java - 动态报告详细信息部分存在页面高度错误

Question

我正在使用 Dynamicreports 创建报告。这是我的代码。当我运行它时出现错误。我的内容太大了(详细)。请帮我解决这个问题。当我的内容(详细信息)为 10 行时，这段代码运行良好。但是当我的内容(详细信息)很大时，它会出错。

错误:

net.sf.dynamicreports.report.exception.DRException: net.sf.jasperreports.engine.design.JRValidationException: Report design not valid : 
     1. The detail section, the page and column headers and footers and the margins do not fit the page height.
    at net.sf.dynamicreports.jasper.builder.JasperReportBuilder.toJasperReport(JasperReportBuilder.java:279)
    at net.sf.dynamicreports.jasper.builder.JasperReportBuilder.toJasperPrint(JasperReportBuilder.java:309)
    at dynamicjusper.NewJFrame.jButton5ActionPerformed(NewJFrame.java:606)
    at dynamicjusper.NewJFrame.access$400(NewJFrame.java:78)
    at dynamicjusper.NewJFrame$5.actionPerformed(NewJFrame.java:164) 

+等等.

代码:

    StyleBuilder boldStyle = stl.style().bold();
    StyleBuilder boldCenteredStyle = stl.style(boldStyle).setHorizontalAlignment(HorizontalAlignment.CENTER);
    StyleBuilder columnTitleStyle = stl.style(boldCenteredStyle).setBorder(stl.pen1Point()).setBackgroundColor(Color.LIGHT_GRAY);
    FontBuilder boldFont = stl.fontArialBold().setFontSize(12);

    StyleBuilder titleStyle        = stl.style(boldCenteredStyle).setVerticalAlignment(VerticalAlignment.MIDDLE).setFontSize(15);
    StyleBuilder DetailHeaderStyle = stl.style(boldStyle).setForegroundColor(Color.BLUE);

    try {
        JasperReportBuilder report = report();
        report.setDefaultFont(stl.fontCourierNew().setFontSize(8));


        //page header
        report.pageHeader(cmp.horizontalList()
           .add(
            cmp.image("./image.gif").setFixedDimension(80, 80).setHorizontalAlignment(HorizontalAlignment.LEFT),
            cmp.text("TEST").setStyle(titleStyle).setHorizontalAlignment(HorizontalAlignment.LEFT),
            cmp.text("Sub Text").setStyle(titleStyle).setHorizontalAlignment(HorizontalAlignment.RIGHT))
            .newRow()
            .add(cmp.filler().setStyle(stl.style().setTopBorder(stl.pen2Point())).setFixedHeight(10)));



        String Content = jTextArea1.getText();

    String[] PAGECONTENT = Content.split("");

    for (int i = 0; i < PAGECONTENT.length; i++) {

        String string = PAGECONTENT[i];


        String Line1;


        String[] dataandheader= string.split("-----------------------------------------------------------------------------------------------------------------------------------");


        for (int j = 0; j < dataandheader.length; j++) {
            String string1 = dataandheader[j];


            if(j<1){

                 try {
            Scanner sc = new Scanner(string1);
            while (sc.hasNextLine()) {
                Line1 = sc.nextLine();
            //Page Detail
           report.detail(cmp.horizontalList()

                   .newRow()
                   .add(cmp.text(Line1).setStyle(DetailHeaderStyle))

                   );

            }

        } catch (Exception e) {
            e.printStackTrace();
        }

            }else{

                if(j>0 && j<dataandheader.length){
            //Page Detail
           report.detail(cmp.horizontalList()

                   .newRow()
                  // .add(cmp.text(text))
                   .add(cmp.filler().setStyle(stl.style().setTopBorder(stl.pen2Point())).setFixedHeight(5))

                   );

            }

                 try {
            Scanner sc = new Scanner(string1);
            while (sc.hasNextLine()) {


                Line1 = sc.nextLine();

                //Page Detail
           report.detail(cmp.horizontalList()

                   .newRow()
                   .add(cmp.text(Line1))


                   );
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
            }

        }

    }
        //page footer
        report.pageFooter(cmp.pageXofY());//shows number of page at page footer

        report.setDataSource(new JREmptyDataSource());//set datasource

       JRViewer jrviwer = new JRViewer(report.toJasperPrint());

       ((JPanel)jrviwer.getComponent(0)).remove(0); // remove save button
       ((JPanel)jrviwer.getComponent(0)).remove(1); // remove refresh button

       JFrame jf = new JFrame();
       jf.setTitle("Test viwer");
       jf.getContentPane().add(jrviwer);
       jf.validate();
       jf.setVisible(true);
       jf.setSize(new Dimension(800,600));
       jf.setLocation(300,100);
       jf.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);



    } catch (Exception e) {
        e.printStackTrace();
    }

Answer 1

这是动态报表中非常常见的问题，每当您详细使用任何组件时，页眉或页脚的高度或宽度超过页面尺寸。

尝试一件事，将详细组件划分为水平列表组件 block (将它们划分为最大部分)。我这样做并逻辑地处理它们。您应该更愿意添加

report.detail(cmp1);

然后

report.detail(cmp2); 

当您不确定高度时，不要将这 2 个组件添加到一个包含 cmp1 和 cmp2 的组件“cmp”中。