Question

我正在尝试使用Spring MVC和JavaConfigs而不是XML文件来创建Hello World应用程序。我读过如果使用@Configuration注释类，可以使用@Bean声明bean。我有一个用@Configuration注释的类和一个用@Bean注释的方法。

我在IntelliJ 12中收到错误消息（红色下划线错误）：

@Bean方法仅在@Configuration中声明时才有效注释类

Tomcat 7.0.37启动时出现以下错误消息：

SEVERE: Context initialization failed
org.springframework.beans.factory.BeanDefinitionStoreException: Failed to read candidate component class: file [S:\dropbox\Shared Folders\Majerus Eric (BBY)\SpringMVCBarebones\target\SpringMVCBarebones\WEB-INF\classes\com\springapp\mvc\WebAppConfig.class]; nested exception is java.lang.annotation.AnnotationFormatError: Invalid default: public abstract org.springframework.beans.factory.annotation.Autowire org.springframework.config.java.annotation.Bean.autowire()

WebAppConfig

package com.springapp.mvc;

import org.springframework.config.java.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.DefaultServletHandlerConfigurer;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import org.springframework.web.servlet.view.InternalResourceViewResolver;

@EnableWebMvc
@ComponentScan("com.springapp.mvc")
@Configuration
public class WebAppConfig extends WebMvcConfigurerAdapter {

    @Override
    public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
        configurer.enable();
    }

    @Bean
    public InternalResourceViewResolver getInternalResourceViewResolver() {
        InternalResourceViewResolver resolver = new InternalResourceViewResolver();
        resolver.setPrefix("/WEB-INF/pages/");
        resolver.setSuffix(".jsp");
        return resolver;
    }
}

WebAppInitializer

package com.springapp.mvc;

import org.springframework.web.WebApplicationInitializer;
import org.springframework.web.context.ContextLoaderListener;
import org.springframework.web.context.support.AnnotationConfigWebApplicationContext;
import org.springframework.web.servlet.DispatcherServlet;


import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletRegistration;

public class WebAppInitializer implements WebApplicationInitializer {

    @Override
    public void onStartup(ServletContext container) throws ServletException {

        // Create the 'root' Spring application context.
        AnnotationConfigWebApplicationContext rootContext = new AnnotationConfigWebApplicationContext();

        // Manage the lifecycle of the root application context.
        container.addListener(new ContextLoaderListener(rootContext));

        // Create the dispatcher servlet's Spring application context
        AnnotationConfigWebApplicationContext dispatcherContext = new AnnotationConfigWebApplicationContext();
        dispatcherContext.register(WebAppConfig.class);

        ServletRegistration.Dynamic dispatcher = container.addServlet("dispatcher", new DispatcherServlet(dispatcherContext));
        dispatcher.setLoadOnStartup(1);
        dispatcher.addMapping("/");
    }
}

作为一个例子，我使用了本教程：Migrate Spring MVC servlet.xml to Java Config以及WebAppInitializer上的Spring文档。

我的git repo托管在Bitbucket here上。

Answer 1

看看你的pom，你添加了spring-javaconfig。 spring-javaconfig已合并到spring 3.X中，因此您不需要它。删除它，它应该运行正常。

“@Bean方法仅在@Configuration带注释的类中声明时才有效”错误

1 个答案: