Spring 3.2 Web MVC @ModelAttribute没有标签

Question

我试图让Spring 3.2 MVC返回没有默认标签的JSON响应。

例如，

@Controller
@RequestMapping("/dt")
public class DTAgentsController {

@ModelAttribute
@RequestMapping(method = RequestMethod.GET, produces = "application/json;UTF-8")
    public DTResponse agents() {
        DTResponse resp = new DTResponse();
        resp.setsEcho(1);
        resp.setiTotalDisplayRecords(10);
        resp.setiTotalRecords(50);
        return resp;
    }
}

返回

{"DTResponse":{"sEcho":1,"iTotalRecords":50,"iTotalDisplayRecords":10}}

我只想要JSON输出

{"sEcho":1,"iTotalRecords":50,"iTotalDisplayRecords":10}

感谢。

Answer 1

问题不在于@ModelAttribute，它只是意味着要存储或从模型中获取的数据。您似乎使用了jQuery数据表，因此您应该将 @ResponseBody 添加到方法agents()。

@RequestMapping(method = RequestMethod.GET)
@ResponseBody
    public DTResponse agents() {
        DTResponse resp = new DTResponse();
        resp.setsEcho(1);
        resp.setiTotalDisplayRecords(10);
        resp.setiTotalRecords(50);
        return resp;
    }
}