j2me 调用 webservice

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kxml(http://kxml.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。

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2.1 客户端源代码

2.1.1 WSClientMIDlet.java

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package com.jagie.j2me.ws; import javax.microedition.midlet.*; import javax.microedition.lcdui.*; public class WSClientMIDlet extends MIDlet{ static WSClientMIDlet instance; public WSClientMIDlet() { instance = this; } public void startApp() { Display display=Display.getDispla(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; } }

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2.1.2?DisplayForm.java

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package com.jagie.j2me.ws; import javax.microedition.lcdui.*; 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); } }

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2.1.3?StringProcessorStub.java

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?package com.jagie.j2me.ws; import org.ksoap.*; import org.ksoap.transport.HttpTransport; public class StringProcessorStub { public StringProcessorStub() { } public String process(String name) { String result = null; try { SoapObject rpc = new SoapObje("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; } }

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测试客户端

现在，试着在你的ide里运行WSClientMIDlet，如果调用成功，则出现以下画面：

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