1023 - Install Spring Security

[njtalba5127]

Timestamp: (1023) 1023 / 1433

[njtalba5127]

move the controller we just made inside a new package called "controllers"

.
└── backend
    ├── HELP.md
    ├── mvnw
    ├── mvnw.cmd
    ├── pom.xml
    ├── src
    │   ├── main
    │   │   ├── java
    │   │   │   └── com
    │   │   │       └── nellyxinwei
    │   │   │           └── backend
    │   │   │               ├── BackendApplication.java
    │   │   │               └── controllers
    │   │   │                   └── GreetingsController.java

[njtalba5127]

add the spring-security dependency inside our pom.xml

		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-security</artifactId>
		</dependency>

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>2.7.6</version>
		<relativePath /> <!-- lookup parent from repository -->
	</parent>
	<groupId>com.nellyxinwei</groupId>
	<artifactId>backend</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<name>backend</name>
	<description>Demo project for Spring Boot</description>
	<properties>
		<java.version>19</java.version>
	</properties>
	<dependencies>
		<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.boot</groupId>
			<artifactId>spring-boot-starter-security</artifactId>
		</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>

[njtalba5127]

after making changes to pom.xml, reload the java project again

[njtalba5127]

rerun spring boot application

terminal

./mvnw spring-boot:run  

[njtalba5127]

if u see the run logs of our app. by default spring boot would generate this generated security password now that we have added spring-security as our dependency

output from our terminal:

2022-12-16 17:01:57.111  WARN 993373 --- [ main] .s.s.UserDetailsServiceAutoConfiguration : 

Using generated security password: d6f58a90-4f24-454b-94e1-79bdbcb19571

[njtalba5127]

now if we open our localhost again in our browser, this time we'll be met up with a login form
http://localhost:8080/api/v1/greetings

[njtalba5127]

now lets try using the generated password from our running log to try and login and access our api endpoints.

username: "user" (by default its user)
password: "d6f58a90-4f24-454b-94e1-79bdbcb19571"

[njtalba5127]

now making through the login page, we can once again see the output when performing the different get requests we made with our simple controller - api using our browsers

[njtalba5127]

now when we go to the route in our browser http://localhost:8080/logout, itll show us a page with the message "Are you sure want to log out?" with a blue log out button

[njtalba5127]

on the next part theyll explain what happened exactly