DateParamConvertor.java

package org.nutz.mvc.adaptor.convertor;

import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;

import org.nutz.castor.Castors;
import org.nutz.lang.Strings;
import org.nutz.lang.Times;
import org.nutz.mvc.adaptor.ParamConvertor;

public class DateParamConvertor implements ParamConvertor {

    private Class<?> type;
    private DateFormat dfmt;

    public DateParamConvertor(Class<?> type, String datefmt) {
        this.type = type;
        if (Strings.isBlank(datefmt)) {
            dfmt = null;
        } else {
            dfmt = new SimpleDateFormat(datefmt);
        }
    }

    public Object convert(String[] ss) {
        if (null == ss || ss.length == 0)
            return null;

        if (Strings.isBlank(ss[0]))
            return null;

        // 如果不为 null，必然要转换成日期
        if (null != dfmt) {
            Date o = Times.parseq(dfmt, ss[0]);
            return Castors.me().castTo(o, type);
        }
        // 默认采用转换器转换
        return Castors.me().cast(ss[0], String.class, type);
    }
}