springboot3解决跨域的几种方式小结

@RestController
@RequestMapping("/user")
@CrossOrigin(origins = "*")//允许所有来源的请求跨域
@Tag(name = "用户模块")
public class UserController {
    private final UserService userService;
 
    public UserController(UserService userService) {
        this.userService = userService;
    }
 
    @PostMapping("/login")
    @Operation(summary = "用户登录")
    public UserLoginVO login(@RequestBody @Validated UserLoginDTO userLoginDTO) {
        return userService.login(userLoginDTO);
    }
 
}

import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.CorsRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
 
/**
 * @author mijiupro
 */
@Configuration
public class WebConfig implements WebMvcConfigurer {
    @Override
    public void addCorsMappings(CorsRegistry registry) {
        registry.addMapping("/**") // 对所有路径生效
                .allowedOrigins("*") //允许所有源地址
                // .allowedOrigins("https://mijiupro.com","https://mijiu.com ") // 允许的源地址（数组）
                .allowedMethods("GET", "POST", "PUT", "DELETE") // 允许的请求方法
                .allowedHeaders("*"); // 允许的请求头
    }
}

import jakarta.servlet.*;
import jakarta.servlet.http.HttpServletResponse;
import org.springframework.stereotype.Component;
 
import java.io.IOException;
 
/**
 * @author mijiupro
 */
@Component
public class CorsFilter implements Filter {
 
    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
            throws IOException, ServletException {
        // 将 ServletResponse 转换为 HttpServletResponse
        HttpServletResponse httpResponse = (HttpServletResponse) response;
 
        // 设置允许跨域请求的源地址
        httpResponse.setHeader("Access-Control-Allow-Origin", "https://mijiupro.com");
 
        // 设置允许的请求方法
        httpResponse.setHeader("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE");
 
        // 设置允许的请求头
        httpResponse.setHeader("Access-Control-Allow-Headers", "*");
 
        // 继续执行 Filter 链
        chain.doFilter(request, response);
    }
}