Spring MVC Mybatis 使用JavaConfig 配置 Autowired注入失败的问题

Question

Junit测试成功，注入成功。

但是启动应用后，注入的实体报空指针异常。

请问这种问题是什么原因呢，谢谢。

三个配置类分别如下

一、WebInit 类

import com.lotus.api.RootConfig;
import com.lotus.api.WebConfig;
import org.springframework.web.filter.CharacterEncodingFilter;
import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;
import org.springframework.web.util.Log4jConfigListener;

import javax.servlet.Filter;
import javax.servlet.ServletContext;
import javax.servlet.ServletRegistration;

public class WebInit extends AbstractAnnotationConfigDispatcherServletInitializer {
    @Override
    protected Class<?>[] getRootConfigClasses() {
        return new Class[]{RootConfig.class};
    }

    @Override
    protected Class<?>[] getServletConfigClasses() {
        return new Class[]{WebConfig.class};
    }

    @Override
    protected String[] getServletMappings() {
        return new String[]{"/"};
    }

    @Override
    protected Filter[] getServletFilters() {
        //字符集拦截器
        CharacterEncodingFilter characterEncodingFilter = new CharacterEncodingFilter();
        characterEncodingFilter.setEncoding("UTF-8");
        characterEncodingFilter.setForceEncoding(true);
        return new Filter[]{characterEncodingFilter};
    }

    @Override
    protected void registerContextLoaderListener(ServletContext servletContext) {
        servletContext.setInitParameter("log4jConfigLocation"
                , "classpath:log4j.properties");
        servletContext.addListener(Log4jConfigListener.class);
    }

    @Override
    protected void customizeRegistration(ServletRegistration.Dynamic registration) {
        registration.setInitParameter("throwExceptionIfNoHandlerFound", "true");
    }
}

二、WebConfig

package com.lotus.api;


import com.lotus.api.interceptor.SecretInterceptor;
import com.lotus.service.ServiceNativeConfig;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Import;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;

@Configuration
@EnableWebMvc
@ComponentScan("com.lotus.api.web")
public class WebConfig extends WebMvcConfigurerAdapter {

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(new SecretInterceptor()).addPathPatterns("/**");
    }
}

三、RootConfig

package com.lotus.api;

import com.lotus.service.ServiceNativeConfig;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.FilterType;
import org.springframework.context.annotation.Import;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;

@Configuration
@ComponentScan(basePackages  = {"com.lotus.api"},
        excludeFilters = {@ComponentScan.Filter(type = FilterType.ANNOTATION, value = EnableWebMvc.class)})
@Import(ServiceNativeConfig.class)
public class RootConfig {
}

使用Junit测试的代码如下：

import com.lotus.api.RootConfig;
import com.lotus.service.attachment.AttachmentService;
import com.lotus.service.content.ContentService;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(classes = {RootConfig.class})
public class WebTest {

    @Autowired
    private AttachmentService attachmentService;

    @Autowired
    private ContentService contentService;

    @Test
    public void test(){
        attachmentService.add();
        System.out.println("SECCESS");
        System.out.println(contentService);
    }

 

Answer 1

上面代码看只有unitTest里进行了autowired，程序启动后哪个位置报空指针？