【Java】Spring Boot 配置Filter 解决跨域问题

PlanOne_A

已于 2022-08-10 15:16:01 修改

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分类专栏： Java 文章标签： java spring boot servlet

于 2022-08-08 20:07:43 首次发布

本文链接：https://blog.youkuaiyun.com/weixin_44798538/article/details/126235058

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编写过滤器

package com.manager.oa.filter;

import lombok.extern.slf4j.Slf4j;

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

/**
 * @Author sms
 * @Version V1.0.0
 * @Date 2022-08-08
 */
@Slf4j
public class CrossDomainFilter implements Filter {
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {

    }

    @Override
    public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException {
        log.debug("【过滤器】:进入到过滤器-》");
        HttpServletResponse httpResponse = (HttpServletResponse) res;
        httpResponse.setHeader("Access-Control-Allow-Origin", "*");  // 允许跨域的地址为所有
        httpResponse.setHeader("Access-Control-Allow-Headers", "Content-Type,Content-Length, Authorization, Accept,X-Requested-With,X-App-Id, X-Token");
        httpResponse.addHeader("Access-Control-Max-Age", "3600");  // 非简单请求，只要第一次通过OPTIONS检查 在1小时之内不会在调用OPTIONS进行检测
        httpResponse.setHeader("Access-Control-Allow-Credentials", "true");  // 带有Cookie的跨域请求，此值必须设置为true。
        if (((HttpServletRequest) req).getMethod().equals("OPTIONS")) {
            httpServletResponse.setStatus(200);
            return;
        }
        chain.doFilter(req, httpResponse);
    }

    @Override
    public void destroy() {

    }
}

添加配置信息

@Bean
public FilterRegistrationBean myFilterRegistrationBean() {
    FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean(new CrossDomainFilter());
    // 添加过滤路径
    filterRegistrationBean.addUrlPatterns("/*");
    // 保证在所有过滤器之前执行
    filterRegistrationBean.setOrder(Integer.MIN_VALUE);
    return filterRegistrationBean;
}