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j2me与web service-ksoap的罗曼史
j2me与web service-ksoap的罗曼史----j2me与web service-ksoap的快速上手 作者：cleverpig 版权声明：可以任意转载，转载时请务必以超链接形式标明文章原始出处和作者信息及本声明
原文地址:
http://www.matrix.org.cn/resource/article/43/43662_
j2me_ksoap.
html关键词：
j2me soap
webservice
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。
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"/>
<namespace>
http://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-name>apache-axis</display-name>
<servlet>
<servlet-name>axisservlet</servlet-name>
<display-name>apache-axis
servlet</display-name>
<servlet-class>
org.apache.axis.transport.http.axisservlet
</servlet-class>
</servlet>
<servlet>
<servlet-name>adminservlet</servlet-name>
<display-name>axis admin servlet</display-name>
<servlet-class>
org.apache.axis.transport.http.adminservlet
</servlet-class>
<load-on-startup>100</load-on-startup>
</servlet>
<servlet>
<servlet-name>soapmonitorservice</servlet-name>
<display-name>soapmonitorservice</display-name>
<servlet-class>
org.apache.axis.monitor.soapmonitorservice
</servlet-class>
<init-param>
<param-name>soapmonitorport</param-name>
<param-value>5001</param-value>
</init-param>
<load-on-startup>100</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>axisservlet</servlet-name>
<url-pattern>/servlet/axisservlet</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>axisservlet</servlet-name>
<url-pattern>*.jws</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>axisservlet</servlet-name>
<url-pattern>/services/*</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>soapmonitorservice</servlet-name>
<url-pattern>/soapmonitor</url-pattern>
</servlet-mapping>
<!-- uncomment this if you want the admin servlet -->
<!--
<servlet-mapping>
<servlet-name>adminservlet</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>
<extension>wsdl</extension>
<mime-type>text/xml</mime-type>
</mime-mapping>
<mime-mapping>
<extension>xsd</extension>
<mime-type>text/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种访问方式
直接用httpconnection访问 http://localhost:7001/jagiews/services/stringprocess?method=process&name=qqqq，得到
xml的返回数据，然后用k
xml(http://k
xml.enhydra.org/)解析，得到返回值。
如果你的手机支持midp2.0的话，可以考虑使用
jsr172。
用ksoap api。
这里讲述第三种方式。使用之前，你需要从 http://ksoap.enhydra.org/software/downloads/index.
html下载稳定的ksoap包，置于你的classpath中。
2.1 客户端源代码 2.1.1 wsclientmidlet.java
package com.jagie.j2me.ws;
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
/**
* <p>title: </p>
* <p>description: </p>
* <p>copyright: copyright (c)
2004</p>
* <p>company: </p>
* @author not attributable
* @version 1.0
*/
public class wsclientmidlet
extends midlet
{
static wsclientmidlet instance;
public wsclientmidlet()
{
instance = this;
}
public void startapp()
{
display display=
display.getdisplay(this);
displayform displayable =
new displayform();
display.setcurrent(displayable);
}
public void pauseapp()
{
}
public void destroyapp
(boolean unconditional)
{
}
public static void quitapp()
{
instance.destroyapp(true);
instance.notifydestroyed();
instance = null;
}
}
2.1.2 displayform.java
package com.jagie.j2me.ws;
import javax.microedition.lcdui.*;
/**
* <p>title: </p>
* <p>description: </p>
* <p>copyright: copyright (c)
2004</p>
* <p>company: </p>
* @author not attributable
* @version 1.0
*/
public class displayform
extends form
implements commandlistener,
runnable
{
private textfield textfield1;
private thread t;
public displayform()
{
super("字符转换webservice测试");
try
{
jbinit();
}
catch (exception e)
{
e.printstacktrace();
}
}
private void jbinit()
throws exception
{
// set up this displayable
to listen to command events
textfield1 = new textfield
("", "", 15, textfield.any);
this.setcommandlistener(this);
textfield1.setlabel
("待处理的字符串是：");
textfield1.setconstraints
(textfield.any);
textfield1.setinitialinputmode
("tester");
setcommandlistener(this);
// add the exit command
addcommand(new command
("exit", command.exit, 1));
addcommand(new command
("process", command.ok, 1));
this.append(textfield1);
}
public void commandaction
(command command,
displayable displayable)
{
if (command.getcommandtype
() == command.exit)
{
wsclientmidlet.quitapp();
}
else if (command.getcommandtype()
== command.ok)
{
t = new thread(this);
t.start();
}
}
public void run()
{
string s1 =
textfield1.getstring();
string s2 =
new stringprocessorstub().process(s1);
stringitem resultitem =
new stringitem("处理后的字符串是:", s2);
this.append(resultitem);
}
}
2.1.3 stringprocessorstub.java
package com.jagie.j2me.ws;
import org.ksoap.*;
import org.ksoap.transport.httptransport;
/**
* <p>title: </p>
* <p>description: </p>
* <p>copyright: copyright (c) 2004</p>
* <p>company: </p>
* @author not attributable
* @version 1.0
*/
public class stringprocessorstub
{
public stringprocessorstub()
{
}
public string process(string name)
{
string result = null;
try
{
soapobject rpc =
new soapobject
("http://localhost:
7001/jagiews/services/stringprocess",
"process");
rpc.addproperty("name", name);
httptransport ht =
new httptransport
("http://localhost:7001/
jagiews/services/stringprocess",
"");
result = (string) ht.call(rpc);
}
catch (exception e) {
e.printstacktrace();
}
return result;
}
}
总结 有了ksoap，手机上调用
web service就很容易了。不过要注意的是，使用网络连接这种费时操作的时候，一定要单独开
线程进行，不要直接写在commandaction()方法里，否则出现画面被锁住的情况。
