java調用webservice的各種方法總結

一、利用jdk web服務api實現,這裏使用基於 SOAP message 的 Web 服務

  1.首先建立一個Web services EndPoint:

  Java代碼

  package Hello;

  import javax.jws.WebService;

  import javax.jws.WebMethod;

  import javax.xml.ws.Endpoint;

  @WebService

  public class Hello {

  @WebMethod

  public String hello(String name) {

  return "Hello, " + name + "/n";

  }

  public static void main(String[] args) {

  // create and publish an endpoint

  Hello hello = new Hello();

  Endpoint endpoint = Endpoint.publish("http://localhost:8080/hello", hello);

  }

  }

  package Hello;

  import javax.jws.WebService;

  import javax.jws.WebMethod;

  import javax.xml.ws.Endpoint;

  @WebService

  public class Hello {

  @WebMethod

  public String hello(String name) {

  return "Hello, " + name + "/n";

  }

  public static void main(String[] args) {

  // create and publish an endpoint

  Hello hello = new Hello();

  Endpoint endpoint = Endpoint.publish("http://localhost:8080/hello", hello);

  }

  }

  2.使用 apt 編譯 Hello.java(例:apt -d [存放編譯後的文件目錄] Hello.java ) ,會生成 jaws目錄

  3.使用java Hello.Hello運行,然後將瀏覽器指向http://localhost:8080/hello?wsdl就會出現下列顯示

  4.使用wsimport 生成客戶端

  使用如下:wsimport -p . -keep http://localhost:8080/hello?wsdl

  5.客戶端程序:

  Java代碼

  class HelloClient{

  public static void main(String args[]) {

  HelloService service = new HelloService();

  Hello helloProxy = service.getHelloPort();

  String hello = helloProxy.hello("你好");

  System.out.println(hello);

  }

  }

  class HelloClient{

  public static void main(String args[]) {

  HelloService service = new HelloService();

  Hello helloProxy = service.getHelloPort();

  String hello = helloProxy.hello("你好");

  System.out.println(hello);

  }

  }

 

二、使用xfire,我這裏使用的是myeclipse集成的xfire進行測試

  利用xfire開發WebService,可以有三種方法:

  1一種是從javabean 中生成;

  2 一種是從wsdl文件中生成;

  3 還有一種是自己建立webservice

  步驟如下:

  用myeclipse建立webservice工程,目錄結構如下:

  首先建立webservice接口,

  代碼如下:

  Java代碼

  package com.myeclipse.wsExample;

  //Generated by MyEclipse

  public interface IHelloWorldService {

  public String example(String message);

  }

  package com.myeclipse.wsExample;

  //Generated by MyEclipse

  public interface IHelloWorldService {

  public String example(String message);

  }

  Java代碼

  package com.myeclipse.wsExample;

  //Generated by MyEclipse

  public class HelloWorldServiceImpl implements IHelloWorldService {

  public String example(String message) {

  return message;

  }

  }

  package com.myeclipse.wsExample;

  //Generated by MyEclipse

  public class HelloWorldServiceImpl implements IHelloWorldService {

  public String example(String message) {

  return message;

  }

  }

  修改service.xml 文件,加入以下代碼:

  Xml代碼

  <service>

  <name>HelloWorldService</name>

  <serviceClass>

  com.myeclipse.wsExample.IHelloWorldService

  </serviceClass>

  <implementationClass>

  com.myeclipse.wsExample.HelloWorldServiceImpl

  </implementationClass>

  <style>wrapped</style>

  <use>literal</use>

  <scope>application</scope>

  </service>

  <service>

 <name>HelloWorldService</name>

  <serviceClass>

  com.myeclipse.wsExample.IHelloWorldService

  </serviceClass>

  <implementationClass>

  com.myeclipse.wsExample.HelloWorldServiceImpl

  </implementationClass>

  <style>wrapped</style>

  <use>literal</use>

  <scope>application</scope>

  </service>

  把整個項目部署到tomcat服務器中 ,打開瀏覽器,輸入http://localhost:8989/HelloWorld/services/HelloWorldService?wsdl

  客戶端實現如下:

  Java代碼

  package com.myeclipse.wsExample.client;

  import java.net.MalformedURLException;

  import java.net.URL;

  import org.codehaus.xfire.XFireFactory;

  import org.codehaus.xfire.client.Client;

  import org.codehaus.xfire.client.XFireProxyFactory;

  import org.codehaus.xfire.service.Service;

  import org.codehaus.xfire.service.binding.ObjectServiceFactory;

  import com.myeclipse.wsExample.IHelloWorldService;

  public class HelloWorldClient {

  public static void main(String[] args) throws MalformedURLException, Exception {

  // TODO Auto-generated method stub

  Service s=new ObjectServiceFactory().create(IHelloWorldService.class);

  XFireProxyFactory xf=new XFireProxyFactory(XFireFactory.newInstance().getXFire());

  String url="http://localhost:8989/HelloWorld/services/HelloWorldService";

  try

  {

  IHelloWorldService hs=(IHelloWorldService) xf.create(s,url);

  String st=hs.example("zhangjin");

  System.out.print(st);

  }

  catch(Exception e)

  {

  e.printStackTrace();

  }

  }

  }

  package com.myeclipse.wsExample.client;

  import java.net.MalformedURLException;

  import java.net.URL;

  import org.codehaus.xfire.XFireFactory;

  import org.codehaus.xfire.client.Client;

  import org.codehaus.xfire.client.XFireProxyFactory;

  import org.codehaus.xfire.service.Service;

  import org.codehaus.xfire.service.binding.ObjectServiceFactory;

  import com.myeclipse.wsExample.IHelloWorldService;

public class HelloWorldClient {

  public static void main(String[] args) throws MalformedURLException, Exception {

  // TODO Auto-generated method stub

  Service s=new ObjectServiceFactory().create(IHelloWorldService.class);

  XFireProxyFactory xf=new XFireProxyFactory(XFireFactory.newInstance().getXFire());

  String url="http://localhost:8989/HelloWorld/services/HelloWorldService";

  try

  {

  IHelloWorldService hs=(IHelloWorldService) xf.create(s,url);

  String st=hs.example("zhangjin");

  System.out.print(st);

  }

  catch(Exception e)

  {

  e.printStackTrace();

  }

  }

  }

  這裏再說點題外話,有時候我們知道一個wsdl地址,比如想用java客戶端引用.net 做得webservice,使用myeclipse引用,但是卻出現無法通過驗證的錯誤,這時我們可以直接在類中引用,步驟如下:

  Java代碼

  public static void main(String[] args) throws MalformedURLException, Exception {

  // TODO Auto-generated method stub

  Service s=new ObjectServiceFactory().create(IHelloWorldService.class);

  XFireProxyFactory xf=new XFireProxyFactory(XFireFactory.newInstance().getXFire());

  //遠程調用.net開發的webservice

  Client c=new Client(new URL("http://www.webxml.com.cn/webservices/qqOnlineWebService.asmx?wsdl"));

  Object[] o=c.invoke("qqCheckOnline", new String[]{"531086641","591284436"});

  //調用.net本機開發的webservice

  Client c1=new Client(new URL("http://localhost/zj/Service.asmx?wsdl"));

  Object[] o1=c1.invoke("HelloWorld",new String[]{});

  }

  public static void main(String[] args) throws MalformedURLException, Exception {

  // TODO Auto-generated method stub

  Service s=new ObjectServiceFactory().create(IHelloWorldService.class);

  XFireProxyFactory xf=new XFireProxyFactory(XFireFactory.newInstance().getXFire());

  //遠程調用.net開發的webservice

  Client c=new Client(new URL("http://www.webxml.com.cn/webservices/qqOnlineWebService.asmx?wsdl"));

  Object[] o=c.invoke("qqCheckOnline", new String[]{"531086641","591284436"});

  //調用.net本機開發的webservice

  Client c1=new Client(new URL("http://localhost/zj/Service.asmx?wsdl"));

  Object[] o1=c1.invoke("HelloWorld",new String[]{});

  }

三、使用axis1.4調用webservice方法

  前提條件:下載axis1.4包和tomcat服務器   ,並將axis文件夾複製到tomcat服務器的webapp文件夾中

  這裏我就說一下最簡單的方法:

  首先建立一個任意的java類(例如:HelloWorld.java),複製到axis文件夾下,將其擴展名改爲jws,然後重新啓動tomcat,在瀏覽器中輸入http://localhost:8989/axis/HelloWorld.jws?wsdl,就會得到一個wsdl文件,其客戶端調用方法如下:

  Java代碼

  import javax.xml.rpc.Service;

  import javax.xml.rpc.ServiceException;

  import javax.xml.rpc.ServiceFactory;

  import java.net.MalformedURLException;

  import java.net.URL;

  import java.rmi.RemoteException;

  import javax.xml.namespace.QName;

  public class TestHelloWorld {

  public static void main(String[] args) throws MalformedURLException, ServiceException, RemoteException {

  // TODO Auto-generated method stub

  String wsdlUrl ="http://localhost:8989/axis/HelloWorld.jws?wsdl";

  String nameSpaceUri ="http://localhost:8989/axis/HelloWorld.jws";

  String serviceName = "HelloWorldService";

  String portName = "HelloWorld";

  ServiceFactory serviceFactory = ServiceFactory.newInstance();

  Service afService =serviceFactory.createService(new URL(wsdlUrl),new QName(nameSpaceUri, serviceName));

  HelloWorldInterface proxy = (HelloWorldInterface)afService.getPort(new QName(nameSpaceUri, portName),HelloWorldInterface.class);

  System.out.println("return value is "+proxy.getName("john") ) ;

  }

  }

  import javax.xml.rpc.Service;

  import javax.xml.rpc.ServiceException;

  import javax.xml.rpc.ServiceFactory;

  import java.net.MalformedURLException;

  import java.net.URL;

  import java.rmi.RemoteException;

  import javax.xml.namespace.QName;

  public class TestHelloWorld {

  public static void main(String[] args) throws MalformedURLException, ServiceException, RemoteException {

  // TODO Auto-generated method stub

  String wsdlUrl ="http://localhost:8989/axis/HelloWorld.jws?wsdl";

  String nameSpaceUri ="http://localhost:8989/axis/HelloWorld.jws";

  String serviceName = "HelloWorldService";

  String portName = "HelloWorld";

  ServiceFactory serviceFactory = ServiceFactory.newInstance();

  Service afService =serviceFactory.createService(new URL(wsdlUrl),new QName(nameSpaceUri, serviceName));

  HelloWorldInterface proxy = (HelloWorldInterface)afService.getPort(new QName(nameSpaceUri, portName),HelloWorldInterface.class);

  System.out.println("return value is "+proxy.getName("john") ) ;

  }

  }

  四、使用axis2開發webservice(這裏首先感謝李寧老師)

  使用axis2 需要先下載

  axis2-1.4.1-bin.zip

  axis2-1.4.1-war.zip

  http://ws.apache.org/axis2/

  同理,也需要將axis2複製到webapp目錄中

  在axis2中部署webservice有兩種方法,

  第一種是pojo方式,這種方式比較簡單,但是有一些限制,例如部署的類不能加上包名

  第二種方式是利用xml發佈webservice,這種方法比較靈活,不需要限制類的聲明

  下面分別說明使用方法:

  1.pojo方式:在Axis2中不需要進行任何的配置,就可以直接將一個簡單的POJO發佈成WebService。其中POJO中所有的public方法將被髮布成WebService方法。先實現一個pojo類:

  Java代碼

  public class HelloWorld{

  public String getName(String name)

  {

  return "你好 " + name;

  }

public int add(int a,int b)

  {

  return a+b;

  }

  }

  public class HelloWorld{

  public String getName(String name)

  {

  return "你好 " + name;

  }

  public int add(int a,int b)

  {

  return a+b;

  }

  }

  由於這兩個方法都是public類型,所以都會發布成webservice。編譯HelloWorld類後,將HelloWorld.class文件放到%tomcat%/webapps/axis2/WEB-INF/pojo目錄中(如果沒有pojo目錄,則建立該目錄),然後打開瀏覽器進行測試

  輸入一下url:

  http://localhost:8080/axis2/services/listServices

  會列出所有webservice

  這是其中的兩個webservice列表,接着,在客戶端進行測試

  首先可以寫一個封裝類,減少編碼,代碼如下:

  Java代碼

  package MZ.GetWebService;

  import javax.xml.namespace.QName;

  import org.apache.axis2.AxisFault;

  import org.apache.axis2.addressing.EndpointReference;

  import org.apache.axis2.client.Options;

  import org.apache.axis2.rpc.client.RPCServiceClient;

  public class GetWSByAxis2 {

  private static String EndPointUrl;

  private static String QUrl="http://ws.apache.org/axis2";

  private QName opAddEntry;

  public String WSUrl;

  public RPCServiceClient setOption() throws AxisFault

  {

  RPCServiceClient serviceClient = new RPCServiceClient();

  Options options = serviceClient.getOptions();

  EndpointReference targetEPR = new EndpointReference(WSUrl);

  options.setTo(targetEPR);

  return serviceClient;

  }

  public QName getQname(String Option){

  return new QName (QUrl,Option);

  }

  //返回String

  public String getStr(String Option) throws AxisFault

  {

  RPCServiceClient serviceClient =this.setOption();

  opAddEntry =this.getQname(Option);

  String str = (String) serviceClient.invokeBlocking(opAddEntry,

  new Object[]{}, new Class[]{String.class })[0];

  return str;

  }

  // 返回一維String數組

  public String[] getArray(String Option) throws AxisFault

  {

  RPCServiceClient serviceClient =this.setOption();

  opAddEntry =this.getQname(Option);

  String[] strArray = (String[]) serviceClient.invokeBlocking(opAddEntry,

  new Object[]{}, new Class[]{String[].class })[0];

  return strArray;

  }

  //從WebService中返回一個對象的實例

  public Object getObject(String Option,Object o) throws AxisFault

  {

  RPCServiceClient serviceClient =this.setOption();

  QName qname=this.getQname(Option);

  Object object = serviceClient.invokeBlocking(qname, new Object[]{},new Class[]{o.getClass()})[0];

  return object;

  }

/////////////////////////////////////////       讀者可以自己封裝數據類型,如int,byte,float等數據類型

  }

  package MZ.GetWebService;

  import javax.xml.namespace.QName;

  import org.apache.axis2.AxisFault;

  import org.apache.axis2.addressing.EndpointReference;

  import org.apache.axis2.client.Options;

  import org.apache.axis2.rpc.client.RPCServiceClient;

  public class GetWSByAxis2 {

  private static String EndPointUrl;

  private static String QUrl="http://ws.apache.org/axis2";

  private QName opAddEntry;

  public String WSUrl;

  public RPCServiceClient setOption() throws AxisFault

  {

  RPCServiceClient serviceClient = new RPCServiceClient();

  Options options = serviceClient.getOptions();

  EndpointReference targetEPR = new EndpointReference(WSUrl);

  options.setTo(targetEPR);

  return serviceClient;

  }

  public QName getQname(String Option){

  return new QName (QUrl,Option);

  }

  //返回String

  public String getStr(String Option) throws AxisFault

  {

  RPCServiceClient serviceClient =this.setOption();

  opAddEntry =this.getQname(Option);

  String str = (String) serviceClient.invokeBlocking(opAddEntry,

  new Object[]{}, new Class[]{String.class })[0];

  return str;

  }

  // 返回一維String數組

  public String[] getArray(String Option) throws AxisFault

  {

  RPCServiceClient serviceClient =this.setOption();

  opAddEntry =this.getQname(Option);

  String[] strArray = (String[]) serviceClient.invokeBlocking(opAddEntry,

  new Object[]{}, new Class[]{String[].class })[0];

  return strArray;

  }

  //從WebService中返回一個對象的實例

  public Object getObject(String Option,Object o) throws AxisFault

  {

  RPCServiceClient serviceClient =this.setOption();

  QName qname=this.getQname(Option);

  Object object = serviceClient.invokeBlocking(qname, new Object[]{},new Class[]{o.getClass()})[0];

  return object;

  }

  /////////////////////////////////////////       讀者可以自己封裝數據類型,如int,byte,float等數據類型

  }

  客戶端調用方法:

  Java代碼

  MZ.GetWebService.GetWSByAxis2 ws=new MZ.GetWebService.GetWSByAxis2();

  ws.WSUrl="http://localhost:8989/axis2/services/HelloWorld";

  HelloWorld hello= (HelloWorld)ws.getObject("getName", HelloWorld.class);

  System.out.println(hello.getName("zhangjin"));

  MZ.GetWebService.GetWSByAxis2 ws=new MZ.GetWebService.GetWSByAxis2();

  ws.WSUrl="http://localhost:8989/axis2/services/HelloWorld";

  HelloWorld hello= (HelloWorld)ws.getObject("getName", HelloWorld.class);

  System.out.println(hello.getName("zhangjin"));

  2.使用service.xml發佈webservice,這種方式和直接放在pojo目錄中的POJO類不同。要想將MyService類發佈成Web Service,需要一個services.xml文件,這個文件需要放在META-INF目錄中,該文件的內容如下:

  Xml代碼

  <service name="HelloWorld">

  <description>

  HelloWorld webservice

  </description>

  <parameter name="ServiceClass">

  service.HelloWorld

  </parameter>

  <messageReceivers>

  <messageReceiver mep="http://www.w3.org/2004/08/wsdl/in-out"

  class="org.apache.axis2.rpc.receivers.RPCMessageReceiver" />

  <messageReceiver mep="http://www.w3.org/2004/08/wsdl/in-only"

  class="org.apache.axis2.rpc.receivers.RPCInOnlyMessageReceiver" />

  </messageReceivers>

  </service>

<service name="HelloWorld">

  <description>

  HelloWorld webservice

  </description>

  <parameter name="ServiceClass">

  service.HelloWorld

  </parameter>

  <messageReceivers>

  <messageReceiver mep="http://www.w3.org/2004/08/wsdl/in-out"

  class="org.apache.axis2.rpc.receivers.RPCMessageReceiver" />

  <messageReceiver mep="http://www.w3.org/2004/08/wsdl/in-only"

  class="org.apache.axis2.rpc.receivers.RPCInOnlyMessageReceiver" />

  </messageReceivers>

  </service>

  其中<service>元素用於發佈Web Service,一個<service>元素只能發佈一個WebService類,name屬性表示WebService名,如下面的URL可以獲得這個WebService的WSDL內容:

  http://localhost:8080/axis2/services/myService?wsdl

  除此之外,還有直接可以在其中制定webservice操作方法:可以這樣些service.xml文件

  Java代碼

  <service name="HelloWorld">

  <description>

  HelloWorld service

  </description>

  <parameter name="ServiceClass">

  service.HelloWorld

  </parameter>

  <operation name="getName">

  <messageReceiver class="org.apache.axis2.rpc.receivers.RPCMessageReceiver" />

  </operation>

  <operation name="add">

  <messageReceiver

  class="org.apache.axis2.rpc.receivers.RPCMessageReceiver" />

  </operation>

  </service>

  <service name="HelloWorld">

  <description>

  HelloWorld service

  </description>

  <parameter name="ServiceClass">

  service.HelloWorld

  </parameter>

  <operation name="getName">

  <messageReceiver class="org.apache.axis2.rpc.receivers.RPCMessageReceiver" />

  </operation>

  <operation name="add">

  <messageReceiver

  class="org.apache.axis2.rpc.receivers.RPCMessageReceiver" />

  </operation>

  </service>

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