Question

我必须在服务器端（Tomcat + gwt）上创建一个JasperReport。我尝试运行一个hello-world

public class AuthorReport {
 public static void generate() {
try {
  String reportSource = "resources/authorReport.jasper";

  JasperReport jasperReport = JasperCompileManager
    .compileReport(reportSource);

  JasperPrint jasperPrint = JasperFillManager.fillReport(jasperReport,
    new HashMap(), new JREmptyDataSource());

  JasperExportManager.exportReportToHtmlFile(jasperPrint, "hello_report.html");


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

我没有例外，但我无法知道生成的文件在哪里以及是否生成它。

也许我必须以某种方式集成Tomcat和JasperReports？

Answer 1

您必须在JasperFillManager.fillReport的第二个参数中指定此位置。

public class AuthorReport {

    public static void generate() {
        try {
           String reportSource = "resources/authorReport.jasper";

           JasperReport jasperReport = JasperCompileManager.compileReport(reportSource);

           Map<String, Object> params = new HashMap<String, Object>();
           params.put(JRParameter.REPORT_FILE_RESOLVER, new SimpleFileResolver(new File(youPath)));

           JasperPrint jasperPrint = JasperFillManager.fillReport(jasperReport, params, new JREmptyDataSource());

           JasperExportManager.exportReportToHtmlFile(jasperPrint, "hello_report.html");
       } catch (Exception e) {
           e.printStackTrace();
       }
   }
}

祝你好运！

Jasper-Report服务器端保存

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