<!-- 自定义转换器 -->
    <bean id="conversionService" class="org.springframework.format.support.DefaultFormattingConversionService"> 
        	<property name="converters">
        		<list>
        		    <bean class="org.converter.DateConverter"></bean>
        		</list>
        	</property>
    </bean>  
    <!-- 注册转化器 -->
      <mvc:annotation-driven conversion-service="conversionService" />

package org.converter;

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

import org.springframework.core.convert.converter.Converter;


public class DateConverter implements Converter<String, Date>  {

	private static final List<String> formarts = new ArrayList<String>(4);
	static{
		formarts.add("yyyy-MM");
		formarts.add("yyyy-MM-dd");
		formarts.add("yyyy-MM-dd hh:mm");
		formarts.add("yyyy-MM-dd hh:mm:ss");
	}
	public Date convert(String source) {
		String value = http://www.mamicode.com/source.trim();"".equals(value)) {
			return null;
		}
		if(source.matches("^\\d{4}-\\d{1,2}$")){ 
			return parseDate(source, formarts.get(0));
		}else if(source.matches("^\\d{4}-\\d{1,2}-\\d{1,2}$")){
			return parseDate(source, formarts.get(1));
		}else if(source.matches("^\\d{4}-\\d{1,2}-\\d{1,2} {1}\\d{1,2}:\\d{1,2}$")){
			return parseDate(source, formarts.get(2));
		}else if(source.matches("^\\d{4}-\\d{1,2}-\\d{1,2} {1}\\d{1,2}:\\d{1,2}:\\d{1,2}$")){
			return parseDate(source, formarts.get(3));
		}else {
			throw new IllegalArgumentException("Invalid boolean value ‘" + source + "‘");
		}
	}

	/**
	 * 功能描述：格式化日期
	 * 
	 * @param dateStr
	 *            String 字符型日期
	 * @param format
	 *            String 格式
	 * @return Date 日期
	 */
	public  Date parseDate(String dateStr, String format) {
		Date date=null;
		try {
			DateFormat dateFormat = new SimpleDateFormat(format);
			date = (Date) dateFormat.parse(dateStr);
		} catch (Exception e) {
		}
		return date;
	}
	public static void main(String[] args) {
		System.err.println(new DateConverter().convert("2014-04"));
	}
}

Spring mvc 自定义时间转换器