Spring Tutorial - Spring Date Properties

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The following sections shows how to fill data to java.util.Date type value.

Java Bean

Here is the Java bean class we are going to use.

package com.java2s.common;
import java.util.Date;
//from   w w  w . j  a  v a2 s  . c  om
public class Customer {

  Date date;

  public Date getDate() {
    return date;
  }

  public void setDate(Date date) {
    this.date = date;
  }

  @Override
  public String toString() {
    return "Customer [date=" + date + "]";
  }

}

Factory bean

The following code shows how to parse a String value to a Date value and then set to Java bean.

It create a Java bean from java.text.SimpleDateFormat and parse in the format as yyyy-MM-dd. Then it use the dateFormat bean as factory-bean and use the parse method as the factory-method.

In the constructor-arg tag it sets the value to the date properties.

<beans xmlns="http://www.springframework.org/schema/beans"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://www.springframework.org/schema/beans
  http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">
  <bean id="dateFormat" class="java.text.SimpleDateFormat">
    <constructor-arg value="yyyy-MM-dd" />
  </bean>
  <bean id="customer" class="com.java2s.common.Customer">
    <property name="date">
      <bean factory-bean="dateFormat" factory-method="parse">
        <constructor-arg value="2010-01-31" />
      </bean>
    </property>
  </bean>
</beans>

CustomDateEditor

In the second method to fill date value, we use the CustomDateEditor class.

In the bean xml configuration file it declares a CustomDateEditor class to convert String into java.util.Date.

<bean id="dateEditor"
     class="org.springframework.beans.propertyeditors.CustomDateEditor">
    <constructor-arg>
      <bean class="java.text.SimpleDateFormat">
        <constructor-arg value="yyyy-MM-dd" />
      </bean>
    </constructor-arg>
    <constructor-arg value="true" />
</bean>

Then it declares CustomEditorConfigurer to make Spring convert bean properties whose type is java.util.Date.

<bean class="org.springframework.beans.factory.config.CustomEditorConfigurer">
    <property name="customEditors">
      <map>
        <entry key="java.util.Date">
          <ref local="dateEditor" />
        </entry>
      </map>
    </property>
  </bean>

Here is the full full example of bean configuration file.

<beans xmlns="http://www.springframework.org/schema/beans"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://www.springframework.org/schema/beans
  http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">
  <bean id="dateEditor"
    class="org.springframework.beans.propertyeditors.CustomDateEditor">
    <constructor-arg>
      <bean class="java.text.SimpleDateFormat">
        <constructor-arg value="yyyy-MM-dd" />
      </bean>
    </constructor-arg>
    <constructor-arg value="true" />
  </bean>
  <bean class="org.springframework.beans.factory.config.CustomEditorConfigurer">
    <property name="customEditors">
      <map>
        <entry key="java.util.Date">
          <ref local="dateEditor" />
        </entry>
      </map>
    </property>
  </bean>
  <bean id="customer" class="com.java2s.common.Customer">
    <property name="date" value="2010-02-31" />
  </bean>
</beans>

To run the application.

package com.java2s.common;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class App {
  public static void main(String[] args) {
    ApplicationContext context = new ClassPathXmlApplicationContext(
        "SpringBeans.xml");
    Customer cust = (Customer) context.getBean("customer");
    System.out.println(cust);
  }
}

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