原始服务器未找到目标资源的当前表示，或不愿意透露存在错误

Question

Web.xml

图书管理

<servlet>
    <servlet-name>BooksManagement</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
</servlet>


<servlet-mapping>
    <servlet-name>BooksManagement</servlet-name>
    <url-pattern>/</url-pattern>
</servlet-mapping>

<welcome-file-list>
    <welcome-file>/student.jsp</welcome-file>
</welcome-file-list>

我的控制器是 AddStudentController

@Controller
public class AddStudentController {

    @RequestMapping(value = "/student", method = RequestMethod.GET)
    public ModelAndView student() {
    return new ModelAndView("student", "command", new Students());
    }

    @RequestMapping(value = "/addStudent", method = RequestMethod.POST)
    public String addStudent(@ModelAttribute("SpringWeb") Students student,ModelMap model) {
    model.addAttribute("firstName", student.getFirstName());
    model.addAttribute("lastName", student.getLastName());
    model.addAttribute("id", student.getId());

    return "result";
    }
}

Folder Structure

原始服务器找不到目标资源的当前表示，或者不愿意透露存在的错误

Answer 1

起初，我试图打 student.jsp 而没有打 index.jsp 。在index.jsp中输入<a href="student">Click here...</a>之后。

还添加了

<welcome-file-list> <welcome-file>/index.jsp</welcome-file> </welcome-file-list>

在web.xml中

现在解决了

由于Controller正在搜索 /学生，因此没有提及

@Controller
public class AddStudentController {
    @RequestMapping(value = "/student", method = RequestMethod.GET)
    public ModelAndView student() {
    return new ModelAndView("student", "command", new Students());
    }