解决跨域访问问题，只需在被访问的应用中加入一个请求过滤器：

 1public class CorsFilter implements Filter {
 2    @Override
 3    public void doFilter(ServletRequest request, ServletResponse response,
 4            FilterChain chain) throws IOException, ServletException {
 5
 6        HttpServletRequest req = (HttpServletRequest) request;
 7        HttpServletResponse res = (HttpServletResponse) response;
 8
 9        if (req.getHeader("Origin") != null) {
10            res.addHeader("Access-Control-Allow-Origin", "*");
11        }
12
13        if ("OPTIONS".equals(req.getMethod())) {
14            res.addHeader("Access-Control-Allow-Methods", "OPTIONS, GET, POST");
15            res.addHeader("Access-Control-Allow-Headers","Origin, Content-Type");
16            res.addHeader("Access-Control-Max-Age", "-1");
17        }
18        chain.doFilter(req, res);
19    }
20
21    @Override
22    public void destroy() {
23    }
24
25    @Override
26    public void init(FilterConfig filterConfig) throws ServletException {
27    }
28}