corsfilter过滤器的使用

2025-12-28 14:42:59

1、第一步：新建CorsFilter，在过滤器中设置相关请求头

package com.handlecar.basf_pmdb_service.filter;

import org.springframework.web.filter.OncePerRequestFilter;

corsfilter过滤器的使用

2、import javax.servlet.*;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import java.io.IOException;

public class CorsFilter extends OncePerRequestFilter {

corsfilter过滤器的使用

3、//public class CorsFilter implements Filter {

// static final String ORIGIN = "Origin";

protected void doFilterInternal(

HttpServletRequest request, HttpServletResponse response,

FilterChain filterChain) throws ServletException, IOException {

// String origin = request.getHeader(ORIGIN);

response.setHeader("Access-Control-Allow-Origin", "*");//* or origin as u prefer

corsfilter过滤器的使用

4、 response.setHeader("Access-Control-Allow-Credentials", "true");

response.setHeader("Access-Control-Allow-Methods", "PUT, POST, GET, OPTIONS, DELETE");

response.setHeader("Access-Control-Max-Age", "3600");

// response.setHeader("Access-Control-Allow-Headers", "content-type, authorization");

response.setHeader("Access-Control-Allow-Headers", "Origin, No-Cache, X-Requested-With, If-Modified-Since, Pragma, Last-Modified, Cache-Control, Expires, Content-Type, X-E4M-With, Authorization");

response.setHeader("XDomainRequestAllowed","1");

//使前端能够获取到

response.setHeader("Access-Control-Expose-Headers","download-status,download-filename,download-message");

if (request.getMethod().equals("OPTIONS"))

// response.setStatus(HttpServletResponse.SC_OK);

response.setStatus(HttpServletResponse.SC_NO_CONTENT);

else

filterChain.doFilter(request, response);

}

corsfilter过滤器的使用

5、// @Override

// public void doFilter(ServletRequest req, ServletResponse res,

// FilterChain chain) throws IOException, ServletException {

// HttpServletResponse response = (HttpServletResponse) res;

// //测试环境用【*】匹配，上生产环境后需要切换为实际的前端请求地址

// response.setHeader("Access-Control-Allow-Origin", "*");

// response.setHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE");

// response.setHeader("Access-Control-Max-Age", "0");

// response.setHeader("Access-Control-Allow-Headers", "Origin, No-Cache, X-Requested-With, If-Modified-Since, Pragma, Last-Modified, Cache-Control, Expires, Content-Type, X-E4M-With, auth");

// response.setHeader("Access-Control-Allow-Credentials", "true");

！

corsfilter过滤器的使用

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