package com.test.test.conf;
import org.springframework.stereotype.Component;
import javax.servlet.*;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.lang.annotation.Annotation;
//攔截器新增跨域支援（如果是web.xml配置攔截器，請將@component刪除）
@Component
public class CORSFilter implements 
 
Filter {
@Override
public void init(FilterConfig filterConfig) throws ServletException {
    }
@Override
public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
HttpServletResponse response = (HttpServletResponse
 
) servletResponse;
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", "x-requested-with");
filterChain.doFilter
 
(servletRequest, servletResponse);
    }
@Override
public void destroy() {
    }
}

以上是註解的配置方式

下面是web.xml的配置方式

<!--解決跨域訪問-->
<filter>
    <filter-name>crossorigin</filter-name>
    <filter-class>com.test.test.crossorigin</filter-class>
</filter>
<filter-mapping>
    <filter-name>crossorigin</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>