Html代码
这里的代码是获取同名的多个输入并添加数据库。
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Multiple Input</title>
</head>
<body>
<form action="Multiple" method="post">
<div class="table-responsive">
<table class="table table-bordered table-hover" id="sample-table-1">
<thead>
<tr>
<th>familymembers</th>
<th>name</th>
<th>relationship</th>
<th>age</th>
<th>occupation</th>
<th>education</th>
</tr>
</thead>
<tbody>
<tr>
<td>1</td>
<td>
<input type="text" value="" class="form-control" id="name1" label="" name="name" >
</td>
<td>
<input type="text" value="" class="form-control" name="relation" label="">
</td>
<td>
<input type="text" value="" class="form-control" name="age" label="">
</td>
<td>
<input type="text" value="" class="form-control" name="occupation" label="">
</td>
<td>
<input type="text" value="" class="form-control" name="education" label="">
</td>
</tr>
<tr>
<td>2</td>
<td>
<input type="text" value="" class="form-control" id="name2" label="" name="name" >
</td>
<td>
<input type="text" value="" class="form-control" name="relation" label="">
</td>
<td>
<input type="text" value="" class="form-control" name="age" label="">
</td>
<td>
<input type="text" value="" class="form-control" name="occupation" label="">
</td>
<td>
<input type="text" value="" class="form-control" name="education" label="">
</td>
</tr>
<tr>
<td>3</td>
<td>
<input type="text" value="" class="form-control" id="name3" label="" name="name" >
</td>
<td>
<input type="text" value="" class="form-control" name="relation" label="">
</td>
<td>
<input type="text" value="" class="form-control" name="age" label="">
</td>
<td>
<input type="text" value="" class="form-control" name="occupation" label="">
</td>
<td>
<input type="text" value="" class="form-control" name="education" label="">
</td>
</tr>
<tr>
<td>4</td>
<td>
<input type="text" value="" class="form-control" id="name4" label="" name="name" >
</td>
<td>
<input type="text" value="" class="form-control" name="relation" label="">
</td>
<td>
<input type="text" value="" class="form-control" name="age" label="">
</td>
<td>
<input type="text" value="" class="form-control" name="occupation" label="">
</td>
<td>
<input type="text" value="" class="form-control" name="education" label="">
</td>
</tr>
<tr>
<td>5</td>
<td>
<input type="text" value="" class="form-control" id="name5" label="" name="name" >
</td>
<td>
<input type="text" value="" class="form-control" name="relation" label="">
</td>
<td>
<input type="text" value="" class="form-control" name="age" label="">
</td>
<td>
<input type="text" value="" class="form-control" name="occupation" label="">
</td>
<td>
<input type="text" value="" class="form-control" name="education" label="">
</td>
</tr>
</tbody>
</table>
</div>
<div>
<input type="submit" value="submit">
</div>
</form>
</body>
</html>
Java代码
我正在尝试将数据设置到数据库中，它获取同名的多个输入。但是我得到了NullPointerException。
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
try {
response.setContentType("text/html");
PrintWriter out=response.getWriter();
String[] name=request.getParameterValues("name");
String[] relation=request.getParameterValues("relationship");
String[] age=request.getParameterValues("age");
String[] occupation=request.getParameterValues("occupation");
String[] education=request.getParameterValues("education");
Class.forName("com.mysql.jdbc.Driver");
Connection con=DriverManager.getConnection("jdbc:mysql://localhost:3306/sportsevent", "root", "root");
PreparedStatement ps=con.prepareStatement("insert into multiple(idMultiple, name, relationship, age, occupation, education) values(10,?,?,?,?,?)");
for (int i = 0; i < name.length; i++) {
if(name[i] != null) {
ps.setLong(1, 10);
ps.setString(2, name[i]);
ps.setString(3, relation[i]);
ps.setString(4, age[i]);
ps.setString(5, occupation[i]);
ps.setString(6, education[i]);
}
}
ps.executeUpdate();
ResultSet s=ps.executeQuery();
if(s != null)
System.out.println("inserted"+s);
s.close();
}catch (Exception e){System.out.println(e);}
}