2025年跨域请求的三种方法(跨域请求的三种方法是)

跨域请求的三种方法(跨域请求的三种方法是)import java io IOException import javax servlet FilterChain import javax servlet ServletExcep import javax servlet http HttpServletR import javax servlet http HttpServletR

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import java.io.IOException; import javax.servlet.FilterChain; import javax.servlet.ServletException; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.springframework.web.filter.OncePerRequestFilter; /
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  • 无需配置,跨所有域,可用于测试,生产环境建议使用校验完整的过滤器 */ public class CORSFilterEasy extends OncePerRequestFilter{ protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain) throws ServletException, IOException {
    讯享网response.addHeader(</span>"Access-Control-Allow-Origin", "*"<span style="color: rgba(0, 0, 0, 1)">); </span><span style="color: rgba(0, 0, 255, 1)">if</span>(request.getHeader("Access-Control-Request-Method") != <span style="color: rgba(0, 0, 255, 1)">null</span> &amp;&amp; "OPTIONS"<span style="color: rgba(0, 0, 0, 1)">.equals(request.getMethod())) { response.addHeader(</span>"Access-Control-Allow-Methods", "HEAD,GET,POST,PUT,DELETE,OPTIONS"<span style="color: rgba(0, 0, 0, 1)">); response.addHeader(</span>"Access-Control-Allow-Headers", "Content-Type,Origin,Accept"<span style="color: rgba(0, 0, 0, 1)">); response.addHeader(</span>"Access-Control-Max-Age", "120"<span style="color: rgba(0, 0, 0, 1)">); } filterChain.doFilter(request, response); 
    } }

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