讓我的春天的應用程序出現問題。春天的單身人士被稱爲兩次
我有非常簡單的彈簧豆,它們被注入到各種其他彈簧豆。當我發現調試時,他們被調用兩次,構造函數& @PostConstruct都被調用了兩次。
我的應用程序沒有前端技術。它只是爲後端任務相關。
Spring配置文件
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:lang="http://www.springframework.org/schema/lang" xmlns:p="http://www.springframework.org/schema/p"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/lang http://www.springframework.org/schema/lang/spring-lang.xsd">
<context:component-scan base-package="com.green.integration" />
<!-- ######################################################## -->
<!-- EXPOSING SPRING BEAN VIA HTTPINVOKER SPRING REMOTING -->
<!-- ######################################################## -->
<bean name="/switch"
class="org.springframework.remoting.httpinvoker.HttpInvokerServiceExporter">
<property name="service" ref="SwitchController" />
<property name="serviceInterface"
value="com.green.ISwitchController" />
</bean>
<!-- Load in application properties reference -->
<bean id="applicationProperties"
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="location" value="classpath:application.properties" />
</bean>
<bean id="mongo" class="com.mongodb.Mongo">
<constructor-arg value="${mongo.server}" />
<constructor-arg value="${mongo.port}" />
</bean>
<bean id="morphia" class="com.google.code.morphia.Morphia">
</bean>
</beans>
的Spring bean類
@Repository
public class TransactionDAO extends BasicDAO<Transaction, ObjectId> {
private Datastore datastore;
@Autowired
public TransactionDAO(Mongo mongo, Morphia morphia) {
super(mongo, morphia, "itransact");
morphia.map(Transaction.class);
// TO USE MONGO WITHOUT SECURITY
this.datastore = morphia.createDatastore(mongo, "itransact");
logger.debug("***** CONNECTED TO MONGODB SUCCESSFULLY *****");
this.datastore.ensureIndexes();
// this.datastore.ensureCaps();
}
}
構造 「TransactionDAO」 被稱爲兩次。
我試着看調用堆棧跟蹤由
Throwable t = new Throwable();
System.out.println(t.getStackTrace()[1].toString());
每一次都表現出以下
sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
你絕對相信'@ PostConstruct'也被調用兩次嗎?被稱爲兩次的構造函數可以很容易地解釋,但不能'@ PostConstruct'。 –
您有調度程序servlet配置嗎? –
也許你有你的應用程序上下文xml從另一個上下文的xml配置文件通過導入? –