Question

基本上，我有一个HTML搜索表单，允许我在数据库中搜索。提交表单时会调用JavaScript函数，但我没有重定向到所需的页面。 “请求方法'POST'不受支持”是收到的错误消息。

我的代码：

<form th:object="${devices}" method="POST" onsubmit="return fireAction()">
    <input type="text" id="search" name="search" />
    <input type="submit" value="Search"/>
</form>

function fireAction() {
    var searchInput = document.getElementById('search').value;
    var searchFilter = document.getElementById('deviceAttributes').value;
    var checkbox = document.getElementById('lastEntry').checked;

    alert(searchInput + " " + searchFilter + " " + checkbox);
    if (searchInput == "" || searchInput == null) {
        alert("Search field cannot be null.");
        return false;

    } else if (checkbox) {
        window.location.href = '/current/' + searchInput
                + '/filter/' + searchFilter;

    } else {
        window.location.href = '/showForm/' + searchInput
                + '/filter/' + searchFilter;
    }
}

@RequestMapping(value = "/showForm/{keyword}/filter/{searchFilter}", method = RequestMethod.POST)
public String showForm(@PathVariable("keyword") String keyword,
@PathVariable("searchFilter") String searchFilter, Model model) {
    Devices devices = new Devices();
    devices.setSearch(keyword);
    devices.setSearchFilter(searchFilter);
    model.addAttribute(
    "addDevices",
    device.findByDevicesName(devices.getSearch(),
            devices.getSearchFilter()));
    return "showForm";
}


@RequestMapping(value = "/current/{keyword}/filter/{searchFilter}", method = RequestMethod.POST)
public String currentDevices(@PathVariable("keyword") String keyword,
@PathVariable("searchFilter") String searchFilter, ModelMap model) {
    model.addAttribute("devices", new Devices());
    Devices devices = new Devices();
    devices.setSearch(keyword);
    devices.setSearchFilter(searchFilter);
    List<Devices> newList = device.allDevices();
    ListIterator<Devices> iterator = newList.listIterator();
    List<Devices> resultList = new ArrayList<Devices>();
    while (iterator.hasNext()) {
        Devices device = iterator.next();
        if (searchLastEntry(device, keyword, searchFilter)) {
         resultList.add(device);
        }
    }
    model.addAttribute("iterator2", resultList);
    return "current";
}

Answer 1

执行window.location.href后，你的javascript中没有返回false - 所以我怀疑在javascript执行对window.location.href的异步GET请求之后，函数结束并且控制权被传递回到表单，它只执行正常的POST操作，但是你还没有定义一个动作URL（这解释了GET然后你说你在网络选项卡中看过的POST请求）。

除此之外，正如评论中所提到的，您可能不应该在搜索表单中使用POST - 请查看http://www.w3schools.com/tags/ref_httpmethods.asp

请求方法＆＃39; POST＆＃39;不支持Spring Boot

1 个答案: