cors不适合我的春季启动应用程序

Question

这是我的webConfig

@Configuration
@EnableWebMvc
public class WebConfig extends WebMvcConfigurerAdapter {

    @Override
    public void addCorsMappings(CorsRegistry registry) {
        registry.addMapping("/**");
    }
}

我有一个/health端点,它返回一些健康数据,它工作正常.

这是junit测试

@Test
    public void corsTest() {
        HttpHeaders headers = new HttpHeaders();
        headers.add(HttpHeaders.ORIGIN, "http://localhost:9000");
        HttpEntity<?> requestEntity = new HttpEntity(headers);
        ResponseEntity<Status> entity = this.restTemplate.exchange("/health", HttpMethod.GET, requestEntity, Status.class);
        assertEquals(HttpStatus.OK, entity.getStatusCode());
        assertEquals("http://localhost:9000", entity.getHeaders().getAccessControlAllowOrigin()); //6
        Status health = entity.getBody();
        assertThat(health.getAppName()).isEqualTo(appName);
    }

测试在第6行失败.如果注释掉该行,则测试通过.通过调试器,我发现它entity.getHeaders().getAccessControlAllowOrigin()是null.我使用这个示例应用程序作为参考,它工作正常.但对于我的申请,它失败了.

当我使用javascript调用/ health api时,我可以看到cors工作.如果我注释掉webConfig类,我会在javascript中收到错误.在javascript上调试更多信息表明,未设置cors响应标头,但启用webconfig时请求成功提供.

所以绝对是科尔斯的作品.这是失败的考验.所以我猜测试是因为我不知道的原因没有看到它.

Answer 1

我认为你需要添加cors origin过滤器,我不确定,但我认为以下解决方案适合你.

import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.core.Ordered;
import org.springframework.core.annotation.Order;
import org.springframework.http.HttpMethod;
import org.springframework.http.HttpStatus;
import org.springframework.stereotype.Component;

@Component
@Order(Ordered.HIGHEST_PRECEDENCE)
public class SimpleCORSFilter implements Filter {

    public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException {

        HttpServletResponse response = (HttpServletResponse) res;
        HttpServletRequest request = (HttpServletRequest) req;
        response.setHeader("Access-Control-Allow-Origin", "*");
        response.setHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE");
        response.setHeader("Access-Control-Max-Age", "3600");
        response.setHeader("Access-Control-Allow-Credentials", "true");
        response.setHeader("Access-Control-Allow-Headers", "Origin,Accept,X-Requested-With,Content-Type,Access-Control-Request-Method,Access-Control-Request-Headers,Authorization");
        if(request.getMethod().equals(HttpMethod.OPTIONS.name())){
            response.setStatus(HttpStatus.NO_CONTENT.value());
        }else{
            chain.doFilter(req, res);
        }
    }

    public void init(FilterConfig filterConfig) {}

    public void destroy() {}
}