關(guān)鍵字: webservice
1. Introduction
This document will outline the process of developing a JAX-WS web service and deploying it using MyEclipse 6.5 to the internal MyEclipse Tomcat server. The web service used in this tutorial will be a very simple calculator service that provides add, subtract, multiply and divide operations to the caller.
MyEclipse also supports developing web services using the existing XFire framework from previous MyEclipse releases. For folks needing to develop and deploy WebSphere JAX-RPC or WebSphere JAX-WS web services, please take a look at our MyEclipse Blue Edition of the MyEclipse IDE.
Additional resources covering web service creation using JAX-RPC, JAX-WS or XFire are included in the Resources section of this document.
2. System Requirements
This tutorial was created with MyEclipse 6.5. If you are using another version of MyEclipse (possibly newer), most of these screens and instructions should still be very similar.
If you are using a newer version of MyEclipse and notice portions of this tutorial looking different than the screens you are seeing, please let us know and we will make sure to resolve any inconsistencies.
3.新建一個工程
開始我們新建一個Web Service Project工程File->New->Web Service Project(Optional Maven Support)
Note:A JAX-WS web service can also be generated in any existing Java EE 5 web project.
我們給這個工程取名為WebServiceProject.注意JAX-WS支持只在javaEE5或更高版本的工程中是可行的。如果你需要使用低版本的工程類型(java1.4或者1.3),那么只能使用XFire Web Service代替JAX-WS。

這里我們使用上面的JAX—WS。
4.創(chuàng)建服務(wù)類
服務(wù)類就是一個普通的java類,負(fù)責(zé)提供我們想要發(fā)布的執(zhí)行方法。這里我們寫一個簡單的計(jì)算器類,實(shí)現(xiàn)幾個典型的計(jì)算器應(yīng)用方法,如加減乘除。
首先我們先建一個包,WebServiceProject->src->new->package,取名com.myeclipseide.ws

讓后我們在這個包下建一個類,Calculator.java.

根據(jù)上面提到的,這個計(jì)算器類實(shí)現(xiàn)計(jì)算器的加減乘除算法,簡單實(shí)現(xiàn):
Java代碼
package com.myeclipseide.ws;


public class Calculator
{

public int add(int a, int b)
{
return (a + b);
}


public int subtract(int a, int b)
{
return (a - b);
}


public int multiply(int a, int b)
{
return (a * b);
}


public int divide(int a, int b)
{
return (a / b);
}
}
可以看出,這個類中的方法是非常簡單的,沒有用到特殊的注釋還有接口,父類之類的東西。
5.創(chuàng)建一個Web Service
在上面的工具條中點(diǎn)擊新建Web Service

Note:如果沒有的話可以File->New->others->Myeclipse->WebService->webService
點(diǎn)擊之后出現(xiàn)的屏幕,在Strategy中選擇Bottom-up scenario,因?yàn)槲覀円呀?jīng)建立好了Calculator類而且想根據(jù)它建立JAX-WS服務(wù)。

下面是創(chuàng)建的最后一個屏幕,你需要選擇提供webService方法的javaBean,在我們這個例子中就是我們已經(jīng)建立好的Calculator類。

填好之后,Myeclipse會自動幫我們填滿其他的項(xiàng),Select Generate WSDL in project and hit Finish.

點(diǎn)擊完成之后,Myeclipse會自動生成CalculatorDelegate代理類,還有一些必須的JAX-WS描述符,而且會自動在服務(wù)器目錄下的web.xml中配置WebService的一些mappings,方便將webService部署到服務(wù)器中。

到此web service已經(jīng)建立好了,我們開始部署它然后進(jìn)行測試。
6.部署和測試webService。
這里我們不使用用Myeclipse自帶的tomcat服務(wù)器,使用自己應(yīng)經(jīng)在電腦中部署好的tomcat5.5。
在server面板中右擊,選擇configure

部署自己的tomcat注意選擇jdk要跟項(xiàng)目中的相同。

現(xiàn)在要向工程中導(dǎo)入JAX-WS的jar包
在項(xiàng)目名稱上右擊->properties->Add Library->Myeclipse Libraries->最后面的兩個。


點(diǎn)擊完成,導(dǎo)入成功。
Note:Myeclipse自帶的tomcat中有自帶的這兩個jar包,可以不用導(dǎo)入。
6.1部署
在部署好的tomcat服務(wù)器上右擊選擇Add Deployment


點(diǎn)擊完成。
6.2測試
運(yùn)行tomcat服務(wù)器,在工具欄中點(diǎn)擊launch WebService Explorer

打開后,點(diǎn)擊右上角的WSDL視圖,可以看到下面的屏幕

在WSDL URL中填寫路徑:http://localhost:8888/WebServiceProject/CalculatorPort?WSDL
解釋下路徑組成:
http://localhost:8888/是服務(wù)器的路徑,我的端口號是8888,可以根據(jù)自己的更改,一般都是8080。
/WebServiceProject = We know by default the Web Context-root that is used to deploy(部署) web projects matches the name of the projects. (因?yàn)槲覀儧]有為這個工程自定義我們的Web Context-root,所以他就是這個工程的名字)
/CalculatorPort = As we saw from the last screenshot in Section #5, when our JAX-WS web service was generated, it was bound using a servlet-mapping in the web.xml file to the /CalculatorPort path.
XML代碼
<servlet>
<description>JAX-WS endpoint - CalculatorService</description>
<display-name>CalculatorService</display-name>
<servlet-name>CalculatorService</servlet-name>
<servlet-class>
com.sun.xml.ws.transport.http.servlet.WSServlet
</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>CalculatorService</servlet-name>
<url-pattern>/CalculatorPort</url-pattern>
</servlet-mapping>
<servlet>
<description>JAX-WS endpoint - CalculatorService</description>
<display-name>CalculatorService</display-name>
<servlet-name>CalculatorService</servlet-name>
<servlet-class>
com.sun.xml.ws.transport.http.servlet.WSServlet
</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>CalculatorService</servlet-name>
<url-pattern>/CalculatorPort</url-pattern>
</servlet-mapping>
WSDL = This is a universal query string argument that can be added to the end of any web service which will tell the web service to return it's full WSDL to the caller. In this case, the WSDL is returned to our Web Services Explorer tool which loads it up, and displays the web services exposed operations to us.
弄清楚之后,我們開始測試,比如我們選擇add方法:
填寫args,點(diǎn)擊go,在status中就會顯示結(jié)果。

結(jié)果是正確的。
7.創(chuàng)建Webservice Client
現(xiàn)在我們已經(jīng)部署好Webservice,而且應(yīng)經(jīng)測試過了,那我們新建一個Webservice client,來調(diào)用Webservice提供的方法。
7.1新建一個java project,給他取個名字。比如我們叫它ClientofWebService

在工具條中點(diǎn)擊new Web Service Client

然后按照以下步驟操作:

The last step of the web service client creation is to specify either a WSDL File or a WSDL URL for the wizard to retrieve the web service WSDL from. In our case we are using the URL and generate the client into the new package com.myeclipseide.ws.client:
http://localhost:8888/WebServiceProject/CalculatorPort?WSDL

點(diǎn)擊Next知道完成。
可以看到在新建的java project ClientofWebService中,src文件夾下產(chǎn)生了許多的文件,根據(jù)名稱我們大體可以了解其意思,可以打開看一下源代碼,其實(shí)不難理解。比如add文件,就是Calculator類中add方法的兩個參數(shù)的get和set方法。其他類似。
我們在文件夾下見一個類test.java寫一個main函數(shù)測試
Java代碼

public static void main(String[] args)
{

/**//* Create the service instance */
CalculatorService service = new CalculatorService();
CalculatorDelegate delegate = service.getCalculatorPort();

/**//* Using the web service, perform the 4 calculations */
System.out.println( "1. 3+7=" + delegate.add(3, 7));
System.out.println( "2. 12-2=" + delegate.subtract(12, 2));
System.out.println( "3. 9*9=" + delegate.multiply(9, 9));
System.out.println( "4. 40/2=" + delegate.divide(40, 2));
}
運(yùn)行得到如下結(jié)果:
1. 3+7=10
2. 12-2=10
3. 9*9=81
4. 40/2=20
測試完成。
本文來自CSDN博客,轉(zhuǎn)載請標(biāo)明出處:http://blog.csdn.net/foart/archive/2009/06/21/4287515.aspx
posted on 2009-10-17 22:50
潯陽江頭夜送客 閱讀(3015)
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WebService