spring mvc没有绑定模型来查看

Question

我正在探索 spring mvc，但在绑定模型以查看时遇到问题。 我的控制器：

@Controller
@RequestMapping(value = "/advertiser")

public class AdvertiserController {
    @Autowired
    private AdvertiserService advertiserService;
    @RequestMapping(value="/edit/{id}", method = RequestMethod.GET)
    public ModelAndView edit(@PathVariable long id){
            Advertiser adv=advertiserService.get(id);
            return new ModelAndView("advertiser/edit","command",adv);
    }
}

我在 /WEB-INF/advertiser 目录中也有一个 edit.jsp 文件。

我的视图解析器：

<bean id="viewResolver"
      class="org.springframework.web.servlet.view.InternalResourceViewResolver"
      p:prefix="/WEB-INF/"
      p:suffix=".jsp" />

但是，我在转到 http://localhost:8080/springmvcdemo/advertiser/edit/1 时遇到 404 错误

错误描述：/springmvcdemo/WEB-INF/advertiser/edit/1.jsp

看起来 spring 正在尝试找到一个 1.jsp 文件来服务请求，而不是像我想要的那样使用 edit.jsp 服务。

更新：

我只是向我的控制器添加了 1 个功能，但它也不起作用：

@RequestMapping(value="/add2", method = RequestMethod.GET)
public ModelAndView add2(ModelAndView mav){


        mav.addObject("command", new Advertiser());
        mav.setViewName("advertiser/add");

        return mav;
}

问题仍然存在，描述中的 404 错误：

/springmvcdemo/WEB-INF/advertiser/add2.jsp

我已经将观点指向“广告商/添加”，但 spring 仍然试图找到 add2.jsp 而不是 add.jsp。这让我觉得我在 viewResolver 配置中失败了，但仍然不知道它是什么。

Answer 1

将路径改为advertiser/edit/1如下..

@RequestMapping(value="/edit/{id}", method = RequestMethod.GET)
public ModelAndView edit(@PathVariable long id){
        Advertiser adv=advertiserService.get(id);
        return new ModelAndView("advertiser/edit","command",adv);
}

Answer 2

你需要检查点。

servelt-context.xml

<!-- Resolves views selected for rendering by @Controllers to .jsp resources 
in the /WEB-INF/views directory -->
<beans:bean id="jspViewResolver"
    class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <beans:property name="viewClass"
        value="org.springframework.web.servlet.view.JstlView" />
    <beans:property name="prefix" value="/WEB-INF/views/" />
    <beans:property name="suffix" value=".jsp" />
</beans:bean>

控制器

@Controller
@RequestMapping(value = "/advertiser")
public class AdvertiserController {

    @Autowired
    private AdvertiserService advertiserService;

    @RequestMapping(value="/edit/{id}", method = RequestMethod.GET)
    public ModelAndView edit(@PathVariable long id, ModelAndView mav){
         Advertiser adv = advertiserService.getAdvertiserById(id);

         mav.addObject("command", adv);
         mav.setViewName("folder/viewName");

         return mav;
    }
}

示例目录：webapp/WEB-INF/views/advertiser/edit.jsp

示例：mav.setViewName(advertiser/edit);使用 viewName。

---

我想改变你的代码。如果你的目录 WEB-INF/advertiser/add2.jsp

您的更新：

mav.setViewName("advertiser/**add2**");

示例代码

您在目录中有文件（WEB-INF/advertiser/add 和 add2.jsp）。

显示 add.jsp

    @RequestMapping(value="/one", method = RequestMethod.GET)
    public ModelAndView edit(ModelAndView mav){

         mav.setViewName("advertiser/add");

         return mav;
    }

显示 add2.jsp

    @RequestMapping(value="/two", method = RequestMethod.GET)
    public ModelAndView edit(ModelAndView mav){

         mav.setViewName("advertiser/add2");

         return mav;
    }