org.apache.commons.beanutils.ConversionException: No value specified solutions

Transfer: https://www.cnblogs.com/linjiqin/archive/2011/07/21/2112628.html

When used in a java.sql.Date time and other non-built-in object, if the object is null This exception occurs. The easiest way is to ensure that non-built-in object is not null.

        

With the changes in demand and changes in project business, does not guarantee the built-in object is not null, it is necessary to solve this anomaly, in order to achieve a common effect, the following solution for this purpose abnormalities

      / ** Availability * / 
      Private java.sql.Date timeToMarket;

    // null when the attribute is timeToMarket is thrown org.apache.commons.beanutils.ConversionException: No value specified exception 
    // public getTimeToMarket a Date () { 
    // return timeToMarket; 
    //} 
    //     
    // public void setTimeToMarket (a Date timeToMarket) { 
    // this.timeToMarket = timeToMarket; 
    //}

    //解决办法
    public String getTimeToMarket() {
        if (timeToMarket == null) return null;
        DateFormat dateFormat = DateFormat.getDateInstance();
        return dateFormat.format(this.timeToMarket);
    }

    public void setTimeToMarket(String timeToMarket) {
        if (timeToMarket == null || "".equals(timeToMarket.trim())) {
            this.timeToMarket = null;
        } else {
            try {
                DateFormat dateFormat = DateFormat.getDateInstance();
                this.timeToMarket = new java.sql.Date(dateFormat.parse(
                        timeToMarket).getTime());
            } catch (ParseException e) {
                e.printStackTrace (); 
            } 
        } 
    }