* fifth Batch 상태 저장 금지 close #6

src/main/java/com/example/springbatch/batch/ExcelRowWriter.java

@@ -6,6 +6,7 @@ import org.apache.poi.ss.usermodel.Sheet;
 import org.apache.poi.ss.usermodel.Workbook;
 import org.apache.poi.xssf.usermodel.XSSFWorkbook;
 import org.springframework.batch.item.Chunk;
+import org.springframework.batch.item.ExecutionContext;
 import org.springframework.batch.item.ItemStreamException;
 import org.springframework.batch.item.ItemStreamWriter;
 
@@ -17,16 +18,16 @@ public class ExcelRowWriter implements ItemStreamWriter<BeforeEntity> {
     private final String filePath;
     private Workbook workbook;
     private Sheet sheet;
-    private int rowIndex = 0;
+    private int currentRowNumber;
 
     public ExcelRowWriter(String filePath) throws IOException {
 
         this.filePath = filePath;
-        initialize();
+        currentRowNumber = 0;
     }
 
-    private void initialize() throws ItemStreamException {
-
+    @Override
+    public void open(ExecutionContext executionContext) throws ItemStreamException {
         workbook = new XSSFWorkbook();
         sheet = workbook.createSheet("Sheet1");
     }
@@ -34,7 +35,7 @@ public class ExcelRowWriter implements ItemStreamWriter<BeforeEntity> {
     @Override
     public void write(Chunk<? extends BeforeEntity> chunk) {
         for (BeforeEntity entity : chunk) {
-            Row row = sheet.createRow(rowIndex++);
+            Row row = sheet.createRow(currentRowNumber++);
             row.createCell(0).setCellValue(entity.getUsername());
         }
     }
@@ -49,10 +50,9 @@ public class ExcelRowWriter implements ItemStreamWriter<BeforeEntity> {
         } finally {
             try {
                 workbook.close();
-                rowIndex = 0;
             } catch (IOException e) {
                 throw new ItemStreamException(e);
             }
         }
     }
-}
+}

src/main/java/com/example/springbatch/batch/FifthBatch.java

@@ -58,13 +58,18 @@ public class FifthBatch {
     @Bean
     public RepositoryItemReader<BeforeEntity> fifthBeforeReader() {
 
-        return new RepositoryItemReaderBuilder<BeforeEntity>()
+        RepositoryItemReader<BeforeEntity> reader = new RepositoryItemReaderBuilder<BeforeEntity>()
                 .name("beforeReader")
                 .pageSize(10)
                 .methodName("findAll")
                 .repository(beforeRepository)
                 .sorts(Map.of("id", Sort.Direction.ASC))
                 .build();
+
+        // 전체 데이터 셋에서 어디까지 수행 했는지의 값을 저장하지 않음
+        reader.setSaveState(false);
+
+        return reader;
     }
 
     @Bean