SpringMVC 自定义全局PropertyEditor

来源：互联网发布：淘宝开放平台编辑：程序博客网时间：2024/06/15 21:27

转载：http://blog.csdn.net/cml_blog/article/details/45222431

<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.RequestMappingHandlerAdapt

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;      }    }

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