最近在开发过程中遇到Access-Control-Allow-Origin这个问题，下面是个人网上搜罗的方法

文章目录

前言一、添加配置文件二，创建文件1.创建CorsFilter类2.创建CorsConfig类

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前言

这个方法适用于springboot

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提示：以下是本篇文章正文内容，下面案例可供参考

一、添加配置文件

springboot的配置文件里添加，允许同一个局域网下的人访问

#配置同一个局域网访问 server.address=0.0.0.0

二，创建文件

1.创建CorsFilter类

代码如下（示例）：

import org.springframework.stereotype.Component; import javax.servlet.*; import javax.servlet.annotation.WebFilter; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.IOException; /** * @description:过滤器 * @author: GavenLee * @time: 2020/10/20 9:53 */ @Component @WebFilter(urlPatterns = "/*", filterName = "CorsFilter") public class CorsFilter implements Filter { @Override public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException { HttpServletResponse response = (HttpServletResponse) res; HttpServletRequest reqs = (HttpServletRequest) req; String curOrigin = reqs.getHeader("Origin"); response.setHeader("Access-Control-Allow-Origin", curOrigin == null ? "true" : curOrigin); response.setHeader("Access-Control-Allow-Credentials", "true"); response.setHeader("Access-Control-Allow-Methods", "POST, GET, PATCH, DELETE, PUT"); response.setHeader("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept"); chain.doFilter(req, res); } @Override public void init(FilterConfig filterConfig) { System.out.println("=======================================================出来了================================================="); } @Override public void destroy() {} }

2.创建CorsConfig类

代码如下（示例）：

import org.springframework.context.annotation.Configuration; import org.springframework.web.servlet.config.annotation.CorsRegistry; import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter; /** * @description:跨域请求配置 * @author: GavenLee * @time: 2020/10/20 9:55 */ @Configuration public class CorsConfig extends WebMvcConfigurerAdapter { @Override public void addCorsMappings(CorsRegistry registry) { registry.addMapping("/**").allowedOrigins("*") .allowedMethods("GET", "HEAD", "POST","PUT", "DELETE", "OPTIONS") .allowCredentials(true).maxAge(3600); } }

重启项目ok

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