java - 使用 Jasper Report 导出为带有嵌入图像的单个 HTML

Question

Jasper Report 可以导出为带有嵌入图像的单个 HTML 吗？

我将 jasper 报告输出为单个 Excel 文件、PDF、RTF。但是可以多人播放 HTML 文件。我管理的不是单个报告文件，而是 HTML 格式的许多文件和文件夹对我来说很麻烦。

Answer 1

解决方案:

Map<String, String> images = new HashMap<>();

SimpleHtmlExporterOutput simpleHtmlExporterOutput = new SimpleHtmlExporterOutput(outputStream);
simpleHtmlExporterOutput.setImageHandler(new HtmlResourceHandler() {

            @Override
            public void handleResource(String id, byte[] data) {
                System.err.println("id" + id);
                images.put(id, "data:image/jpg;base64," + Base64.encodeBytes(data));
            }

            @Override
            public String getResourcePath(String id) {
                return images.get(id);
            }
        });

完整代码:

package com.test.report;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.util.HashMap;
import java.util.Map;

import net.sf.jasperreports.engine.JasperFillManager;
import net.sf.jasperreports.engine.JasperPrint;
import net.sf.jasperreports.engine.JasperReport;
import net.sf.jasperreports.engine.data.JRXmlDataSource;
import net.sf.jasperreports.engine.export.HtmlExporter;
import net.sf.jasperreports.engine.export.HtmlResourceHandler;
import net.sf.jasperreports.export.SimpleExporterInput;
import net.sf.jasperreports.export.SimpleHtmlExporterOutput;
import net.sf.jasperreports.export.SimpleHtmlReportConfiguration;

import org.apache.commons.io.FileUtils;
import org.junit.Test;
import org.olap4j.impl.Base64;

import com.artech.reportservice.reports.ReportType;

public class ReportTest {
    Map<String, String> images = new HashMap<>();

    @Test
    public void test() throws Exception {
        // String outFileName = "test.html";

        String xmlFileLocation = "/Users/skozlic/dev/VacationToolProject/wokspace/ReportService/src/test/resources/machineReportTestFile.xml";

        JasperReport reportTemplate = ReportType.MPM.getReportTemplate();
        JRXmlDataSource jrxmlds = ReportType.MPM.getReportDateSource(xmlFileLocation);
        JasperPrint jasperPrint = JasperFillManager.fillReport(reportTemplate, null, jrxmlds);

        HtmlExporter exporterHTML = new HtmlExporter();
        SimpleExporterInput exporterInput = new SimpleExporterInput(jasperPrint);
        exporterHTML.setExporterInput(exporterInput);
        SimpleHtmlReportConfiguration reportExportConfiguration = new SimpleHtmlReportConfiguration();

        exporterHTML.setConfiguration(reportExportConfiguration);
        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();

        SimpleHtmlExporterOutput simpleHtmlExporterOutput = new SimpleHtmlExporterOutput(outputStream);
        simpleHtmlExporterOutput.setImageHandler(new HtmlResourceHandler() {

            @Override
            public void handleResource(String id, byte[] data) {
                System.err.println("id" + id);
                images.put(id, "data:image/jpg;base64," + Base64.encodeBytes(data));
            }

            @Override
            public String getResourcePath(String id) {
                return images.get(id);
            }
        });
        exporterHTML.setExporterOutput(simpleHtmlExporterOutput);

        exporterHTML.exportReport();
        FileUtils.writeByteArrayToFile(new File("test.html"), outputStream.toByteArray());

    }
}