Java 请求映射无法正常工作

在我的Spring控制器中，我创建了3种方法。方法1和方法2工作正常，但方法3给了我一个问题

问题:

org.springframework.web.servlet.PageNotFound noHandlerFound
WARNING: No mapping found for HTTP request with URI [/SpringMVCEample1/students/edit/2] in DispatcherServlet with name 'SpringServlet'

方法1-效果完美

@RequestMapping(value="/get", method = RequestMethod.GET)
public String getAllStudents(Model model){
    System.out.println("Fetching All Students");
    model.addAttribute("studentList", list);
    return "student";
}

@RequestMapping("/{id}")
public String getStudentById(@PathVariable("id") int id, Model model){
    System.out.println("Fetching Student with Id " + id);
    model.addAttribute("currentStudent",list.get(id));
    return "student";
}

@RequestMapping(value="/edit/${studentId}")
    public String editStudent(@PathVariable("studentId") int studentId, Model model){
        System.out.println("Edit Student with Index " + studentId);
        model.addAttribute("studentId",studentId);
        model.addAttribute("studentName",list.get(studentId));
        return "redirect:get";
    }

方法2-效果完美

@RequestMapping(value="/get", method = RequestMethod.GET)
public String getAllStudents(Model model){
    System.out.println("Fetching All Students");
    model.addAttribute("studentList", list);
    return "student";
}

@RequestMapping("/{id}")
public String getStudentById(@PathVariable("id") int id, Model model){
    System.out.println("Fetching Student with Id " + id);
    model.addAttribute("currentStudent",list.get(id));
    return "student";
}

@RequestMapping(value="/edit/${studentId}")
    public String editStudent(@PathVariable("studentId") int studentId, Model model){
        System.out.println("Edit Student with Index " + studentId);
        model.addAttribute("studentId",studentId);
        model.addAttribute("studentName",list.get(studentId));
        return "redirect:get";
    }

方法3-给出错误

@RequestMapping(value="/get", method = RequestMethod.GET)
public String getAllStudents(Model model){
    System.out.println("Fetching All Students");
    model.addAttribute("studentList", list);
    return "student";
}

@RequestMapping("/{id}")
public String getStudentById(@PathVariable("id") int id, Model model){
    System.out.println("Fetching Student with Id " + id);
    model.addAttribute("currentStudent",list.get(id));
    return "student";
}

@RequestMapping(value="/edit/${studentId}")
    public String editStudent(@PathVariable("studentId") int studentId, Model model){
        System.out.println("Edit Student with Index " + studentId);
        model.addAttribute("studentId",studentId);
        model.addAttribute("studentName",list.get(studentId));
        return "redirect:get";
    }

---

您必须从

@RequestMapping（value=“/edit/${studentId}”）中删除
$

例如，它必须是：

@RequestMapping(value="/edit/{studentId}")

---

您必须从

@RequestMapping（value=“/edit/${studentId}”）中删除
$

例如，它必须是：

@RequestMapping(value="/edit/{studentId}")

---

映射值应为{studentId}，而不是${studentId}

@RequestMapping(value="/edit/{studentId}")
public String editStudent(@PathVariable("studentId") int studentId, Model model){
    System.out.println("Edit Student with Index " + studentId);
    model.addAttribute("studentId",studentId);
    model.addAttribute("studentName",list.get(studentId));
    return "redirect:get";
}

---

映射值应为{studentId}，而不是${studentId}

@RequestMapping(value="/edit/{studentId}")
public String editStudent(@PathVariable("studentId") int studentId, Model model){
    System.out.println("Edit Student with Index " + studentId);
    model.addAttribute("studentId",studentId);
    model.addAttribute("studentName",list.get(studentId));
    return "redirect:get";
}

---

/edit/${studentId}

您必须删除

$

@BogdanK:谢谢您指出这一点。我想我疯了。：-）如果您使用的是SpringMVC4.3.x，那么您应该使用@RequestMapping（value=“/edit/${studentId}”）而不是@RequestMapping（value=“/edit/${studentId}”），而不是@RequestMapping（value=“/get”，method=RequestMethod.get）。只是一个旁注，因为它已经回答了。

/edit/${studentId}

您必须删除

$

@BogdanK:谢谢您指出这一点。我想我疯了。：-）如果您使用的是SpringMVC4.3.x，那么您应该使用@RequestMapping（value=“/edit/${studentId}”）而不是@RequestMapping（value=“/edit/${studentId}”），而不是@RequestMapping（value=“/get”，method=RequestMethod.get）。只是一个旁注，因为它已经回答了。