[alibaba/easyexcel]无法处理BigInteger

异常代码

@Data
public class DemoData {
    @ExcelProperty("字符串标题")
    private String string;
    @ExcelProperty("日期标题")
    private Date date;
    @ExcelProperty("数字标题")
    private Double doubleData;
    @ExcelProperty("bigIntegerData")
    private BigInteger bigIntegerData;
    /**
     * 忽略这个字段
     */
    @ExcelIgnore
    private String ignore;
} 

    private List<DemoData> data() {
        List<DemoData> list = new ArrayList<DemoData>();
        for (int i = 0; i < 10; i++) {
            DemoData data = new DemoData();
            data.setString("字符串" + i);
            data.setDate(new Date());
            data.setDoubleData(0.56);
            data.setBigIntegerData(  new BigInteger(System.currentTimeMillis()+"" ) );
            list.add(data);
        }
        return list;
    } 

   @Test
    public void customHandlerWrite() {
        String fileName = TestFileUtil.getPath() + "customHandlerWrite" + System.currentTimeMillis() + ".xlsx";
        // 这里 需要指定写用哪个class去写，然后写到第一个sheet，名字为模板 然后文件流会自动关闭
        EasyExcel.write(fileName, DemoData.class).registerWriteHandler(new CustomSheetWriteHandler())
            .registerWriteHandler(new CustomCellWriteHandler()).sheet("模板").doWrite(data());

    }

**异常提示**
com.alibaba.excel.exception.ExcelDataConvertException: Can not find 'Converter' support class BigInteger.

    at com.alibaba.excel.write.executor.AbstractExcelWriteExecutor.doConvert(AbstractExcelWriteExecutor.java:108)
    at com.alibaba.excel.write.executor.AbstractExcelWriteExecutor.convert(AbstractExcelWriteExecutor.java:93)
    at com.alibaba.excel.write.executor.AbstractExcelWriteExecutor.converterAndSet(AbstractExcelWriteExecutor.java:39)
    at com.alibaba.excel.write.executor.ExcelWriteAddExecutor.addJavaObjectToExcel(ExcelWriteAddExecutor.java:137)
    at com.alibaba.excel.write.executor.ExcelWriteAddExecutor.addOneRowOfDataToExcel(ExcelWriteAddExecutor.java:65)
    at com.alibaba.excel.write.executor.ExcelWriteAddExecutor.add(ExcelWriteAddExecutor.java:51)
    at com.alibaba.excel.write.ExcelBuilderImpl.addContent(ExcelBuilderImpl.java:61)
    at com.alibaba.excel.ExcelWriter.write(ExcelWriter.java:161)
    at com.alibaba.excel.ExcelWriter.write(ExcelWriter.java:146)
    at com.alibaba.excel.write.builder.ExcelWriterSheetBuilder.doWrite(ExcelWriterSheetBuilder.java:190)
    at com.alibaba.easyexcel.test.demo.write.WriteTest.customHandlerWrite(WriteTest.java:424)
    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:498)
    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)

## **建议描述**
1.希望能默认加入支持BigInteger 类型转换 ,理由是jpa 默认查询从的long 会被转成BigInteger