ajax跨域

/** ????* 需求:根据token查询redis服务器用户身份信息 ????* 请求:http://localhost:8088/user/token/" + _ticket??callback=jQuery2795009&_=1506226664795 ????* 参数:String token ????* 返回值:E3mallResult ????* { ???????status: 200 ???????msg: "OK" ???????data: "{"id":1,"username":"zhangzhijun","phone":"15800807944", ???????"email":"420840806@qq.com","created":1414119176000,"updated":1414119179000}" ?????} ????*/ ???@RequestMapping("/user/token/{token}") ???@ResponseBody ???public Object findRedisWithToken(@PathVariable String token,String callback){ ???????//调用远程service对象方法 ???????E3mallResult result = userService.findRedisWithToken(token); ???????//判断是否跨域请求 ???????if(StringUtils.isBlank(callback)){ ???????????????????????//返回 ???????????return result; ???????} ???????//否则就是跨域请求 ???????//return "callback("++")" ???????//使用Jackson自动支持ajax跨域数据转换 ???????MappingJacksonValue jacksonValue = new MappingJacksonValue(result); ???????//设置回调函数 ???????jacksonValue.setJsonpFunction(callback); ???????????????return jacksonValue; ???}