我尝试做一个jsp表格，该表格在servlet验证后会吸引Angular.js。
我有3个主要文件-
default.jsp
<!DOCTYPE html>
<html>
<head>
<!-- CSS -->
<link rel="stylesheet" href="css/bootstrap.min.css" />
<!-- JS -->
<script src="js/angular.js"></script>
<script src="js/app.js"></script>
</head>
<body ng-app="validationApp" ng-controller="mainController">
<div class="container">
<!-- =================================================================== -->
<!-- FORM ============================================================== -->
<!-- =================================================================== -->
<!-- pass in the variable if our form is valid or invalid -->
<form action="AfterFormServlet" method="POST" name="userForm"
ng-submit="submitForm(userForm.$valid)" novalidate>
<!-- FIRST NAME -->
<div class="form-group"
ng-class="{ 'has-error' : userForm.name.$invalid && !userForm.name.$pristine }">
<label>First name</label> <input type="text" name="name"
class="form-control" ng-model="user.name"
ng-pattern="/^[a-z ,.'-]+$/i" required>
<p ng-show="userForm.name.$invalid && !userForm.name.$pristine"
class="help-block">Enter a valid last first name.</p>
</div>
<button type="submit" class="btn btn-primary">Submit</button>
</form>
</div>
</body>
</html>
AfterFormServlet.java
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* Servlet implementation class AfterFormServlet
*/
@WebServlet("/AfterFormServlet")
public class AfterFormServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
public AfterFormServlet() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
System.out.println("Hi");
}
}
app.js
// create angular app
var validationApp = angular.module('validationApp', []);
// create angular controller
validationApp.controller('mainController', function($scope) {
// function to submit the form after all validation has occurred
$scope.submitForm = function(isValid) {
// check to make sure the form is completely valid
if (isValid) {
alert('Thanks, your order was Sent');
}
else {
alert('Invalid form');
}
};
});
运行后，进入表单，填写必填字段，单击submit，即使验证失败，它也进入servlet。
如何使其工作？
更新：
跟随@ug_建议-
<form action="" active="AfterFormServlet" method="POST" name="userForm"
ng-submit="submitForm(userForm.$valid);" novalidate>
进行验证，但没有进入servlet。
和-
<form action="AfterFormServlet" method="POST" name="userForm"
ng-submit="submitForm(userForm.$valid);" novalidate>
由于验证生效，即使验证失败，它也会进入servlet。
您的表单没有action属性，这意味着当使用ng-submit指令时，它将防止导致表单不提交的默认行为。有关此信息，请点击https://docs.angularjs.org/api/ng/directive/ngSubmit。
修复：
将action=""属性添加到您的表单标签。
<form active="AfterFormServlet" action="" method="POST" name="userForm"
ng-submit="submitForm(userForm.$valid)" novalidate>
另外我注意到您有一个名为active的属性，我不确定这是否只是一个错误的类型并且应该是action或是否与您进行的其他操作有关，即不是帖子的一部分。
编辑：看了一些之后，我认为您应该对代码进行一点重做。似乎最好不要使用“提交”按钮类型，而只是将“提交”行为发送给您在其中验证表单的函数。所以看起来像这样：
$scope.submitForm = function(isValid) {
// check to make sure the form is completely valid
if (isValid) {
alert('Thanks, your order was Sent');
$scope.userForm.submit();
}
else {
alert('Invalid form');
}
};
和您的html：
<!-- CHANGE HERE -->
<form action="AfterFormServlet" method="POST" name="userForm" novalidate>
<!-- FIRST NAME -->
<div class="form-group" ng-class="{ 'has-error' : userForm.name.$invalid && userForm.name.$pristine }">
<label>First name</label>
<input type="text" name="name" class="form-control" ng-model="user.name" ng-pattern="/^[a-z ,.'-]+$/i" required>
<p ng-show="userForm.name.$invalid && !userForm.name.$pristine" class="help-block">Enter a valid last first name.</p>
</div>
<!-- CHANGE HERE -->
<button ng-click="submitForm(userForm.$valid)" class="btn btn-primary">Submit</button>
</form>
或者，您也可以使用$http提供程序来通过AJAX提交表单，它不会刷新页面。