JasperReports概述

JasperReports快速体验#

本小节我们先通过一个快速体验来感受一下JasperReports的开发过程。

第一步：创建maven工程，导入JasperReports的maven坐标

<dependency>
  <groupId>net.sf.jasperreports</groupId>
  <artifactId>jasperreports</artifactId>
  <version>6.8.0</version>
</dependency>
<dependency>
    <groupId>junit</groupId>
    <artifactId>junit</artifactId>
    <version>4.12</version>
</dependency>

第二步：将提前准备好的jrxml文件复制到maven工程中(后面会详细讲解如何创建jrxml文件)

第三步：编写单元测试，输出PDF报表

@Test
public void testJasperReports()throws Exception{
    String jrxmlPath = 
        "D:\\ideaProjects\\projects111\\jasperdemo\\src\\main\\resources\\demo.jrxml";
    String jasperPath = 
        "D:\\ideaProjects\\projects111\\jasperdemo\\src\\main\\resources\\demo.jasper";

    //编译模板
    JasperCompileManager.compileReportToFile(jrxmlPath,jasperPath);

    //构造数据
    Map paramters = new HashMap();
    paramters.put("reportDate","2019-10-10");
    paramters.put("company","itcast");
    List<Map> list = new ArrayList();
    Map map1 = new HashMap();
    map1.put("name","xiaoming");
    map1.put("address","beijing");
    map1.put("email","xiaoming@itcast.cn");
    Map map2 = new HashMap();
    map2.put("name","xiaoli");
    map2.put("address","nanjing");
    map2.put("email","xiaoli@itcast.cn");
    list.add(map1);
    list.add(map2);

    //填充数据
    JasperPrint jasperPrint = 
        JasperFillManager.fillReport(jasperPath, 
                                     paramters, 
                                     new JRBeanCollectionDataSource(list));

    //输出文件
    String pdfPath = "D:\\test.pdf";
    JasperExportManager.exportReportToPdfFile(jasperPrint,pdfPath);
}