Question

我正在尝试从spring控制器中的一个url重定向到另一个url但是它自己将url更改为我提到的以外的其他url并给出了404错误

我的弹簧控制器如下：

 @Controller
@SessionAttributes({ "dataObject", "userId" , "screen" , "scrUpdate" })
public class ScreenDesignerController extends BaseController {
/**
 * Injected screen designer service class.
 */
@Autowired
private ScreenDesignerService screendiService;

@RequestMapping(value = "EditScreen", method = RequestMethod.POST)
public String  editScreen(Model model , @RequestBody String tempdata , RedirectAttributes ra) throws Exception {
    ScreenUpdate scrUpdate;
    try {
        logger.info("in editscreen post method: ");
        scrUpdate = screendiService.formatScreen(tempdata);
        logger.info("screenID: " + scrUpdate.getScreenId());
        ra.addFlashAttribute("scrUpdate", scrUpdate);
    } catch (Exception e) {
        logger.error("in editscreen post method: " + e);
    }

    return "redirect:/UpdateScreen";


}

/**
 * Controller get method for Screen Update.
 * @param model Model.
 * @param scrUpdate to create layout for updating screen.
 * @return the template name
 * @throws Exception if anything goes wrong
 */

@RequestMapping(value = "UpdateScreen", method = RequestMethod.GET)
public final String updateScreen(Model model, @ModelAttribute("scrUpdate") ScreenUpdate scrUpdate) throws Exception {
    try {
        model.addAttribute("screen", scrUpdate);
        logger.info("Update Screen GET");
    } catch (Exception e) {
        logger.error("inside GET Catch UpdateScreen: " + e);
    }
    return "ScreenDesigner/UpdateScreen";
}

Answer 1

查看代码看起来你要重定向的GET方法是期望（ScreenUpdate）对象作为模型属性请更改get方法如下

@RequestMapping(value = "UpdateScreen", method = RequestMethod.GET)
public final String updateScreen(Model model) throws Exception {
model.addAttribute("screen", scrUpdate);
return "ScreenDesigner/UpdateScreen";
}

如果你想将ScreenUpdate对象发送到这个GET方法，你可以用post方法（editScreen方法）在session中添加它，然后在你的get方法中获取它。

在Spring MVC控制器中重定向到另一个视图

1 个答案: