springboot+mybaits项目解决前后端分离出现的跨域问题

创建WebMvcConfig类继承WebMvcConfigurerAdapter重写addCorsMappings方法并加入如下代码

import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.CorsRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
@Configuration
public class WebMvcConfig extends WebMvcConfigurerAdapter{

    @Autowired
    private InterceptorConfig interceptorConfig;
    
    /**配置拦截器 */
    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(interceptorConfig).addPathPatterns("/**");
    }
    @Override
    //解决跨域问题
    public void addCorsMappings(CorsRegistry registry) {
        registry.addMapping("/**")
                .allowedOrigins("*")
                .allowedMethods("POST", "GET", "PUT", "OPTIONS", "DELETE")
                .allowedHeaders("authorization","Accept","Content-Type")
                .maxAge(3600)
                .allowCredentials(true);
    }
}

在controller类上加上注解

@CrossOrigin({"http://localhost:8080","null"})

让整个类的方法成为可跨域访问的方法