Java 如何使return打印而不是跳转页面

给方法使用@ResponseBody

package controller;

importorg.springframework.stereotype.Controller;
importorg.springframework.web.bind.annotation.RequestMapping;
importorg.springframework.web.bind.annotation.RequestParam;
importorg.springframework.web.bind.annotation.ResponseBody;

@Controller
public class main {
    @RequestMapping("/main")
    @ResponseBody
    public String main(@RequestParam(value = "name", defaultValue = "000#") String rp) {
        return rp;
    }
}