Application example of the JXLS framework in Java development
Application example of the JXLS framework in Java development
JXLS is an open source framework for generating excel files in Java applications.It provides a simple and flexible method to fill the data into the Excel template and generate a complete electronic table with format, formula and style.Here are several application instances of the JXLS framework in Java development.
1. Generate report
The JXLS framework can be used to generate various types of reports, such as sales reports, financial statements, human resources reports, etc.Developers can create an Excel template that includes the layout and format of the report, and uses the JXLS framework to fill the data into the template.Through flexible APIs, dynamic adjustments can be made according to different needs to generate reports that meet the requirements.
Example code:
String templatePath = "path/to/template.xlsx";
String outputPath = "path/to/output.xlsx";
try (InputStream is = new FileInputStream(templatePath);
OutputStream os = new FileOutputStream(outputPath)) {
Context context = new Context();
context.putvar ("reportData", reportdata; // reportdata is the report data
JxlsHelper.getInstance().processTemplate(is, os, context);
} catch (IOException e) {
e.printStackTrace();
}
2. Export data
The JXLS framework can also be used to export data in Java applications to Excel files.By creating an Excel template and filling the data in the template with the JXLS framework, you can generate an Excel file containing the application data.This is very useful for export data for further analysis or sharing with others.
Example code:
String templatePath = "path/to/template.xlsx";
String outputPath = "path/to/output.xlsx";
try (InputStream is = new FileInputStream(templatePath);
OutputStream os = new FileOutputStream(outputPath)) {
Context context = new Context();
context.putvar ("data", data); // Data is the data to be exported
JxlsHelper.getInstance().processTemplate(is, os, context);
} catch (IOException e) {
e.printStackTrace();
}
3. Batch export
The JXLS framework also supports multiple Excel files in batches.Developers can generate multiple excel files by using the JXLS framework API in the cycle.This is very useful for batching personal reports, batch processing orders and other scenarios.
Example code:
String templatePath = "path/to/template.xlsx";
String outputFolderPath = "path/to/output";
try (InputStream is = new FileInputStream(templatePath)) {
For (data data: datalist) {// dataList is a list of data to be exported
String outputFilePath = outputFolderPath + "/output_" + data.getId() + ".xlsx";
try (OutputStream os = new FileOutputStream(outputFilePath)) {
Context context = new Context();
context.putVar("data", data);
JxlsHelper.getInstance().processTemplate(is, os, context);
}
}
} catch (IOException e) {
e.printStackTrace();
}
Summarize:
The JXLS framework provides a simple and powerful way to generate Excel files in Java development.It can be applied to various scenarios, such as generating reports, export data and batch export.Through the JXLS framework, you can easily fill the data into the Excel template and generate a complete electronic table with various formats and styles.The above is several application examples of the JXLS framework in the development of Java, and there are corresponding Java code examples.
