public Map<String, Object> getJasperReportParameters() { Map<String, Object> jasperReportParameters = Maps.newHashMap(); try { HttpServletRequest request = ServletActionContext.getRequest(); String reportId = request.getParameter("report"); File targetJasperFile = getTargetJasperFile(reportId); JasperReport jasperReport = (JasperReport) JRLoader.loadObject(targetJasperFile); // 根据模板定义转换处理传入参数类型 JRParameter[] params = jasperReport.getParameters(); for (Map.Entry<String, Object> val : reportParameters.entrySet()) { String key = val.getKey(); if (val.getValue() == null) { continue; } String[] vals = (String[]) val.getValue(); for (JRParameter param : params) { if (!param.isSystemDefined() && param.isForPrompting()) { String name = param.getName(); Class<?> clazz = param.getValueClass(); if (!name.equals(key)) { continue; } // TODO: 先初步添加集合处理,后续逐步添加数字、日期等类型转换处理 if (Collection.class.isAssignableFrom(clazz)) { // 集合类型参数处理,TODO: 可以考虑进一步添加param.getNestedType()处理 jasperReportParameters.put(key, vals); } else { // 其余情况把参数转换为普通字符串传入 jasperReportParameters.put(val.getKey(), StringUtils.join(vals, ",")); } } } } // 设置一些缺省属性供模板内部使用 jasperReportParameters.put("_RPT_ID", reportId); jasperReportParameters.put("_RPT_FORMAT", this.getFormat()); String url = request.getRequestURL().toString(); logger.debug("Report URL: " + url); jasperReportParameters.put("_RPT_URL", url); } catch (Exception e) { logger.error(e.getMessage(), e); throw new WebException(e.getMessage(), e); } return jasperReportParameters; }