Question

我必须在jsp页面的某些复选框内切换到选定的值，但在选择之后和按下＆＃34;发送＆＃34;按钮，我使用以下描述生成此错误：HTTP状态400：客户端发送的请求在语法上不正确。

我哪里错了？

TaskController.java

@RequestMapping(value="/newTask", method = RequestMethod.GET)
    public String task(@ModelAttribute Task task, Model model) {
        Authentication auth = SecurityContextHolder.getContext().getAuthentication();
        String s = auth.getName();
        Student student = studentFacade.retrieveUser(s);
        List<Job> jobs = new ArrayList<>();
        if(!(auth instanceof AnonymousAuthenticationToken)) {
            jobs = facadeJob.retriveAlljobs();
            model.addAttribute("job", getMathRandomList(jobs));
            model.addAttribute("image", imageFacade.retriveAllImages());
            List<Image> img = imageFacade.retriveAllImages();
            task.setImages(img);
            task.setStudent(student);
            taskFacade.addTask(task);
            List<Long> images = new ArrayList<>();
            for(Image i : img)
                images.add(i.getId());
            model.addAttribute("images", images);


        }
        return "users/newTask";
    }

    @RequestMapping(value="/taskRecap", method = RequestMethod.POST)
    public String taskRecap(@ModelAttribute Task task, Model model,BindingResult result) {
        model.addAttribute("task", task);
        return "users/taskRecap";
    }

newTask.jsp

<form:form method="post" action="taskRecap" modelAttribute="task" name="form">
    <form:checkboxes path="images" items="${images}"  value="yes" />
        <td><input type="submit" value="Send" /></td>
 </form:form>

taskRecap.jsp

Immages

<c:forEach var="image" items="${task.images}">
        <c:out value="${image.id}" />
        </c:forEach>

Task.java

@Entity
public class Task {

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private Long id;
    @ManyToOne
    private Student student;
    @ManyToMany
    List<Image> images;


    public Student getStudent() {
        return student;
    }

    public void setStudent(Student student) {
        this.student = student;
    }

    public Task() {

    }

    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }

    public Task(Long id, Student student, List<Image> images) {
        super();
        this.id = id;
        this.student = student;
        this.images = images;
    }

    public List<Image> getImages() {
        return images;
    }

    public void setImages(List<Image> images) {
        this.images = images;
    }
}

Answer 1

使用查询参数

Function Merger(a(), b()) 'a has all lines, b doesn't, **first column is SORTED**
Dim i1&, i2&, j&, output
ReDim sortie(1 To UBound(a), 1 To UBound(a, 2) + UBound(b, 2) - 1)
i1 = 1: i2 = 1
Do While i2 < UBound(b) And i1 < UBound(a)
    If a(i1, 1) = b(i2, 1) Then
        For j = 2 To UBound(b, 2)
            a(i1, UBound(a) + j - 1) = b(i2, j)
        Next
        i1 = i1 + 1
        i2 = i2 + 1
    ElseIf a(i1, 1) < b(i2, 1) Then
        i1 = i1 + 1
    Else
        Stop 'either not sorted or not present in a
    End If
Loop
Merger = output
End Function

使用隐藏变量。

<a href="edit.jsp?Name=${user.name}" />

如果您使用前两种方法中的任何一种，您可以像这样访问您的值：

<form method="post" action="update.jsp">  

   <input type="hidden" name="Name" value="${user.id}">

您可以发送使用会话对象。

String userid = session.getParameter("Name");

只要您的会话仍处于活动状态，现在可以从任何jsp获取这些值。

如果你使用第三个选项，你可以像这样访问你的值：

session.setAttribute("Name", UserName);

如何将复选框中的选定参数从一个jsp页面传递到另一个jsp页面？

Immages

1 个答案: