Huong Dan Java - Page 6 of 77 - Java development tutorials

Convert JSON data list string to object list in TypeScript

To convert a JSON data list string to a list of objects in TypeScript, you can use the parse() method of the JSON object. For example, I have a list of classes returned from the backend as a GraphQL response as follows:

const response: any = `{
    "data": {
        "clazzes": [
            {
                "id": "1",
                "name": "A1"
            },
            {
                "id": "2",
                "name": "A2"
            },
            {
                "id": "3",
                "name": "B1"
            },
            {
                "id": "4",
                "name": "B2"
            }
        ]
    }
}`;

const response: any = `{

"data": {

"clazzes": [

{

"id": "1",

"name": "A1"

{

"id": "2",

"name": "A2"

{

"id": "3",

"name": "B1"

{

"id": "4",

"name": "B2"

}

]

}

}`;

On the… Read More

Configure Flyway with Spring Data R2DBC in Spring Boot

2 years ago by Khanh NguyenFlyway

In the previous tutorial, I showed you how to configure Flyway with the Spring Boot application using Spring Data JDBC. If your Spring Boot application is using Spring Data R2DBC, then Flyway will not work. For example, I have a Spring Boot project with Flyway,… Read More

Spring Data R2DBC in Spring Boot application

2 years ago by Khanh NguyenR2DBC

I introduced you to Spring Data R2DBC. With Spring Boot, configuring and using Spring Data R2DBC is much simpler and more convenient. How is it in detail? Let’s find out together in this tutorial! First, I will create a Spring Boot project with Spring Data… Read More

Connection pool with R2DBC

2 years ago by Khanh NguyenR2DBC

The connection pool is how we control the maximum number of connections open to a certain server or database. This is how we save and use resources rationally, avoiding waste. No server can handle an unlimited number of connections! When working with a reactive database… Read More

Overview of Spring Data R2DBC

2 years ago by Khanh NguyenR2DBC

I introduced you to the Reactive Relational Database Connectivity (R2DBC) specs, about the Service Provider Interface library and the drivers that implement this SPI library in the previous tutorial. If your application uses Spring framework and wants to manipulate the database in a reactive mechanism,… Read More

map() method of Mono/Flux object in Project Reactor

2 years ago by Khanh NguyenProject Reactor

Unlike the flatMap() method, the map() method of the Mono/Flux object in the Project Reactor will process the item being emitted, synchronously: In the image above, green, yellow, and blue items emitted by Publisher will be processed by the map() method synchronously. The return result… Read More

Generate GraphQL contract server using GraphQL Maven plugin

2 years ago by Khanh NguyenApache Maven

With RESTful API, you can use the OpenAPI Generator Maven plugin to generate source code and just add the implementation for APIs. With GraphQL, you can also do this using the GraphQL Maven plugin. How is it in detail? Let’s find out together in this… Read More

RESTful API documentation with springdoc-openapi library in Spring Boot application

2 years ago by Khanh NguyenOpenAPI

In the previous tutorial, I showed you how to use the Springfox library to create RESTful API documentation according to OpenAPI specification in Spring Boot applications. But Springfox has been out of date for a long time and the springdoc-openapi library is updated continuously and… Read More

Create Maven Archetype for Maven multi-module project

2 years ago by Khanh NguyenApache Maven

In the previous tutorial, I showed you how to create a Maven Archetype for a normal Maven project. For Maven multi-module projects, how to create Maven Archetype? We will find out together in this article! As an example, I will take an example project of… Read More

Install OpenFeature flagd provider using Docker compose

2 years ago by Khanh NguyenOpenFeature

OpenFeature is an open standard that makes it possible to implement the concept of feature flags, on or off features of an application. To use OpenFeature, we need to have a service running outside the application that acts as a provider so that we can… Read More