SpringMVC中的400错误，The request sent by the client was syntactically incorrect.

在其他对象属性类型一样情况下，只需要创建一个类，再在springmvc.xml中添加配置：

package com.ujiuye.common;

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

import java.text.SimpleDateFormat;

import java.util.Date;

public class DateTimeConverter implements Converter<String, Date> {

    public Date convert(String s) {

        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");

        try{

            Date date = sdf.parse(s);

            return date;

        }catch (Exception ex){

            System.out.println(ex.getMessage());

            return null;

        }

    }

}

<!--全局类型转型器-->

    <bean id="converter" class="com.ujiuye.common.DateTimeConverter"></bean>

    <bean id="formattingConversionService" class="org.springframework.format.support.FormattingConversionServiceFactoryBean">

        <property name="converters">

            <set>

                <ref bean="converter"></ref>

            </set>

        </property>

    </bean>

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

<mvc:annotation-driven/>