springboot静态资源配置

你的名字 2022-05-17 08:12 327阅读 0赞

将jquery.js和index.html放在src/main/resource源目录下

![70][]

输入地址 ,发现找不到资源

http://localhost:8088/jquery.js

![70 1][]

### **1.默认地址** ###

查看源码WebMvcAutoConfiguration.java中的WebMvcAutoConfigurationAdapter静态内部类WebMvcAutoConfigurationAdapter中的addResourceHandlers方法

@Override
    		    public void addResourceHandlers(ResourceHandlerRegistry registry) {
    			if (!this.resourceProperties.isAddMappings()) {
    				logger.debug("Default resource handling disabled");
    				return;
    			}
    			Duration cachePeriod = this.resourceProperties.getCache().getPeriod();
    			CacheControl cacheControl = this.resourceProperties.getCache()
    					.getCachecontrol().toHttpCacheControl();
    			if (!registry.hasMappingForPattern("/webjars/**")) {
    				customizeResourceHandlerRegistration(registry
    						.addResourceHandler("/webjars/**")
    						.addResourceLocations("classpath:/META-INF/resources/webjars/")
    						.setCachePeriod(getSeconds(cachePeriod))
    						.setCacheControl(cacheControl));
    			}
    			String staticPathPattern = this.mvcProperties.getStaticPathPattern();
    			if (!registry.hasMappingForPattern(staticPathPattern)) {
    				customizeResourceHandlerRegistration(
    						registry.addResourceHandler(staticPathPattern)
    								.addResourceLocations(getResourceLocations(
    										this.resourceProperties.getStaticLocations()))
    								.setCachePeriod(getSeconds(cachePeriod))
    								.setCacheControl(cacheControl));
    			}
    		}

跟踪this.resourceProperties.getStaticLocations()可以看到默认查找的地址

private static final String[] CLASSPATH_RESOURCE_LOCATIONS = {
    			"classpath:/META-INF/resources/", "classpath:/resources/",
    			"classpath:/static/", "classpath:/public/" };

将资源放在这四个位置,springboot可以找到.

**优先级顺序为：META-INF/resources > resources > static > public**

### 2.继承WebMvcConfigurerAdapter或者实现WebMvcConfigurer ###

package com.spring.boot.config.web;
    
    import org.springframework.boot.autoconfigure.web.servlet.WebMvcAutoConfiguration;
    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;
    
    @EnableWebMvc
    @Configuration
    public class mvcConfig extends WebMvcConfigurerAdapter{
    
        @Override
        public void addResourceHandlers(ResourceHandlerRegistry registry) {
            //将所有/** 访问都映射到classpath:/ 目录下
            //也可配置/static/** 访问都映射到classpath:/static/ 目录下
            registry.addResourceHandler("/**").addResourceLocations("classpath:/");
        }
    }

如果非必要的情况不建议这样配置,因为这样配置springboot的web自动配置将不生效,其它项需要自己配置

### 3.application.properties配置 ###

spring.resources.static-locations=classpath:/

可以配合spring.mvc.static-path-pattern使用

spring.resources.static-locations=classpath:/
    spring.mvc.static-path-pattern=/static/**

访问路径就变为

http://localhost:8080/static/jquery.js

4.maven编译打包

在pom.xml中配置

<build>
            <resources>
                <resource>
                    <directory>src/main/resources</directory>
                    
                    <targetPath>META-INF/resources</targetPath>
                    
                    <includes>
                        <include>index.html</include>
                        <include>jquery.js</include>
                    </includes>
                </resource>
                <resource>
                    <directory>src/main/resources</directory>
                    
                    <excludes>
                        <exclude>index.html</exclude>
                        <exclude>jquery.js</exclude>
                    </excludes>
                    <includes>
                        <include>**</include>
                    </includes>
                </resource>
            </resources>
        </build>

查看编译后的格式

![70 2][]

[70]: /images/20220517/4d5ea1f78c334fb99182a565d3ec460f.png
[70 1]: /images/20220517/cce45e6cce0d46478017b574189016f8.png
[70 2]: /images/20220517/d6231ac835ba42549e7df600df8cfbde.png