fix(BeanValidation): close #787

Author: Authorlove

dubbo-config/dubbo-config-api/src/test/java/com/alibaba/dubbo/config/validation/ValidationTest.java

@@ -89,6 +89,7 @@ public void testValidation() {
                 } catch (RpcException e) {
                     ConstraintViolationException ve = (ConstraintViolationException) e.getCause();
                     Set<ConstraintViolation<?>> violations = ve.getConstraintViolations();
+                    Assert.assertTrue(violations.size() == 3);
                     Assert.assertNotNull(violations);
                 }
 

dubbo-filter/dubbo-filter-validation/src/main/java/com/alibaba/dubbo/validation/support/jvalidation/JValidator.java

@@ -231,7 +231,7 @@ else if (memberValue instanceof ArrayMemberValue) {
     }
 
     public void validate(String methodName, Class<?>[] parameterTypes, Object[] arguments) throws Exception {
-        String methodClassName = clazz.getName() + "_" + toUpperMethoName(methodName);
+        String methodClassName = clazz.getName() + "$" + toUpperMethoName(methodName);
         Class<?> methodClass = null;
         try {
             methodClass = Class.forName(methodClassName, false, Thread.currentThread().getContextClassLoader());