SpringMVC 自定义全局PropertyEditor

今天药忘吃喽~ 2022-08-05 12:24 277阅读 0赞

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

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.*" />
    
    	
    	<bean
    		class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping">
    	</bean>
    
    	
    	<bean
    		class=" org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter">
    		<property name="messageConverters">
    			<list>
    				<ref bean="mappingJacksonHttpMessageConverter" />
    			</list>
    		</property>
    		
    		<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>
    	
    	<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;
    	}
    
    }