主要角色转换为JwtAuthenticationToken（CAS异常）

要将主要角色转换为JwtAuthenticationToken，首先需要确保已经正确配置了CAS客户端，并且能够成功获取到CAS服务端返回的JWT令牌。然后，可以使用以下方法将主要角色转换为JwtAuthenticationToken：

1. 创建一个JwtAuthenticationToken类，继承自Spring Security的Authentication接口：

public class JwtAuthenticationToken implements Authentication {
    private final UserDetails userDetails;
    private final String token;

    public JwtAuthenticationToken(UserDetails userDetails, String token) {
        this.userDetails = userDetails;
        this.token = token;
    }

    @Override
    public Collection<? extends GrantedAuthority> getAuthorities() {
        return userDetails.getAuthorities();
    }

    @Override
    public Object getCredentials() {
        return null;
    }

    @Override
    public Object getDetails() {
        return null;
    }

    @Override
    public Object getPrincipal() {
        return userDetails;
    }

    @Override
    public boolean isAuthenticated() {
        return true;
    }

    @Override
    public void setAuthenticated(boolean isAuthenticated) throws IllegalArgumentException {
        throw new UnsupportedOperationException("Cannot set authenticated");
    }

    @Override
    public String getName() {
        return userDetails.getUsername();
    }

    public String getToken() {
        return token;
    }
}

2. 在CAS的认证成功后的回调方法中，获取JWT令牌，并将主要角色转换为JwtAuthenticationToken：

public class JwtAuthenticationSuccessHandler implements AuthenticationSuccessHandler {
    private final JwtTokenService jwtTokenService;

    public JwtAuthenticationSuccessHandler(JwtTokenService jwtTokenService) {
        this.jwtTokenService = jwtTokenService;
    }

    @Override
    public void onAuthenticationSuccess(HttpServletRequest request, HttpServletResponse response, Authentication authentication) throws IOException, ServletException {
        if (authentication.getPrincipal() instanceof UserDetails) {
            UserDetails userDetails = (UserDetails) authentication.getPrincipal();
            String token = jwtTokenService.generateToken(userDetails); // 通过用户信息生成JWT令牌
            JwtAuthenticationToken jwtAuthenticationToken = new JwtAuthenticationToken(userDetails, token);
            SecurityContextHolder.getContext().setAuthentication(jwtAuthenticationToken); // 将JwtAuthenticationToken设置为当前认证对象
        }

        // 继续处理其他逻辑
        // ...
    }
}

请注意，这只是一个简单的示例，实际实现中可能需要根据具体情况进行调整。另外，你可能还需要为JwtAuthenticationToken实现一个JwtTokenService，用于生成和验证JWT令牌。