SpringMVC后台实现跨域支持

@Override
public boolean preHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o) throws Exception {
//增加跨域支持
httpServletResponse.setHeader("Access-Control-Allow-Origin", "*");
httpServletResponse.setHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE");
httpServletResponse.setHeader("Access-Control-Max-Age", "3600");
httpServletResponse.setHeader("Access-Control-Allow-Headers", "x-requested-with");

return true;
}