HTTP Status 500 - For input string: "",哪位兄弟解答下
java.lang.NumberFormatException: For input string: ""
at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
at java.lang.Integer.parseInt(Integer.java:592)
at java.lang.Integer.valueOf(Integer.java:766)
at com.imooc.message.service.impl.MessageServiceImpl.deleteBatch(MessageServiceImpl.java:33)
at com.imooc.message.servlet.DeleteBatchServlet.doPost(DeleteBatchServlet.java:28)
service层的代码: