無法批量刪除，求詳細解決辦法。
HTTP Status 500 - For input string: "on"
type?Exception report
message?For input string: "on"
description?The server encountered an internal error that prevented it from fulfilling this request.
exception
java.lang.NumberFormatException: For input string: "on"
java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
java.lang.Integer.parseInt(Integer.java:580)
java.lang.Integer.valueOf(Integer.java:766)
com.kelvin.service.MaintainService.deleteBatch(MaintainService.java:29)
com.kelvin.servlet.DeleteBatchServlet.doGet(DeleteBatchServlet.java:24)
com.kelvin.servlet.DeleteBatchServlet.doPost(DeleteBatchServlet.java:32)
javax.servlet.http.HttpServlet.service(HttpServlet.java:648)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
note?The full stack trace of the root cause is available in the Apache Tomcat/8.5.11 logs.
Apache Tomcat/8.5.11
控制臺沒報錯。
2017-09-10
在<input type="checkbox" name="id" />中加入value="${message.id }"，當你不加value時，當checkbox選中時返回的是on
2017-04-24
看報錯是int String轉換時出現的異常，是不是字符串有"on"時你想轉換成int