form提交
前端：
<!--用table布局、 label的inline-block 对齐input-->
<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="UTF-8" />
<title>Title</title>
</head>
<body>
<div class="web_login">
<ul>
<ul>
<!--accept-charset 属性规定服务器处理表单数据所接受的字符集.此属性的默认值是
"unknown"，表示表单的字符集与包含表单的文档的字符集相同-->
<form name="form2" accept-charset="utf-8" action="/security/addregister" method="post">
<!--用table对齐-->
<table >
<tr>
<td>用户名：</td>
<td><input type="text" name="username" maxlength="16"/></td>
</tr>
<tr>
<td>密码：</td>
<td><input type="password" name="password1" maxlength="16" /></td>
</tr>
<tr>
<td>确认密码：</td>
<td><input type="password" name="password2" maxlength="16" /></td>
</tr>
</table>
<div class="inputArea">
<a th:href="@{/security/readdoc}" target="_blank">阅读注册协议</a>
<input type="submit" value="同意协议并注册"/>
</div>
</form>
</ul>
</ul>
</div>
</body>
</html>
后端：
@RequestMapping("/addregister")
public String register(HttpServletRequest request){
String username = request.getParameter("username");
String password1 = request.getParameter("password1");
String password2 = request.getParameter("password2");
if (password1.equals(password2))
{
User1 user = new User1();
user.setUserName(username);
user.setUserPwd(password1);
userService.addUser(user);
return "login";
}
else
{
return "register";
}
}