 
2019-04-15 18:27
谢谢波总!!!搞定了!
public BigDecimal toBigDecimal(String value, BigDecimal defaultValue) {
        try {
            if (StrKit.isBlank(value)) {
                return defaultValue;
            } else {
                return new BigDecimal(value);
            }
        } catch (Exception var3) {
            throw new ActionException(400, renderManager.getRenderFactory().getErrorRender(400), "Can not parse the parameter \"" + value + "\" to BigDeciaml value.");
        }
    }
public BigDecimal getBigDecimal(String name){
        return this.toBigDecimal(getPara(name),(BigDecimal) null);
    }
public BigDecimal getBigDecimal(String name, BigDecimal defaultValue){
        return this.toBigDecimal(getPara(name),defaultValue);