前后端分离开发解决前端静态资源跨域请求问题

前端静态资源发起请求时首先会发送一个域请求，后端通过后再次发起get、post请求

使用过滤器对域请求授权，这里授权了一个特殊的token请求字段，可以根据自己的业务添加请求字段。

import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* Servlet Filter implementation class HttpFilter
*/
public class HttpFilter implements Filter {
/**
* Default constructor.
*/
public HttpFilter() {
// TODO Auto-generated constructor stub
}
/**
* @see Filter#destroy()
*/
public void destroy() {
// TODO Auto-generated method stub
}
/**
* @see Filter#doFilter(ServletRequest, ServletResponse, FilterChain)
*/
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
HttpServletResponse resp=(HttpServletResponse)response;
HttpServletRequest rep = (HttpServletRequest) request;
resp.setHeader("Access-Control-Allow-Origin", rep.getHeader("Origin"));
resp.setHeader("Access-Control-Allow-Methods", "POST, GET,PUT, OPTIONS, DELETE,PUT");
resp.setHeader("Access-Control-Allow-Headers", "x-requested-with,Authorizationaccept, origin, content-type, token");
//允许跨域请求中携带cookie
resp.setHeader("Access-Control-Allow-Credentials","true");
chain.doFilter(request, response);
}
/**
* @see Filter#init(FilterConfig)
*/
public void init(FilterConfig fConfig) throws ServletException {
// TODO Auto-generated method stub
}
}

最后

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