Spring Boot Tutorial | Full Course [2023] [NEW]

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Recommends Cody McCarty · 2021-12 · Stack Overflow · on “Error running Spring boot quickstart project”

try building the application under a different package, or adding @componentscan annotation on the application class to specify the package to scan If you're new to spring boot... I get a little confused using Spring boot's documentation. But spring's documentaion is easier for me to follow. Additionally, there's a YT with decent spring info. [LINK] [this video]

Recommends Enfield Li · 2022-04 · Stack Overflow · on “How to understand @Transactional with setters in Java?”

Following tutorial on Java Spring, I'm trying to understand how does @Transactional work with setters, and from other question/sources, I can't find a beginner-friendly explanation for it. Let's say I have a user entity with getters and setters: @Entity public class User { // Id set up private Long id; private String name; private String email; private String password; // Other constructors, setters and getters public void setName(String name) { this.name = name; } } And in the UserService I have a getUserName method: @Service public class UserService { private final UserRepository userRepository; @Autowired public UserService(UserRepository userRepository) { this.userRepository = userReposi

Recommends RedRum · 2022-10 · Stack Overflow · on “Cannot resolve symbol repository”

I have a StudentRepository and a Student Config file but when I try to had a repository.saveAll function in the StudentConfig file, I get an error saying Cannot resolve symbol 'repository' . Am I missing an obvious annotation somewhere? I'm following this tutorial which is good but it misses a few things which is annoying [this video] My Student repository file is like so: package com.example.demo.student; import org.springframework.data.jpa.repository.JpaRepository; import org.springframework.stereotype.Repository; @Repository public interface StudentRepository extends JpaRepository<Student, Long> { } My StudentConfig file is like so which contains the following error causer towards the bottom o

Recommends becote · 2023-04 · Stack Overflow · on “How tu transfer data between backend in spring boot and frontend vuejs”

You can create an endpoint with your backend and return it via your backend application and consumes it with your frontend using axios or something like that. I really suggest you watch some of the great tutorials out there like : SringBoot Tutorial by AmigosCode [this video] There's the documentation on axios : Axios with Vue.js [LINK]

Recommends Oleg Khandozhko · 2023-07 · Stack Overflow · on “How can I change the database table column order?”

I am trying to learn something using this tutorial [this video] . Now I connect my new database with my Spring (Java) something. However, I don't understand why in RUN output in IJ and SQL Shell shows wrong order of lines. The first line in column should be ID. After that, name, email, date, age should follow. In reality columns are shown in this order: age,date,id,email,name. How can I change it? Example from SQL Shell: Column | Type | Collation | Nullable | Default --------+------------------------+-----------+----------+--------- age | integer | | | dob | date | | | id | bigint | | not null | email | character varying(255) | | | name | character varying(255) | | | Indexes: "student_pkey" PRIMA

Cites AdamusBG · 2021-06 · Stack Overflow · on “I cannot edit http files or use the http client on IntelliJ, how can I resolve this?”

I am trying to learn Spring Boot and as part of this I need to send http requests to test the functionality of the API I have created. When following along with this video [this video] , the teacher had an 'actions for URL' selection which I do not see in my own editor. Note that the point in the video I linked shows this. After updating (to IDEA 2021.1) and restarting I still could not see this option. I tried to create my own .http file, but am not able to work with this type of file [LINK] . After more research I found that I should have a plugin called 'http client' installed by default. I cannot find this in my installed plugins or by searching through the marketplace. When downloading and i

Cites art1722 · 2022-06 · Stack Overflow · on “Spring boot - org.postgresql.util.PSQLException: FATAL: password authentication failed for user "postgres"”

I watched Amigos spring boot tutorial course [this video] , and I tried to follow along in Windows. Everything seems to work perfectly, until the unit Creating and Connecting to Database, at 36:15. In my SQL shell: Server [localhost]: Database [postgres]: Port [5433]: Username [postgres]: Password for user postgres: psql (10.21) WARNING: Console code page (437) differs from Windows code page (1252) 8-bit characters might not work correctly. See psql reference page "Notes for Windows users" for details. Type "help" for help. postgres=# In IntelliJ, inside application.properties . spring.datasource.url=jdbc:postgresql://localhost:5432/student spring.datasource.username=postgres spring.datasource.pa

Cites ImprovedEngineer · 2022-08 · Stack Overflow · on “Parameter 0 of constructor in com.example.User.UserService required a bean of type 'com.example.User.UserRepository' that could not be found”

I am not sure why I get this error but I suspect that it is from the TestApplication.java. I've tried various things like, Question1 [LINK] , but cannot figure out what is wrong. I referenced this video [this video] to build this application. ERROR *************************** APPLICATION FAILED TO START *************************** Description: Parameter 0 of constructor in com.example.User.UserService required a bean of type 'com.example.User.UserRepository' that could not be found. Action: Consider defining a bean of type 'com.example.User.UserRepository' in your configuration. TestApplication.java package com.example.test; import org.springframework.boot.SpringApplication; import org.springfram

Cites David Rob · 2022-08 · Stack Overflow · on “How can I debug a 404 on a POST request to the Server I have running on local which was built with SpringBoot?”

I am a beginner to using SpringBoot, therefore I am following along with this guide: [this video] I am at the 'Testing Post Request' section of the video. At 1:15:00 of the video, he tests his Post request successfully. I have taken every step that he has taken and my code is identical (to my knowledge) to his, but instead of getting back a 200, I am getting back a 404 and this is what is produced in the logs: HTTP/1.1 404 Not Found Server: nginx/1.23.0 Date: Thu, 04 Aug 2022 20:25:49 GMT Content-Type: text/html Content-Length: 153 Connection: keep-alive <html> <head> <title>404 Not Found</title> </head> <body> <center> <h1>404 Not Found</h1> </center> <hr> <center>nginx/1.23.0</center> </body> <

Cites Sko · 2022-12 · Stack Overflow · on “Springboot/Java Getting whitelabel error in simple hello world program”

I am trying to teach myself to code and very new to programming. I am following a Spring Boot Tutorial from amigoscode on Youtube : ( [this video] ) This is the code I have in IntelliJ: package com.example.demo; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.RestController; @SpringBootApplication @RestController public class DemoApplication { public static void main(String[] args) { SpringApplication.run(DemoApplication.class, args); } @GetMapping public String hello() { return "hello world"; } } The code appears to comp