依赖检查模式

• none – 没有依赖检查，这是默认的模式。
• simple – 如果基本类型(int, long,double…)和集合类型(map, list..)的任何属性都没有设置，unsatisfieddependencyexception将被抛出。
• objects – 如果对象类型的任何属性都没有设置，unsatisfieddependencyexception将被抛出。
• all – 如果任何类型的任何属性都没有被设置，unsatisfieddependencyexception将被抛出。

注：默认模式是 none

示例

package com.h3.common;

public class customer 
{
	private person person;
	private int type;
	private string action;

	//getter and setter methods
}

package com.h3.common;

public class person 
{
	private string name;
	private string address;
	private int age;
	
	//getter and setter methods	
}

1. none 依赖检查

<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="customerbean" class="com.h3.common.customer" >
		<property name="action" value="buy" />
	</bean>

	<bean id="personbean" class="com.h3.common.person">
		<property name="name" value="h3" />
		<property name="address" value="address abc" />
		<property name="age" value="29" />
	</bean>

</beans>

2. simple 依赖检查

<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="customerbean" class="com.h3.common.customer" 
         dependency-check="simple">

		<property name="person" ref="personbean" />
		<property name="action" value="buy" />
	</bean>

	<bean id="personbean" class="com.h3.common.person">
		<property name="name" value="h3" />
		<property name="address" value="address abc" />
		<property name="age" value="29" />
	</bean>

</beans>

org.springframework.beans.factory.unsatisfieddependencyexception: 
error creating bean with name 'customerbean' 
defined in class path resource [config/spring-customer.xml]: 
unsatisfied dependency expressed through bean property 'type': 
set this property value or disable dependency checking for this bean.

3. objects 依赖检查

<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="customerbean" class="com.h3.common.customer" 
         dependency-check="objects">

		<property name="action" value="buy" />
		<property name="type" value="1" />
	</bean>

	<bean id="personbean" class="com.h3.common.person">
		<property name="name" value="h3" />
		<property name="address" value="address abc" />
		<property name="age" value="29" />
	</bean>
	
</beans>

org.springframework.beans.factory.unsatisfieddependencyexception: 
error creating bean with name 'customerbean' 
defined in class path resource [config/spring-customer.xml]: 
unsatisfied dependency expressed through bean property 'person': 
set this property value or disable dependency checking for this bean.

4. all 依赖检查

<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="customerbean" class="com.h3.common.customer" 
         dependency-check="all">

		<property name="action" value="buy" />
	</bean>

	<bean id="personbean" class="com.h3.common.person">
		<property name="name" value="h3" />
		<property name="address" value="address abc" />
		<property name="age" value="29" />
	</bean>

</beans>

全局默认的依赖检查

<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" 
	default-dependency-check="all">

	<bean id="customerbean" class="com.h3.common.customer">
		<property name="action" value="buy" />
		<property name="type" value="1" />
	</bean>

	<bean id="personbean" class="com.h3.common.person">
		<property name="name" value="h3" />
		<property name="address" value="address abc" />
		<property name="age" value="29" />
	</bean>
	
</beans>