JAVA高级面试进阶训练营视频教程

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1.使用@CrossOrigin注解实现
 (1).对单个接口配置CORS

1 @CrossOrigin(origins = {"*"}) 2 @PostMapping("/hello")
3 @ResponseBody
4 public ResultVO hello() {
5     return new ResultVO(1,"成功");
6 }

 (2).对某个Controller下的所有接口配置CORS

@CrossOrigin
@Controller
public class HelloController {

}

2.配置全局的CORS

（1）添加配置类

 1 package com.yltx.api.config;
 2 
 3 import org.springframework.context.annotation.Bean;
 4 import org.springframework.context.annotation.Configuration;
 5 import org.springframework.web.cors.CorsConfiguration;
 6 import org.springframework.web.cors.UrlBasedCorsConfigurationSource;
 7 import org.springframework.web.filter.CorsFilter;
 8 
 9 /**
10  * @Author: Hujh
11  * @Date: 2019/5/9 15:49
12  * @Description: Cors跨域配置
13  */
14 @Configuration
15 public class CorsConfig {
16     @Bean
17     public CorsFilter corsFilter() {
18         final UrlBasedCorsConfigurationSource urlBasedCorsConfigurationSource = new UrlBasedCorsConfigurationSource();
19         final CorsConfiguration corsConfiguration = new CorsConfiguration();
20         corsConfiguration.setAllowCredentials(true);
21         corsConfiguration.addAllowedOrigin("*");
22         corsConfiguration.addAllowedHeader("*");
23         corsConfiguration.addAllowedMethod("*");
24         urlBasedCorsConfigurationSource.registerCorsConfiguration("/**", corsConfiguration);
25         return new CorsFilter(urlBasedCorsConfigurationSource);
26     }
27 }

（2）添加配置类

 1 import org.springframework.context.annotation.Configuration;
 2 import org.springframework.web.servlet.config.annotation.CorsRegistry;
 3 import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;
 4 
 5 /**
 6  * @Author: Hujh
 7  * @Date: 2019/5/9 16:18
 8  * @Description:
 9  */
10 @Configuration
11 public class WebMvcConfig extends WebMvcConfigurationSupport {
12     @Override
13     public void addCorsMappings(CorsRegistry registry) {
14         registry.addMapping("/**")
15                 .allowedOrigins("*")
16                 .allowedMethods("POST", "GET", "PUT", "OPTIONS", "DELETE")
17                 .maxAge(3600)
18                 .allowCredentials(true);
19     }
20 }

 

注：添加配置类方法取一即可.