你应该做什么

Question

<form class="form-inline"  action="./test.php?id=1">
                <li class="nav-item">
                    <div class="form-group">
                        <select class="custom-select custom-select-lg mb-3"  id="objectType">
                          <option selected>Object Type</option>
                          <option value="Toy">Toy</option>
                          <option value="Furniture">Furniture</option>
                          <option value="Gift">Gift</option>
                          <option value="Household">Household</option>
                          <option value="Instrument">Instrument</option>
                        </select>
                    </div>
                </li>


                <li class="nav-item">
                    <div class="form-group">
                        <select class="custom-select custom-select-lg mb-3" id="materialType">
                          <option selected>Material Type</option>
                          <option value="Mud">Mud</option>
                          <option value="Cloth">Cloth</option>
                          <option value="Thread">Thread</option>
                          <option value="Jute">Jute</option>
                          <option value="Cotton">Cotton</option>
                          <option value="Can">Can</option>
                          <option value="Bamboo">Bamboo</option>
                        </select>
                    </div>
                </li>


                <li class="nav-item">
                    <div class="form-group">
                        <div class="input-group">
                            <input class="form-control" type="search" placeholder="Search">
                            <span class="input-group-btn">
                                <button class="btn btn-outline-secondary" type="submit" id="searchSubmit"><i class="fa fa-search"></i>
                                </button>
                            </span>
                        </div>
                    </div>
                </li>
            </form>

我有这个表格。当调用提交按钮test.php时，将使用请求ID值1调用页面。在test.php表单字段中，将使用值进行查询。

部分的test.php代码段

$id=$_REQUEST['id'];
if ($id==1)
 {
    $result = search($_POST['imageName'],$_POST['objectType'],$_POST['materialType']);
    echo $_POST['imageName'];
}
else
{
    $result = home_page_image();
}

填写完字段后点击提交按钮时，浏览器地址栏中没有显示test.php?id=1，确认我没有调用该页面。

修改1

我添加了方法（POST）作为他答案中提到的@ PL200，但在search()中test.php函数后没有回音。我也发出警报但没有显示。 alert是search函数之前的工作，post值既不是search函数之前也不是#include <cstdio> #include <cstring> #include <iomanip> #include <iostream> #include <sstream> #include <stdexcept> #include <string> #include <zlib.h> #pragma comment(lib, "zdll.lib") static char LookupDigits[] = { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,62,0,0,0,63,52,53,54,55,56,57,58,59,60,61, 0,0,0,99,0,0,0,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19, 20,21,22,23,24,25,0,0,0,0,0,0,26,27,28,29,30,31,32,33,34,35,36, 37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 }; int FromBase64Simple(const unsigned char* pSrc, int nLenSrc, unsigned char* pDst, int nLenDst) { int nLenOut = 0; for (int j = 0; j<nLenSrc; j += 4) { if (nLenOut > nLenDst) { return(0); // error, buffer too small } unsigned char s1 = LookupDigits[*pSrc++]; unsigned char s2 = LookupDigits[*pSrc++]; unsigned char s3 = LookupDigits[*pSrc++]; unsigned char s4 = LookupDigits[*pSrc++]; unsigned char d1 = ((s1 & 0x3f) << 2) | ((s2 & 0x30) >> 4); unsigned char d2 = ((s2 & 0x0f) << 4) | ((s3 & 0x3c) >> 2); unsigned char d3 = ((s3 & 0x03) << 6) | ((s4 & 0x3f) >> 0); *pDst++ = d1; nLenOut++; if (s3 == 99) break; // end padding found *pDst++ = d2; nLenOut++; if (s4 == 99) break; // end padding found *pDst++ = d3; nLenOut++; } return(nLenOut); } std::string decompress_string(const std::string& str) { z_stream zs; // z_stream is zlib's control structure memset(&zs, 0, sizeof(zs)); inflateInit(&zs); zs.next_in = (Bytef*)str.data(); zs.avail_in = str.size(); int ret; char outbuffer[32768]; std::string outstring; do { zs.next_out = reinterpret_cast<Bytef*>(outbuffer); zs.avail_out = sizeof(outbuffer); ret = inflate(&zs, 0); if (outstring.size() < zs.total_out) { outstring.append(outbuffer, zs.total_out - outstring.size()); } } while (ret == Z_OK); inflateEnd(&zs); return outstring; } int main() { std::string inputData = "eAFjYoAAZiDFCMQgGgQAAJwACg=="; //19 is hardcoded since I know its size prior to this call std::string res(19, '\0'); FromBase64Simple((unsigned char*)inputData.c_str(), inputData.size(), (unsigned char*)res.data(), res.size()); std::string d = decompress_string(res); for (int c : d) { printf("%02x", c); } printf("\n"); getchar(); return 0; }函数之后的回显。这表明表单值未在test.php中发布。

编辑2
实际上，当我点击提交按钮时，我会调用同一页面。

Answer 1

您的表单中没有包含任何方法。将html的第一行更改为：

<form class="form-inline"  method="POST" action="./test.php?id=1">

这应该可以解决您遇到的问题。

Answer 2

我理解你要做的是什么，但请注意，有些浏览器会忽略使用form action属性传递的查询参数。因此，无论何时提交表单，在某些浏览器上都可能未定义$_GET['id']，只是行为不一致。另外，您没有为表单指定任何方法属性。

你应该做什么

使用隐藏的输入表单元素来传递您的值，这是推荐的方法。

<form class="form-inline"  action="./test.php" method="post">
    <!-- put values to pass here -->
    <input type="hidden" value="1" name="id" />

    ...
</form>

此外，您还可以将隐藏的输入字段放在表单元素之外，并使用表单ID 通过输入字段表单属性来引用它。见下面的例子：

<form id="form-id" class="form-inline"  action="./test.php" method="post">
    <!-- put values to pass here -->
    ...
</form>

<!-- Bind this hidden input field to your form -->
<input type="hidden" value="1" name="id" form="form-id" />

请注意，您可以在单个表单中使用的隐藏输入字段数量没有限制，但是要简单。

Answer 3

表单输入没有name。

<form class="form-inline"  action="./test.php?id=1" method="POST">
                <li class="nav-item">
                    <div class="form-group">
                        <select class="custom-select custom-select-lg mb-3"  name="objectType">
                          <option selected>Object Type</option>
                          <option value="Toy">Toy</option>
                          <option value="Furniture">Furniture</option>
                          <option value="Gift">Gift</option>
                          <option value="Household">Household</option>
                          <option value="Instrument">Instrument</option>
                        </select>
                    </div>
                </li>


                <li class="nav-item">
                    <div class="form-group">
                        <select class="custom-select custom-select-lg mb-3" name="materialType">
                          <option selected>Material Type</option>
                          <option value="Mud">Mud</option>
                          <option value="Cloth">Cloth</option>
                          <option value="Thread">Thread</option>
                          <option value="Jute">Jute</option>
                          <option value="Cotton">Cotton</option>
                          <option value="Can">Can</option>
                          <option value="Bamboo">Bamboo</option>
                        </select>
                    </div>
                </li>


                <li class="nav-item">
                    <div class="form-group">
                        <div class="input-group">
                            <input class="form-control" type="search" placeholder="Search" name="imageName">
                            <span class="input-group-btn">
                                <button class="btn btn-outline-secondary" type="submit" id="searchSubmit"><i class="fa fa-search"></i>
                                </button>
                            </span>
                        </div>
                    </div>
                </li>
            </form>

search()方法后未显示警告消息，因为在search()方法中出现问题。我调试并纠正search()方法中的错误。现在一切正常。

单击“提交”按钮后，不会调用表单操作页面

3 个答案:

你应该做什么