SpringBoot 静态资源 使用项目外部路径图片 跨域问题CORS 解决

配置类

package com.zz.config;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;

@Configuration
public class WebAppConfig extends WebMvcConfigurerAdapter {

    @Value("${imagesPath}")
    private String mImagesPath;
    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        if(mImagesPath.equals("") || mImagesPath.equals("${imagesPath}")){
            String imagesPath = WebAppConfig.class.getClassLoader().getResource("").getPath();
            if(imagesPath.indexOf(".jar")>0){
                imagesPath = imagesPath.substring(0, imagesPath.indexOf(".jar"));
            }else if(imagesPath.indexOf("classes")>0){
                imagesPath = "file:"+imagesPath.substring(0, imagesPath.indexOf("classes"));
            }
            imagesPath = imagesPath.substring(0, imagesPath.lastIndexOf("/"))+"/images/";
            mImagesPath = imagesPath;
        }
        //LoggerFactory.getLogger(WebAppConfig.class).info("imagesPath="+mImagesPath);
        registry.addResourceHandler("/images/**").addResourceLocations(mImagesPath);
        // TODO Auto-generated method stub
        super.addResourceHandlers(registry);
    }
}

配置文件设置外面路径地址

application.properties

## 图片上传真是地址
imagesPath=file:/C:/upload/

测试 访问图片路径： http://localhost:9001/core/images/2.jpg

图片实际存放路径：C:\upload

SpringBoot2.X

Springboot2 里面WebMvcConfigurerAdapter 已经过时。

推荐使用接口 WebMvcConfigurer 。

package com.cy.config;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

@Configuration
public class WebAppConfig implements WebMvcConfigurer {

    @Value("${imagesPath}")
    private String mImagesPath;
    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        if(mImagesPath.equals("") || mImagesPath.equals("${imagesPath}")){
            String imagesPath = WebAppConfig.class.getClassLoader().getResource("").getPath();
            if(imagesPath.indexOf(".jar")>0){
                imagesPath = imagesPath.substring(0, imagesPath.indexOf(".jar"));
            }else if(imagesPath.indexOf("classes")>0){
                imagesPath = "file:"+imagesPath.substring(0, imagesPath.indexOf("classes"));
            }
            imagesPath = imagesPath.substring(0, imagesPath.lastIndexOf("/"))+"/images/";
            mImagesPath = imagesPath;
        }
        //LoggerFactory.getLogger(WebAppConfig.class).info("imagesPath="+mImagesPath);
        registry.addResourceHandler("/images/**").addResourceLocations(mImagesPath);
        // TODO Auto-generated method stub
    }
}

跨域问题CORS 统一处理

package com.zz.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.CorsRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

/**
 * @Description: java类作用描述
 * @Author: Bsea
 * @CreateDate: 2019/10/9$ 21:33$
 */
@Configuration
public class CorsConfig {
    @Bean
    public WebMvcConfigurer corsConfigurer() {
        return new WebMvcConfigurer() {
            @Override
            public void addCorsMappings(CorsRegistry registry) {
                registry.addMapping("/**")
                        .allowedOrigins("*");//允许域名访问，如果*，代表所有域名
            }
        };
    }
}

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