org.apache.shiro.authc.UsernamePasswordToken - null, rememberMe=false

package com.hbue.demo2;

import com.hbue.demo2.model.Permission;
import com.hbue.demo2.model.Role;
import com.hbue.demo2.model.User;
import com.hbue.demo2.service.UserService;
import org.apache.shiro.authc.*;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.authz.SimpleAuthorizationInfo;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.subject.PrincipalCollection;
import org.apache.shiro.util.CollectionUtils;
import org.springframework.beans.factory.annotation.Autowired;

import java.util.ArrayList;
import java.util.List;
import java.util.Set;

/**
 * 定义自定义授权类
 */
public class AuthRealm extends AuthorizingRealm {

    @Autowired
    private UserService userService;

    //授权
    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {
        User user=(User) principalCollection.fromRealm(this.getClass().getName()).iterator().next();
        List<String> permissionList=new ArrayList<>();
        Set<Role> roleSet=user.getRoles();
        if (!CollectionUtils.isEmpty(roleSet)){
            for (Role role:roleSet){

                Set<Permission> permissionSet=role.getPermissions();
                if (!CollectionUtils.isEmpty(permissionSet)){
                    for (Permission permission:permissionSet){
                        permissionList.add(permission.getName());
                    }
                }
            }
        }
        SimpleAuthorizationInfo info=new SimpleAuthorizationInfo();
        info.addStringPermissions(permissionList);
        return info;
    }

    //认证登陆
    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {
        UsernamePasswordToken usernamePasswordToken=(UsernamePasswordToken) token;
        String username=usernamePasswordToken.getUsername();
        User user=userService.finByUsername(username);
        return new SimpleAuthenticationInfo(user,user.getPassword(),this.getClass().getName());
    }

 

并没有将 前端获取的值传入到 UsernamePasswordToken中导致空指针异常