cn.com.report.HtmlServlet3.java Source code

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Here is the source code for cn.com.report.HtmlServlet3.java

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/**
 * DynamicReports - Free Java reporting library for creating reports dynamically
 *
 * Copyright (C) 2010 Ricardo Mariaca
 * http://dynamicreports.sourceforge.net
 *
 * This file is part of DynamicReports.
 *
 * DynamicReports is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * DynamicReports is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with DynamicReports. If not, see <http://www.gnu.org/licenses/>.
 */

package cn.com.report;

import static net.sf.dynamicreports.report.builder.DynamicReports.col;
import static net.sf.dynamicreports.report.builder.DynamicReports.export;
import static net.sf.dynamicreports.report.builder.DynamicReports.report;
import static net.sf.dynamicreports.report.builder.DynamicReports.type;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.HashMap;
import java.util.Map;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.io.FileUtils;

import net.sf.dynamicreports.jasper.builder.JasperReportBuilder;
import net.sf.dynamicreports.jasper.builder.export.JasperPdfExporterBuilder;
import net.sf.dynamicreports.report.builder.datatype.BigDecimalType;
import net.sf.dynamicreports.report.datasource.DRDataSource;
import net.sf.dynamicreports.report.exception.DRException;
import net.sf.jasperreports.engine.JRDataSource;

/**
 * @author Ricardo Mariaca (dynamicreports@gmail.com)
 */
@WebServlet("/zitiServlet")
public class HtmlServlet3 extends HttpServlet {
    private static final long serialVersionUID = 1L;

    @Override
    public void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        InputStream is = HtmlServlet3.class.getResourceAsStream("templatedesign1.jrxml");
        resp.setContentType("application/pdf");

        OutputStream out = resp.getOutputStream();
        JasperPdfExporterBuilder pdfExporter = export.pdfExporter(out);
        try {
            JasperReportBuilder report = report();
            report.setTemplate(Templates.reportTemplate).setParameters(createParameters()).setTemplateDesign(is)
                    .columns(col.column("Item", "item", type.stringType()),
                            col.column("?", "quantity", type.integerType()),
                            col.column("Unit price", "unitprice", type.integerType()))
                    //.title(Templates.createTitleComponent("JasperTemplateDesign1"))
                    .setDataSource(createDataSource())
            //           .show(false)
            ;
            ;
            File tempFile = File.createTempFile("web", ".pdf");
            report.toPdf(new FileOutputStream(tempFile));
            out.write(FileUtils.readFileToByteArray(tempFile));
            System.out.println("%%%%%%%%%%" + tempFile.getCanonicalPath());
            //         report.toPdf(pdfExporter);//?pdf?  
        } catch (DRException e) {
            e.printStackTrace();
        }
        out.close();
    }

    private Map<String, Object> createParameters() {
        Map<String, Object> parameters = new HashMap<String, Object>();
        parameters.put("zhongwen", "");
        parameters.put("amhl", "abc");
        return parameters;
    }

    @Override
    public void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        doGet(req, resp);
    }

    private JRDataSource createDataSource() {
        DRDataSource dataSource = new DRDataSource("item", "quantity", "unitprice");
        for (int i = 0; i < 10; i++) {
            dataSource.add("Book", (int) (Math.random() * 10) + 1,
                    (int) (Math.random() * 100) + 1);
        }
        return dataSource;
    }
}