使用JasperReports接口动态更改StaticText背景颜色

// 导入所需的类
import net.sf.jasperreports.engine.JasperCompileManager;
import net.sf.jasperreports.engine.JasperFillManager;
import net.sf.jasperreports.engine.JasperPrint;
import net.sf.jasperreports.engine.JasperReport;
import net.sf.jasperreports.engine.design.JasperDesign;
import net.sf.jasperreports.engine.xml.JRXmlLoader;
import net.sf.jasperreports.view.JasperViewer;

import java.awt.Color;
import java.util.HashMap;
import java.util.Map;

public class JasperReportsExample {
    public static void main(String[] args) {
        try {
            // 加载报表模板
            JasperDesign jasperDesign = JRXmlLoader.load("report_template.jrxml");

            // 编译报表模板
            JasperReport jasperReport = JasperCompileManager.compileReport(jasperDesign);

            // 填充报表数据
            JasperPrint jasperPrint = JasperFillManager.fillReport(jasperReport, getParameters(), getDataSource());

            // 获取报表中的StaticText元素，并设置背景颜色
            jasperPrint.getPages().forEach(page -> {
                page.getElements().stream()
                        .filter(element -> element instanceof JRStaticText)
                        .map(element -> (JRStaticText) element)
                        .forEach(staticText -> staticText.setBackgroundColor(Color.RED));
            });

            // 显示报表预览
            JasperViewer.viewReport(jasperPrint);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    // 定义报表参数
    private static Map<String, Object> getParameters() {
        Map<String, Object> parameters = new HashMap<>();
        parameters.put("backgroundColor", Color.RED);
        return parameters;
    }

    // 定义报表数据源
    private static JRDataSource getDataSource() {
        // 返回报表数据源
    }
}