java:256)
at org.glassfish.jersey.message.internal.ReaderInterceptorExecutor$TerminalReaderInterceptor.aroundReadFrom(ReaderInterceptorExecutor.java:235)
at org.glassfish.jersey.message.internal.ReaderInterceptorExecutor.proceed(ReaderInterceptorExecutor.java:155)
at org.glassfish.jersey.server.internal.MappableExceptionWrapperInterceptor.aroundReadFrom(MappableExceptionWrapperInterceptor.java:74)
at org.glassfish.jersey.message.internal.ReaderInterceptorExecutor.proceed(ReaderInterceptorExecutor.java:155)
at org.glassfish.jersey.message.internal.MessageBodyFactory.readFrom(MessageBodyFactory.java:1085)
at org.glassfish.jersey.message.internal.InboundMessageContext.readEntity(InboundMessageContext.java:874)
at org.glassfish.jersey.server.ContainerRequest.readEntity(ContainerRequest.java:271)
at org.glassfish.jersey.server.internal.inject.EntityParamValueFactoryProvider$EntityValueFactory.provide(EntityParamValueFactoryProvider.java:96)
at org.glassfish.jersey.server.spi.internal.ParamValueFactoryWithSource.provide(ParamValueFactoryWithSource.java:71)
at org.glassfish.jersey.server.spi.internal.ParameterValueHelper.getParameterValues(ParameterValueHelper.java:94)
at org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$AbstractMethodParamInvoker.getParamValues(JavaResourceMethodDispatcherProvider.java:127)
at org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$ResponseOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:160)
at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:99)
at org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:389)
at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:347)
at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:102)
at org.glassfish.jersey.server.ServerRuntime$2.run(ServerRuntime.java:326)
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:317)
at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:305)
at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:1154)
at org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:473)
at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:427)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:388)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:341)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:228)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:617)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:518)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1091)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:668)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1527)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1484)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Unknown Source)
Maximus, können Sie umfassen die Implementierung Referenz Gläser hier: https://jsonp.java.net/download.html und versuchen Sie es erneut. –
Hinzufügen http://www.java2s.com/Code/Jar/j/Downloadjavaxjson10jar.htm zu Ihren libs –
Vielen Dank für Ihre Kommentare Jungs. Sehr geschätzt. Fast fast !!! Ich habe getan, was du gesagt hast, Ebrahim Pasbani, weil ich Maven nicht benutze. Jetzt stürzt der Tomcat nicht ab, aber ich bekomme den Fehler "HTTP-Status 400 - Schlechte Anfrage. Die vom Client gesendete Anfrage war syntaktisch falsch." –