弹簧批次: NotSerializableException

Question

我有Spring批处理作业使用的pojo类。

public class DataItem{
    String key;
    CellType type; //Enum
    String name;

    private XSSFCell cell; //org.apache.poi.xssf.usermodel.XSSFCell


   //getters setters omitted
}

当我试图运行批处理作业时，我会得到以下异常：

java.lang.IllegalArgumentException: Failed to serialize object of type: class org.springframework.batch.core.JobExecution
    at org.springframework.util.SerializationUtils.serialize(SerializationUtils.java:49)
    at org.springframework.batch.core.repository.dao.MapJobExecutionDao.copy(MapJobExecutionDao.java:50)
    at org.springframework.batch.core.repository.dao.MapJobExecutionDao.updateJobExecution(MapJobExecutionDao.java:104)
    at org.springframework.batch.core.repository.support.SimpleJobRepository.update(SimpleJobRepository.java:162)
    at org.springframework.batch.core.job.AbstractJob.execute(AbstractJob.java:351)
    at org.springframework.batch.core.launch.support.SimpleJobLauncher$1.run(SimpleJobLauncher.java:135)
    at org.springframework.core.task.SyncTaskExecutor.execute(SyncTaskExecutor.java:50)
    at org.springframework.batch.core.launch.support.SimpleJobLauncher.run(SimpleJobLauncher.java:128)
    at  com.excelreader.AppMain.run(AppMain.java:35)
    at  com.excelreader.AppMain.main(AppMain.java:16)
Caused by: java.io.NotSerializableException: com.excelreader.pojo.DataItem

Answer 1

DataItem及其内部的一切都必须实现Serializable接口。所以你才会有这个例外。