J2ME与WebService-KSOAP快速上手

王朝java/jsp·作者佚名  2008-05-19
窄屏简体版  字體: |||超大  

摘要

本文用一个简明的例子,阐述了如何在手机上用KSOAP API来访问本地服务器上的Web Service。并且给出了详细的操作步骤和全部的Server,Client源代码。

1. 服务端

这次要发布的web service非常简单。它的功能是把从客户端传入的字符串中的小写字母转变成大写字母,再返回给客户端。Soap 服务器采用apache的AXIS(可以从http://ws.apache.org/axis/下载),应用服务器可以选用各种servlet 容器,我这里采用的是weblogic。

1.1 实现类的源代码

// StringProcessor.java

package com.jagie.j2me.ws;

public class StringProcessor {

public StringProcessor() {

}

public String process(String name){

return name.toUpperCase();

}

}

1.2 发布步骤

1.准备一个目录作为web application的发布目录,我这里的这个目录叫jagiews,这个目录的全路径中最好不要有空格和中文。我的发布目录结构如下:

2.编译StringProcessor.java,把生成的StringProcessor.class置于: \jagiews\WEB-INF\classes\com\jagie\j2me\ws目录下。

3.在jagiews\WEB-INF\lib 文件夹中置入以下axis服务器需要的jar文件

axis.jar,axis-ant.jar,commons-discovery.jar,commons-logging.jar,jaxrpc.jar,log4j-1.2.8.jar,saaj.jar ,wsdl4j.jar。这些文件可以在http://ws.apache.org/axis/下载,如图所示:

4.在jagiews\WEB-INF目录下增加2个发布描述文件:server-config.wsdd,web.xml。

#server-config.wsdd

<?xml version="1.0" encoding="UTF-8"?

<deployment xmlns="http://xml.apache.org/axis/wsdd/"

xmlns:java="http://xml.apache.org/axis/wsdd/providers/java"

<globalConfiguration

<parameter name="adminPassword" value="admin"/

<parameter name="attachments.Directory" value="C:\Program Files

\Apache Tomcat 4.0\webapps\axis\WEB-INF\attachments"/

<parameter name="attachments.implementation"

value="org.apache.axis.attachments.AttachmentsImpl"/

<parameter name="sendXsiTypes" value="true"/

<parameter name="sendMultiRefs" value="true"/

<parameter name="sendXMLDeclaration" value="true"/

<parameter name="axis.sendMinimizedElements" value="true"/

<requestFlow

<handler type="java:org.apache.axis.handlers.JWSHandler"

<parameter name="scope" value="session"/

</handler

<handler type="java:org.apache.axis.handlers.JWSHandler"

<parameter name="scope" value="request"/

<parameter name="extension" value=".jwr"/

</handler

</requestFlow

</globalConfiguration

<handler name="LocalResponder"

type="java:org.apache.axis.transport.local.LocalResponder"/

<handler name="URLMapper"

type="java:org.apache.axis.handlers.http.URLMapper"/

<handler name="RPCDispatcher"

type="java:org.apache.axis.providers.java.RPCProvider"/

<handler name="Authenticate"

type="java:org.apache.axis.handlers.SimpleAuthenticationHandler"/

<handler name="MsgDispatcher"

type="java:org.apache.axis.providers.java.MsgProvider"/

<service name="AdminService" provider="java:MSG"

<parameter name="allowedMethods" value="AdminService"/

<parameter name="enableRemoteAdmin" value="false"/

<parameter name="className" value="org.apache.axis.utils.Admin"/

<namespacehttp://xml.apache.org/axis/wsdd/</namespace

</service

<service name="Version" provider="java:RPC"

<parameter name="allowedMethods" value="getVersion"/

<parameter name="className" value="org.apache.axis.Version"/

</service

<!--

your service

begin--

<service name="StringProcess" provider="java:RPC"

<parameter name="allowedMethods" value="process"/

<parameter name="className"

value="com.jagie.j2me.ws.StringProcessor"/

</service

<!-- your service

end --

<transport name="http"

<requestFlow

<handler type="URLMapper"/

<handler type="java:org.apache.axis.handlers.http.HTTPAuthHandler"/

</requestFlow

</transport

<transport name="local"

<responseFlow

<handler type="java:org.apache.axis.transport.local.LocalResponder"/

</responseFlow

</transport

</deployment

# web.xml

<?xml version="1.0" encoding="ISO-8859-1"?

<!DOCTYPE web-app

PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"

"http://java.sun.com/j2ee/dtds/web-app_2.2.dtd"

<web-app

<display-nameApache-Axis</display-name

<servlet

<servlet-nameAxisServlet</servlet-name

<display-nameApache-Axis Servlet</display-name

<servlet-class

org.apache.axis.transport.http.AxisServlet

</servlet-class

</servlet

<servlet

<servlet-nameAdminServlet</servlet-name

<display-nameAxis Admin Servlet</display-name

<servlet-class

org.apache.axis.transport.http.AdminServlet

</servlet-class

<load-on-startup100</load-on-startup

</servlet

<servlet

<servlet-nameSOAPMonitorService</servlet-name

<display-nameSOAPMonitorService</display-name

<servlet-class

org.apache.axis.monitor.SOAPMonitorService

</servlet-class

<init-param

<param-nameSOAPMonitorPort</param-name

<param-value5001</param-value

</init-param

<load-on-startup100</load-on-startup

</servlet

<servlet-mapping

<servlet-nameAxisServlet</servlet-name

<url-pattern/servlet/AxisServlet</url-pattern

</servlet-mapping

<servlet-mapping

<servlet-nameAxisServlet</servlet-name

<url-pattern*.jws</url-pattern

</servlet-mapping

<servlet-mapping

<servlet-nameAxisServlet</servlet-name

<url-pattern/services/*</url-pattern

</servlet-mapping

<servlet-mapping

<servlet-nameSOAPMonitorService</servlet-name

<url-pattern/SOAPMonitor</url-pattern

</servlet-mapping

<!-- uncomment this if you want the admin servlet --

<!--

<servlet-mapping

<servlet-nameAdminServlet</servlet-name

<url-pattern/servlet/AdminServlet</url-pattern

</servlet-mapping

--

<!-- currently the W3C havent settled on a media type for WSDL;

http://www.w3.org/TR/2003/WD-wsdl12-20030303/#ietf-draft

for now we go with the basic 'it's XML' response --

<mime-mapping

<extensionwsdl</extension

<mime-typetext/xml</mime-type

</mime-mapping

<mime-mapping

<extensionxsd</extension

<mime-typetext/xml</mime-type

</mime-mapping

</web-app

5.开启你的application server,把目录jagiews发布为一个名叫jagiews的web application。

6.测试:打开浏览器,输入网址(这里使用的是weblogic,其他的服务器请酌情修改):

http://localhost:7001/jagiews/services/StringProcess?method=process&name=qqqq,

如果浏览器能在返回的xml文档中显示字符串"QQQQ",恭喜你,你的web service发布成功了。如果发布不成功,请按以上发布步骤检查一下。

2. 客户端

客户端自然是用MIDlet了,不过用什么方式来访问web service呢?其实有3种访问方

 
 
 
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