How to Read values from xml file in java webservice and store them like application variables in Webservice?
Question
I am retrieving some values from xml file in web service. On Each call it goes to read xml file which makes it slow. I need to read them once and use same values on each request. Can I store xml values as application variables like Asp.net? Also please share some best code snippet to read xml file in web-method.
#
Webservice Code:-
import javax.jws.WebService;
import javax.jws.WebMethod;
import javax.jws.WebParam;
/**
*
* @author abc
*/
@WebService(serviceName = "TestXmlReader")
public class TestXmlReader {
/**
* This is a sample web service operation
*/
int counts=1;
@WebMethod(operationName = "hello")
public String hello(@WebParam(name = "name") String txt) {
return "Hello " + txt + " ! "+counts;
// for example Each time I get counts as 1....
//so I need to increment it on each request from client
///I need to read xml file values here and store them as application variables
//so I dont have to read them from xml on each request
}
}
#
Client.jsp
<%--
Document : index
Created on : Feb 1, 2014, 10:23:28 AM
Author : abc
--%>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>JSP Page</title>
</head>
<body>
<%-- start web service invocation --%><hr/>
<%
try {
com.abc.TestXmlWebServiceClient.TestXmlReader_Service service = new com.abc.TestXmlWebServiceClient.TestXmlReader_Service();
com.abc.TestXmlWebServiceClient.TestXmlReader port = service.getTestXmlReaderPort();
// TODO initialize WS operation arguments here
java.lang.String name = "Testing XML Service";
// TODO process result here
java.lang.String result = port.hello(name);
out.println("Result = "+result);
} catch (Exception ex) {
// TODO handle custom exceptions here
}
%>
<%-- end web service invocation --%><hr/>
</body>
</html>
1 answers
solution1
0 ACCPTED 2014-02-01 07:15:53
Both on client and server side you can create request/session/application scoped EJB s - insances of some class whitch would hold the data you need. For more information, as it is not a topic for single post, refer to Java EE specificaton
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