Spring注入Date类型的三种方法总结
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2022-04-15 09:20:06
spring注入date类型的三种方法总结
测试bean:
public class datebean {
private date birthda...
spring注入date类型的三种方法总结
测试bean:
public class datebean { private date birthday; public date getbirthday() { return birthday; } public void setbirthday(date birthday) { this.birthday = birthday; } }
方式1:利用simpledateformat的构造方法注入
<?xml version="1.0" encoding="utf-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:p="http://www.springframework.org/schema/p" 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.xsd"> <bean id="dateformat" class="java.text.simpledateformat"> <constructor-arg value="yyyy-mm-dd" /> </bean> <bean id="datebean" class="com.springdemo1.date类型注入.datebean"> <property name="birthday"> <bean factory-bean="dateformat" factory-method="parse"> <constructor-arg value="2015-12-31" /> </bean> </property> </bean> </beans>
方式2:纯配置,先自定义customdateeditor,再转换类型
<?xml version="1.0" encoding="utf-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:p="http://www.springframework.org/schema/p" 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.xsd"> <!-- 自定义日期编辑器 --> <bean id="dateeditor" class="org.springframework.beans.propertyeditors.customdateeditor"> <constructor-arg> <bean class="java.text.simpledateformat"> <constructor-arg value="yyyy-mm-dd"></constructor-arg> </bean> </constructor-arg> <constructor-arg value="true" /> </bean> <!-- 使 spring转换为java.util.date --> <bean class="org.springframework.beans.factory.config.customeditorconfigurer"> <property name="customeditors"> <map> <entry key="java.util.date"> <ref bean="dateeditor" /> </entry> </map> </property> </bean> </beans>
方式3:先用一个类重写propertyeditorsupport的setastext方法,再在配置文件中,配置转换类型就可以了,跟上面方法类似
public class mydatepropertyeditor extends propertyeditorsupport { private string format; public string getformat() { return format; } public void setformat(string format) { this.format = format; } // text为需要转换的值,当为bean注入的类型与编辑器转换的类型匹配时就会交给setastext方法处理 public void setastext(string text) throws illegalargumentexception { simpledateformat sdf = new simpledateformat(format); try { this.setvalue(sdf.parse(text)); } catch (parseexception e) { e.printstacktrace(); } } }
<?xml version="1.0" encoding="utf-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:p="http://www.springframework.org/schema/p" 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.xsd"> <!--方式3:创建一个类 重写propertyeditorsupport的setastext方法 --> <!-- 自定义日期编辑器 --> <bean class="org.springframework.beans.factory.config.customeditorconfigurer"> <property name="customeditors"> <!--需要编辑的属性类型,是一个map --> <map> <entry key="java.util.date"> <bean class="com.springdemo1.date类型注入.mydatepropertyeditor"> <property name="format" value="yyyy-mm-dd" /> <!--注入需要转换的格式 --> </bean> </entry> </map> </property> </bean> </beans>
测试:
public class datetest { @test public void testname() throws exception { applicationcontext context = new classpathxmlapplicationcontext( "applicationcontext.xml"); datebean bean = (datebean) context.getbean("datebean"); system.out.println(bean.getbirthday()); } }
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