blocks|key|175848|text|通常，xml注册的bean具有优先权。因此，您可以用xml配置的bean覆盖带注释的bean，但是您正试图以相反的方式来实现它。您可以不使用不同的bean名称并使用@限定符注释在多个候选名称中选择它吗？|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|175849|大多数情况下，将xml与自动扫描相结合是很容易出错的。|175850|entityMap^0|2A|4|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@$9|K|A|L|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|M|8|@]|D|@]|E|$]]|$1|H|3|-4|5|6|7|N|8|@]|D|@]|E|$]]]|I|$]]

Usually xml-registered beans have precedence. So you can override annotated beans with xml-configured ones but you are trying to do it the other way around. Can you not use a different bean name and select it among multiple candidates by using the @Qualifier annotation? 

Most of the time combining xml with autoscanning is error-prone.

blocks|key|785529|text|我正在使用一个通过xml配置的旧应用程序(Spring3.1.1)，但我需要在测试中调整一些配置，而不偏离生产配置。我的方法是使用BeanPostProcessor。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|785530|package+myapp.test;

import+javax.servlet.ServletContext;
import+org.slf4j.Logger;
import+org.slf4j.LoggerFactory;
import+org.springframework.beans.BeansException;
import+org.springframework.beans.factory.config.BeanPostProcessor;
import+org.springframework.context.annotation.Bean;
import+org.springframework.context.annotation.Configuration;
import+org.springframework.context.annotation.Import;
import+org.springframework.context.annotation.ImportResource;
import+org.springframework.mock.web.MockServletContext;
import+org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer;

import+myapp.spring.config.ComplexSpringConfiguration;

/**
+*+Closely+resembles+production+configuration+for+testing
+*+@author+jim
+*/
@Configuration
@ImportResource("file:src/main/webapp/WEB-INF/spring-servlet.xml")
@Import(ComplexSpringConfiguration.class)
public+class+TestConfig+{
++++final+Logger+logger+=+LoggerFactory.getLogger(getClass());

++++static+{
++++++++System.setProperty("env.test",+"system");
++++}

++++//Override+templateLoaderPath+with+something+amenable+to+testing
++++@Bean
++++public+BeanPostProcessor+beanPostProcessor(){
++++++++return+new+BeanPostProcessor(){
++++++++++++@Override
++++++++++++public+Object+postProcessBeforeInitialization(Object+bean,+String+beanName)+throws+BeansException++{
++++++++++++++++//Override+templateLoaderPath+with+something+amenable+to+testing
++++++++++++++++if(beanName.equals("freemarkerConfig"))+{
++++++++++++++++++++logger.debug("overriding+bean+with+name:"+%2B+beanName);
++++++++++++++++++++FreeMarkerConfigurer+fc+=+new+FreeMarkerConfigurer();
++++++++++++++++++++fc.setTemplateLoaderPath("file:src/main/webapp/WEB-INF/freemarker");
++++++++++++++++++++bean+=+fc;
++++++++++++++++}
++++++++++++++++return+bean;
++++++++++++}

++++++++++++@Override
++++++++++++public+Object+postProcessAfterInitialization(Object+bean,+String+beanName)+throws+BeansException+{
++++++++++++++++return+bean;
+++++++++++}++
+++++++};
++++}

++++@Bean
++++public+ServletContext+servletContext(){
++++++++MockServletContext+mockContext+=+new+MockServletContext();
++++++++mockContext.setContextPath("/myapp");
++++++++return+mockContext;
++++}
}|code-block|syntax|javascript|785531|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I'm working in an older app (spring 3.1.1) that's configured via xml, but I needed to shuffle some config around for testing without deviating too far from the production config. My approach is to use a BeanPostProcessor.

<pre><code>package myapp.test;

import javax.servlet.ServletContext;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.config.BeanPostProcessor;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Import;
import org.springframework.context.annotation.ImportResource;
import org.springframework.mock.web.MockServletContext;
import org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer;

import myapp.spring.config.ComplexSpringConfiguration;

/**
 * Closely resembles production configuration for testing
 * @author jim
 */
@Configuration
@ImportResource("file:src/main/webapp/WEB-INF/spring-servlet.xml")
@Import(ComplexSpringConfiguration.class)
public class TestConfig {
 final Logger logger = LoggerFactory.getLogger(getClass());

 static {
 System.setProperty("env.test", "system");
 }

 //Override templateLoaderPath with something amenable to testing
 @Bean
 public BeanPostProcessor beanPostProcessor(){
 return new BeanPostProcessor(){
 @Override
 public Object postProcessBeforeInitialization(Object bean, String beanName) throws BeansException {
 //Override templateLoaderPath with something amenable to testing
 if(beanName.equals("freemarkerConfig")) {
 logger.debug("overriding bean with name:" + beanName);
 FreeMarkerConfigurer fc = new FreeMarkerConfigurer();
 fc.setTemplateLoaderPath("file:src/main/webapp/WEB-INF/freemarker");
 bean = fc;
 }
 return bean;
 }

 @Override
 public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
 return bean;
 } 
 };
 }

 @Bean
 public ServletContext servletContext(){
 MockServletContext mockContext = new MockServletContext();
 mockContext.setContextPath("/myapp");
 return mockContext;
 }
}
</code></pre>

I have an existing bean <code>overrideBean</code> defined in <code>spring.xml</code> which I would like to override using annotations. I have tried the following to override the bean:

<pre><code>@Configuration
@ImportResource({"/spring.xml"})
public class Main {

 public static void main(String[] args) {
 AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(DdwMain.class);

 Object o = context.getBean("overrideBean");
 // o should be null but it is not
 }

 @Bean(name="overrideBean")
 public OverrideBean overrideBean() {
 return null;
 }

}
</code></pre>

Using the above code the bean from the <code>spring.xml</code> config is always instantiated and returned by the <code>context.getBean</code> call. 

The bean can be overridden by including another XML config file in the <code>@ImportResource</code> however I would prefer to find a solution using annotations would be cleaner.

How do you override a spring bean defined in xml using Annotations?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我在spring.xml中定义了一个现有的bean spring.xml，我希望使用注释覆盖它。我尝试了以下操作来覆盖bean：@Configuration@ImportResource({"/spring.xml"})public class Main {    public static void main(Str...

问如何使用注释覆盖xml中定义的spring？
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