0
我有一個servlet將插入表單輸入字段到我的數據庫和它的作品當我設置AJAX調用servlet中不工作
<form action="CreateUserServlet">
但我想嘗試一些表單驗證的東西和AJAX的servlet調用返回成功但數據不會添加到我的數據庫中。
的servlet:
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
String username = request.getParameter("usernameField");
String password = request.getParameter("passwordField");
if (MySqlCon.createUser(username, password)) {
try (PrintWriter out = response.getWriter()) {
out.println("<script type=\"text/javascript\">");
out.println("alert('Account Successfully Created!');");
out.println("</script>");
}
} else {
try (PrintWriter out = response.getWriter()) {
out.println("<script type=\"text/javascript\">");
out.println("alert('Error in Creating Account!');");
out.println("</script>");
}
}
}
HTML表單
<div class="collapse" id="createAcc">
<div class="create-wrapper">
<form method="post" id="create-ajax">
<h3> Enter your details </h3>
<div class="row">
<div class="col-md-12">
<input type="text" name="usernameField" placeholder="choose username" id="createUsername"/>
<p class="hideMsg" id="createUserError">bad username, try again</p>
</div>
</div>
<div class="row">
<div class="col-md-12">
<input type="text" name="passwordField" placeholder="choose password" id="createPassword"/>
<p class="hideMsg" id="createPasswordError">bad password, try again</p>
</div>
</div>
<div class="row buttonRow">
<div class="col-md-12">
<input id="submitCreateAcc" type="submit" value="Create"/>
<p class="hideMsg" id="successMsg">Account created!</p>
</div>
</div>
</form>
</div>
</div>
的JavaScript:
$(document).ready(function() {
var createForm = $('#create-ajax');
$(createForm).submit(function (event) {
event.preventDefault();
var username = $('#createUsername').val();
var password = $('#createPassword').val();
if (username.length < 6) {
$('#createUserError').removeClass('hideMsg').addClass('showMsg');
} else {
$('#createUserError').removeClass('showMsg').addClass('hideMsg');
}
if (password.length < 8) {
$('#createPasswordError').removeClass('hideMsg').addClass('showMsg');
} else {
$('#createPasswordError').removeClass('showMsg').addClass('hideMsg');
}
if (username.length >= 6 && password.length >= 8) {
$.ajax({
url: 'CreateUserServlet',
method: 'POST',
success: function() {
$('#successMsg').removeClass('hideMsg').addClass('showMsg');
}
});
}
})
});
的sucessMsg顯示,但該數據沒有得到插入。任何幫助表示讚賞,謝謝
成功函數只是修改了successMsg元素的類,你沒有添加任何數據 –
不要發佈任何數據....它不會奇蹟般地獲取表單數據,你需要提供它。 – epascarello
數據應該由servlet添加而不提供任何數據,所以我不需要給它任何東西。我只需要調用它。我認爲成功函數意味着調用了servlet – ricefieldboy