Krishnkant Jaiswal rajj6

## SecurityDemoLoginPage.html
<!DOCTYPE html >
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:th="https://www.thymeleaf.org"
      xmlns:sec="https://www.thymeleaf.org/thymeleaf-extras-springsecurity3">
<head >
    <title>Spring Security Example </title>
</head>
<body>
<div th:if="${param.error}">
    Invalid username and password.
</div>

## SecurityDemoSpringSecurityApplication.java
package com.raj;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class SpringSecurityApplication {

	public static void main(String[] args) {
		SpringApplication.run(SpringSecurityApplication.class, args);

## SecurityDemoMyUserDelailsService.java
package com.raj.service;

import com.raj.model.User;
import com.raj.repository.UserRepository;
import com.raj.securingweb.UserPrincipal;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.stereotype.Service;

## SecurityDemoWebSecurityConig.java
package com.raj.securingweb;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.authentication.AuthenticationProvider;
import org.springframework.security.authentication.dao.DaoAuthenticationProvider;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;

## SecurityDemoUserPrincipal.java
package com.raj.securingweb;

import com.raj.model.User;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.core.userdetails.UserDetails;

import java.util.Collection;
import java.util.Collections;

## SecurityDemoUserRepo.java
package com.raj.repository;

import com.raj.model.User;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;

@Repository
public interface UserRepository extends JpaRepository<User, Long> {
    User findByEmail(String email);
}

## SecurityDemoController.java
package com.raj.controller;

import org.springframework.security.authentication.AnonymousAuthenticationToken;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.web.bind.annotation.GetMapping;

@org.springframework.stereotype.Controller
public class Controller {

## SecurityDemoUser.java
package com.raj.model;

import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.Table;

@Entity
@Table(name = "users")
public class User {

## gist:f8c86fe1b1527863bd86c1244ae971b1
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
	<modelVersion>4.0.0</modelVersion>
	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.4.2</version>
		<relativePath/> <!-- lookup parent from repository -->
	</parent>

## SecurityDemoApplication.properties
spring.datasource.url=jdbc:postgresql://localhost:5432/test
spring.datasource.username=postgres
spring.datasource.password=password
spring.jpa.generate-ddl=true

spring.jpa.show-sql=true
spring.jpa.properties.hibernate.format_sql=true
	<!DOCTYPE html >
	<html xmlns="http://www.w3.org/1999/xhtml" xmlns:th="https://www.thymeleaf.org"
	xmlns:sec="https://www.thymeleaf.org/thymeleaf-extras-springsecurity3">
	<head >
	<title>Spring Security Example </title>
	</head>
	<body>
	<div th:if="${param.error}">
	Invalid username and password.
	</div>
	package com.raj;

	import org.springframework.boot.SpringApplication;
	import org.springframework.boot.autoconfigure.SpringBootApplication;

	@SpringBootApplication
	public class SpringSecurityApplication {

	public static void main(String[] args) {
	SpringApplication.run(SpringSecurityApplication.class, args);
	package com.raj.service;

	import com.raj.model.User;
	import com.raj.repository.UserRepository;
	import com.raj.securingweb.UserPrincipal;
	import org.springframework.beans.factory.annotation.Autowired;
	import org.springframework.security.core.userdetails.UserDetails;
	import org.springframework.security.core.userdetails.UserDetailsService;
	import org.springframework.security.core.userdetails.UsernameNotFoundException;
	import org.springframework.stereotype.Service;
	package com.raj.securingweb;

	import org.springframework.beans.factory.annotation.Autowired;
	import org.springframework.context.annotation.Bean;
	import org.springframework.context.annotation.Configuration;
	import org.springframework.security.authentication.AuthenticationProvider;
	import org.springframework.security.authentication.dao.DaoAuthenticationProvider;
	import org.springframework.security.config.annotation.web.builders.HttpSecurity;
	import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
	import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
	package com.raj.repository;

	import com.raj.model.User;
	import org.springframework.data.jpa.repository.JpaRepository;
	import org.springframework.stereotype.Repository;

	@Repository
	public interface UserRepository extends JpaRepository<User, Long> {
	User findByEmail(String email);
	}
	package com.raj.controller;

	import org.springframework.security.authentication.AnonymousAuthenticationToken;
	import org.springframework.security.core.Authentication;
	import org.springframework.security.core.context.SecurityContextHolder;
	import org.springframework.web.bind.annotation.GetMapping;

	@org.springframework.stereotype.Controller
	public class Controller {
	package com.raj.model;

	import javax.persistence.Entity;
	import javax.persistence.Id;
	import javax.persistence.Table;

	@Entity
	@Table(name = "users")
	public class User {
	<?xml version="1.0" encoding="UTF-8"?>
	<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
	<modelVersion>4.0.0</modelVersion>
	<parent>
	<groupId>org.springframework.boot</groupId>
	<artifactId>spring-boot-starter-parent</artifactId>
	<version>2.4.2</version>
	<relativePath/> <!-- lookup parent from repository -->
	</parent>
	spring.datasource.url=jdbc:postgresql://localhost:5432/test
	spring.datasource.username=postgres
	spring.datasource.password=password
	spring.jpa.generate-ddl=true

	spring.jpa.show-sql=true
	spring.jpa.properties.hibernate.format_sql=true