提问者:小点点

Spring MVC:路径变量{studentId}未正确显示


这让我很困惑。而不是使用一个路径变量值的正确URLhttp://somedomain.com:8080/someWebApp/essays/main/student/25/activity/add“(其中25是路径变量{code>{studentId}}的值)我在我的URL中得到这个值:”http://somedomain.com:8080/someWebApp/essays/main/student/{studentId}/activity/add“

这是我显示一些testPage的控制器方法,它可以正常工作:

@RequestMapping(value="/{studentId}/activity/add", method = RequestMethod.GET)
    public String getForm(@PathVariable Integer studentId, Model model) {

        StudentActivityDTO studentActivityDTO = new StudentActivityDTO();
        Student student = studentService.get(studentId);
        studentActivityDTO.setStudent(student);
        studentActivityDTO.getActivity().setEssayFlag("Essay");
        model.addAttribute("studentActivityDTO", studentActivityDTO);
        model.addAttribute("courseList", courseService.getAll());
        model.addAttribute("teacherList", teacherService.getAll());

        return "testPage";
    }

这是发生问题的后控制器方法:

@RequestMapping(value="/{studentId}/activity/add", method = RequestMethod.POST)
    public String postForm(@ModelAttribute("studentActivityDTO") StudentActivityDTO studentActivityDTO,
                            @PathVariable Integer studentId,
                            Model model) {

        logger.debug("Received request to add new activity to student");

        Activity activity = studentActivityDTO.getActivity();
        activityService.add(studentId, activity);

        return "success/addActivitySuccess";
    }

在第一种情况下,PathVariable可以正常工作,在第二种情况下,它会出现以下错误:

Failed to convert value of type 'java.lang.String' to required type 'java.lang.Integer'; nested exception is java.lang.NumberFormatException: For input string: "{studentId}"

我得到的是字符串“{学生ID}”,而不是URL中的{学生ID}的某些值。

有人能告诉我为什么吗?

更新:这是jsp页面的重要部分(这是一个相当大的页面):

<c:url var="studentUrl" value="/essays/main/student/{studentId}/activity/add" />
<form:form modelAttribute="studentActivityDTO" method="POST" action="${studentUrl}">
...
<input type="submit" value="Submit" />
</form:form>

共1个答案

匿名用户

也许你想

<c:url var="studentUrl" value="/essays/main/student/${studentActivityDTO.student.id}/activity/add" />