PDF报表导出

使用IText PDF 类库导出:
1.导入依赖:

 <dependency>
            <groupId>com.lowagiegroupId>
            <artifactId>itextartifactId>
            <version>4.2.1version>
        dependency>
        <dependency>
            <groupId>com.itextpdfgroupId>
            <artifactId>itext-asianartifactId>
            <version>5.2.0version>
        dependency>

2.查询数据:

List wayBills = wayBillService.findAll(model);

3.导出pdf文件:

// 设置头信息
        ServletActionContext.getResponse().setContentType("application/pdf");
        String filename = "运单数据.pdf";
        String agent = ServletActionContext.getRequest()
                .getHeader("user-agent");
        filename = FileUtils.encodeDownloadFilename(filename, agent);
        ServletActionContext.getResponse().setHeader("Content-Disposition",
                "attachment;filename=" + filename);

        // 生成PDF文件
        Document document = new Document();
        PdfWriter.getInstance(document, ServletActionContext.getResponse()
                .getOutputStream());
        document.open();
        // 写PDF数据
        // 向document 生成pdf表格
        Table table = new Table(7);
        table.setWidth(100); // 宽度
        table.setBorder(1); // 边框
        table.getDefaultCell().setHorizontalAlignment(Element.ALIGN_CENTER); // 水平对齐方式
        table.getDefaultCell().setVerticalAlignment(Element.ALIGN_TOP); // 垂直对齐方式

        // 设置表格字体
        BaseFont cn = BaseFont.createFont("STSongStd-Light", "UniGB-UCS2-H",
                false);
        Font font = new Font(cn, 10, Font.HELVETICA, Color.BLACK);

        // 写表头
        table.addCell(buildCell("运单号", font));
        table.addCell(buildCell("寄件人", font));
        table.addCell(buildCell("寄件人电话", font));
        table.addCell(buildCell("寄件人地址", font));
        table.addCell(buildCell("收件人", font));
        table.addCell(buildCell("收件人电话", font));
        table.addCell(buildCell("收件人地址", font));
        // 写数据
        for (WayBill wayBill : wayBills) {
            table.addCell(buildCell(wayBill.getWayBillNum(), font));
            table.addCell(buildCell(wayBill.getSendName(), font));
            table.addCell(buildCell(wayBill.getSendMobile(), font));
            table.addCell(buildCell(wayBill.getSendAddress(), font));
            table.addCell(buildCell(wayBill.getRecName(), font));
            table.addCell(buildCell(wayBill.getRecMobile(), font));
            table.addCell(buildCell(wayBill.getRecAddress(), font));
        }
        // 将表格加入文档
        document.add(table);
        document.close();

JasperReport+IReport导出:
1.添加依赖:

  
        <dependency>
            <groupId>org.codehaus.groovygroupId>
            <artifactId>groovy-allartifactId>
            <version>2.2.0version>
        dependency>

        
        <dependency>
            <groupId>net.sf.jasperreportsgroupId>
            <artifactId>jasperreportsartifactId>
            <version>5.6.0version>
            <exclusions>
                <exclusion>
                    <groupId>com.lowagiegroupId>
                    <artifactId>itextartifactId>
                exclusion>
            exclusions>
        dependency> 

2.编写查询代码:

// 下载导出
        // 设置头信息
        ServletActionContext.getResponse().setContentType("application/pdf");
        String filename = "运单数据.pdf";
        String agent = ServletActionContext.getRequest()
                .getHeader("user-agent");
        filename = FileUtils.encodeDownloadFilename(filename, agent);
        ServletActionContext.getResponse().setHeader("Content-Disposition",
                "attachment;filename=" + filename);

        // 根据 jasperReport模板 生成pdf
        // 读取模板文件
        String jrxml = ServletActionContext.getServletContext().getRealPath(
                "/WEB-INF/jasper/waybill.jrxml");
        JasperReport report = JasperCompileManager.compileReport(jrxml);

        // 设置模板数据
        // Parameter变量
        Map paramerters = new HashMap();
        paramerters.put("company", "传智播客");
        // Field变量
        //根据要求查询的数据生成PDF
        JasperPrint jasperPrint = JasperFillManager.fillReport(report,
                paramerters, new JRBeanCollectionDataSource(wayBills));
        //根据IReport的SQL查询数据生成PDF
        JasperPrint jasperPrint2 = JasperFillManager.fillReport(report,
                paramerters, dataSource.getConnection());

        //System.out.println(wayBills);
        // 生成PDF客户端
        JRPdfExporter exporter = new JRPdfExporter();
        exporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperPrint);
        exporter.setParameter(JRExporterParameter.OUTPUT_STREAM,
                ServletActionContext.getResponse().getOutputStream());
        exporter.exportReport();// 导出

ps:
当我们不使用IReoort查询数据显示时,需要在ireport 添加符合查询对象属性的 Field
PDF没有数据:检查前台表单的提交方式是否是post;
PDF数据没有自动换行:检查在属性中是否设置了自动换行,手动在IReport中拓展行高,有没有为显示数据添加中文显示;

你可能感兴趣的:(java,PDF导出)