How to use the JXLS framework to implement Excel data import and export

The JXLS framework is a Java -based open source framework for importing and exporting Excel data.It provides easy -to -use APIs and flexible template mechanisms, which can easily handle Excel files, while supporting the introduction and export of Chinese characters.This article will introduce how to use the JXLS framework to implement the import and export of Excel data, and provide the corresponding Java code example. 1. Import Excel data In order to import Excel data, you need to create a column and field of the data that needs to be imported and define the data that needs to be imported.Template files can be created using common Excel applications (such as Microsoft Excel or Apache Poi) and add corresponding field names in each column title.You can then use the API provided by JXLS to import Excel data into the Java object. First, you need to add the following dependencies to your Maven or Gradle configuration file: Maven: <dependency> <groupId>org.jxls</groupId> <artifactId>jxls</artifactId> <version>2.9.0</version> </dependency> Gradle: groovy implementation 'org.jxls:jxls:2.9.0' Then, you can use the JXLS framework to import Excel data according to the following code example: InputStream inputStream = new FileInputStream("path/to/template.xls"); OutputStream outputStream = new FileOutputStream("path/to/output.xls"); Context context = new Context(); context.putVar("data", yourDataList); JxlsHelper.getInstance().processTemplate(inputStream, outputStream, context); In the above example, you need to replace the path of `Path/To/Template.xls` with the path of your Excel template file and replace the` Path/To/Output.xls` to the output path of the export result.You also need to replace the `Yourdatalist` to your data list.In the template file, you can use the syntax of `$ {data.fieldname} to quote the fields in the Java object. 2. Export Excel data To export Excel data, you need to create an excel template file and use a specific mark in the template to specify the location you want to insert the data.You can then use the API provided by JXLS to export the data of the Java object to the Excel file. You can use the following code example to use the JXLS framework to export Excel data: InputStream inputStream = new FileInputStream("path/to/template.xls"); OutputStream outputStream = new FileOutputStream("path/to/output.xls"); Context context = new Context(); context.putVar("data", yourDataList); JxlsHelper.getInstance().processTemplate(inputStream, outputStream, context); In the above example, you need to replace the path of `Path/To/Template.xls` with the path of your Excel template file and replace the` Path/To/Output.xls` to the output path of the export result.You also need to replace the `Yourdatalist` to your data list.In the template file, you can use the syntax of `$ {data.fieldname} to quote the fields in the Java object. Summarize: It is very simple to introduce and export the Excel data with the JXLS framework.You only need to create an Excel template file, define fields and columns, and use JXLS's API to import the data into the Java object or export the data to the Excel file.In addition, the JXLS framework also supports the introduction and export of Chinese characters, which can easily process Chinese data.I hope this article will help you understand how to use the JXLS framework to achieve Excel data import and export. The above is the introduction of how to use the JXLS framework to implement Excel data import and export. I hope it will be helpful to you.If necessary, you can perform actual operations according to the above example code.