Spring中註解
@Autowired :spring註解
@Resource :J2EE註解
@Transactional(rollbackFor=Exception.class):指定回滾
@RequestMapping(value="/device/snap/{deviceCode}/{channelId}",method=RequestMethod.POST)
public @ResponseBody void snap(@PathVariable String deviceCode,@PathVariable String channelId, HttpServletRequest request, HttpServletResponse response)
[email protected]的對象通過適當的轉換器轉換為指定的格式之後,寫入到response對象的body區,通常用來返回JSON數據或者是XML
數據,需要註意的呢,在使用此註解之後不會再走試圖處理器,而是直接將數據寫入到輸入流中,他的效果等同於通過response對象輸出指定格式的數據。
[email protected]("/login")
[email protected]
public User login(User user){
return user;
}
User字段:userName pwd
那麽在前臺接收到的數據為:‘{"userName":"xxx","pwd":"xxx"}‘
效果等同於如下代碼:
[email protected]
public void login(User user, HttpServletResponse response){
response.getWriter.write(JSONObject.fromObject(user).toString());
}
public void sendProduct(@RequestParam int productId) @RequestParam:獲取請求參數
public String submitOrder(@ModelAttribute Order order, Model model) @ModelAttribute:使用鍵值order將Order實例添加到Model對象中
Spring中註解