配置tomcat7允许跨域访问

在web.xml文件中加入以下内容:

<filter>
  <filter-name>CorsFilter</filter-name>
  <filter-class>cn.iqoo.api.filter.CorsFilter</filter-class>
</filter>
<filter-mapping>
  <filter-name>CorsFilter</filter-name>
  <url-pattern>/*</url-pattern>
</filter-mapping>

即可支持js的跨域请求了.

 

第二

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/*  * @Project_Name: iqoo-parent  * @File_Name: CorsFilter  * @Package_Name: cn.iqoo.api.filter  * @Date: 17-3-2 下午10:41  * @Creator: jonath  * @Line: ----------------------------------------  */ package cn.iqoo.api.filter;   import javax.servlet.*; import javax.servlet.http.HttpServletResponse; import java.io.IOException;   /**  * TODO:  *  * @author: jonath  * @date: 17-3-2  */ 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 httpResponse = (HttpServletResponse) servletResponse;         httpResponse.addHeader("Access-Control-Allow-Origin", "*");         httpResponse.setHeader("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept");         httpResponse.setHeader("Access-Control-Allow-Methods", "GET, PUT, DELETE, POST");         filterChain.doFilter(servletRequest, servletResponse);     }       @Override     public void destroy() {       } }