springmvc String 转 Date

1 编写converter

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

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


public class StringToDateConverter implements Converter<String,Date>{
        private String pattern;
        public StringToDateConverter(String pattern){
            this.pattern=pattern;
            System.out.println("初始化**********"+pattern);
        }

        @Override
        public Date convert(String str){
            try{
                System.out.println("*************convert 被调用了*************");
                SimpleDateFormat simpleDateFormat=new SimpleDateFormat(pattern);
                simpleDateFormat.setLenient(false);
                Date date= simpleDateFormat.parse(str);
                System.out.println("格式化之前的str"+str+"格式化之后的date"+date);
                return date;
            }catch (Exception e) {
                    return null;
            }
        }

}

2 配置

     2-1

<bean id="conversionService" class="org.springframework.context.support.ConversionServiceFactoryBean">
        <property name="converters">
            <list>
                <bean class="com.kiruma.converter.StringToDateConverter">
                    <constructor-arg type="java.lang.String" value="yyyy-MM-dd"/>
                </bean>
            </list>
        </property>

    </bean>

    2-2

<mvc:annotation-driven conversion-service="conversionService"/>