Java spring自定義屬性編輯器
阿新 • • 發佈：2019-01-03
匯入測試jar包junit-4.8.2.jar
字串自定義Date轉化
1.新增分拆配置檔案applicationContext_editor.xml
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" 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-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.0.xsd"> <!-- id是唯一性標識 --> <bean id="customEditors" class="org.springframework.beans.factory.config.CustomEditorConfigurer"> <property name="customEditors"> <map> <entry key="java.util.Date" value ="com.xiaoma.demo.UtilDatePropertyEditor" /> </map> </property> </bean> </beans>
第一個配置檔案applicationContext.xml
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" 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-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.0.xsd"> <!-- id是唯一性標識 --> <bean id="bean1" class="com.xiaoma.demo.Bean1 "> <property name="name" value="xiaoliu" /> <property name="dateValue" value="2018-1-15"></property> </bean> </beans>
建立實體Bean1
package com.xiaoma.demo; import java.awt.List; import java.util.Date; import java.util.Map; import java.util.Set; public class Bean1 { private String name; private int age; private List lists; private Set set; private String [] arrys; private Map maps; private Date dateValue; public Date getDateValue() { return dateValue; } public void setDateValue(Date dateValue) { this.dateValue = dateValue; } public String getName() { return name; } public void setName(String name) { this.name = name; } public int getAge() { return age; } public void setAge(int age) { this.age = age; } public List getLists() { return lists; } public void setLists(List lists) { this.lists = lists; } public Set getSet() { return set; } public void setSet(Set set) { this.set = set; } public String[] getArrys() { return arrys; } public void setArrys(String[] arrys) { this.arrys = arrys; } public Map getMaps() { return maps; } public void setMaps(Map maps) { this.maps = maps; } }
建立自定義屬性編輯器 UtilDatePropertyEditor
package com.xiaoma.demo;
import java.beans.PropertyEditorSupport;
import java.text.SimpleDateFormat;
import java.util.Date;
/**
* AOP宣告式服務能力
* 對於資源，Hibernate Session 或JDBC Connection 我們不負責開啟和關閉
* 面向介面程式設計
* 減少程式碼中的耦合，將耦合配置到配置檔案之中
*
* @author Sugar
* 時間轉換器，將字串型別轉化為java.util.Date
*
*/
public class UtilDatePropertyEditor extends PropertyEditorSupport{
@Override
public void setAsText(String text) throws IllegalArgumentException {
System.out.println(text);
try {
Date parse = new SimpleDateFormat("yyyy-MM-dd").parse(text);
this.setValue(parse);
} catch (Exception e) {
// TODO: handle exception
}
}
}
運用測試類ShowTest
package test;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import com.xiaoma.demo.Bean1;
import junit.framework.TestCase;
public class ShowTest extends TestCase{
private BeanFactory factory;
@Override
protected void setUp() throws Exception {
//多配置檔案的載入
String [] configLocations = new String []{"applicationContext.xml","applicationContext_editor.xml"};
factory = new ClassPathXmlApplicationContext(configLocations);
}
public void testShow(){
Bean1 bean1 = (Bean1) factory.getBean("bean1");
String name = bean1.getName();
System.out.println("name:"+name);
}
@Override
protected void tearDown() throws Exception {
// TODO Auto-generated method stub
super.tearDown();
}
}
PS:使用spring4.0報錯問題
<!-- id是唯一性標識 -->
<bean id="customEditors"
class="org.springframework.beans.factory.config.CustomEditorConfigurer">
<property name="customEditors">
<map>
<entry key="java.util.Date">
<bean class="com.xiaoma.demo.UtilDatePropertyEditor"></bean>
</entry>
</map>
</property>
</bean>
報錯Failed to convert property value of type ‘java.util.LinkedHashMap’ to required type ‘java.util.Map’ for property ‘customEditors’;
是由於2.0api與4.0api的區別，在4.0之中改為如下
<!-- id是唯一性標識 -->
<bean id="customEditors" class="org.springframework.beans.factory.config.CustomEditorConfigurer">
<property name="customEditors">
<map>
<entry key="java.util.Date" value ="com.xiaoma.demo.UtilDatePropertyEditor" />
</map>
</property>
</bean>
報錯問題解決