Hi, everyone! :)
I've worked with Google App Engine for a couple months. I've done web
app, hosted it on my app engine account using JPA. After that
developing I wanted to create App Engine web service application. I've
looked some technologies for creating web services app for a long time
and finally I've found it! There is http://code.google.com/p/webserviceservlet/.
I downloaded UserGuide.pdf from this link. There is an example in this
user guide. I made application by its tutorial. Webserviceservlet
doesn't support JAX-WS but it supports JAXB framework. In example the
simple way is described. There is one model entity with JAXB
annotations - Employee:
@XmlRootElement
@XmlType(name="Employee")
public class Employee {
String fname;
public Employee(){
}
public void setFirstName(String value){
this.fname = value;
}
public String getFirstName(){
return this.fname;
}
}
My web.xml is the same from tutorial example.
Then I've written web method like in the tutorial:
public class MyWebService {
public MyWebService(){
}
public String addEmployee(Employee emp){
return "ok: emplyee added";
}
}
After this need to create xml schema from class Employee. Created
schema is an input parameter to web services servlet, described in
web.xml
I launched app and that's great! It's worked good.
But it was easy.
I've wanted to modify my web services with input List<Employee>
instead of single instance of Employee like tutorial.
Modifyed method:
public class MyWebService {
public MyWebService(){
}
public String addEmployee(List<Employee> empList){
return "ok: emplyee added";
}
}
java.util.List isn't marked with JAXB annotations, so I've created a
new class Employees that contains List<Employee>:
@XmlRootElement(namespace = "ws.employee.com")
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "Employees", namespace = "ws.employee.com")
public class Employees {
/** */
private List<Employee> employeeList = new ArrayList<Employee>();
public List<Employee> getEmployeeList() {
return employeeList;
}
public void setEmployeeList(List<Employee> employeeList) {
this.employeeList = employeeList;
}
}
New Employee class is shown now:
@XmlRootElement(namespace = "ws.employee.com")
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "Employee", namespace = "ws.jevera.com")
public class Employee {
/** */
private String name;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
And finally changed web method addEmployee
public String addEmployee(Employees emp){
return "ok: emplyee added";
}
Schema created OK. And wsdl was created also good. But during making a
client through wsimport utilities i catched error - some type in xml
schema could not de found.
Who worked with lists in Google App Engine Web Services through
http://code.google.com/p/webserviceservlet/ please HELP ME. I've tryed
all ways to success but it was failed. This task is very important for
me.
Thank you :)
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