Question

假设我有这个控制器：

import org.java.wsg.service.ClientsService;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.support.PagedListHolder;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;

import javax.servlet.http.HttpServletRequest;

@Controller
public class ClientsController {

    @Autowired
    ClientsService clientsService;

    @RequestMapping(value = "/clients.htm")
    public String clientsPage(HttpServletRequest request, Model model) {

        PagedListHolder pagedList = new PagedListHolder(clientsService.getClients());
        pagedList.setPageSize(50);
        request.getSession().setAttribute("clientsList", pagedList);

        model.addAttribute("clients", pagedList.getPageList());

        return "clients";
    }

    @RequestMapping(value = "/clientsNavigate.htm", method = RequestMethod.POST)
    public String clientsNavigateToPage(HttpServletRequest request, Model model,
                                        @RequestParam String action) {

        PagedListHolder pagedList = (PagedListHolder) request.getSession().getAttribute("clientsList");

        if (action.equals("next")) {
            pagedList.nextPage();

        } else if (action.equals("previous")) {
            pagedList.previousPage();
        }

        model.addAttribute("clients", pagedList.getPageList());

        return "clients";
    }

    @RequestMapping(value = "/clients/{id}.htm", method = RequestMethod.GET)
    public String clientById(Model model, @PathVariable Integer id, HttpServletRequest request) {

        PagedListHolder pagedList = new PagedListHolder(clientsService.getClientById(id));
        pagedList.setPageSize(50);
        request.getSession().setAttribute("clientsList", pagedList);

        model.addAttribute("clients", pagedList.getPageList());

        return "clients";
    }
}

修改这是一个clients.jsp页面：

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
         pageEncoding="ISO-8859-1" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
    <title>Clients</title>
    <link rel="stylesheet" type="text/css"
          href="<c:url value='/resources/css/bootstrap.css'/>"/>
    <script type="text/javascript" src="<c:url value="/resources/js/bootstrap.js" />">

    </script>

    <script type="text/javascript"
            src="<c:url value="/resources/js/bootstrap.min.js" />">

    </script>

</head>
<body>
<div class="container-fluid">
    <div class="row-fluid">

        <div class="span10 offset1">
            <center>
                <h2>Clients</h2>
            </center>

            <table class="table table-hover">
                <tr>
                    <th>
                        <center>Id</center>
                    </th>
                    <th>
                        <center>Ip</center>
                    </th>
                    <th>
                        <center>Connections</center>
                    </th>
                    <th>
                        <center>GUID</center>
                    </th>
                    <th>
                        <center>Name</center>
                    </th>
                    <th>
                        <center>Group</center>
                    </th>
                    <th>
                        <center>Time added</center>
                    </th>
                    <th>
                        <center>Last seen</center>
                    </th>
                </tr>
                <c:forEach items="${clients}" var="c">
                    <tr>
                        <td><c:out value="${c.id}"/></td>
                        <td><c:out value="${c.ip}"/></td>
                        <td><c:out value="${c.connections}"/></td>
                        <td><c:out value="${c.guid}"/></td>
                        <td><a href="${pageContext.request.contextPath}/clients/${c.id}.htm"><c:out
                                value="${c.name}"/></a>
                        </td>
                        <td><c:out value="${c.group}"/></td>
                        <td><c:out value="${c.timeAdd}"/></td>
                        <td><c:out value="${c.timeEdit}"/></td>

                    </tr>
                </c:forEach>
            </table>
            <form:form method="post" action="clientsNavigate.htm">
                <input type="submit" name="action" value="previous" class="btn btn-info" />
                <input type="submit" name="action" value="next" class="btn btn-info" />

            </form:form>
        </div>
    </div>
</div>
</body>
</html>

正如您所看到的，第一个方法（clientsPage）获取了Client个对象的列表，并将它们作为属性传递给clients.jsp页面。第二种方法（clientsNavigateToPage）用于处理表单请求（带有两个按钮（Next和Previous）的简单表单）clients.jsp页面。第三种方法用于获取具有一些id的多个客户端。但我遇到的问题是在我处理/clients/{id}.htm请求后，我无法处理/clientsNavigate.htm请求。

它说： HTTP Status 405 - Request method 'POST' not supported

如何处理这个问题？

Answer 1

因为其他所有东西看起来都不像是一个bug，我认为唯一剩下的问题就是表单url。

对于您的链接，您使用以下模式：

<a href="${pageContext.request.contextPath}/clients/${c.id}.htm">...</a>

但是对于页面导航，您使用此相对URL

<form:form method="post"
           action="clientsNavigate.htm"

所以我认为值得尝试：

<form:form method="post"
           action="${pageContext.request.contextPath}/clientsNavigate.htm" ...

Btw：我建议使用c:url（没有contextPath但以斜杠开头）而不是

<c:url var="navFormUrl" value= "/clientsNavigate.htm" />
<form:form method="post" action="${navFormUrl}" ...

Spring MVC - 分页和请求方法

1 个答案: