Preflight response is not successful

最新推荐文章于 2025-05-19 11:24:32 发布

转载最新推荐文章于 2025-05-19 11:24:32 发布 · 4.8k 阅读

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原文链接：https://my.oschina.net/u/2464371/blog/2962811

文章标签：

#java #python #javascript #ViewUI

本文详细介绍了如何在Spring框架中解决跨域问题，包括使用@CrossOrigin注解和配置CorsFilter过滤器的方法，适用于Spring4.2及以上版本。

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XMLHttpRequest cannot load http://130.51.23.12:8180/remoteLogin. Preflight response is not successful 之前遇到过，跨域的原因。增加注解解决： @CrossOrigin(origins = "*", maxAge = 3600)

这个注解spring4.2之后才有。

如果低于4.2版本，增加filter：

import javax.servlet.*;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

public class CorsFilter implements Filter {
    public void init(FilterConfig filterConfig) throws ServletException {}

    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
            throws IOException, ServletException {
        HttpServletResponse httpServletResponse = (HttpServletResponse) response;
        httpServletResponse.setHeader("Access-Control-Allow-Origin", "*");
        httpServletResponse.setHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE");
        httpServletResponse.setHeader("Access-Control-Max-Age", "3600");
        httpServletResponse.setHeader("Access-Control-Allow-Headers",
                "Content-Type, Access-Control-Allow-Headers, Authorization, X-Requested-With, Access-Control-Allow-Methods, Access-Control-Allow-Origin");
        httpServletResponse.setHeader("Access-Control-Allow-Credentials", "true");// 允许cookie
        chain.doFilter(request, response);
    }

    public void destroy() {}
}

web.xml

    <filter>
        <filter-name>corsFilter</filter-name>
        <filter-class>com.x.sso.cas.server.security.CorsFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>corsFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

转载于:https://my.oschina.net/u/2464371/blog/2962811