SpringMVC 自定义全局PropertyEditor

<mvc:annotation-driven></mvc:annotation-driven>注入了@Controller与@RequestMapping需要的注解类

    <bean class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping"/>

    <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"/>

当需要自定义全局属性转换器（JodaTime）属性转换器，可用注解实现。但是实际的项目管理中，使用注解开发，管理不好对于后期维护可是大坑啊，所以个人觉得还是使用配置文件进行开发更利于项目的维护。

1、首先，在Spring最新版本（4.1.6.RELEASE）版本中上述的两个注解类已经不推荐使用了，取而代之的是

org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter

org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping

所以不适用<mvc:annotation-driven>而是自己来维护

2、配置文件如下

<context:component-scan base-package="com.cml.mvc.*" />

	<!-- 取代mvc:annotation-driven> -->

	<bean

		class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping">

	</bean>

	<!-- 采用SpringMVC自带的JSON转换工具，支持@ResponseBody注解 -->

	<bean

		class=" org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter">

		<property name="messageConverters">

			<list>

				<ref bean="mappingJacksonHttpMessageConverter" />

			</list>

		</property>

		<!-- 注入全局的propertiesEditor -->

		<property name="webBindingInitializer">

			<bean class="com.cml.mvc.base.BaseWebBindingInital">

				<property name="timeFormatter" value="yyyy-MM-dd HH:mm:ss"></property>

			</bean>

		</property>

		<property name="contentNegotiationManager" ref="contentNegotiationManager"></property>

	</bean>

	<!-- 避免IE执行AJAX时,返回JSON出现下载文件 -->

	<bean id="mappingJacksonHttpMessageConverter"

		class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">

		<property name="supportedMediaTypes">

			<list>

				<value>text/html;charset=UTF-8</value>

			</list>

		</property>

	</bean>

	<bean id="contentNegotiationManager"

		class="org.springframework.web.accept.ContentNegotiationManagerFactoryBean">

		<property name="favorPathExtension" value="false" />

		<property name="favorParameter" value="true" />

		<property name="mediaTypes">

			<value>

				json=application/json

				xml=application/xml

			</value>

		</property>

	</bean>

3、配置文件中webBindingInitializer我们可以注入全局的PropertyEditor，详细代码：

package com.cml.mvc.base;

import org.apache.commons.logging.Log;

import org.apache.commons.logging.LogFactory;

import org.joda.time.DateTime;

import org.springframework.web.bind.WebDataBinder;

import org.springframework.web.bind.support.WebBindingInitializer;

import org.springframework.web.context.request.WebRequest;

import com.cml.mvc.property.editor.JodaTimePropertyEditor;

public class BaseWebBindingInital implements WebBindingInitializer {

	private static final Log LOG = LogFactory

			.getLog(BaseWebBindingInital.class);

	private String timeFormatter;

	@Override

	public void initBinder(WebDataBinder binder, WebRequest request) {

		binder.registerCustomEditor(DateTime.class, new JodaTimePropertyEditor(

				timeFormatter));

		LOG.debug("BaseWebBindingInital->initBinder=====>sessionId:"

				+ Thread.currentThread().getId());

	}

	public String getTimeFormatter() {

		return timeFormatter;

	}

	public void setTimeFormatter(String timeFormatter) {

		this.timeFormatter = timeFormatter;

	}

}

4、JodaTimePropertyEditor是自定义的JodaTime的PropertyEditor

package com.cml.mvc.property.editor;

import java.beans.PropertyEditorSupport;

import org.apache.commons.logging.Log;

import org.apache.commons.logging.LogFactory;

import org.joda.time.DateTime;

import org.joda.time.format.DateTimeFormat;

import org.joda.time.format.DateTimeFormatter;

import org.springframework.util.StringUtils;

/**

 * jodaTime日期格式转换

 * 

 *         2015年4月22日

 */

public class JodaTimePropertyEditor extends PropertyEditorSupport {

	private static final Log LOG = LogFactory

			.getLog(JodaTimePropertyEditor.class);

	private String formatter = "yyyyMMdd HHmmss";

	private DateTimeFormatter format;

	public JodaTimePropertyEditor(String formatter) {

		if (null != formatter) {

			this.formatter = formatter;

		}

		format = DateTimeFormat.forPattern(formatter);

	}

	@Override

	public String getAsText() {

		LOG.debug("===>getAsText:" + getValue());

		Object obj = getValue();

		if (null != obj) {

			return ((DateTime) obj).toString(formatter);

		}

		return "";

	}

	@Override

	public void setAsText(String text) throws IllegalArgumentException {

		LOG.debug("datetime setAsText:" + text);

		if (StringUtils.isEmpty(text)) {

			setValue(null);

		} else {

			try {

				setValue(format.parseDateTime(text));

			} catch (Exception e) {

				LOG.debug("format datetime error:" + e.getMessage() + ",value:"

						+ text);

			}

		}

	}

	public String getFormatter() {

		return formatter;

	}

	public void setFormatter(String formatter) {

		this.formatter = formatter;

	}

}