springboot非注解跨域

import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.CorsRegistry;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;


@Configuration
public class
WebConfig extends WebMvcConfigurerAdapter {

    @Override
    public void addCorsMappings(CorsRegistry registry) {
        registry.addMapping("/**")
                .allowedOrigins("http://127.0.0.1:80","http://127.0.0.1")
                .allowedMethods("GET", "HEAD", "POST","PUT", "DELETE", "OPTIONS")
                .allowCredentials(true).maxAge(3600);
    }
}

allowedOrigins里面可以直接写*，表示所有地址，可是在前后端分离的时候我们会用到cookies,写*前端请求的时候不会带cookies,所以还是直接写ip地址吧！

springboot 中有一个注解加在你需要跨域的接口上就可以了

@CrossOrigin(origins = "*")
@RequestMapping("/queryContentCollectTb")
public ContentCollectTbEntity queryContentCollectTb(@RequestParam String articleIdB){
    ContentCollectTbEntity contentCollectTb = articleCollectTbService.queryContentCollectTb(articleIdB);
    return contentCollectTb;
}