原代码:
String ur = "jar:file:\D:\test\one\two.jar!\" + name + ".class"; System.out.println(ur); // jar:file:D: estone wo.jar!MyCalcSalary.class URL url = new URL(ur);
将D盘后的\修改为/即可
String ur = "jar:file:\D:/test/one/two.jar!/" + name + ".class";
jar:file:D:/test/one/two.jar!/MyCalcSalary.class