三. Web Service的客户端使用
调用Web Service的方式有三种：
1.Dynamic Invocation Interface(DII)：http://blog.csdn.net/Brookes/archive/2007/03/23/1539021.aspx
2.Dynamic Proxy 动态代理：http://blog.csdn.net/Brookes/archive/2007/03/23/1538400.aspx
3.Stubs 桩：http://blog.csdn.net/Brookes/archive/2007/03/23/1538532.aspx
下面我们采用第一种方式：
1.首先建立一个java web程序：WebServiceSample
2.在工程WebServiceSample的src目录下建立一个包：mypack
3.在mypack下建立一个class，命名为：TestWS，编写代码如下
package mypack;
import javax.xml.namespace.QName;
import org.apache.axis.client.Call;
import org.apache.axis.client.Service;
public class TestWS {
public String getWelcome(String name)
{
try
{
String endpoint = "http://localhost:8080/axis/HelloWorld.jws";
Service service = new Service();
Call call = null;
call = (Call)service.createCall();
call.setOperationName(new QName( "http://localhost:8080/axis/HelloWorld.jws","sayHello"));
call.setTargetEndpointAddress(new java.net.URL(endpoint));
String response = (String) call.invoke(new Object[]{name});
return response;
}
catch (Exception ex)
{
System.out.println(ex);
return null;
}
}
}
import javax.xml.namespace.QName;
import org.apache.axis.client.Call;
import org.apache.axis.client.Service;
public class TestWS {
public String getWelcome(String name)
{
try
{
String endpoint = "http://localhost:8080/axis/HelloWorld.jws";
Service service = new Service();
Call call = null;
call = (Call)service.createCall();
call.setOperationName(new QName( "http://localhost:8080/axis/HelloWorld.jws","sayHello"));
call.setTargetEndpointAddress(new java.net.URL(endpoint));
String response = (String) call.invoke(new Object[]{name});
return response;
}
catch (Exception ex)
{
System.out.println(ex);
return null;
}
}
}
4.修改WebServiceSample的index.jsp代码
<%@ page language="java" import="java.util.*" pageEncoding="GB2312"%>
<%@ page import="mypack.*" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>My JSP 'index.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<%
TestWS Tws = new TestWS();
String r = (String)Tws.getName("feifei");
System.out.println(r);
%>
<br>This is my JSP page. <%=r%> <br>
</body>
</html>
<%@ page import="mypack.*" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>My JSP 'index.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<%
TestWS Tws = new TestWS();
String r = (String)Tws.getName("feifei");
System.out.println(r);
%>
<br>This is my JSP page. <%=r%> <br>
</body>
</html>
5.在浏览器中输入http://localhost:8080/WebServiceSample/
会显示This is my JSP page. Hello,feifei
例子通过TestWS.java来连接HelloWorld的webservice，前台jsp发送请求参数给TestWS.java，并显示返回的结果。