spring 定制属性编辑器

 

1.自定义转换器。

 1-1：日期转换类  

         1：继承PropertyEditorSupport
        * 实现 setAsText
        * super.setValue(date);

    
public class DateConverter extends PropertyEditorSupport {
 private String pattern ;
 public String getPattern() {
  return pattern;
 }
 public void setPattern(String pattern) {
  this.pattern = pattern;
 }
 public void setAsText(String str) throws IllegalArgumentException {
  SimpleDateFormat sdf = new SimpleDateFormat(pattern);
  try {
   Date date = sdf.parse(str);
   super.setValue(date);
  } catch (ParseException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
 }
}

1-2： 注册

 

<bean class="org.springframework.beans.factory.config.CustomEditorConfigurer">
  <property name="customEditors">
   <map>
    <entry key="java.util.Date">
     <bean class="com.sunbin.spring.util.DateConverter">
                      <property name="pattern" value="yyyy-MM-dd"></property>
     </bean>
    </entry>
   </map>
  </property>
 </bean>

 

1-3：配置使用

<bean id="log" class="com.sunbin.spring.mode.Log">
<property name="message" value="reg"></property>

 <property name="date">
 <value>2001-09-21</value>
 </property>
</bean>

 

对应类文件//省略了get/set方法

class Log {
 private int id;
 private String message;
 private Date date;}

2.使用spring内置转换器。//以下有两个转换器CustomDateEditor和StringTrimmerEditor。

 

 <bean class="org.springframework.beans.factory.config.CustomEditorConfigurer">
 <property name="customEditors">
   <map>
   <entry key="java.util.Date" value-ref="dateConverter"></entry>
   <entry key="java.lang.String" value-ref="trimmer"></entry>
   </map>
</property>   
 
 
 </bean>
 
 
 <bean id="dateConverter" class="org.springframework.beans.propertyeditors.CustomDateEditor">
   <constructor-arg ref="simpleDateFormat"></constructor-arg>
   <constructor-arg value="true"></constructor-arg>
  </bean>
 
 <bean id="simpleDateFormat" class="java.text.SimpleDateFormat">
   <constructor-arg value="yyyy-MM-dd"></constructor-arg>
 </bean>
 

<bean id="trimmer" class="org.springframework.beans.propertyeditors.StringTrimmerEditor">
 <constructor-arg value=","></constructor-arg>
 <constructor-arg value="true"></constructor-arg>

</bean>