使用FlatFileItemReader读取csv文件，在遇到空列时抛出异常

<bean id="itemReader" class="org.springframework.batch.item.file.FlatFileItemReader">
    <property name="resource" value="classpath:your_file.csv"/>
    <property name="lineMapper">
        <bean class="org.springframework.batch.item.file.mapping.DefaultLineMapper">
            <property name="lineTokenizer">
                <bean class="org.springframework.batch.item.file.transform.DelimitedLineTokenizer">
                    <property name="delimiter" value=","/>
                    <property name="names" value="column1,column2,column3"/>
                </bean>
            </property>
            <property name="fieldSetMapper">
                <bean class="org.springframework.batch.item.file.mapping.BeanWrapperFieldSetMapper">
                    <property name="targetType" value="your.package.YourObject"/>
                </bean>
            </property>
        </bean>
    </property>
</bean>

public class YourItemProcessor implements ItemProcessor<YourObject, YourObject> {
    @Override
    public YourObject process(YourObject item) throws Exception {
        if (item.getColumn1() == null || item.getColumn2() == null || item.getColumn3() == null) {
            // 处理空列
            // 比如记录日志
            // 抛出自定义异常
        }
        return item;
    }
}

<bean id="errorHandlingItemProcessor" class="org.springframework.batch.item.support.ErrorHandlingItemProcessor">
    <property name="delegate" ref="yourItemProcessor"/>
    <property name="exceptionHandler" ref="yourExceptionHandler"/>
</bean>

public class YourExceptionHandler implements ItemProcessListener<YourObject, YourObject> {
    @Override
    public void onProcessError(YourObject item, Exception e) {
        // 处理空列导致的异常
        // 比如记录日志
        // 抛出自定义异常
    }
}