[springBoot] spring batch simpleTextReader (feat. file)

목차

아래 포스팅에서 이어진 내용입니다.

[springBoot] spring batch simpleReader insert other table( feat. JPA)

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구분자 없는 텍스트파일의 데이터를 읽어서 로그 출력하는 단순 예제

TextJob 😃

package com.lsy.sample.springbatchvideo.batch;

import com.lsy.sample.springbatchvideo.dto.OneDto;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.batch.core.Job;
import org.springframework.batch.core.Step;
import org.springframework.batch.core.configuration.annotation.JobBuilderFactory;
import org.springframework.batch.core.configuration.annotation.StepBuilderFactory;
import org.springframework.batch.item.file.FlatFileItemReader;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.ClassPathResource;

@Slf4j
@RequiredArgsConstructor
@Configuration
public class TextJob {

    private final JobBuilderFactory jobBuilderFactory;
    private final StepBuilderFactory stepBuilderFactory;
    private static final int chunkSize = 5;

    @Bean
    public Job textjob1_batchBuild() {
        return jobBuilderFactory.get("textJob1")
                .start(textJob1_batchStep1())
                .build();
    }


    @Bean
    public Step textJob1_batchStep1() {
        return stepBuilderFactory.get("testJob1_batchStep1")
                .<OneDto, OneDto>chunk(chunkSize)
                .reader(textJob1_FileReader())
                .writer(OneDto -> OneDto.stream().forEach(i -> {
                    log.debug(i.toString());
                }))
                .build();
    }

    // text reader
    @Bean
    public FlatFileItemReader<OneDto> textJob1_FileReader() {
        FlatFileItemReader<OneDto> flatFileItemReader = new FlatFileItemReader<>();
        flatFileItemReader.setResource(new ClassPathResource("sample/textJob1_input.txt"));
        flatFileItemReader.setLineMapper((line, lineNumber) -> new OneDto(lineNumber + " == " + line));
        return flatFileItemReader;
    }


}

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개인 스터디 기록을 메모하는 공간이라 틀린점이 있을 수 있습니다.

틀린 점 있을 경우 댓글 부탁드립니다.

reference: https://www.youtube.com/watch?v=wy99cPHlMlA&list=PLogzC_RPf25HRSG9aO7qKrwbT-EecUMMR

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다음 내용

[springBoot] spring batch write to new file (feat. file)