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;
}
