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Improving the controller – HP Integrity NonStop H-Series User Manual

Page 125

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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:jee="http://www.springframework.org/schema/jee"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-2.5.xsd
http://www.springframework.org/schema/jee
http://www.springframework.org/schema/jee/spring-jee-2.5.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">


insert


com.hp.empinfo.domain.Employee


emp


class="org.springframework.web.servlet.view.InternalResourceViewResolver">




Improving the Controller

Modify the

EmployeeController.java

file to perform the employee database transactions.

To modify the

EmployeeController.java

file, complete the following steps:

1.

Add a reference to the

EmployeeDao.java

in the

EmployeeController.java

controller

class as shown below:

private EmployeeDao empdao;

2.

Replace the

onSubmit

method with the

handleRequest

method.

This is done to:

1.

Recognize the inputs from the View

2.

Pass the recognized inputs to the Model

3.

Pass the output back to the View

Before modification:

public ModelAndView handleRequest(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {

String now = (new Date()).toString();
logger.info("Returning view with " + now);
return new ModelAndView("insert", "now", now);
}

After modification:

public ModelAndView onSubmit(Object command) throws ServletException,
SQLException {
WebApplicationContext wac = WebApplicationContextUtils
.getRequiredWebApplicationContext(getServletContext());

empdao = (EmployeeDao) wac.getBean("empdao");
int empid = ((Employee) command).getEmpid();
String firstname = ((Employee) command).getFirstname();
String lastname = ((Employee) command).getLastname();

Overview of EmpInfo

125

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