java

java
package com.example.api.error;

import com.fasterxml.jackson.annotation.JsonInclude;

import java.time.Instant;
import java.util.List;

Structured Error Responses with @RestControllerAdvice in Spring Boot

spring-boot rest-api exception-handling
by codesnips 3 tabs
java
package com.example.demo.controller;

import com.example.demo.model.User;
import com.example.demo.service.UserService;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;

Spring Boot REST API with CRUD operations

java spring-boot rest-api
by David Kumar 3 tabs
java
package com.example.demo.service;

import com.example.demo.exception.ResourceNotFoundException;
import com.example.demo.model.User;
import com.example.demo.repository.UserRepository;
import org.junit.jupiter.api.BeforeEach;

JUnit 5 and Mockito testing strategies

java testing junit
by David Kumar 2 tabs
java
package com.example.demo.controller;

import com.example.demo.model.User;
import com.example.demo.service.ReactiveUserService;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;

Reactive programming with WebFlux

java spring-webflux reactive
by David Kumar 2 tabs
xml
<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <springProperty scope="context" name="APP_NAME" source="spring.application.name"/>

    <appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
        <encoder>

Logging with SLF4J and Logback

java logging slf4j
by David Kumar 2 tabs
java
import com.fasterxml.jackson.annotation.JsonSubTypes;
import com.fasterxml.jackson.annotation.JsonTypeInfo;
import com.fasterxml.jackson.annotation.JsonTypeInfo.As;
import com.fasterxml.jackson.annotation.JsonTypeInfo.Id;

import java.math.BigDecimal;

Deserialize Polymorphic JSON into a Sealed Interface Hierarchy with Jackson

jackson json deserialization
by codesnips 3 tabs
java
package com.example.reference;

import jakarta.persistence.Column;
import jakarta.persistence.Entity;
import jakarta.persistence.Id;
import jakarta.persistence.Table;

Seed Reference Data at Boot with a Spring Boot ApplicationRunner

spring-boot seeding reference-data
by codesnips 4 tabs
java
package com.example.demo.config;

import com.github.benmanes.caffeine.cache.Caffeine;
import org.springframework.cache.CacheManager;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.cache.caffeine.CaffeineCacheManager;

Caching strategies with Spring Cache

java spring-boot caching
by David Kumar 2 tabs
java
package com.example.demo.config;

import com.example.demo.security.JwtAuthenticationFilter;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.authentication.AuthenticationManager;

Security with Spring Security and JWT

java spring-security jwt
by David Kumar 3 tabs
java
package com.example.catalog.web;

import com.example.catalog.domain.Product;
import java.math.BigDecimal;

public record ProductResponse(

Paginated Product Search Endpoint with Spring Data JPA Specifications

spring-boot spring-data-jpa pagination
by codesnips 4 tabs
java
@RestController
@RequestMapping("/api/exports")
public class ExportController {

    private final CsvStreamWriter csvStreamWriter;

Streaming a Large CSV Export in Spring Boot with StreamingResponseBody

spring-boot streaming csv
by codesnips 4 tabs
java
@Configuration
@EnableAsync
public class AsyncConfig {

    @Bean(name = "orderExecutor")
    public ThreadPoolTaskExecutor orderExecutor() {

Debouncing Order Recalculations with Spring @Async and a Configured ThreadPoolTaskExecutor

spring-boot async thread-pool
by codesnips 3 tabs