SpringMVC-自定義轉換器

1.定義轉換器類實作Converter接口

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

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

public class DateConverter implements Converter<String, Date> {
    @Override
    public Date convert(String s) {
        //将日期字元串轉為日期對象 傳回
        Date date = null;
        SimpleDateFormat format=new SimpleDateFormat("yyyy-MM-dd");
        try {
            date = format.parse(s);

        } catch (ParseException e) {
            e.printStackTrace();
        }
        return date;
    }
}      

2.在spring-mvc.xml配置檔案中聲明轉換器

<!--    聲明轉換器-->
    <bean id="conversionService2" class="org.springframework.context.support.ConversionServiceFactoryBean">
        <property name="converters">
            <list>
                <bean class="com.hao.converter.DateConverter"></bean>
            </list>
        </property>
    </bean>      

3.在< annotation- driven >中引用轉換器

<!--注解驅動-->
<!--    conversion-service:引入轉換器-->
    <mvc:annotation-driven conversion-service="conversionService2"/>      

4.Controller層

@RequestMapping("/report19")
    @ResponseBody
    public void save19(Date date){
        System.out.println(date);
    }