SpringBoot--跨域--解决/处理/方法/方案

左手的ㄟ右手 2022-09-12 11:47 226阅读 0赞

原文网址：[SpringBoot--跨域--解决/处理/方法/方案\_IT利刃出鞘的博客-CSDN博客][SpringBoot--_--_IT_-CSDN]

# 其他网址 #

[Spring Boot 解决跨域问题的 3 种方案！ - Java技术栈 - 博客园][Spring Boot _ 3 _ - Java_ -]  
[Springboot处理CORS跨域请求的三种方法\_陈哈哈的菜园子-CSDN博客][Springboot_CORS_-CSDN]

# 方案1：实现WebMvcConfigurer接口 #

package com.example.demo.common.config;
    
    import org.springframework.context.annotation.Configuration;
    import org.springframework.web.servlet.config.annotation.CorsRegistry;
    import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
    
    @Configuration
    public class CorsConfig implements WebMvcConfigurer {
        @Override
        public void addCorsMappings(CorsRegistry registry) {
            registry.addMapping("/**")
                    // .allowedOrigins("*") // SpringBoot2.4.0之前的版本
                    .allowedOriginPatterns("*") // SpringBoot2.4.0及之后的版本
                    .allowedMethods("GET", "HEAD", "POST", "PUT", "DELETE", "OPTIONS")
                    .allowCredentials(true)
                    .maxAge(3600)
                    .allowedHeaders("*");
        }
    }

# 方案2：过滤器 #

就是在response中写入这些响应头。

import org.springframework.context.annotation.Configuration;
    import javax.servlet.*;
    import javax.servlet.annotation.WebFilter;
    import javax.servlet.http.HttpServletResponse;
    import java.io.IOException;
    @WebFilter(filterName = "CorsFilter ")
    @Configuration
    public class CorsFilter implements Filter {
        @Override
        public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) 
                throws IOException, ServletException {
            HttpServletResponse response = (HttpServletResponse) res;
            response.setHeader("Access-Control-Allow-Origin","*");
            response.setHeader("Access-Control-Allow-Credentials", "true");
            response.setHeader("Access-Control-Allow-Methods", 
                "POST, GET, PATCH, DELETE, PUT");
            response.setHeader("Access-Control-Max-Age", "3600");
            response.setHeader("Access-Control-Allow-Headers", 
                "Origin, X-Requested-With, Content-Type, Accept");
            chain.doFilter(req, res);
        }
    }

# 方案3：采用注解@CrossOrigin #

@RestController
    @CrossOrigin
    @RequestMapping("/situation")
    public class TestController {
     
    }

[SpringBoot--_--_IT_-CSDN]: https://knife.blog.csdn.net/article/details/120461338
[Spring Boot _ 3 _ - Java_ -]: https://www.cnblogs.com/javastack/p/14255114.html
[Springboot_CORS_-CSDN]: https://blog.csdn.net/qq_39390545/article/details/106615075