Uncategorized Archives

Spring Boot Role Based Form Login

July 11, 2023July 11, 2023 by manish

DemoApplication.java

package com.example.demo;

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


@SpringBootApplication
public class DemoApplication {

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

}

package com.example.demo;

import org.springframework.boot.SpringApplication;

import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication

public class DemoApplication {

public static void main(String[] args) {

SpringApplication.run(DemoApplication.class, args);

}

TestController.java

package com.example.demo.controller;

import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class TestController {

	@RequestMapping("/info")
	public String info() {
		return "This is a info page";
	}

	@RequestMapping("/home")
	public String user() {
		return "This is a home page";
	}

	@RequestMapping("/teacher")
	public String teacher() {
		return "This is a teacher page";
	}

	@RequestMapping("/admin")
	public String home() {
		return "This is a admin page";
	}

}

package com.example.demo.controller;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RestController;

@RestController

public class TestController {

@RequestMapping("/info")

public String info() {

return "This is a info page";

}

@RequestMapping("/home")

public String user() {

return "This is a home page";

}

@RequestMapping("/teacher")

public String teacher() {

return "This is a teacher page";

}

@RequestMapping("/admin")

public String home() {

return "This is a admin page";

}

SecurityConfiguration.java

package com.example.demo.configuration;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.core.userdetails.User;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.provisioning.InMemoryUserDetailsManager;
import org.springframework.security.web.SecurityFilterChain;

@Configuration
@EnableWebSecurity
public class SecurityConfiguration {

	@Bean
	public SecurityFilterChain filterChain(HttpSecurity httpSecurity) throws Exception {
		httpSecurity.csrf().disable().authorizeHttpRequests()
		.requestMatchers("/info").permitAll()
				.requestMatchers("/teacher").hasRole("TEACHER")
				.requestMatchers("/admin").hasRole("ADMIN")
				.anyRequest().authenticated().and().formLogin();
		return httpSecurity.build();
	}

	@Bean
	public InMemoryUserDetailsManager userDetailsService() {
		// InMemoryUserDetailsManager (see below)
		UserDetails user1 = User.withUsername("user1").password(passwordEncoder().encode("password")).roles("USER")
				.build();

		UserDetails user2 = User.withUsername("user2").password(passwordEncoder().encode("password")).roles("TEACHER")
				.build();

		UserDetails user3 = User.withUsername("user3").password(passwordEncoder().encode("password")).roles("ADMIN")
				.build();

		return new InMemoryUserDetailsManager(user1, user2, user3);
	}

	@Bean
	public PasswordEncoder passwordEncoder() {
		return new BCryptPasswordEncoder();
	}

}

package com.example.demo.configuration;

import org.springframework.context.annotation.Bean;

import org.springframework.context.annotation.Configuration;

import org.springframework.security.config.annotation.web.builders.HttpSecurity;

import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;

import org.springframework.security.core.userdetails.User;

import org.springframework.security.core.userdetails.UserDetails;

import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;

import org.springframework.security.crypto.password.PasswordEncoder;

import org.springframework.security.provisioning.InMemoryUserDetailsManager;

import org.springframework.security.web.SecurityFilterChain;

@Configuration

@EnableWebSecurity

public class SecurityConfiguration {

@Bean

public SecurityFilterChain filterChain(HttpSecurity httpSecurity) throws Exception {

httpSecurity.csrf().disable().authorizeHttpRequests()

.requestMatchers("/info").permitAll()

.requestMatchers("/teacher").hasRole("TEACHER")

.requestMatchers("/admin").hasRole("ADMIN")

.anyRequest().authenticated().and().formLogin();

return httpSecurity.build();

}

@Bean

public InMemoryUserDetailsManager userDetailsService() {

// InMemoryUserDetailsManager (see below)

UserDetails user1 = User.withUsername("user1").password(passwordEncoder().encode("password")).roles("USER")

.build();

UserDetails user2 = User.withUsername("user2").password(passwordEncoder().encode("password")).roles("TEACHER")

.build();

UserDetails user3 = User.withUsername("user3").password(passwordEncoder().encode("password")).roles("ADMIN")

.build();

return new InMemoryUserDetailsManager(user1, user2, user3);

}

@Bean

public PasswordEncoder passwordEncoder() {

return new BCryptPasswordEncoder();

}

POM.xml

<?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>3.1.1</version>
		<relativePath /> <!-- lookup parent from repository -->
	</parent>
	<groupId>com.example</groupId>
	<artifactId>demo</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<name>demo</name>
	<description>Demo project for Spring Boot</description>
	<properties>
		<java.version>17</java.version>
	</properties>
	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-security</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
		<dependency>
			<groupId>org.projectlombok</groupId>
			<artifactId>lombok</artifactId>
			<optional>true</optional>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>
		<dependency>
			<groupId>org.springframework.security</groupId>
			<artifactId>spring-security-test</artifactId>
			<scope>test</scope>
		</dependency>
	</dependencies>
	<build>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
				<configuration>
					<excludes>
						<exclude>
							<groupId>org.projectlombok</groupId>
							<artifactId>lombok</artifactId>
						</exclude>
					</excludes>
				</configuration>
			</plugin>
		</plugins>
	</build>
</project>

<?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">

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-starter-parent</artifactId>

</parent>

<groupId>com.example</groupId>

<version>0.0.1-SNAPSHOT</version>

<description>Demo project for Spring Boot</description>

<java.version>17</java.version>

</properties>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-starter-security</artifactId>

</dependency>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-starter-web</artifactId>

</dependency>

<groupId>org.projectlombok</groupId>

<artifactId>lombok</artifactId>

</dependency>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-starter-test</artifactId>

</dependency>

<groupId>org.springframework.security</groupId>

<artifactId>spring-security-test</artifactId>

</dependency>

</dependencies>

<build>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-maven-plugin</artifactId>

<groupId>org.projectlombok</groupId>

<artifactId>lombok</artifactId>

</exclude>

</excludes>

</configuration>

</plugin>

</plugins>

</build>

</project>

छत्तीसगढ़ प्राकृतिक प्रदेश

June 30, 2023June 30, 2023 by manish

प्राकृतिक विभाजन प्रतिशत् क्षेत्रफल 1) छत्तीसगढ़ का मैदान/ 50.34ः 68064 वर्ग कि.मी. महानदी बेसिन 2) दण्डकारण्य का पठार 28.91ः 39060 वर्ग कि.मी. 3) पूर्वी बघेल का पठार 16.16ः 21863 वर्ग कि.मी 4) जशपुर सामरी पाट 4.59ः 6205 वर्ग कि.मी. छत्तीसगढ़ का मैैदान इसके भौतिक उपविभाग पेण्ड्रा, लोरमी का पठार, व छुरी उदयपुर की पहाड़ियों छ.ग. … Read more

Proof of Work (PoW) on Blockchain: Decentralised Trust Security

June 29, 2023 by manish

In the digital age, the concept of trust has grown crucial in many sectors, particularly banking and transactions. Here we will discuss Proof of Work (PoW) on Blockchain. Blockchain technology has emerged as a game changer, enabling decentralised trust and security. The Proof of Work (PoW) consensus method is at the heart of blockchain’s security … Read more

How to get data from database to servlet jdbc JSP

June 14, 2023June 10, 2023 by manish

Here we will get data from the database to servlet JDBC and show data on the JSP page using Jakarta Server Pages and the JSTL library. Technology used apache-tomcat-10.1.1 JavaSE-17 eclipse IDE for Enterprise Java and Web Developers Steps to develop programs Create MySql Table and insert data Create A Dynamic Web Project Create package … Read more

How To Calculate The Percent?

February 12, 2023 by manish

Before understanding how to calculate the percent, let us know what a percent is. What’s The Percentage Of A Number? The term “percentage or percent” was adapted from the Latin word “per centum”, which implies “by the hundred”. A number or a ratio expressed in terms of fractions of 100 is known as a percentage. … Read more

How to find ascii value in c

February 22, 2023February 4, 2023 by manish

ASCII stands for American Standard Code for Information Interchange, which is a standardized encoding system used to represent text characters in computers. Each ASCII character is assigned a unique numeric value between 0 and 127. What are ASCII Values? ASCII values, also known as ASCII codes or ASCII character codes, are a standardized set of … Read more

setting unix cron job

February 4, 2023February 2, 2023 by manish

*/2 * * * * /opt/script/backup.sh * * * * * /usr/bin/php /var/www/domain.com/backup.php > /dev/null 2>&1

Nginx and tomcat server configuration

January 21, 2023January 20, 2023 by manish

server {
  listen          80;
  root            /opt/tomcat/webapps/ROOT/;//or path where you want to redirect the nginx serviceN
   server_name mysite.com www.mysite.com;
   server_name_in_redirect off;
    access_log /var/log/nginx/site/site_access.log;
    error_log /var/log/nginx/site/site_error.log debug;

  location / {
        proxy_set_header Host $host;
        proxy_set_header X-Forwarded-Server $host;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_cookie_path ~*^/.* /;
        proxy_pass http://localhost:8080;
  }
}

server {

listen 80;

root /opt/tomcat/webapps/ROOT/;//or path where you want to redirect the nginx serviceN

server_name mysite.com www.mysite.com;

server_name_in_redirect off;

access_log /var/log/nginx/site/site_access.log;

error_log /var/log/nginx/site/site_error.log debug;

location / {

proxy_set_header Host $host;

proxy_set_header X-Forwarded-Server $host;

proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

proxy_cookie_path ~*^/.* /;

proxy_pass http://localhost:8080;

}

Earth and Universe

December 10, 2022 by manish

Earth Earth is the third planet from the Sun and the only object in the Universe known to harbor life. According to radiometric dating and other sources of evidence, Earth formed over 4.5 billion years ago. Earth’s gravity interacts with other objects in space, especially the Sun and the Moon, Earth’s only natural satellite. Earth … Read more

छत्तीसगढ़: सीमा तथा विस्तार भौगोलिक परिचय

October 16, 2020 by manish

छ.ग. राज्य लगभग 17.46 उतरीय अक्षांश से 24.5 उतरी अक्षांश तथा 80.15 पुर्वी देशान्तर में 84.25 पूर्वी देशान्तर के बीच स्थित है, क्षेत्रफल छ.ग. राज्य का क्षेत्रफल -1,35,192 वर्ग ाउ देश का 26 वाॅ राज्य (27 वाॅ उत्तराखण्ड, 28 वाॅ झारखण्ड,29 वाॅ 2जून 2014 तेलंगाना) देश के क्षेत्रफल का हिस्सा – 4.11ः म.प्र. के क्षेत्रफल … Read more