将整个sql查询作为参数传递给jasper报告

Question

我想将整个sql查询作为参数传递给jasper报告。我尝试使用$ P {QUERY}，但它给了我一个mysql语法错误异常。我希望它在运行时通过。有谁知道怎么做？

示例代码：

try {
        Map<String, Object> map = new HashMap<>();
        Connection conn = DatabaseConnection.getInstance().getConnection();

        map.put("QUERY", "Select u.name, u.status from user_info u where u.user_name = 'Thanuj'");

        JasperReport report = JasperCompileManager.compileReport("report1.jrxml");
        JasperPrint jp = JasperFillManager.fillReport(report, map, conn);
        JasperViewer.viewReport(jp, false);
    } catch (JRException ex) {
        Logger.getLogger(ReportTest.class.getName()).log(Level.SEVERE, null, ex);
    } catch (SQLException ex) {
        Logger.getLogger(ReportTest.class.getName()).log(Level.SEVERE, null, ex);
    } catch (ClassNotFoundException ex) {
        Logger.getLogger(ReportTest.class.getName()).log(Level.SEVERE, null, ex);
    }

Answer 1

我在同事的帮助下找到了答案。我必须在jasper报告的xml文件（ex; report.jrxml）中将参数（$ P {QUERY}）更改为（$ P！{QUERY}）