開發配置：

• IntelliJ Idea
• JDK 1.8.0.131 64-bit
• spring boot 1.5.8

1.新建專案

使用Idea新建專案，預設情況下，resource下：META-INF/resources、resources,static、public下的靜態檔案可直接訪問，如下所示：

2.使用@EnableWebMvc並繼承WebMvcConfigurerAdapter類之後，無法訪問靜態資源

WebConfig

package com.example.demo.config;

import org.springframework.context.annotation.ComponentScan;
import
 
 org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;

/**
 * @author Aaron
 */
@Configuration
@EnableWebMvc
@ComponentScan
public class WebConfig extends
 
 WebMvcConfigurerAdapter {

}

解決：
將預設的靜態資源範圍路徑加回來：

package com.example.demo.config;

import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import
 
 org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;

/**
 * @author Aaron
 */
@Configuration
@EnableWebMvc
@ComponentScan
public class WebConfig extends WebMvcConfigurerAdapter {
    private static final String[] CLASSPATH_RESOURCE_LOCATIONS = {
            "classpath:/META-INF/resources/", "classpath:/resources/",
            "classpath:/static/", "classpath:/public/"};

    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.addResourceHandler("/**").addResourceLocations(CLASSPATH_RESOURCE_LOCATIONS);
    }

}

再次訪問靜態資源，ok！