解决重定向：Cannot convert value of type 'SysRole' to required type 'String'

• 断点报错代码

            ra.addAttribute("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': no matching editors or conversion strategy found

• 解决：记错了应该是addFlashAttribute

            ra.addFlashAttribute("sysRole", sysRole);

结果