Spring MVC轉發到新的URL保持現有

Question

我想重定向到前一頁是一個域對象是無效的。例如，使用Address的域對象。

@Autowired 
private Address address; 
@RequestMapping(method = RequestMethod.GET) 
public String addressPage(
    ModelMap model 
) throws StdAddFault { 
    model.addAttribute("address", address); 
    return TILE_GET_STARTED_ADDRESS; 
} 
@RequestMapping(value = "/validate", method = RequestMethod.POST) 
public String selectAddress(
    @Valid Address address, 
    BindingResult result, 
    Model model, 
    HttpSession session 
) throws StdAddFault { 
    if(result.hasErrors()) { 
    model.addAttribute("address", address); 
    return "/address"; 
    } 
    ... 
} 

問題是在請求之後，而不是/地址是/ address/validate。這似乎有點誤導，但如果我使用重定向或轉發，我失去了我的信息。

有沒有什麼辦法使控制器/地址後的url（僅適用於無效數據）？

更新

我證實了上述不起作用。這確實有效，但我擔心一個請求可能會覆蓋另一個地址。這是一個有效的關注嗎？

if(result.hasErrors()) { 
    this.address = address; 
    return "redirect:/get-started/address"; 
} 

Answer 1

該注入@ModelAttribute("address") Address address的答案我終於去了

@Controller 
@RequestMapping("/address") 
public class AddressController { 
    private String getMainPage(
    ModelMap model, 
    HttpSession session 
){ 
    if(!model.containsAttribute("address")) 
     model.addAttribute("address", new Address()); 
... 
    return TILE_GET_STARTED_ADDRESS; 
} 

@RequestMapping(value = URL_ADDRESS_SELECT, method = RequestMethod.POST) 
public String validateAddress(
    @Valid Address address, 
    BindingResult result, 
    Model model, 
    RedirectAttributes attr, 
    HttpSession session 
) throws StdAddFault { 
    if(result.hasErrors()) { 
    attr.addFlashAttribute("org.springframework.validation.BindingResult.address", result); 
    attr.addFlashAttribute("address", address); 
    return "redirect:/address"; 
    } 
    .... 
} 
} 

This問題+你們幫我出了一大堆！

Answer 2

我能做到這一點的2種方式之一，但我不知道要使用哪一個..

1）這裏

if(result.hasErrors()) { 
    this.address=address; 
    return "redirect:/get-started/address"; 
} 

我擔心使用自動裝配Autowired周圍對象生命週期運轉。一個電話可以覆蓋另一個地址嗎？

另一種選擇是使用會話...

private String getMainPage(
    ModelMap model, 
    HttpSession session 
){ 
    if(session.getAttribute("address") == null){ 
    session.setAttribute("address", new Address()); 
    } 
    model.addAttribute("mainNav", MAIN_NAV); 
    model.addAttribute("subNav", SUB_NAV); 
    model.addAttribute("address", session.getAttribute("address")); 
    return TILE_GET_STARTED_ADDRESS; 
} 

我真的想避免會話雖然。

Answer 3

好的，每次讓你的Controller實現BeanFactoryAware的時候都會得到一個新的對象。

然後實現方法setBeanFactory就像這樣。

private Address address. 

public void setBeanFactory(BeanFactory context) { 
    address = (Address)context.getBean("myAddress"); 
    } 

所以每次調用此setBeanFactory會得到一個地址對象，因爲範圍=原型將是一個新的對象。

Answer 4

我認爲你所追求的是存儲在會話中的「地址」模型屬性。這將保留唯一的地址對象每個用戶會話

@Controller 
@SessionAttributes({"address"}) 
@RequestMapping("/address") 
public class AddressController { 

    /** 
    * Injected model reference will contain 'address' if it exists in session 
    */ 
    @RequestMapping(method = RequestMethod.GET) 
    public String addressPage(Model model) { 
    if(!model.containsAttribute("address")) 
     model.addAttribute("address", new Address()); 
    return "address"; 
    } 

    /** 
    * This handler maps to form selecting/updating the address object 
    * at the end of this method the address object is automatically 
    * stored in session 
    */ 
    @RequestMapping(value = "/validate", method = RequestMethod.POST) 
    public String selectAddress(@ModelAttribute("address") Address address) { 
    // do stuff with the newly updated address.. 
    } 
} 

如果在其他任何處理程序，你需要的地址對象，所有你需要做的只是在參數