自定义封装Exception异常抛出

话不多说直接上代码，朋友们可自己测试用于项目：

BaseException类（基础类）

/**
  *异常处理基类
  */
 public class BaseException extends RuntimeException {
 
     private static final long serialVersionUID = -3653870580234213024L;
     protected String messageKey;
 
 
     public BaseException() {
         super();
     }
 
     public BaseException(String s, Throwable throwable) {
         super(s, throwable);
     }
 
     public BaseException(Throwable throwable) {
         super(throwable);
     }
 
     public BaseException(String messageKey) {
         super();
         this.messageKey = messageKey;
     }
 
 
     /**
      * 取得异常信息key
      * @return String
      */
     public String getMessageKey() {
         return messageKey;
     }
 
 
     /**
      * 设置异常信息key
      * @param messageKey
      * @return void
      */
     public void setMessageKey(String messageKey) {
         this.messageKey = messageKey;
     }
 
     @Override
     public String getMessage() {
         return messageKey;
     }

DaoException类（Dao层）

public class DaoException extends BaseException {
 
    private static final long serialVersionUID = -9006104640618533135L;
 
    public DaoException(String messageKey) {
        super.setMessageKey(messageKey);
    }
 
    public DaoException(String messageKey, Throwable t) {
        super.setMessageKey(messageKey);
        super.initCause(t);
    }
 
    public DaoException(Throwable t) {
        super.setMessageKey(t.getClass().getSimpleName());
        super.initCause(t);
    }
 
    public Throwable getOrignalException() {
        Throwable t = this.getCause();
        while(t.getCause() != null){
            t = t.getCause();
        }
        return t;
    }
 
    public String getOrignalMessageKey() {
        return this.getOrignalException().getClass().getSimpleName();
    }
}

ServiceException类（业务层）

public class ServiceException extends BaseException {
 
    private static final long serialVersionUID = -9006104640618533135L;
 
    public ServiceException(String messageKey) {
        super(messageKey);
    }
 
    public ServiceException(Throwable t) {
        if(t instanceof BaseException){
            super.setMessageKey(((BaseException) t).getMessageKey());
        }
        super.initCause(t);
    }
 
    public ServiceException(String messageKey, Throwable t) {
        super.setMessageKey(messageKey);
        super.initCause(t);
    }
 
    public ServiceException() {
 
    }
 
    public Throwable getOrignalException() {
        Throwable t = this.getCause();
        while(t.getCause() != null){
            t = t.getCause();
        }
        return t;
    }
 
    public String getOrignalMessageKey() {
        return this.getOrignalException().getClass().getSimpleName();
    }
}