当数据列表里面有值为空的时候使用会触发空指针异常

[gao1399677]

触发场景描述
当数据列表里面有值为空的时候使用会触发空指针异常
版本2.2.2

触发Bug的代码
将com.alibaba.easyexcel.test.demo.fill.FillTest#data中的// fillData.setName("张三");注释掉
单元测试com.alibaba.easyexcel.test.demo.fill.FillTest#compositeFill会触发bug,下面是我使用时触发的代码

BiConsumer<ExcelWriter, WriteSheet> doFill = (writer, sheet) -> {
            FillConfig fillConfig = FillConfig.builder().forceNewRow(Boolean.TRUE).build();
            writer.fill(new FillWrapper("a", register.getUnRegisterList()), sheet);
            writer.finish();
        };

提示的异常或者没有达到的效果

java.lang.NullPointerException
	at com.alibaba.excel.converters.ConverterKeyBuild.buildKey(ConverterKeyBuild.java:29)
	at com.alibaba.excel.write.executor.AbstractExcelWriteExecutor.doConvert(AbstractExcelWriteExecutor.java:103)
	at com.alibaba.excel.write.executor.AbstractExcelWriteExecutor.convert(AbstractExcelWriteExecutor.java:93)
	at com.alibaba.excel.write.executor.AbstractExcelWriteExecutor.converterAndSet(AbstractExcelWriteExecutor.java:41)
	at com.alibaba.excel.write.executor.ExcelWriteFillExecutor.doFill(ExcelWriteFillExecutor.java:202)
	at com.alibaba.excel.write.executor.ExcelWriteFillExecutor.fill(ExcelWriteFillExecutor.java:118)
	at com.alibaba.excel.write.ExcelBuilderImpl.fill(ExcelBuilderImpl.java:78)
	at com.alibaba.excel.ExcelWriter.fill(ExcelWriter.java:185)
	at com.alibaba.easyexcel.test.demo.fill.FillTest.compositeFill(FillTest.java:200)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:497)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
	at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
	at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
	at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33)
	at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:230)
	at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:58)

将com.alibaba.excel.write.executor.AbstractExcelWriteExecutor#doConvert的

if (value == null && !(converter instanceof NullableObjectConverter)) {
            return new CellData(CellDataTypeEnum.EMPTY);

    }提到最前放面做判断不会触发错误

private CellData doConvert(WriteHolder currentWriteHolder, Class clazz, Cell cell, Object value,
        ExcelContentProperty excelContentProperty) {
        Converter converter = null;
        if (excelContentProperty != null) {
            converter = excelContentProperty.getConverter();
        }
        if (value == null && !(converter instanceof NullableObjectConverter)) {
            return new CellData(CellDataTypeEnum.EMPTY);
        }
        if (converter == null) {
            converter = currentWriteHolder.converterMap().get(ConverterKeyBuild.buildKey(clazz));
        }
        if (converter == null) {
            throw new ExcelDataConvertException(cell.getRow().getRowNum(), cell.getColumnIndex(),
                new CellData(CellDataTypeEnum.EMPTY), excelContentProperty,
                "Can not find 'Converter' support class " + clazz.getSimpleName() + ".");
        }
        CellData cellData;
        try {
            cellData =
                converter.convertToExcelData(value, excelContentProperty, currentWriteHolder.globalConfiguration());
        } catch (Exception e) {
            throw new ExcelDataConvertException(cell.getRow().getRowNum(), cell.getColumnIndex(),
                new CellData(CellDataTypeEnum.EMPTY), excelContentProperty,
                "Convert data:" + value + " error,at row:" + cell.getRow().getRowNum(), e);
        }
        if (cellData == null || cellData.getType() == null) {
            throw new ExcelDataConvertException(cell.getRow().getRowNum(), cell.getColumnIndex(),
                new CellData(CellDataTypeEnum.EMPTY), excelContentProperty,
                "Convert data:" + value + " return null,at row:" + cell.getRow().getRowNum());
        }
        return cellData;
    }

[zhuangjiaju]

不好意思。新改出来了的bug,麻烦升级到2.2.3