SpringBoot如何进行跨域处理

Spring Boot 可以通过添加 CORS 配置来进行跨域处理，具体步骤如下：

1. 在 Spring Boot 应用程序中添加 CorsFilter 过滤器。

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

    @Override
    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-Headers", "Content-Type, Authorization, X-Requested-With");
        response.setHeader("Access-Control-Allow-Credentials", "true");
        if("OPTIONS".equalsIgnoreCase(request.getMethod())) {
            response.setStatus(HttpServletResponse.SC_OK);
        } else {
            chain.doFilter(req, res);
        }
    }

    @Override
    public void init(FilterConfig filterConfig) {
    }

    @Override
    public void destroy() {
    }

}

2. 在 Spring Boot 应用程序的配置文件中添加配置。

spring:
  cors:
    allowed-origins: "*"
    allowed-methods: POST, GET, OPTIONS, DELETE
    allowed-headers: Content-Type, Authorization, X-Requested-With
    allow-credentials: true
    max-age: 3600

以上是 Spring Boot 进行跨域处理的基本步骤，你可以根据具体情况调整配置内容。