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ValidatorUtils.java

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+package com.utils;
+
+// 导入必要的Java工具类
+import java.util.Set;
+// 导入验证相关的类
+import javax.validation.ConstraintViolation;
+import javax.validation.Validation;
+import javax.validation.Validator;
+// 导入自定义异常类
+import com.entity.EIException;
+
+// 数据校验工具类，基于hibernate-validator实现
+public class ValidatorUtils {
+    // 静态验证器实例
+    private static Validator validator;
+
+    // 静态初始化块，初始化验证器
+    static {
+        // 获取默认的验证器工厂并创建验证器实例
+        validator = Validation.buildDefaultValidatorFactory().getValidator();
+    }
+
+    // 校验对象方法
+    // object: 需要校验的对象
+    // groups: 可选的校验组
+    // 抛出EIException当校验失败时
+    public static void validateEntity(Object object, Class<?>... groups)
+            throws EIException {
+        // 执行校验并获取校验结果集合
+        Set<ConstraintViolation<Object>> constraintViolations = validator.validate(object, groups);
+        // 检查是否有校验错误
+        if (!constraintViolations.isEmpty()) {
+            // 获取第一个校验错误
+            ConstraintViolation<Object> constraint = (ConstraintViolation<Object>)constraintViolations.iterator().next();
+            // 抛出包含错误信息的异常
+            throw new EIException(constraint.getMessage());
+        }
+    }
+}