利用 axis 访问webservice有两种实现方式：
1. parse -> call -> return obj -> extract
2. generate stub by wsdl2java, then uses the stub to access service.
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下面介绍用第2种方式做一个web project：
1. install myeclipse (myeclipse 5.0 + eclipse 3.2)
2. create a web project named axis
3. create a generator to convert wsdl to stubs
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package generator;
import java.util.List;
import org.apache.axis.utils.CLArgsParser;
import org.apache.axis.utils.CLOption;
import org.apache.axis.wsdl.WSDL2Java;
public class wsdl2java {
public static void main(String args[]) {
args = new String[] { "http://www.deeptraining.com/webservices/weather.asmx?WSDL" };
new MyWSDL2Java().generateWSDL(args);
}
static class MyWSDL2Java extends WSDL2Java {
public void generateWSDL(String[] args) {
org.apache.axis.utils.CLArgsParser argsParser = new CLArgsParser(
args, org.apache.axis.wsdl.WSDL2Java.options);
List<CLOption> clOptions = argsParser.getArguments();
for (int i = 0; i < clOptions.size(); i++) {
parseOption(clOptions.get(i));
}
validateOptions();
try {
parser.run(wsdlURI);
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
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run above program, stub will be generted. they are all in the package com.litwinconsulting.webservices
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4. create business classes
package business;
import java.rmi.RemoteException;
import javax.xml.rpc.ServiceException;
import com.litwinconsulting.webservices.WeatherLocator;
import com.litwinconsulting.webservices.WeatherSoap;
/**
* call stub to communicate with weather service.
* @author tychu
*/
public class WSWeather {
public String getWeatherByCity(String city) throws ServiceException,
RemoteException {
WeatherLocator locator = new WeatherLocator();
WeatherSoap service = locator.getWeatherSoap12();
return service.getWeather(city);
}
}
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package business;
public class ManagefacedImp implements IManageFaced {
// invoked to create implementation object.
public WSWeather getWeatherManage() {
return new WSWeather();
}
}
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package business;
/**
* all interface of providing services
* @author tychu
*/
public interface IManageFaced {
// get weather service
public WSWeather getWeatherManage();
}
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5. create filter and servlet
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package servlet;
import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import org.apache.log4j.Logger;
/**
* uses filter to avoid to specify charset in every servlets
* @author tychu
*/
public class CharacterFilter implements Filter {
protected String encoding = null;
protected FilterConfig filterConfig = null;
protected boolean ignore = true;
public void init(FilterConfig fConfig) throws ServletException {
this.filterConfig = fConfig;
this.encoding = fConfig.getInitParameter("encoding");
String value = fConfig.getInitParameter("ignore");
if (value == null || "true".equalsIgnoreCase(value) || "yes".equalsIgnoreCase(value))
this.ignore = true;
else
this.ignore = false;
}
public void doFilter(ServletRequest request, ServletResponse response,
FilterChain chain) throws IOException, ServletException {
Logger log = Logger.getLogger(CharacterFilter.class);
if (ignore || (request.getCharacterEncoding() == null)) {
if (encoding != null) {
request.setCharacterEncoding(encoding);
log.info("filter used!!!");
}
}
response.setContentType("text/html; charset=" + encoding);
chain.doFilter(request, response);
}
public void destroy() {
// do nothing
}
}
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package servlet;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.xml.rpc.ServiceException;
import org.apache.log4j.Logger;
import business.ManagefacedImp;
import business.WSWeather;
/**
* servlet invokes bussiness interface
* @author tychu
*/
public class InvokeWS extends HttpServlet {
private static final long serialVersionUID = 1646431374969L;
Logger logger = Logger.getLogger(InvokeWS.class.getName());
public void doPost(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
// PropertyConfigurator.configure("log4j.properties");
WSWeather wsw = new ManagefacedImp().getWeatherManage();
PrintWriter pw = resp.getWriter();
String city = req.getParameter("city");
// if no filter set, you will get some unrecognized characters here
// logger.info("city:" + city);
if (city != null && city.length() != 0) {
String weatherinfo;
try {
weatherinfo = wsw.getWeatherByCity(city);
pw.println("<font size='2' color='blue'>" + weatherinfo
+ "</font><br>");
} catch (ServiceException e) {
e.printStackTrace();
}
} else {
pw.println("<font size='2' color='blue'>"
+ "the specified city not exists, please contact:********" + "</font><br>");
}
}
public void doGet(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
doGet(req, resp);
}
}
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6. add servlet and filter to web.xml
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<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<filter>
<filter-name>SetCharacterEncodingFilter</filter-name>
<filter-class>
servlet.CharacterFilter
</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>GBK</param-value>
</init-param>
<init-param>
<param-name>ignore</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>SetCharacterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<servlet>
<servlet-name>InvokeWS</servlet-name>
<servlet-class>servlet.InvokeWS</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>InvokeWS</servlet-name>
<url-pattern>/invoke</url-pattern>
</servlet-mapping>
</web-app>
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7. web pages
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index.htm
<html>
<head>
<title>WebService weather</title>
</head>
<frameset rows="5%,*%" Borders="No" border="0">
<frame src="top.htm" noresize="false" name="top" frameborder="0">
<frame src="bottom.htm" noresize="true" name="bottom" frameborder="0">
</frameset>
</html>
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top.htm
<html>
<head>
<title>weather</title>
<meta http-equiv="content-type" content="text/html; charset=gb2312">
</head>
<body>
<form name="form1" method="post" action="invoke" target="bottom">
<input type="text" name="city" id="city">
<input type="submit" name="sub" value="GO">
</form>
</body>
</html>
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bottom.htm
<head>
<title>weather</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<style type="text/css"/>
</head>
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8. deploy and run
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at location: http://localhost:8080/axis/ ?and input any thing, you can get a result returned from servers.
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