使用Axis2开发WebService－示例

本文介绍如何开发一个基本的WebService，不涉及具体IDE.

首先，编写一个WSDL文件．
hello.wsdl

<?xml version="1.0" encoding="UTF-8"?>
<wsdl:definitions name="hello" targetNamespace="http://www.bisoft.tl/hello/" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" xmlns:tns="http://www.bisoft.tl/hello/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/">
	<wsdl:types>
		<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
			targetNamespace="http://www.bisoft.tl/hello/">
			<xsd:element name="helloRequest">
				<xsd:complexType>
					<xsd:sequence>
						<xsd:element name="msg" type="xsd:string"></xsd:element>
					</xsd:sequence>
				</xsd:complexType>
			</xsd:element>
			<xsd:element name="helloResponse">
				<xsd:complexType>
					<xsd:sequence>
						<xsd:element name="rtn" type="xsd:string"></xsd:element>
					</xsd:sequence>
				</xsd:complexType>
			</xsd:element>
		</xsd:schema>
	</wsdl:types>
	<wsdl:message name="helloRequest">
		<wsdl:part name="helloRequest" element="tns:helloRequest"></wsdl:part>
	</wsdl:message>
	<wsdl:message name="helloResponse">
		<wsdl:part name="helloResponse" element="tns:helloResponse"></wsdl:part>
	</wsdl:message>
	<wsdl:portType name="HelloService">
		<wsdl:operation name="hello">
			<wsdl:input message="tns:helloRequest"></wsdl:input>
			<wsdl:output message="tns:helloResponse"></wsdl:output>
		</wsdl:operation>
	</wsdl:portType>
	<wsdl:binding name="binding1" type="tns:HelloService">
		<soap:binding style="document"
			transport="http://schemas.xmlsoap.org/soap/http" />
		<wsdl:operation name="hello">
			<soap:operation soapAction="http://www.bisoft.tl/hello/hello" />
			<wsdl:input>
				<soap:body use="literal" />
			</wsdl:input>
			<wsdl:output>
				<soap:body use="literal" />
			</wsdl:output>
		</wsdl:operation>
	</wsdl:binding>
	<wsdl:service name="WebService">
		<wsdl:port name="Port1" binding="tns:binding1">
			<soap:address location="http://localhost:8080/services" />
		</wsdl:port>
	</wsdl:service>
</wsdl:definitions>

下面是定义的Web服务的名字，Axi2根据这个生成对应的服务端骨架类WebServiceSkeleton和客户端存根类WebServiceStub．location定义Web服务发布的路径．此处既是http://localhost:8080/services/WebService.

<wsdl:service name="WebService">
		<wsdl:port name="Port1" binding="tns:binding1">
			<soap:address location="http://localhost:8080/services" />
		</wsdl:port>
	</wsdl:service>

从上面可以看出，一个WSDL文件由TYPES, MESSAGE, PORTTYPE, BINDING, PORT, SERVICE 六部分组成．

其次，利用工具类生成服务端骨架类及消息对应的POJO等.
1.将hello.wsdl放入工程的resources目录下
2.创建工具类CodeGenerator

package std.ws.util;

import org.apache.axis2.wsdl.WSDL2Code;

public class CodeGenerator {
	
	public static void main(String[] args) throws Exception {
		WSDL2Code.main
		(
			new String[]
			    {
					"-ss",
					"-sd",
					"-S", "src",
					"-R", "src/META-INF",
					"-ns2p", "http://www.bisoft.tl/hello=tl.bisoft.hello",
					"-uri", "resources/hello.wsdl" 			
			    }
		);
		System.out.println("Done!");
	}

}

运行工具类，刷新工程，会在src目录下生成服务端骨架类及消息对应的POJO及资源文件．


注意引入工程所依赖的包，推荐使用Maven.

最后，部署服务端：
在工程内导出JAR包，对应的lib中的JAR文件，资源文件．




将导出的JAR包重命名为WebService.aar. 这是的名字注意与WSDL中定义的相同.

下载Aix2 Server,
http://219.239.26.9/download/1615051/1709442/2/zip/68/224/1257570511428_224/axis2-1.5.1-bin.zip


解压并将WebService.aar部署到axis2-1.5.1\repository\services\目录下,启动Aix2 Server.运行axis2-1.5.1\bin\axis2server.bat.

打开浏览器,
http://localhost:8080/axis2/services
显示如下:


服务端已经成功部署.


接下来是客户端.
1. 在另一个工程中,创建resources目录,并将服务端的hello.wsdl复制过来.创建工具类生成客户端存根.

package std.ws.client.util;

import org.apache.axis2.wsdl.WSDL2Code;

public class CodeGenerator {
	public static void main(String[] args) throws Exception {
		WSDL2Code.main(new String[] { 
				"-S", "src", 
				"-R", "src/META-INF", 
				"-ns2p", "http://www.bisoft.tl/hello=tl.bisoft.hello", 
				"-uri", "resources/hello.wsdl" });
		System.out.println("Done!");
	}
}

2. 编写测试类

package std.ws.client;

import java.rmi.RemoteException;

import tl.bisoft.www.hello.WebServiceStub;
import tl.bisoft.www.hello.WebServiceStub.HelloRequest;
import tl.bisoft.www.hello.WebServiceStub.HelloResponse;

public class WSClient {
	public static void main(String[] args) throws RemoteException {
		String endpoint = "http://localhost:8080/axis2/services/WebService";
		WebServiceStub stub = new WebServiceStub(endpoint);

		HelloRequest request = new HelloRequest();
		request.setMsg("hello, bisoft!");

		HelloResponse reponse = new HelloResponse();
		reponse = stub.hello(request);
		String rtn = reponse.getRtn();
		System.out.println(rtn);
	}
}

3.运行测试类,在控制台输出测试结果为:
hello, bisoft!

4.去Aisx2服务端也会输出:
server recv: hello, bisoft!


Axis2服务端默认会生成异步与同步方法,因此异步处理只修改客户端即可.
异步处理客户端:

public class WSClient {
	public static void main(String[] args) throws IOException {
		String endpoint = "http://localhost:8080/axis2/services/WebService";
		WebServiceStub stub = new WebServiceStub(endpoint);

		HelloRequest request = new HelloRequest();
		request.setMsg("hello, bisoft!");

		WebServiceCallbackHandler callback = new WebServiceCallbackHandler() {

			public void receiveResulthello(HelloResponse response) {
				String rtn = response.getRtn();
				System.out.println("async message!");
				System.out.println(rtn);
			}
		};

		stub.starthello(request, callback);

		System.out.println("Please enter to exit!");

		new BufferedReader(new InputStreamReader(System.in)).readLine();

	}
}