定义类型转换类

实现Converter的接口

public class StringToDateConverter implements Converter<String, Date> {

    /**
     * @param s 传入的字符串
     * @return 字符串转换的日期
     */
    @Override
    public Date convert(String s) {

        //判断是否为空
        if (s == null) {
            throw new RuntimeException("字符串为空");
        }

        SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");
        try {
            return df.parse(s);
        } catch (ParseException e) {
            throw new RuntimeException("数据类型转换错误");
        }
    }
}

配置springmvc.xml，加载类型转换类

  <!--配置自定义数据转换器 -->
    <bean id="conversionServices" class="org.springframework.context.support.ConversionServiceFactoryBean">
        <property name="converters" >
            <set>
                <bean class="com.iforeverhz.utils.StringToDateConverter"/>
            </set>
        </property>
    </bean>