• 断点报错代码
("sysRole", sysRole);

ra就是RedirectAttributes

  • 具体报错如下
org.springframework.beans.ConversionNotSupportedException: Failed to convert value of type 'cn.hctech2006.boot.bootmvc.bean.SysRole' to required type 'java.lang.String'; nested exception is java.lang.IllegalStateException: Cannot convert value of type 'cn.hctech2006.boot.bootmvc.bean.SysRole' to required type 'java.lang.String':
  • 解决：记错了应该是addFlashAttribute
("sysRole", sysRole);

结果

解决重定向：Cannot convert value of type