@RequestMapping("/token/{token}")
@ResponseBody
public Object getUserByToken(@PathVariable String token,String callback) {
	Person per = null;
	try {
		per = userService.getPerson(token);
	} catch (Exception e) {
		e.printStackTrace();
		per = ExceptionUtil.getStackTrace(e);
	}
	
	//判断是否为jsonp调用
	if (StringUtils.isBlank(callback)) {
		return per;
	} else {
		MappingJacksonValue mappingJacksonValue = new MappingJacksonValue(per);
		mappingJacksonValue.setJsonpFunction(callback);
		return mappingJacksonValue;
	}
 
}

说明：MappingTacksonValue为spring4.x以后支持，依赖包为spring-web-4.x.x.RELEASE.jar

$.ajax({
	url : "http://localhost:8084/user/token/" + _ticket,dataType : "jsonp",type : "GET",data:{
		callback : 'test'
	},success : function(data){
		console.log(data);
	}
});

function test(data){
<span style="white-space:pre">	</span>console.log(data);
}