java.lang.ClassCastException:info.ShopBean at java.util.TreeMap.compare(Unknown Source) at java.utresponse.setContentType("text/html;setchar:UTF-8");PrintWriter out = response.getWriter();HttpSession session = request.getSession();Set set = new TreeS

来源：学生作业帮助网编辑：作业帮时间：2024/04/29 15:44:31

java.lang.ClassCastException:info.ShopBean at java.util.TreeMap.compare(Unknown Source) at java.utresponse.setContentType("text/html;setchar:UTF-8");PrintWriter out = response.getWriter();HttpSession session = request.getSession();Set set = new TreeS
java.lang.ClassCastException:info.ShopBean at java.util.TreeMap.compare(Unknown Source) at java.ut
response.setContentType("text/html;setchar:UTF-8");
PrintWriter out = response.getWriter();
HttpSession session = request.getSession();
Set set = new TreeSet();
for(int i=0;i