Spring注入Date類型的三種方法總結(jié)
測試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的構(gòu)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類型注入.DateBean"> property name="birthday"> bean factory-bean="dateFormat" factory-method="parse"> constructor-arg value="2015-12-31" /> /bean> /property> /bean> /beans>
方式2:純配置,先自定義CustomDateEditor,再轉(zhuǎn)換類型
?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"> !-- 自定義日期編輯器 --> 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轉(zhuǎn)換為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:先用一個類重寫PropertyEditorSupport的setAsText方法,再在配置文件中,配置轉(zhuǎn)換類型就可以了,跟上面方法類似
public class MyDatePropertyEditor extends PropertyEditorSupport { private String format; public String getFormat() { return format; } public void setFormat(String format) { this.format = format; } // text為需要轉(zhuǎn)換的值,當(dāng)為bean注入的類型與編輯器轉(zhuǎn)換的類型匹配時就會交給setAsText方法處理 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:創(chuàng)建一個類 重寫PropertyEditorSupport的setAsText方法 --> !-- 自定義日期編輯器 --> bean class="org.springframework.beans.factory.config.CustomEditorConfigurer"> property name="customEditors"> !--需要編輯的屬性類型,是一個map --> map> entry key="java.util.Date"> bean class="com.springDemo1.Date類型注入.MyDatePropertyEditor"> property name="format" value="yyyy-MM-dd" /> !--注入需要轉(zhuǎn)換的格式 --> /bean> /entry> /map> /property> /bean> /beans>
測試:
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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標(biāo)簽:貸款邀約 黃石 南京 廣州 樂山 銅川 大連 內(nèi)江
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