前言
之前在Windows10本地 调试一个旧项目,手机移动端用的是Uni-app,vue的版本是v2。后端是java spring-boot。运行手机移动端的首页请求后台接口老是提示错误信息。
错误信息如下:
Access to XMLHttpRequest at 'http://localhost:8080/api/industry/getIndustryList' from origin 'http://localhost:8081' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource.
翻译后 :
从源“http://localhost:8081”访问“http://localhost:8080/api/industry/getIndustryList”的XMLHttpRequest已被CORS策略阻止:对预检请求的响应未通过访问控制检查:请求的资源未包含“Access-Control-Allow-Origin”标头。
解决问题:
1,在uni-app项目 修改
"h5" : {"title" : "","domain" : "","devServer" : {"proxy" : {"/api/": {"target":"http://localhost:8080/api/","changeOrigin": true,"pathRewrite": {"^/api": ""}}}}},
2,java端修改继承WebMvcConfigurer的重写addCorsMappings()方法代码
public class InterceptorConfig implements WebMvcConfigurer {@Overridepublic void addCorsMappings(CorsRegistry registry) {registry.addMapping("/**") // 对所有路径应用.allowedOrigins("http://localhost:8081") // 允许的来源,根据实际情况修改.allowedMethods("GET", "POST", "PUT", "DELETE") // 允许的方法.allowedHeaders("*") // 允许的头部.allowCredentials(true) // 是否发送Cookie.maxAge(3600); // 预检请求的有效期(秒)}
}