跨域问题：Access

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跨域问题：Access

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项目合作的时候，出现跨域访问，虽然种种迹象表明、跨域不安全、对于合作项目，来说跨域也不是不可

解决办法：【项目完结后将跨域取消即可】

修改跨域问题在Java后端解决

web.xml中

<filter> <filter-name>crossDomain</filter-name> <filter-class>online.wenmeng.filter.crossDomain</filter-class> </filter> <filter-mapping> <filter-name>CharacterEncodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping>

crossDomain 复制这个类，放到你的项目中【要与上面过滤器中class对应】

package online.wenmeng.filter; import javax.servlet.*; import javax.servlet.http.HttpServletResponse; import java.io.IOException; /** * @Descrintion: 解决跨域问题的过滤器 * @version: 1.0 */ public class crossDomain implements Filter { @Override public void init(FilterConfig filterConfig) throws ServletException { } @Override public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException { // 将ServletResponse转换为HttpServletResponse HttpServletResponse httpResponse = (HttpServletResponse) res; httpResponse.setHeader("Access-Control-Allow-Origin", "*"); httpResponse.setContentType("application/json;charset=UTF-8"); httpResponse.setHeader("Access-Control-Allow-Methods", "GET, HEAD, POST, PUT, DELETE, OPTIONS, PATCH"); httpResponse.setHeader("Access-Control-Max-Age", "3600"); httpResponse.setHeader("Access-Control-Allow-Headers", "Content-Type,Access-Token"); // 如果要把Cookie发到服务器，需要指定Access-Control-Allow-Credentials字段为true httpResponse.setHeader("Access-Control-Allow-Credentials", "true"); httpResponse.setHeader("Access-Control-Expose-Headers", "*"); chain.doFilter(req, res); } @Override public void destroy() { } } 重启项目，或者重新打包上传到云服务器，跨域问题解决

 

 

 

 

 

 

 

 

 

 

 

本文标签： Access