Пример калькулятора веб-сервисов с использованием Java ⇐ JAVA

[Anonymous]

Я создал пример приложения-калькулятора суммы двух чисел с использованием веб-сервисов на Java и службы Джерси.

Мой код:
Calculator.java

package p1;
import javax.jws.WebService;
import javax.jws.WebMethod;
import javax.ws.rs.Path;

@WebService
@Path("/CalculatorService")
public class Calculator
{
@WebMethod
public String sum(int x,int y)
{
return ""+(x+y);
}
}


Калькулятор.java:

package mypack;

import javax.jws.WebMethod;
import javax.jws.WebParam;
import javax.jws.WebResult;
import javax.jws.WebService;
import javax.xml.ws.RequestWrapper;
import javax.xml.ws.ResponseWrapper;

/**
* This class was generated by the JAXWS SI.
* JAX-WS RI 2.0_02-b08-fcs
* Generated source version: 2.0
*
*/
@WebService(name = "Calculator", targetNamespace = "http://p1/")
public interface Calculator {

/**
*
* @param arg1
* @param arg0
* @return
* returns java.lang.String
*/
@WebMethod
@WebResult(targetNamespace = "")
@RequestWrapper(localName = "sum", targetNamespace = "http://p1/", className = "mypack.Sum")
@ResponseWrapper(localName = "sumResponse", targetNamespace = "http://p1/", className = "mypack.SumResponse")
public String sum(
@WebParam(name = "arg0", targetNamespace = "")
int arg0,
@WebParam(name = "arg1", targetNamespace = "")
int arg1);

}


CalculatorService.java:

package mypack;

import java.net.MalformedURLException;
import java.net.URL;
import javax.xml.namespace.QName;
import javax.xml.ws.Service;
import javax.xml.ws.WebEndpoint;
import javax.xml.ws.WebServiceClient;

/**
* This class was generated by the JAXWS SI.
* JAX-WS RI 2.0_02-b08-fcs
* Generated source version: 2.0
*
*/
@WebServiceClient(name = "CalculatorService", targetNamespace = "http://p1/", wsdlLocation = "http://localhost:8081/MyCalculatorWs/Ca ... rvice?WSDL")
public class CalculatorService
extends Service
{

private final static URL CALCULATORSERVICE_WSDL_LOCATION;

static {
URL url = null;
try {
url = new URL("http://localhost:8081/MyCalculatorWs/Ca ... rvice?WSDL");
} catch (MalformedURLException e) {
e.printStackTrace();
}
CALCULATORSERVICE_WSDL_LOCATION = url;
}

public CalculatorService(URL wsdlLocation, QName serviceName) {
super(wsdlLocation, serviceName);
}

public CalculatorService() {
super(CALCULATORSERVICE_WSDL_LOCATION, new QName("http://p1/", "CalculatorService"));
}

/**
*
* @return
* returns Calculator
*/
@WebEndpoint(name = "CalculatorPort")
public Calculator getCalculatorPort() {
return (Calculator)super.getPort(new QName("http://p1/", "CalculatorPort"), Calculator.class);
}

}


ObjectFactory.java:

package mypack;

import javax.xml.bind.JAXBElement;
import javax.xml.bind.annotation.XmlElementDecl;
import javax.xml.bind.annotation.XmlRegistry;
import javax.xml.namespace.QName;

/**
* This object contains factory methods for each
* Java content interface and Java element interface
* generated in the mypack package.
*
An ObjectFactory allows you to programatically
* construct new instances of the Java representation
* for XML content. The Java representation of XML
* content can consist of schema derived interfaces
* and classes representing the binding of schema
* type definitions, element declarations and model
* groups. Factory methods for each of these are
* provided in this class.
*
*/
@XmlRegistry
public class ObjectFactory {

private final static QName _Sum_QNAME = new QName("http://p1/", "sum");
private final static QName _SumResponse_QNAME = new QName("http://p1/", "sumResponse");

/**
* Create a new ObjectFactory that can be used to create new instances of schema derived classes for package: mypack
*
*/
public ObjectFactory() {
}

/**
* Create an instance of {@link Sum }
*
*/
public Sum createSum() {
return new Sum();
}

/**
* Create an instance of {@link SumResponse }
*
*/
public SumResponse createSumResponse() {
return new SumResponse();
}

/**
* Create an instance of {@link JAXBElement }{@code }}
*
*/
@XmlElementDecl(namespace = "http://p1/", name = "sum")
public JAXBElement createSum(Sum value) {
return new JAXBElement(_Sum_QNAME, Sum.class, null, value);
}

/**
* Create an instance of {@link JAXBElement }{@code }}
*
*/
@XmlElementDecl(namespace = "http://p1/", name = "sumResponse")
public JAXBElement createSumResponse(SumResponse value) {
return new JAXBElement(_SumResponse_QNAME, SumResponse.class, null, value);
}

}


package-info.java:

@javax.xml.bind.annotation.XmlSchema(namespace = "http://p1/")
package mypack;


Sum.java:

package mypack;

import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlType;

/**
*
Java class for sum complex type.
*
* The following schema fragment specifies the expected content contained within this class.
*
*
* <complexType name="sum">
* <complexContent>
* <restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
* <sequence>
* <element name="arg0" type="{http://www.w3.org/2001/XMLSchema}int"/>
* <element name="arg1" type="{http://www.w3.org/2001/XMLSchema}int"/>
* </sequence>
* </restriction>
* </complexContent>
* </complexType>
*
*
*
*/
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "sum", propOrder = {
"arg0",
"arg1"
})
public class Sum {

protected int arg0;
protected int arg1;

/**
* Gets the value of the arg0 property.
*
*/
public int getArg0() {
return arg0;
}

/**
* Sets the value of the arg0 property.
*
*/
public void setArg0(int value) {
this.arg0 = value;
}

/**
* Gets the value of the arg1 property.
*
*/
public int getArg1() {
return arg1;
}

/**
* Sets the value of the arg1 property.
*
*/
public void setArg1(int value) {
this.arg1 = value;
}

}


SumResponse.java:

package mypack;

import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlType;

/**
*
Java class for sumResponse complex type.
*
* The following schema fragment specifies the expected content contained within this class.
*
*
* <complexType name="sumResponse">
* <complexContent>
* <restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
* <sequence>
* <element name="return" type="{http://www.w3.org/2001/XMLSchema}string" minOccurs="0"/>
* </sequence>
* </restriction>
* </complexContent>
* </complexType>
*
*
*
*/
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "sumResponse", propOrder = {
"_return"
})
public class SumResponse {

@XmlElement(name = "return")
protected String _return;

/**
* Gets the value of the return property.
*
* @return
* possible object is
* {@link String }
*
*/
public String getReturn() {
return _return;
}

/**
* Sets the value of the return property.
*
* @param value
* allowed object is
* {@link String }
*
*/
public void setReturn(String value) {
this._return = value;
}

}


И мой файл web.xml:



CalculatorEx

index.html
index.htm
index.jsp
default.html
default.htm
default.jsp


Jersey REST Service
com.sun.jersey.spi.container.servlet.ServletContainer

com.sun.jersey.config.property.packages
com.restful.demo.resources

1


Jersey REST Service
/rest/*




Я выполняю свое приложение, используя:
http://localhost:8080/CalculatorEx/rest ... torService

я получаю такую ​​ошибку:

exception:
javax.servlet.ServletException: Servlet.init() for servlet Jersey REST Service threw exception
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:987)
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:579)
org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:309)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
java.lang.Thread.run(Thread.java:679)

root cause:
com.sun.jersey.api.container.ContainerException: The ResourceConfig instance does not contain any root resource classes.
com.sun.jersey.server.impl.application.RootResourceUriRules.(RootResourceUriRules.java:99)
com.sun.jersey.server.impl.application.WebApplicationImpl._initiate(WebApplicationImpl.java:1298)
com.sun.jersey.server.impl.application.WebApplicationImpl.access$700(WebApplicationImpl.java:169)
com.sun.jersey.server.impl.application.WebApplicationImpl$13.f(WebApplicationImpl.java:775)
com.sun.jersey.server.impl.application.WebApplicationImpl$13.f(WebApplicationImpl.java:771)
com.sun.jersey.spi.inject.Errors.processWithErrors(Errors.java:193)
com.sun.jersey.server.impl.application.WebApplicationImpl.initiate(WebApplicationImpl.java:771)
com.sun.jersey.server.impl.application.WebApplicationImpl.initiate(WebApplicationImpl.java:766)
com.sun.jersey.spi.container.servlet.ServletContainer.initiate(ServletContainer.java:488)
com.sun.jersey.spi.container.servlet.ServletContainer$InternalWebComponent.initiate(ServletContainer.java:318)
com.sun.jersey.spi.container.servlet.WebComponent.load(WebComponent.java:609)
com.sun.jersey.spi.container.servlet.WebComponent.init(WebComponent.java:210)
com.sun.jersey.spi.container.servlet.ServletContainer.init(ServletContainer.java:373)
com.sun.jersey.spi.container.servlet.ServletContainer.init(ServletContainer.java:556)
javax.servlet.GenericServlet.init(GenericServlet.java:160)
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:987)
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:579)
org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:309)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
java.lang.Thread.run(Thread.java:679)


Подробнее здесь: https://stackoverflow.com/questions/100 ... using-java