Use Excel TMPLER in the Java Library to achieve custom reporting
Use Excel Templateer in the Java Library to implement custom reports
Excel Templateer is a powerful Java class library that helps developers to generate custom Excel reports based on the template.In projects, we often need to dynamically generate various forms of reports according to business needs, such as sales reports and statistical statements.Using Excel Templateer can simplify the process of reporting and improve development efficiency.
First, we need to prepare an Excel template file, which contains the format and layout of the report.You can use Microsoft Excel or other electronic meter software to create this template file, and keep the editing part as the insertion point of the report data.
Next, we need to use Excel Templateer to read template files and fill in the report data.The following is an example code:
import net.sf.jxls.transformer.XLSTransformer;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.HashMap;
import java.util.Map;
public class ExcelReportGenerator {
public static void main(String[] args) {
try {
// Read the template file
InputStream input = new FileInputStream("report_template.xlsx");
// Create report data
Map<String, Object> data = new HashMap<>();
data.put ("title", "Sales Report");
data.put("date", "2021-08-01");
data.put("totalSales", 1000000);
// Use Excel Templateer to fill in data to the template
XLSTransformer transformer = new XLSTransformer();
org.apache.poi.ss.usermodel.Workbook workbook = transformer.transformXLS(input, data);
// Save the generated report file
OutputStream output = new FileOutputStream("sales_report.xlsx");
workbook.write(output);
output.close();
System.out.println ("Reporting successfully!");
} catch (Exception e) {
e.printStackTrace();
System.out.println ("Reporting failed!");
}
}
}
In the above code, we first read the template file `reportstream` in` FileInputStream` `Report_template.xlsx`, and then created a` HashMap` to store the report data.Next, we use the `transformxls` method of the` xlstransformer` class to fill the data into the template to get a `Workbook` object.Finally, we use the `FileoutPutstream` to save the generated report files to the local.
It should be noted that the code in the above example is just a simple example. In practical applications, we may need to dynamically generate and fill the reporting data based on the type and data structure of the report.
Summarize:
Excel Templater is a powerful Java class library that helps us generate custom Excel reports.By reading template files and filling in data, we can quickly generate various types of reports.Using Excel Templateer can greatly simplify the process of reporting and improve development efficiency.
