spring boot+自定义 AOP 实现全局校验的实例代码

 @NotEmpty(message="手机号不能为空")   @Size(min=11,max=11,message="手机号码长度不正确")   @Pattern(regexp=StringUtils.REGEXP_MOBILE,message="手机号格式不正确")  private String mobile;

@Documented@Target({ElementType.FIELD,ElementType.METHOD})@Retention(RetentionPolicy.RUNTIME)public @interface ValidateParam {  int min() default 0;  int max() default Integer.MAX_VALUE;  String message() default "params is not null";  String regexp();  Class<?>[] groups() default { };   Class<? extends Payload>[] payload() default { };   boolean isNotNull() default true;}

package com.onecard.primecard.common.aop;import java.lang.reflect.Field;import java.lang.reflect.Method;import java.lang.reflect.ParameterizedType;import java.util.ArrayList;import java.util.Arrays;import java.util.regex.Pattern;import org.aspectj.lang.JoinPoint;import org.aspectj.lang.ProceedingJoinPoint;import org.aspectj.lang.annotation.Around;import org.aspectj.lang.annotation.Aspect;import org.aspectj.lang.annotation.Before;import org.aspectj.lang.annotation.Pointcut;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.springframework.context.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;import org.springframework.stereotype.Component;import com.jfcf.core.dto.ResultData;import com.onecard.core.support.util.StringUtils;import com.onecard.primecard.common.annotation.ValidateParam;import com.onecard.primecard.common.utils.ResultDataUtil;/** * 全局 切面类(校验参数) *  * @author Administrator * */@Aspect@Componentpublic class GobalHandlerAspect {  private static Logger logger = LoggerFactory.getLogger(GobalHandlerAspect.class);  @Pointcut("execution(* 包名.controller..*.*(..)) && execution(* 包名.controller..*.*(..))")  public void checkAspect(){};  @Before("checkAspect()")  public void befor(JoinPoint joinPoint) throws Exception{    //前置统一输出参数    Object[] args = joinPoint.getArgs();    if(args != null && args.length>0){      Object obj = args[0];      ParameterizedType pt = (ParameterizedType)obj.getClass().getGenericSuperclass();      Class<?> classzz = (Class<?>) pt.getActualTypeArguments()[0];      logger.info("【小X卡】-【请求实体入参】："+classzz.newInstance().toString());    }  }  @Around("checkAspect()")  public Object around(ProceedingJoinPoint joinPoint) throws Throwable{    //校验参数    Object[] args = joinPoint.getArgs();    Object obj = null;    if(args != null && args.length > 0){      obj = args[0];      Class classzz = obj.getClass();      //没有顺序和秩序的数组      Field[] fieldArray = classzz.getDeclaredFields();      ArrayList<Field> fieldList = new ArrayList<Field>(Arrays.asList(fieldArray));      String res = checkParam(fieldList,obj);      if(StringUtils.isNotNull(res)){        return ResultDataUtil.result(ResultData.STATUS_PARAM_ERROR, res);      }    }    return joinPoint.proceed();  }  private String checkParam(ArrayList<Field> fieldList, Object obj) throws Exception {    for(Field field : fieldList){      ValidateParam validateParam = field.getAnnotation(ValidateParam.class);      logger.info("【小X卡】获取注解值："+validateParam.isNotNull()+"min="+validateParam.min()+"max="+validateParam.max());      Method method = obj.getClass().getMethod("get"+getMethodName(field.getName()));      logger.info("【小X卡】入参实体方法名称："+method.getName());      if(method != null){        Object val = method.invoke(obj);        logger.info("【小x卡】回调方法："+val);        if(validateParam != null && validateParam.isNotNull() == true){          if(null == val || "".equals(val) ){            return field.getName()+"必填参数为空";          }        }        if(validateParam.min()==11 && validateParam.max() == 11){          if(val.toString().length() != 11){            return field.getName()+"请输入参数正确的长度";          }        }        if(validateParam.regexp().equals(StringUtils.REGEXP_MOBILE)){          if(!Pattern.matches(StringUtils.REGEXP_MOBILE, val.toString())){            return field.getName()+"参数格式错误";          }        }      }    }    return null;  }   /**   * 方法首字母大写   * @param fieldName   * @return   */  private String getMethodName(String fieldName) {    StringBuffer buffer = new StringBuffer();    String firstLetter = fieldName.substring(0, 1).toUpperCase();    return buffer.append(firstLetter).append(fieldName.substring(1, fieldName.length())).toString();  }     }