org.springframework.batch.item.file.FlatFileItemWriter Java Examples
The following examples show how to use
org.springframework.batch.item.file.FlatFileItemWriter.
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Example #1
Source File: FileItemWriterDemo.java From SpringAll with MIT License | 7 votes |
private FlatFileItemWriter<TestData> fileItemWriter() throws Exception { FlatFileItemWriter<TestData> writer = new FlatFileItemWriter<>(); FileSystemResource file = new FileSystemResource("/Users/mrbird/Desktop/file"); Path path = Paths.get(file.getPath()); if (!Files.exists(path)) { Files.createFile(path); } writer.setResource(file); // 设置目标文件路径 // 把读到的每个TestData对象转换为JSON字符串 LineAggregator<TestData> aggregator = item -> { try { ObjectMapper mapper = new ObjectMapper(); return mapper.writeValueAsString(item); } catch (JsonProcessingException e) { e.printStackTrace(); } return ""; }; writer.setLineAggregator(aggregator); writer.afterPropertiesSet(); return writer; }
Example #2
Source File: ConvertNamesJobConfig.java From spring-batch with MIT License | 6 votes |
@Bean public FlatFileItemWriter<Person> itemWriter() { BeanWrapperFieldExtractor<Person> fieldExtractor = new BeanWrapperFieldExtractor<>(); fieldExtractor.setNames(new String[] {"firstName", "lastName"}); fieldExtractor.afterPropertiesSet(); DelimitedLineAggregator<Person> lineAggregator = new DelimitedLineAggregator<>(); lineAggregator.setDelimiter(","); lineAggregator.setFieldExtractor(fieldExtractor); FlatFileItemWriter<Person> flatFileItemWriter = new FlatFileItemWriter<>(); flatFileItemWriter.setName("personItemWriter"); flatFileItemWriter.setResource(new FileSystemResource("target/test-outputs/persons.txt")); flatFileItemWriter.setLineAggregator(lineAggregator); return flatFileItemWriter; }
Example #3
Source File: CapitalizeNamesJobConfig.java From spring-batch with MIT License | 6 votes |
@Bean public FlatFileItemWriter<Person> itemWriter() { BeanWrapperFieldExtractor<Person> fieldExtractor = new BeanWrapperFieldExtractor<>(); fieldExtractor.setNames(new String[] {"firstName", "lastName"}); fieldExtractor.afterPropertiesSet(); DelimitedLineAggregator<Person> lineAggregator = new DelimitedLineAggregator<>(); lineAggregator.setDelimiter(","); lineAggregator.setFieldExtractor(fieldExtractor); FlatFileItemWriter<Person> flatFileItemWriter = new FlatFileItemWriter<>(); flatFileItemWriter.setName("personItemWriter"); flatFileItemWriter.setResource( new FileSystemResource("target/test-outputs/persons.txt")); flatFileItemWriter.setLineAggregator(lineAggregator); return flatFileItemWriter; }
Example #4
Source File: CapitalizeNamesJobConfig.java From spring-batch with MIT License | 5 votes |
@Bean public FlatFileItemWriter<Person> itemWriter() { return new FlatFileItemWriterBuilder<Person>() .name("personItemWriter") .resource(new FileSystemResource( "target/test-outputs/persons.txt")) .delimited().delimiter(", ") .names(new String[] {"firstName", "lastName"}).build(); }
Example #5
Source File: CapitalizeNamesJobConfig.java From spring-batch with MIT License | 5 votes |
@Bean public FlatFileItemWriter<Person> itemWriter() { return new FlatFileItemWriterBuilder<Person>() .name("personItemWriter") .resource(new FileSystemResource( "target/test-outputs/persons.txt")) .delimited().delimiter(", ") .names(new String[] {"firstName", "lastName"}).build(); }
Example #6
Source File: CapitalizeNamesJobConfig.java From spring-batch with MIT License | 5 votes |
@Bean public FlatFileItemWriter<Person> itemWriter() { return new FlatFileItemWriterBuilder<Person>() .name("personItemWriter") .resource(new FileSystemResource( "target/test-outputs/persons.txt")) .delimited().delimiter(", ") .names(new String[] {"firstName", "lastName"}).build(); }
Example #7
Source File: HelloWorldJobConfig.java From spring-batch with MIT License | 5 votes |
@Bean public FlatFileItemWriter<String> writer() { return new FlatFileItemWriterBuilder<String>() .name("greetingItemWriter") .resource(new FileSystemResource( "target/test-outputs/greetings.txt")) .lineAggregator(new PassThroughLineAggregator<>()).build(); }
Example #8
Source File: ItemWriterConfigure.java From SpringAll with MIT License | 5 votes |
@Bean public FlatFileItemWriter<TestData> fileItemWriter() throws Exception { FlatFileItemWriter<TestData> writer = new FlatFileItemWriter<>(); FileSystemResource file = new FileSystemResource("/Users/mrbird/Desktop/file"); Path path = Paths.get(file.getPath()); if (!Files.exists(path)) { Files.createFile(path); } writer.setResource(file); // 设置目标文件路径 // 把读到的每个TestData对象转换为字符串 LineAggregator<TestData> aggregator = item -> { try { ObjectMapper mapper = new ObjectMapper(); return mapper.writeValueAsString(item); } catch (JsonProcessingException e) { e.printStackTrace(); } return ""; }; writer.setLineAggregator(aggregator); writer.afterPropertiesSet(); return writer; }
Example #9
Source File: ConvertNamesJobConfig.java From spring-batch with MIT License | 4 votes |
@Bean public FlatFileItemWriter<Person> itemWriter() { return new FlatFileItemWriterBuilder<Person>().name("personItemWriter") .resource(new FileSystemResource("target/test-outputs/persons.txt")) .lineAggregator(new PassThroughLineAggregator<>()).build(); }
Example #10
Source File: CapitalizeNamesJobConfig.java From spring-batch with MIT License | 4 votes |
@Bean public FlatFileItemWriter<Person> itemWriter() { return new FlatFileItemWriterBuilder<Person>() .name("personItemWriter") .resource(new FileSystemResource( "target/test-outputs/persons.txt")) .delimited().delimiter(", ") .names(new String[] {"firstName", "lastName"}).build(); }
Example #11
Source File: FlatFileItemWriterAutoConfiguration.java From spring-cloud-task with Apache License 2.0 | 4 votes |
@Bean @ConditionalOnMissingBean @ConditionalOnProperty(prefix = "spring.batch.job.flatfilewriter", name = "name") public FlatFileItemWriter<Map<Object, Object>> itemWriter() { if (this.properties.isDelimited() && this.properties.isFormatted()) { throw new IllegalStateException( "An output file must be either delimited or formatted or a custom " + "LineAggregator must be provided. Your current configuration specifies both delimited and formatted"); } else if ((this.properties.isFormatted() || this.properties.isDelimited()) && this.lineAggregator != null) { throw new IllegalStateException("A LineAggregator must be configured if the " + "output is not formatted or delimited"); } FlatFileItemWriterBuilder<Map<Object, Object>> builder = new FlatFileItemWriterBuilder<Map<Object, Object>>() .name(this.properties.getName()).resource(this.properties.getResource()) .append(this.properties.isAppend()) .encoding(this.properties.getEncoding()) .forceSync(this.properties.isForceSync()) .lineSeparator(this.properties.getLineSeparator()) .saveState(this.properties.isSaveState()) .shouldDeleteIfEmpty(this.properties.isShouldDeleteIfEmpty()) .shouldDeleteIfExists(this.properties.isShouldDeleteIfExists()) .transactional(this.properties.isTransactional()) .headerCallback(this.headerCallback).footerCallback(this.footerCallback); if (this.properties.isDelimited()) { FlatFileItemWriterBuilder.DelimitedBuilder<Map<Object, Object>> delimitedBuilder = builder .delimited().delimiter(this.properties.getDelimiter()); if (this.fieldExtractor != null) { delimitedBuilder.fieldExtractor(this.fieldExtractor); } else { delimitedBuilder.fieldExtractor( new MapFieldExtractor(this.properties.getNames())); } } else if (this.properties.isFormatted()) { FlatFileItemWriterBuilder.FormattedBuilder<Map<Object, Object>> formattedBuilder = builder .formatted().format(this.properties.getFormat()) .locale(this.properties.getLocale()) .maximumLength(this.properties.getMaximumLength()) .minimumLength(this.properties.getMinimumLength()); if (this.fieldExtractor != null) { formattedBuilder.fieldExtractor(this.fieldExtractor); } else { formattedBuilder.fieldExtractor( new MapFieldExtractor(this.properties.getNames())); } } else if (this.lineAggregator != null) { builder.lineAggregator(this.lineAggregator); } return builder.build(); }
Example #12
Source File: FlatFileItemWriterAutoConfigurationTests.java From spring-cloud-task with Apache License 2.0 | 4 votes |
@Test public void testDelimitedFileGeneration() { ApplicationContextRunner applicationContextRunner = new ApplicationContextRunner() .withUserConfiguration(DelimitedJobConfiguration.class) .withConfiguration( AutoConfigurations.of(PropertyPlaceholderAutoConfiguration.class, BatchAutoConfiguration.class, SingleStepJobAutoConfiguration.class, FlatFileItemWriterAutoConfiguration.class)) .withPropertyValues("spring.batch.job.jobName=job", "spring.batch.job.stepName=step1", "spring.batch.job.chunkSize=5", "spring.batch.job.flatfilewriter.name=fooWriter", String.format( "spring.batch.job.flatfilewriter.resource=file://%s", this.outputFile.getAbsolutePath()), "spring.batch.job.flatfilewriter.encoding=UTF-16", "spring.batch.job.flatfilewriter.saveState=false", "spring.batch.job.flatfilewriter.shouldDeleteIfEmpty=true", "spring.batch.job.flatfilewriter.delimited=true", "spring.batch.job.flatfilewriter.names=item", "spring.batch.job.flatfilewriter.append=true", "spring.batch.job.flatfilewriter.forceSync=true", "spring.batch.job.flatfilewriter.shouldDeleteIfExists=false", "spring.batch.job.flatfilewriter.transactional=false"); applicationContextRunner.run((context) -> { JobLauncher jobLauncher = context.getBean(JobLauncher.class); Job job = context.getBean(Job.class); JobExecution jobExecution = jobLauncher.run(job, new JobParameters()); JobExplorer jobExplorer = context.getBean(JobExplorer.class); while (jobExplorer.getJobExecution(jobExecution.getJobId()).isRunning()) { Thread.sleep(1000); } FlatFileItemWriter writer = context.getBean(FlatFileItemWriter.class); AssertFile.assertLineCount(3, this.outputFile); AssertFile.assertFileEquals(new ClassPathResource("writerTestUTF16.txt"), new FileSystemResource(this.outputFile)); assertThat((Boolean) ReflectionTestUtils.getField(writer, "saveState")) .isFalse(); assertThat((Boolean) ReflectionTestUtils.getField(writer, "append")).isTrue(); assertThat((Boolean) ReflectionTestUtils.getField(writer, "forceSync")) .isTrue(); assertThat((Boolean) ReflectionTestUtils.getField(writer, "shouldDeleteIfExists")).isFalse(); assertThat((Boolean) ReflectionTestUtils.getField(writer, "transactional")) .isFalse(); }); }