@BeforeEach
    public void setup() {
        DispatcherHandler dispatcherHandler = mock(DispatcherHandler.class);
        when(dispatcherHandler.handle(any())).thenReturn(Mono.empty());
        String sha512Key = DigestUtils.sha512Hex("123456");
        localDispatcherFilter = new LocalDispatcherFilter(dispatcherHandler, sha512Key);
        webFilterChain = mock(WebFilterChain.class);
        when(webFilterChain.filter(any())).thenReturn(Mono.empty());
    }
test case for LocalDispatcherFilter.
@see LocalDispatcherFilter
shenyu-web/src/test/java/org/apache/shenyu/web/filter/LocalDispatcherFilterTest.java