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package com.in28minutes.springboot.myfirstwebapp.login;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import ch.qos.logback.core.model.Model;
@Controller
public class LoginController {
private AuthenticationService authenticationService;
public LoginController(AuthenticationService authenticationService) {
super();
this.authenticationService = authenticationService;
}
@RequestMapping(value="login", method=RequestMethod.GET)
public String gotoLoginPage() {
return "login";
}
@RequestMapping(value="login", method=RequestMethod.POST)
public String gotoWelcomePage(@RequestParam String name, @RequestParam String password, ModelMap model) {
if(authenticationService.authenticate(name, password)) {
model.put("name", name);
model.put("password", password);
return "welcome";
}
model.put("error", "Invalid PLZ try again.");
return "login";
}
}package com.in28minutes.springboot.myfirstwebapp.login;
import org.springframework.stereotype.Service;
@Service
public class AuthenticationService {
public boolean authenticate(String username, String password) {
boolean isValidUserName = username.equalsIgnoreCase("JH");
boolean isValidPassWord = password.equalsIgnoreCase("JH");
return isValidUserName && isValidPassWord;
}
}#login.jsp
<html>
<head>
<title> Login Page</title>
</head>
<body>
Welcome to the login page!!
<pre>${error}</pre>
<form method="post">
name: <input type="text" name = "name">
password: <input type="text" name = "password">
<input type = "submit">
</form>
</body>
</html>#welcome.jsp
<html>
<head>
<title> Welcome Page</title>
</head>
<body>
<div>Welcome to in 28minutes</div>
<div>Your name : ${name}</div>
<div>Your password : ${password}</div>
</body>
</html>
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