SpringBoot解决接口跨域问题

在Spring Boot 2.X应用程序中可以使用注解@CrossOrigin，也可以通过使用WebMvcConfigurer对象来定义全局CORS配置。

1. @CrossOrigin注解示例代码

 

接口类：HelloController

@RestController
public class HelloController {
@CrossOrigin
@RequestMapping("/hello")
public String HelloSpring (){
    return "解决跨域了";
}

}

　　

WebMvcConfigurer对象示例代码

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.CorsRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
@Configuration

public class MyConfiguration {

@Bean

public WebMvcConfigurer corsConfigurer() {

return new WebMvcConfigurer() {

@Override

public void addCorsMappings(CorsRegistry registry) {

registry.addMapping("/")

.allowedOrigins("")

.allowCredentials(true)

.allowedMethods("GET", "POST", "DELETE", "PUT","PATCH")

.maxAge(3600);

}

};

}

}