Question

JasperReport-构建大量JRXML报表后使用DynamicJasper

问题概述

当前，我的Java软件使用已编译的.jrxml文件来生成报告。但是，用户抱怨他们想要自定义报告。基本上是这样，所以我发现了DynamicJasper。问题在于，我先前构建的现成的.jasper报告具有自己的布局，最终我对其进行了调整，为通过参数发送的徽标插入了图像占位符。

问题

是否可以通过简单的方式复制样式或重新使用这些先前构建的报表布局？

据我所知，我使用名为Cherry的Jasper模板构建了这些报告。对于某些人，我使用风景，对于其他人，我使用肖像类型。

由于问题本身的限制，我不认为这个问题是重复的：我无法将每个报告重建为DynamicJasper，也不能大胆地更改布局。

参考

How to use jrxml file as design template in DynamicJasper

How to get same styles in DynamicReports and JasperReports

Answer 1

所以要回答我自己的问题，这是一个食谱。

1º您拿下jrxml并按照：进行清理： http://dynamicjasper.com/2010/10/06/how-to-use-custom-jrxml-templates/

基本上需要：

模板必须没有组，如果满足以下条件，DynamicJAsper将创建它们：
详细信息栏必须为空：DynamicJasper将在详细信息中使用带，则将删除任何先前存在的元素。
每个页面的大小和方向都需要一个模板：这是
因为DJ知道如何安排他创建的元素，但不知道
现有的。

2º您调用setTemplateFile方法：

 public DynamicReportBuilder setTemplateFile(String path,
                                                         boolean importFields,
                                                         boolean importVariables,
                                                         boolean importParameters,
                                                         boolean importDatasets)

带有必需的布尔标志。这些布尔标志将允许您加载或不加载在jrxml上设置的参数，字段，变量和数据集。

在下面，我附上一个模拟示例。但是，您将需要自己的jrxml文件进行测试。

public class TestReport {

    protected static JasperPrint jp;
    protected static JasperReport jr;
    protected static Map params = new HashMap();
    protected static DynamicReport dr;

    public static void main(String args[]) throws SQLException, ColumnBuilderException, ClassNotFoundException {

        TestReport t = new TestReport();
        t.createReport();

    }

    public void createReport() throws SQLException, ColumnBuilderException, ClassNotFoundException {

        ArrayList<Fruit> createMockDataset = createMockDataset();

        Style titleStyle = new Style();
        titleStyle.setHorizontalAlign(HorizontalAlign.CENTER);
        titleStyle.setFont(Font.ARIAL_SMALL_BOLD);

        Style dataStyle = new Style();
        dataStyle.setHorizontalAlign(HorizontalAlign.CENTER);
        dataStyle.setFont(Font.ARIAL_SMALL);
        dataStyle.setBlankWhenNull(true);

        final List items = SortUtils.sortCollection(createMockDataset, Arrays.asList(new String[]{"name", "description"}));

        FastReportBuilder drb = new FastReportBuilder();
        drb.setTemplateFile("templatePortrait.jrxml", true, true, true, true);
        drb.addColumn("name", "name", String.class.getName(), 30, dataStyle)
                .addColumn("description", "description", String.class.getName(), 50, dataStyle)
                .setTitle("Report")
                .setSubtitle("")
                .setPrintBackgroundOnOddRows(true)
                .setUseFullPageWidth(true);



        DynamicReport dynamicReport = drb.build();

        dynamicReport.setTitleStyle(titleStyle);

        HashMap parametros = new HashMap();
        parametros.put("dataRelatorio", MyTools.getDataPorExtenso());

        doReport(dynamicReport, items, parametros);
    }

    public void doReport(final DynamicReport _report, final Collection _data, HashMap parametros) {
        try {
            JRDataSource beanCollectionDataSource = new JRBeanCollectionDataSource(_data);

            JasperPrint jasperPrint = DynamicJasperHelper.generateJasperPrint(_report, new ClassicLayoutManager(), beanCollectionDataSource, parametros);

            JasperViewer.viewReport(jasperPrint);
        } catch (JRException ex) {
            ex.printStackTrace();
        }
    }


    public ArrayList<Fruit> createMockDataset() {
        ArrayList<Fruit> fruits = new ArrayList<>();

        Fruit f1 = new Fruit();
        f1.name = "Apple X1";
        f1.description = "Yummy yummy apple for the stackoverflow readers 1";

        Fruit f2 = new Fruit();
        f2.name = "Apple Ag";
        f2.description = "Yummy yummy apple for the stackoverflow readers 2";

        Fruit f3 = new Fruit();
        f3.name = "Apple Mn";
        f3.description = "Yummy yummy apple for the stackoverflow readers 3";

        Fruit f4 = new Fruit();
        f4.name = "Apple O2";
        f4.description = "Yummy yummy apple for the stackoverflow readers 4";

        //Evaluations for f1
        for (int i = 0; i < 4; i++) {
            Evaluation e = new Evaluation();
            e.id = i;
            e.score = Math.random() * 10;
            f1.evaluations.add(e);
        }

        //evaluations for f4
        for (int i = 0; i < 4; i++) {
            Evaluation e = new Evaluation();
            e.id = i;
            e.score = Math.random() * 10;
            f4.evaluations.add(e);
        }

        fruits.add(f1);
        fruits.add(f2);
        fruits.add(f3);
        fruits.add(f4);

        return fruits;

    }

    public class Fruit {

        public String name;
        public String description;
        public ArrayList<Evaluation> evaluations = new ArrayList<Evaluation>();

        public Fruit() {

        }

        public Fruit(String name, String description) {
            this.name = name;
            this.description = description;
        }

        public String getName() {
            return name;
        }

        public void setName(String name) {
            this.name = name;
        }

        public String getDescription() {
            return description;
        }

        public void setDescription(String description) {
            this.description = description;
        }

        public ArrayList<Evaluation> getEvaluations() {
            return evaluations;
        }

        public void setEvaluations(ArrayList<Evaluation> evaluations) {
            this.evaluations = evaluations;
        }

    }

    public class Evaluation {

        public int id;
        public double score;

        public Evaluation() {

        }

        public Evaluation(int id, double score) {
            this.id = id;
            this.score = score;
        }

        public int getId() {
            return id;
        }

        public void setId(int id) {
            this.id = id;
        }

        public double getScore() {
            return score;
        }

        public void setScore(double score) {
            this.score = score;
        }

    }

}

JasperReport-构建了许多JRXML报告后使用DynamicJasper

1 个答案: