我尝试使用DynamicJasper生成一个Jasper报告,这只是一个图表,上面没有任何表格。似乎不是隐藏列或抑制表的方法。我只选择生成图表有哪些选择?我会接受一个不使用DynamicJasper的解决方案,只使用JasperReports java API。
public void go() throws ColumnBuilderException, ClassNotFoundException, JRException {
super();
final AbstractColumn areas = ColumnBuilder.getNew()
.setColumnProperty("area", String.class.getName())
.setTitle("Area")
.setWidth(30)
.build();
final AbstractColumn exercises = ColumnBuilder.getNew()
.setColumnProperty("exercises", Integer.class.getName())
.setTitle("Exercises")
.setWidth(30)
.build();
final DynamicReportBuilder reportBuilder = new DynamicReportBuilder();
reportBuilder.addColumn(areas);
reportBuilder.addColumn(exercises);
reportBuilder.setUseFullPageWidth(true);
final GroupBuilder groupBuilder = new GroupBuilder();
groupBuilder.setCriteriaColumn((PropertyColumn) areas);
groupBuilder.setGroupLayout(GroupLayout.EMPTY);
final DJGroup group = groupBuilder.build();
reportBuilder.addGroup(group);
reportBuilder.addChart(this.chart((PropertyColumn) areas, exercises));
final DynamicReport dynamicReport = reportBuilder.build();
final JasperPrint jasperPrint =
DynamicJasperHelper.generateJasperPrint(
dynamicReport,
new ClassicLayoutManager(),
new JRBeanCollectionDataSource(this.getData()));
/* PDF */
final JRPdfExporter exporter = new JRPdfExporter();
exporter.setExporterInput(new SimpleExporterInput(jasperPrint));
exporter.setExporterOutput(new SimpleOutputStreamExporterOutput("/tmp/my.pdf"));
exporter.exportReport();
}
答案 0 :(得分:1)
如果您必须DynamicJasper
,则可以使用DynamicReports库进行试用
我只对两者进行了一些测试,但我发现DynamicReports
更容易使用。
我的测试中的示例代码,仅包含图表的报告(或取消注释.columns
部分以取回列):
// First simple test
public static void createDynamicReportTest1()
{
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);
// title, field name data type
TextColumnBuilder<String> itemColumn = col.column("Item", "item", type.stringType());
TextColumnBuilder<Integer> quantityColumn = col.column("Quantity", "quantity", type.integerType());
TextColumnBuilder<BigDecimal> unitPriceColumn = col.column("Unit price", "unitprice", type.bigDecimalType());
//price = unitPrice * quantity
TextColumnBuilder<BigDecimal> priceColumn = unitPriceColumn.multiply(quantityColumn).setTitle("Price");
PercentageColumnBuilder pricePercColumn = col.percentageColumn("Price %", priceColumn);
TextColumnBuilder<Integer> rowNumberColumn = col.reportRowNumberColumn("No.")
//sets the fixed width of a column, width = 2 * character width
.setFixedColumns(2)
.setHorizontalAlignment(HorizontalAlignment.CENTER);
AbstractBaseChartBuilder chart = cht.barChart()
.setTitle("Bar chart")
//.setTitleFont(boldFont)
.setCategory(itemColumn)
.series(
cht.serie(quantityColumn))
.setCategoryAxisFormat(
cht.axisFormat().setLabel("Item"));
try {
report()//create new report design
.setColumnTitleStyle(columnTitleStyle)
.highlightDetailEvenRows()
// .columns(//add columns
// rowNumberColumn, itemColumn, quantityColumn, unitPriceColumn, priceColumn, pricePercColumn)
.title(cmp.text("Getting started").setStyle(boldCenteredStyle))//shows report title
.summary(chart)
.pageFooter(cmp.pageXofY().setStyle(boldCenteredStyle))//shows number of page at page footer
.setDataSource(createDRDataSource())//set datasource
.show();//create and show report
} catch (Exception e) {
e.printStackTrace();
}
}
public static JRDataSource createDRDataSource() {
DRDataSource dataSource = new DRDataSource("item", "quantity", "unitprice");
dataSource.add("Notebook", 1, new BigDecimal(500));
dataSource.add("DVD", 5, new BigDecimal(30));
dataSource.add("DVD", 1, new BigDecimal(28));
dataSource.add("DVD", 5, new BigDecimal(32));
dataSource.add("Book", 3, new BigDecimal(11));
dataSource.add("Book", 1, new BigDecimal(15));
dataSource.add("Book", 5, new BigDecimal(10));
dataSource.add("Book", 8, new BigDecimal(9));
return dataSource;
}
有关更多示例,请查看此处: dynamicreports.org examples
答案 1 :(得分:1)
而不是if ([messageStr length] > 0) {
NSString *jabberID = [UserDefaults stringForKey:kUserID];
NSString *userName = [NSString stringWithFormat:@"%@@%@", jabberID, kServerName];
XMPPMessage * message = [[XMPPMessage alloc] init];
[message addAttributeWithName:@"body" stringValue:messageStr];
[message addAttributeWithName:@"sender" stringValue:userName];
[DELEGATE.xmppClient.xmppRoom sendMessage:message];
self.txtMessageField.text = @"";
NSMutableDictionary *m = [[NSMutableDictionary alloc] init];
[m setObject:[messageStr substituteEmoticons] forKey:@"msg"];
[m setObject:@"you" forKey:@"sender"];
[m setObject:[NSString getCurrentTime] forKey:@"time"];
[self.messages addObject:m];
[self.messagesTableView reloadData];
}
使用addColumn
。感谢此评论的Petter Friberg
答案 2 :(得分:0)
我知道这是一个老问题,但是在花了数小时试图找出解决方案之后,我想分享我的解决方案。
不幸的是,在使用DynamicJasper 5.1.0时,以上两个答案对我不起作用。 DynamicReports似乎不再维护并且链接断开,仅使用addField而不是addColumn会导致无用的“重复声明参数:dataset_null_chart”错误-尽管我只是在事实中,这似乎与重复图表有关使用单个图表。 (话虽这么说,我很想听听别人是否/如何使用DynamicJasper 5.1.x克服了这些问题)
所以我想出了以下解决方案-创建一个不呈现表的LayoutManager
:
public class NoTableLayoutManager extends ClassicLayoutManager {
@Override
protected List<AbstractColumn> getVisibleColumns() {
return new ArrayList<>(); // hide all columns
}
}
然后在生成JasperPrint
对象时使用它:
JasperPrint print = DynamicJasperHelper.generateJasperPrint(report, new NoTableLayoutManager(), data);
这对于我创建不带表的堆积条形图的简单方案非常适用。隐藏表时,我没有尝试过更复杂的报表,所以我不知道这在每种情况下是否都可以使用,但是至少在DynamicJasper 5.1.0中,它应该可以在您要求的情况下使用。