SpringMVC怎么开发返回json数据的web service 接口

@ResponseBody  
  @RequestMapping("/list")  
  public List list(ModelMap modelMap) {  
    String hql = "select c from Clothing c ";  
    Page page = new Page();  
    page.setPageSize(6);  
    page  = clothingServiceImpl.queryForPageByHql(page, hql);  
      
    return page.getResult();  
  }

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