NullPointerException

[InspireYi]

com.alibaba easyexcel 2.2.6

代码 EasyExcel.read(file.getInputStream(), clazz, new SingleRowListener(rowProcessor)).sheet(0).doRead();

导入excel报错堆栈

at org.apache.poi.xssf.usermodel.XSSFTableStyle.(XSSFTableStyle.java:64) at org.apache.poi.xssf.model.StylesTable.readFrom(StylesTable.java:247) at org.apache.poi.xssf.model.StylesTable.(StylesTable.java:141) at org.apache.poi.xssf.eventusermodel.XSSFReader.getStylesTable(XSSFReader.java:126) at com.alibaba.excel.analysis.v07.XlsxSaxAnalyser.(XlsxSaxAnalyser.java:81) at com.alibaba.excel.analysis.ExcelAnalyserImpl.choiceExcelExecutor(ExcelAnalyserImpl.java:99) at com.alibaba.excel.analysis.ExcelAnalyserImpl.(ExcelAnalyserImpl.java:51) at com.alibaba.excel.ExcelReader.(ExcelReader.java:145) at com.alibaba.excel.read.builder.ExcelReaderBuilder.build(ExcelReaderBuilder.java:193) at com.alibaba.excel.read.builder.ExcelReaderBuilder.sheet(ExcelReaderBuilder.java:229) at com.alibaba.excel.read.builder.ExcelReaderBuilder.sheet(ExcelReaderBuilder.java:221)

请问这种怎么解决？

[Alanscut]

@InspireYi 我在这个项目的代码中没有找到SingleRowListener这个类，也没有在你的报错信息中看到NullPointerException。你能否提供有关这个NullPointerException问题的全部信息，例如错误提示或屏幕截图？请以附件的形式上传问题的所有代码和对应的excel，例如错误提示、屏幕截图、Demo、测试用例、整个项目的代码、对应的excel，等等，以帮助你分析此问题。谢谢！

[InspireYi]

class SingleRowListener extends AnalysisEventListener {

    private Consumer<T> rowProcessor;

    public SingleRowListener(Consumer<T> rowProcessor) {
        this.rowProcessor = rowProcessor;
    }

    @Override
    public void invoke(T data, AnalysisContext context) {
        rowProcessor.accept(data);
    }

    @Override
    public void doAfterAllAnalysed(AnalysisContext context) {

    }
}

List list = new ArrayList<>(); EasyExcel.read(file.getInputStream(), clazz, new SingleRowListener(x -> { list.add(x); })).sheet(0).doRead();

[InspireYi]

@Alanscut excel 我没法发上来，不知道是不是excel格式问题，并且不是所有导入都会报错，仅个别

[InspireYi]

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[Alanscut]

我按照你的代码新建了这个SingleRowListener，发现Consumer涉及导包有多个选择的问题，尝试几次后发现仍然编译报错。excel 应该可以上传，评论窗口下方有attach files，点击这个就可以上传excel、代码、图片、压缩包等。你说“不知道是不是excel格式问题，并且不是所有导入都会报错，仅个别”，我如果看到这个问题的全部信息后，就方便debug分析了。还请以附件的形式上传问题的所有代码和对应的excel，例如错误提示、屏幕截图、Demo、测试用例、整个项目的代码、对应的excel，等等，以帮助你分析此问题。谢谢！

[InspireYi]

@Alanscut 已将报错demo放至git，地址 https://github.com/InspireYi/easyexceltest 麻烦看看

[InspireYi]

TestApplication 直接运行main，有报错和不报错的示例

[InspireYi]

StylesTable 240行 CTDxfs styleDxfs = styleSheet.getDxfs(); 这个对象为空

[zhuangjiaju]

贴全代码 并上传文件。

[InspireYi]

https://github.com/InspireYi/easyexceltest @zhuangjiaju

[zhuangjiaju]

已经在3.0.0-beta1 版本修复，beta版本会在一个月内升级成正式版。