包装异常>>>测试

一个包装异常的小例子.

    public Activity updateActivity(Map Mapactivity) {
        Long id = Long.valueOf(Mapactivity.get("id").toString());
        Activity act = (Activity)this.getHibernateTemplate().get(Activity.class,id);
        try {
            BeanUtils.populate(act,Mapactivity);
            this.getHibernateTemplate().update(act);
        }catch(Exception e){
               throw new DolphinOperationException(e,CodeCategories.UPDATE_FAILURE);  //CodeCategories.UPDATE_FAILURE   常量200或者400
        }
        return act;
    }

1.因为BeanUtils本身就会需要抛出异常,但所有的异常都是Exception
2.这个例子,需求是更新一个拼单,这里使用到了助手类(临时发现,如果是Date类型为空则会出现异常,使用需注意),在更新完拼单后将这个拼单返回,并告知更新成功或者失败.

下面是这个异常包装类

public class DolphinOperationException extends RuntimeException {
    private Integer errorCode;   //定义一个错误编码

    public DolphinOperationException(Integer errorCode) {
        this.errorCode = errorCode;
    }

    public DolphinOperationException(Throwable cause, Integer errorCode) {
        super(cause);
        this.errorCode = errorCode;
    }

    public DolphinOperationException(Integer errorCode,String message) {
        super(message); 
    }

    public DolphinOperationException(String message, Throwable cause, Integer errorCode) {
        super(message, cause);
        this.errorCode = errorCode;
    }

    public Integer getErrorCode() {
        return errorCode;
    }
}

继承RuntimeException,重写了构造方法

测试类

    @Test
    @Rollback(false)
    public void updateActivity(){
        Address ads = new Address();
        ads.setAddress("22222");

        User user = new User();
        user.setId(15l);

        Activity act = new Activity();
        act.setId(2l);
        act.setAddress(ads);
        act.setStartTime(new Date());
        act.setTitle("光棍节写测试1");
        Activity activity=am.updateActivity(act);
        assertNotNull(activity);      
    }