Jasperreport + ireport 无法取得路径解决办法（unix操作系统，weblogic服务）

??????? ?Jasperreport report;?????????

?

??????? ?Map parameters = new HashMap();?? //报表变量

?????? ? List<PaymentNoticeBean> paymentNotices =***;? //报表数据

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?????????//子报表数据源
??????? ?parameters.put("datasetsub",new net.sf.jasperreports.engine.data.JRBeanCollectionDataSource(paymentNotices));
????? ???//子报表参数
????? ??parameters.put("paramsub",parameters);

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???????? //得到class根目录
????????? String classes_root= this.getClass().getClassLoader().getResource("/").getPath();
????????? String realPath = "/";
????????? //class根目录向上两级，跳过/WEB-INF/class
????????? for(int i=1;i<classes_root.split("/").length;i++) {
?????????? if(i == classes_root.split("/").length-2){
??????????? break;
?????????? }
?????????? realPath +=classes_root.split("/")[i]+"/";
????????? }
????????? realPath = realPath + "***/***/";? //子报表所在文件夹 绝对路径
??????????
?????????parameters.put("pathSubJasper",realPath);

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???????? report.setSrc("/***mainReport.jasper");

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???????? report.setParameters(parameters);
??????? ?net.sf.jasperreports.engine.data.JRBeanCollectionDataSource ds = new net.sf.jasperreports.engine.data.JRBeanCollectionDataSource(
?????paymentNotices);
????? ??report.setDatasource(ds);
????? ??report.setType("html");
?????? ?report.setVisible(true);