增加MethodValidated注解的测试用例 及对MethodValidated使用场景和用法的说明注释

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

@@ -34,6 +34,9 @@ public class ValidationParameter implements Serializable {
 
     private static final long serialVersionUID = 7158911668568000392L;
 
+    @NotNull(groups = ValidationService.Update.class)
+    private Integer id;
+
     @NotNull // 不允许为空
     @Size(min = 2, max = 20) // 长度或大小范围
     private String name;
@@ -52,6 +55,14 @@ public class ValidationParameter implements Serializable {
     @Future // 必须为一个未来的时间
     private Date expiryDate;
 
+    public Integer getId() {
+        return id;
+    }
+
+    public void setId(Integer id) {
+        this.id = id;
+    }
+
     public String getName() {
         return name;
     }

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

@@ -15,6 +15,8 @@
  */
 package com.alibaba.dubbo.config.validation;
 
+import com.alibaba.dubbo.validation.MethodValidated;
+
 import javax.validation.constraints.Min;
 import javax.validation.constraints.NotNull;
 import javax.validation.constraints.Pattern;
@@ -28,16 +30,31 @@
  */
 public interface ValidationService { // 缺省可按服务接口区分验证场景，如：@NotNull(groups = ValidationService.class)
 
+    /**
+     *  没有加上“@MethodValidated(ValidationService.Save.class)”这句代码时，
+     *  现在的检查逻辑不会去检验groups = ValidationService.Save.class这个分组
+     *
+     * @param parameter
+     */
+    @MethodValidated(Save.class)
     void save(ValidationParameter parameter);
 
     void update(ValidationParameter parameter);
 
     void delete(@Min(1) long id, @NotNull @Size(min = 2, max = 16) @Pattern(regexp = "^[a-zA-Z]+$") String operator);
 
+    /**
+     * 假设关联查询的时候需要同时传id和email的值。这时需要检查Sava分组和Update分组。
+     * @param parameter
+     */
+    @MethodValidated({Save.class, Update.class})
+    void relatedQuery(ValidationParameter parameter);
+
     @interface Save {
     } // 与方法同名接口，首字母大写，用于区分验证场景，如：@NotNull(groups = ValidationService.Save.class)，可选
 
     @interface Update {
     } // 与方法同名接口，首字母大写，用于区分验证场景，如：@NotNull(groups = ValidationService.Update.class)，可选
 
+
 }

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

@@ -31,4 +31,8 @@ public void update(ValidationParameter parameter) {
     public void delete(long id, String operator) {
     }
 
+    public void relatedQuery(ValidationParameter parameter){
+
+    }
+
 }

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

@@ -81,6 +81,36 @@ public void testValidation() {
                     Assert.assertNotNull(violations);
                 }
 
+                //检查Save分组 save error
+                try {
+                    parameter = new ValidationParameter();
+                    parameter.setName("liangfei");
+                    parameter.setAge(50);
+                    parameter.setLoginDate(new Date(System.currentTimeMillis() - 1000000));
+                    parameter.setExpiryDate(new Date(System.currentTimeMillis() + 1000000));
+                    validationService.save(parameter);
+                    Assert.fail();
+                } catch (RpcException e) {
+                    ConstraintViolationException ve = (ConstraintViolationException) e.getCause();
+                    Set<ConstraintViolation<?>> violations = ve.getConstraintViolations();
+                    Assert.assertNotNull(violations);
+                }
+
+                // relatedQuery error 不传id和email的值，触发Save和Update的检查异常
+                try {
+                    parameter = new ValidationParameter();
+                    parameter.setName("liangfei");
+                    parameter.setAge(50);
+                    parameter.setLoginDate(new Date(System.currentTimeMillis() - 1000000));
+                    parameter.setExpiryDate(new Date(System.currentTimeMillis() + 1000000));
+                    validationService.relatedQuery(parameter);
+                    Assert.fail();
+                } catch (RpcException e) {
+                    ConstraintViolationException ve = (ConstraintViolationException) e.getCause();
+                    Set<ConstraintViolation<?>> violations = ve.getConstraintViolations();
+                    Assert.assertEquals(violations.size(),2);
+                }
+
                 // Save Error
                 try {
                     parameter = new ValidationParameter();

dubbo-filter/dubbo-filter-validation/src/main/java/com/alibaba/dubbo/validation/MethodValidated.java

@@ -0,0 +1,24 @@
+package com.alibaba.dubbo.validation;
+
+import java.lang.annotation.Documented;
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * 方法分组验证注解
+ * 使用场景：当调用某个方法时，需要检查多个分组，可以在接口方法上加上该注解
+ * 用法 在接口方法上增加注解，如：
+ *  @MethodValidated({ValidationService.Save.class, ValidationService.Update.class})
+ *  void relatedQuery(ValidationParameter parameter);
+ * 表示relatedQuery这个方法需要同时检查Save和Update这两个分组
+ * @author: zhangyinyue
+ * @Createdate: 2017年10月10日 16:34
+ */
+@Target({ElementType.METHOD})
+@Retention(RetentionPolicy.RUNTIME)
+@Documented
+public @interface MethodValidated {
+    Class<?>[] value() default {};
+}

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

@@ -20,6 +20,7 @@
 import com.alibaba.dubbo.common.logger.Logger;
 import com.alibaba.dubbo.common.logger.LoggerFactory;
 import com.alibaba.dubbo.common.utils.ReflectUtils;
+import com.alibaba.dubbo.validation.MethodValidated;
 import com.alibaba.dubbo.validation.Validator;
 
 import javassist.ClassPool;
@@ -55,9 +56,12 @@
 import java.lang.reflect.Array;
 import java.lang.reflect.Field;
 import java.lang.reflect.Method;
+import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.Collection;
 import java.util.Date;
 import java.util.HashSet;
+import java.util.List;
 import java.util.Map;
 import java.util.Set;
 
@@ -231,51 +235,60 @@ else if (memberValue instanceof ArrayMemberValue) {
     }
 
     public void validate(String methodName, Class<?>[] parameterTypes, Object[] arguments) throws Exception {
+        List<Class<?>> groups = new ArrayList<>();
         String methodClassName = clazz.getName() + "$" + toUpperMethoName(methodName);
         Class<?> methodClass = null;
         try {
             methodClass = Class.forName(methodClassName, false, Thread.currentThread().getContextClassLoader());
+            groups.add(methodClass);
         } catch (ClassNotFoundException e) {
         }
         Set<ConstraintViolation<?>> violations = new HashSet<ConstraintViolation<?>>();
         Method method = clazz.getMethod(methodName, parameterTypes);
+        Class<?>[] methodClasses = null;
+        if (method.isAnnotationPresent(MethodValidated.class)){
+            methodClasses = method.getAnnotation(MethodValidated.class).value();
+            groups.addAll(Arrays.asList(methodClasses));
+        }
+        //加入默认分组
+        groups.add(0, Default.class);
+        groups.add(1, clazz);
+
+        //将list转换为数组
+        Class<?>[] classgroups = groups.toArray(new Class[0]);
+
         Object parameterBean = getMethodParameterBean(clazz, method, arguments);
         if (parameterBean != null) {
-            if (methodClass != null) {
-                violations.addAll(validator.validate(parameterBean, Default.class, clazz, methodClass));
-            } else {
-                violations.addAll(validator.validate(parameterBean, Default.class, clazz));
-            }
+            violations.addAll(validator.validate(parameterBean, classgroups ));
         }
+
         for (Object arg : arguments) {
-            validate(violations, arg, clazz, methodClass);
+            validate(violations, arg, classgroups);
         }
+
         if (violations.size() > 0) {
+            logger.error("Failed to validate service: " + clazz.getName() + ", method: " + methodName + ", cause: " + violations);
             throw new ConstraintViolationException("Failed to validate service: " + clazz.getName() + ", method: " + methodName + ", cause: " + violations, violations);
         }
     }
 
-    private void validate(Set<ConstraintViolation<?>> violations, Object arg, Class<?> clazz, Class<?> methodClass) {
+    private void validate(Set<ConstraintViolation<?>> violations, Object arg, Class<?>... groups) {
         if (arg != null && !isPrimitives(arg.getClass())) {
             if (Object[].class.isInstance(arg)) {
                 for (Object item : (Object[]) arg) {
-                    validate(violations, item, clazz, methodClass);
+                    validate(violations, item, groups);
                 }
             } else if (Collection.class.isInstance(arg)) {
                 for (Object item : (Collection<?>) arg) {
-                    validate(violations, item, clazz, methodClass);
+                    validate(violations, item, groups);
                 }
             } else if (Map.class.isInstance(arg)) {
                 for (Map.Entry<?, ?> entry : ((Map<?, ?>) arg).entrySet()) {
-                    validate(violations, entry.getKey(), clazz, methodClass);
-                    validate(violations, entry.getValue(), clazz, methodClass);
+                    validate(violations, entry.getKey(), groups);
+                    validate(violations, entry.getValue(), groups);
                 }
             } else {
-                if (methodClass != null) {
-                    violations.addAll(validator.validate(arg, Default.class, clazz, methodClass));
-                } else {
-                    violations.addAll(validator.validate(arg, Default.class, clazz));
-                }
+                violations.addAll(validator.validate(arg, groups));
             }
         }
     }