spring boot的Vaadin登录问题

Question

我可以通过重新启动服务器并尝试重新登录来重现此问题。我在开发模式和生产模式中测试了这个问题，得到了相同的行为。

Answer 1

我发现您的代码存在两个问题：

1. SecurityUtils

不推荐使用ServletHelper类，我认为这是问题的原因。我将其替换为HandlerHelper:

public class SecurityUtils {

    /**
     * Tests if the request is an internal framework request. The test consists of
     * checking if the request parameter is present and if its value is consistent
     * with any of the request types know.
     *
     * @param request
     *            {@link HttpServletRequest}
     * @return true if is an internal framework request. False otherwise.
     */
    static boolean isFrameworkInternalRequest(HttpServletRequest request) {
        final String parameterValue = request.getParameter(ApplicationConstants.REQUEST_TYPE_PARAMETER);
        return parameterValue != null && Stream.of(HandlerHelper.RequestType.values())
                .anyMatch(r -> r.getIdentifier().equals(parameterValue));
    }

<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
        </plugin>
        <plugin>
            <groupId>com.vaadin</groupId>
            <artifactId>vaadin-maven-plugin</artifactId>
            <version>${vaadin.version}</version>
            <executions>
                <execution>
                    <goals>
                        <goal>prepare-frontend</goal>
                    </goals>
                </execution>
            </executions>
        </plugin>
    </plugins>
</build>