springmvc 自定义类型转换器

package com.hy.springmvc.entities;

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

import com.google.gson.Gson;

public class DepartmentConvertor implements Converter<String, Department> {

    @Override
    public Department convert(String source) {
        System.out.println("com.hy.springmvc.entities.DepartmentConvertor: "
                + source);
        Department department = new Gson().fromJson(source, Department.class);
        return department;
    }

}

<bean id="conversionService"
        class="org.springframework.context.support.ConversionServiceFactoryBean">
        <property name="converters">
            <list>
                <bean class="com.hy.springmvc.entities.DepartmentConvertor"></bean>
            </list>
        </property>
    </bean>