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Spring3 Getting Started 3 |
5: /classes/com/company/springapp/LoginCommand
package com.company.springapp;
import java.io.Serializable;
public class LoginCommand implements Serializable
{
private String userId;
private String password;
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getUserId() {
return userId;
}
public void setUserId(String userId) {
this.userId = userId;
}
}
6: /classes/com/company/springapp/LoginFieldValidator
package com.company.springapp;
import org.springframework.validation.Errors;
import org.springframework.validation.ValidationUtils;
import org.springframework.validation.Validator;
public class LoginFieldValidator implements Validator
{
public boolean supports(Class candidate)
{
return LoginCommand.class.isAssignableFrom(candidate);
}
public void validate(Object obj, Errors errors)
{
ValidationUtils.rejectIfEmptyOrWhitespace(errors, "userId", "required", "Field is required.");
ValidationUtils.rejectIfEmptyOrWhitespace(errors, "password", "required", "Field is required.");
}
}
7: /classes/com/company/springapp/LoginController
package com.company.springapp;
import org.apache.commons.beanutils.BeanUtils;
import org.apache.log4j.Logger;
import org.springframework.stereotype.Controller;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
@Controller
@RequestMapping(value="/login")
public class LoginController
{
private static final Logger logger = Logger.getLogger(LoginController.class);
@RequestMapping(value="/form")
protected ModelAndView loginformHandler(@ModelAttribute("command") LoginCommand command)
throws Exception
{
logger.info("start");
ModelAndView mav = new ModelAndView();
try
{
mav.setViewName("login");
//set to blank
command.setUserId("");
command.setPassword("");
mav.addObject(command);
}
catch (Exception e)
{
e.printStackTrace();
}
return mav;
}
@RequestMapping(value="/validate")
protected ModelAndView validateloginformHandler(@ModelAttribute("command") LoginCommand command,BindingResult result)
throws Exception
{
logger.info("start::"+ BeanUtils.describe(command));
ModelAndView mav = new ModelAndView();
try
{
new LoginFieldValidator().validate(command, result);
if (result.hasErrors())
{
mav.setViewName("login");
}
else
{
mav.setViewName("loginSuccess");
}
}
catch (Exception e)
{
e.printStackTrace();
}
return mav;
}
}
see @Controller, @RequestMapping(value="/login"), @RequestMapping(value="/form"), @RequestMapping(value="/validate")
8A: /WEB-INF/jsp/login.jsp
<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form" %>
<html>
<head>
<title>/WEB-INF/jsp/login.jsp</title>
</head>
<body>
<form:form commandName="command" action="/Spring3App/login/validate">
<table width="100%" border="0" cellpadding="0" cellspacing="0"
bgcolor="#FFFFFF">
<tr>
<td width='7%'>User Id:</td>
<td align='left'><form:input path="userId" />
<form:errors path="userId" /></td>
</tr>
<tr>
<td width='7%'>Password:</td>
<td align='left'><form:input path="password" />
<form:errors path="password" /></td>
</tr>
<tr>
<td><input type="submit" value="Login" name="Login" /></td>
</tr>
</table>
</form:form>
</body>
</html>
8B: /WEB-INF/jsp/loginSuccess.jsp
<%@ page import="java.util.ArrayList"
errorPage="/WEB-INF/jsp/ErrorPage.jsp"%>
<%
String ctx = request.getContextPath();
%>
<html>
<head>
<link href="<%=ctx%>/theme/Master.css" rel="stylesheet" type="text/css"></link>
<title>/WEB-INF/jsp/loginSuccess.jsp</title>
</head>
<body onload="">
<form name="login" method="post" action="login">
<table width="100%" border="0" cellpadding="0" cellspacing="0"
bgcolor="#FFFFFF">
<tr>
<td>Login Successful</td>
</tr>
</table>
</form>
</body>
</html>
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