I have the following situation:
Using RMI, i noticed that under a specific situation, the RMI client did not have the class whose instance was sent via RMI. So, I sent the class in the shape of Byte [] and then loaded it with a class loader i defined.
The code in the client side is something like:
pp = plugins.getPanelClasses(); //RMI method
panelClassLoader pcl = new panelClassLoader(); //simple class loader defined by me
String name = pcl.defineClass(pp);
Then, i ask in the client side by the instance of the class loaded:
HashMap<String, PluginPanel> panels = null;
try
{
panels = plugins.getSettingsPanels();
} catch (RemoteException ex)
{
Logger.getLogger(ServerOptions.class.getName()).log(Level.SEVERE, null, ex);
}
PluginPanel is an interface whose implementing classes are not always in the client...
and the class loader is:
private class panelClassLoader extends ClassLoader
{
public panelClassLoader(ClassLoader parent)
{
super(parent);
}
public panelClassLoader()
{
super(getSystemClassLoader());
}
public String defineClass(byte[] b)
{
Class c = super.defineClass(null, b, 0, b.length);
resolveClass(c);
return c.getName();
}
}
Nevertheless, I'm stuck with the following error:
java.rmi.UnmarshalException: error unmarshalling return; nested exception is:
java.lang.ClassNotFoundException: pt.ua.dicoogle.IndexPlugin.CPanel (no security manager: RMI class loader disabled)
at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:178)
at java.rmi.server.RemoteObjectInvocationHandler.invokeRemoteMethod(RemoteObjectInvocationHandler.java:178)
at java.rmi.server.RemoteObjectInvocationHandler.invoke(RemoteObjectInvocationHandler.java:132)
at $Proxy22.getSettingsPanels(Unknown Source)
at pt.ua.dicoogle.rGUI.client.windows.ServerOptions.(ServerOptions.java:176)
Caused by: java.lang.ClassNotFoundException: pt.ua.dicoogle.IndexPlugin.CPanel (no security manager: RMI class loader disabled)
at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:375)
at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:165)
at java.rmi.server.RMIClassLoader$2.loadClass(RMIClassLoader.java:620)
at java.rmi.server.RMIClassLoader.loadClass(RMIClassLoader.java:247)
at sun.rmi.server.MarshalInputStream.resolveClass(MarshalInputStream.java:197)
at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1574)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1495)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1731)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1328)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:350)
at java.util.HashMap.readObject(HashMap.java:1030)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:974)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1848)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1752)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1328)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:350)
at sun.rmi.server.UnicastRef.unmarshalValue(UnicastRef.java:306)
at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:155)
Any sugestion?
You would have to call the remote method in the context of that class loader. Not a good scheme. Have a good look at the RMI codebase feature, it is designed for exactly this situation.
Related
I am trying to set up my unit tests so that I can test my HBase Client. However, I am having trouble mocking the creation of the connection to HBase in the constructor. I don't think I am correctly injecting the mocked connection into the class I want to test, but I'm not sure where I made the mistake. I've looked at similar questions about mocking a connection, but all of those have the creation of the connection outside of the constructor.
This is the code I am trying to test:
#Lazy
#Service("HBaseClient")
public class HBaseClient {
/**
* Instantiate a new client and create connection to HBase.
*/
public HBaseClient() {
// Create connection to HBase
conf = HBaseConfiguration.create();
conf.setInt("timeout", 120000);
conf.set("hbase.zookeeper.quorum", zookeeperHost);
conf.set("hbase.zookeeper.property.clientPort", zookeeperPort);
conf.set("zookeeper.znode.parent", znodeParent);
try {
connection = ConnectionFactory.createConnection(conf);
} catch (IOException e) {
logger.error("Error creating connection to HBase - IOException");
}
}
public void addRecord(String rowKey, String columnFamily, Map<String, String> values) {
...
Here is what I have in the unit test:
#RunWith(PowerMockRunner.class)
public class TestHBaseClient {
#InjectMocks
private static HBaseClient hbaseClient;
#BeforeClass
#PrepareForTest({ConnectionFactory.class})
public static void setUpBeforeClass() throws Exception {
Connection mockConnection = PowerMockito.mock(Connection.class);
PowerMockito.mockStatic(ConnectionFactory.class);
PowerMockito.when(ConnectionFactory.createConnection()).thenReturn(mockConnection);
hbaseClient = new HBaseClient();
}
#AfterClass
public static void tearDownAfterClass() throws Exception {
}
#Test
public void testAddRecord() {
HashMap<String, String> values = new HashMap<String, String>();
values.put("test1", "abc");
values.put("test2", "xyz");
hbaseClient.addRecord("test", "Test", values);
}
}
The code as it currently is throws the following error:
org.mockito.exceptions.misusing.MissingMethodInvocationException:
when() requires an argument which has to be 'a method call on a mock'.
For example:
when(mock.getArticles()).thenReturn(articles);
Also, this error might show up because:
1. you stub either of: final/private/equals()/hashCode() methods. Those methods cannot be stubbed/verified.
2. inside when() you don't call method on mock but on some other object.
3. the parent of the mocked class is not public. It is a limitation of the mock engine.
at org.powermock.api.mockito.PowerMockito.when(PowerMockito.java:495)
at
com.rtn.cdp.storage.hbase.test.TestHBaseDataClient.setUpBeforeClass(TestHBaseClient.java:32)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498) at
org.junit.internal.runners.ClassRoadie.runBefores(ClassRoadie.java:56)
at
org.junit.internal.runners.ClassRoadie.runProtected(ClassRoadie.java:43)
at
org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl.run(PowerMockJUnit44RunnerDelegateImpl.java:118)
at
org.powermock.modules.junit4.common.internal.impl.JUnit4TestSuiteChunkerImpl.run(JUnit4TestSuiteChunkerImpl.java:101)
at
org.powermock.modules.junit4.common.internal.impl.AbstractCommonPowerMockRunner.run(AbstractCommonPowerMockRunner.java:53)
at
org.powermock.modules.junit4.PowerMockRunner.run(PowerMockRunner.java:53)
at
org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)
at
org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
I am just tryig to understand the Soap WS. So I just write some simple classes as follow. but when I deploy this application in GlassFish and test it, the server returns the java.lang.reflect.InvocationTargetException. Can anybody say what the problem is?
#WebService
public class AuthorWS {
AuthorService authorService = new AuthorService();
#WebMethod
public Author getAuthorById(int authorId) {
return authorService.getAuthorById(authorId);
}
#WebMethod
public ArrayList<Author> getAllAuthors() {
return authorService.getAllAuthors();
}
}
Service Class:
public class AuthorService {
AuthorDAO authorDAO = new AuthorDAO();
public Author getAuthorById(int authorId){
return authorDAO.getAuthorById(authorId);
}
public ArrayList<Author> getAllAuthors(){
return authorDAO.getAllAuthors();
}
}
DAO Class:
public class AuthorDAO {
public Author getAuthorById(int authorId){
SessionFactory sessionFactory = new Configuration().configure().buildSessionFactory();
Criteria criteria = sessionFactory.openSession().createCriteria(Author.class);
criteria.add(Restrictions.eq("authorId", authorId));
return (Author) criteria.uniqueResult();
}
public ArrayList<Author> getAllAuthors(){
SessionFactory sessionFactory = new Configuration().configure().buildSessionFactory();
Criteria criteria = sessionFactory.openSession().createCriteria(Author.class);
return (ArrayList<Author>) criteria.list();
}
Exception:
'Caused by: java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:483) at org.glassfish.webservices.monitoring.WebServiceTesterServlet.doPost(WebServiceTesterServlet.java:313) ... 32 more Caused by: com.sun.xml.ws.fault.ServerSOAPFaultException: Client received SOAP Fault from server: com.sun.enterprise.container.common.spi.util.InjectionException: Error creating managed object for class: class com.hojat.LibrarySoapWS.ws.AuthorWS Please see the server log to find more detail regarding exact cause of the failure. at com.sun.xml.ws.fault.SOAP11Fault.getProtocolException(SOAP11Fault.java:193) at com.sun.xml.ws.fault.SOAPFaultBuilder.createException(SOAPFaultBuilder.java:131) at com.sun.xml.ws.client.sei.StubHandler.readResponse(StubHandler.java:253) at com.sun.xml.ws.db.DatabindingImpl.deserializeResponse(DatabindingImpl.java:203) at com.sun.xml.ws.db.DatabindingImpl.deserializeResponse(DatabindingImpl.java:290) at com.sun.xml.ws.client.sei.SyncMethodHandler.invoke(SyncMethodHandler.java:119) at com.sun.xml.ws.client.sei.SyncMethodHandler.invoke(SyncMethodHandler.java:92) at com.sun.xml.ws.client.sei.SEIStub.invoke(SEIStub.java:161) at com.sun.proxy.$Proxy312.getAllAuthors(Unknown Source)'
The problem is on the server side, as you can see from the stack trace
: Client received SOAP Fault from server:
com.sun.enterprise.container.common.spi.util.InjectionException:
Error creating managed object for class:
class com.hojat.LibrarySoapWS.ws.AuthorWS
Please see the server log to find more detail regarding exact cause of the failure.
So check the server log.
Hi I am new to Web Services, I have the requirement of Code First Approach,
I have an interface like below
package in.co.way2learn;
import javax.jws.WebMethod;
import javax.jws.WebParam;
import javax.jws.WebService;
#WebService(name="SQS",portName="SQSP",serviceName="SQSS")
public interface StockQuoteService {
#WebMethod(operationName="getPrice")
public double getPrice(#WebParam(name="symbol")String symbol);
#WebMethod(operationName="aaa",action="aaaAction")
public boolean update(#WebParam(name="sybmol")String symbol,#WebParam(name="price")double price);
#WebMethod(operationName="bbb",action="bbbAction")
public boolean update(#WebParam(name="sybmol")String symbol,#WebParam(name="price")double price,#WebParam(name="flag")boolean flag);
}
I want to expose an implementation if the the above interface as web service.
The implementation class is as below:
package in.co.way2learn;
import javax.jws.WebMethod;
import javax.jws.WebService;
#WebService(name="SQSI",
endpointInterface="in.co.way2learn.StockQuoteService",
portName="SQSIP",serviceName="SQSIS")
public class StockQuoteServiceImpl implements StockQuoteService{
#Override
public double getPrice(String symbol) {
System.out.println("StockQuoteServiceImpl.getPrice()");
return 123;
}
#Override
#WebMethod(operationName="aaa",action="aaaAction")
public boolean update(String symbol, double price) {
System.out.println("StockQuoteServiceImpl.update()");
return true;
}
#Override
#WebMethod(operationName="bbb",action="bbbAction")
public boolean update(String symbol, double price, boolean flag) {
System.out.println("StockQuoteServiceImpl.update()");
return true;
}
}
To expose this service as web service I am using JDK's EndPoint class as below.
package in.co.way2learn;
import javax.xml.ws.Endpoint;
public class Server {
public static void main(String[] args) {
StockQuoteService stockQuoteService=new StockQuoteServiceImpl();
String address="http://localhost:8080/sqs";
Endpoint.publish(address, stockQuoteService);
System.out.println("Server started..!");
}
}
But When I run the server program I am getting the following exception.
Exception in thread "main" javax.xml.ws.WebServiceException: class in.co.way2learn.jaxws.Update do not have a property of the name flag
at com.sun.xml.internal.ws.server.sei.EndpointArgumentsBuilder$DocLit.<init>(Unknown Source)
at com.sun.xml.internal.ws.server.sei.EndpointMethodHandler.createArgumentsBuilder(Unknown Source)
at com.sun.xml.internal.ws.server.sei.EndpointMethodHandler.<init>(Unknown Source)
at com.sun.xml.internal.ws.server.sei.SEIInvokerTube.<init>(Unknown Source)
at com.sun.xml.internal.ws.server.EndpointFactory.createEndpoint(Unknown Source)
at com.sun.xml.internal.ws.api.server.WSEndpoint.create(Unknown Source)
at com.sun.xml.internal.ws.transport.http.server.EndpointImpl.createEndpoint(Unknown Source)
at com.sun.xml.internal.ws.transport.http.server.EndpointImpl.publish(Unknown Source)
at com.sun.xml.internal.ws.spi.ProviderImpl.createAndPublishEndpoint(Unknown Source)
at javax.xml.ws.Endpoint.publish(Unknown Source)
at in.co.way2learn.Server.main(Server.java:10)
Caused by: javax.xml.bind.JAXBException: flag is not a valid property on class in.co.way2learn.jaxws.Update
at com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl.getElementPropertyAccessor(Unknown Source)
... 11 more
Here in StockQuoteService interface and corresponding implementation I have two overloaded update method one is taking two parameters while other is taking three.
If I change second update method name to different name, then the server is running fine without exception.
But exception is coming when i have overloaded update methods only.
Even though I kept overloaded methods, their operation names and corresponding soap actions are different, you can see them in annotations on top of the methods.
Any help will give me great relief and appreciated as well.
I'm relatively new to JavaEE and web services, however, I'm using netbeans to generate my client and webservice resources. I have a resource "CustomerData" that represents a mysql database table and a value "rewardsPoints" representing a column in that table, however, I am unable to update the value due to a ConstraintViolationException, specifically:
javax.validation.ConstraintViolationException: Bean Validation constraint(s) violated while executing Automatic Bean Validation on callback event:'preUpdate'. Please refer to embedded ConstraintViolations for details.
I'm not familiar with the 'preUpdate' callback event, is it something I need to override? I can't seem to figure out exactly why this exception is being thrown, but, as I said, i'm very new to web service programming. Here are my classes:
#Stateless
#Path("customers")
public class CustomerDataFacadeREST extends AbstractFacade<CustomerData> {
#PersistenceContext(unitName = "CustomerPortalPU")
private EntityManager em;
public CustomerDataFacadeREST() {
super(CustomerData.class);
}
#PUT
#Path("{id}")
#Consumes({"application/xml", "application/json"})
public void edit(#PathParam("id") Integer id, CustomerData entity) {
super.edit(entity);
}
#GET
#Path("{id}")
#Produces({"application/xml", "application/json"})
public CustomerData find(#PathParam("id") Integer id) {
return super.find(id);
}
#GET
#Path("addPoints/{id}/{amount}")
#Produces({"text/plain"})
public String addPoints(#PathParam("id") Integer id, #PathParam("amount") int amount) {
CustomerData customer = find(id);
customer.getRewardsPoints(customer.getRewardsPoints() + amount);
em.persist(customer);
edit(customer);
return customer.getRewardsPoints();
}
#Override
protected EntityManager getEntityManager() {
return em;
}
}
And the CustomerData entity class:
#Entity
#Table(name = "tbl_customer_data")
#XmlRootElement
public class CustomerData implements Serializable {
private static final long serialVersionUID = 1L;
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
#Basic(optional = false)
#Column(name = "id")
private Integer id;
#Basic(optional = false)
#NotNull
#Column(name = "rewards_points")
private int rewardsPoints;
public CustomerData(Integer id, int rewardsPoints) {
this.id = id;
this.rewardsPoints = rewardsPoints;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public int getRewardsPoints() {
return rewardsPoints;
}
public void setRewardsPoints(int rewardsPoints) {
this.rewardsPoints = rewardsPoints;
}
}
When I try to access the URI:
http://localhost:8080/CustomerPortal/ws/customers/addPoints/1/5
to add 5 points to user with id 1 i get an HTTP 500 error and in the glassfish logs it says
[2013-11-05T03:28:11.733-0500] [glassfish 4.0] [WARNING] [ejb.system_exception] [javax.enterprise.system.container.ejb.com.sun.ejb.containers] [tid: _ThreadID=21 _ThreadName=http-listener-1(3)] [timeMillis: 1383640091733] [levelValue: 900] [[
EJB5184:A system exception occurred during an invocation on EJB CustomerDataFacadeREST, method: public java.lang.String com.webservice.entities.CustomerDataFacadeREST.addPoints(java.lang.Integer,int)]]
[2013-11-05T03:28:11.741-0500] [glassfish 4.0] [WARNING] [] [javax.enterprise.web] [tid: _ThreadID=21 _ThreadName=http-listener-1(3)] [timeMillis: 1383640091741] [levelValue: 900] [[
StandardWrapperValve[com.webservice.entities.ApplicationConfig]: Servlet.service() for servlet com.webservice.entities.ApplicationConfig threw exception
javax.validation.ConstraintViolationException: Bean Validation constraint(s) violated while executing Automatic Bean Validation on callback event:'preUpdate'. Please refer to embedded ConstraintViolations for details.
Any resources, insight or information regarding this issue would be extremely helpful.
The exception has little to do with web services: it has to do with Bean Validation instead.
In this case, since the Validation fails inside method addPoints (look at the stack trace) the only line that can cause it is when persisting or editing an Entity of type CustomerData. The only constraint you have in that class is that rewardsPoints should not be null. So, that's the cause of the exception.
However there some things that won't work in addPoints method:
You should check that find() method doesn't return a null object.
customer.getRewardsPoints(customer.getRewardsPoints() + amount) never sets the property (does it compile?)
EntityManager.persist() throws exception if the entity already exists. You probably want to remove that line if you only want to edit (update) the entity.
Note: I am not sure that the code you have posted is really compiling and causing that exception. That's probably caused by another version.
I try to modified the VFSTransportListener class in WSO2. But I encountered this error :
Multiple markers at this line
- Cannot override the final method from AbstractTransportListenerEx<PollTableEntry>
- overrides org.apache.axis2.transport.base.AbstractTransportListenerEx<org.apache.synapse.transport.vfs.PollTableEntry>.init
This error happen in the init method.
Can anyone help me how to solve this problem?
You are trying to override the following method in AbstractTransportListenerEx class
#Override
public final void init(ConfigurationContext cfgCtx,
TransportInDescription transportIn) throws AxisFault {
super.init(cfgCtx, transportIn);
doInit();
// Create endpoint configured at transport level (if available)
E endpoint = createEndpoint();
endpoint.init(this, null);
if (endpoint.loadConfiguration(transportIn)) {
globalEndpoint = endpoint;
}
}
This cannot be overridden as it is a final method.