一个普通的表单。
表单的代码如下：
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Add User</title><script type="text/javascript">
//添加用户
function addUser() { var form = document.forms[0];
form.action = "${pageContext.request.contextPath}/user/addUser1"; //form.action = "${pageContext.request.contextPath}/user/addUser2";
//form.action = "${pageContext.request.contextPath}/user/addUser3"; form.method = "post";
form.submit();
}</script></head><body>
<form>
<table>
<tr>
<td>账号</td>
<td>
<input type="text" name="userName">
</td>
</tr>
<tr>
<td>密码</td>
<td>
<input type="password" name="password">
</td>
</tr>
<tr>
<td> </td>
<td>
<input type="button" value="提交" onclick="addUser()">
</td>
</tr>
</table>
</form></body></html>1、直接把表单的参数写在Controller相应的方法的形参中
@RequestMapping("/addUser1") public String addUser1(String userName,String password) {
System.out.println("userName is:"+userName);
System.out.println("password is:"+password); return "/user/success";
}2、通过HttpServletRequest接收
@RequestMapping("/addUser2") public String addUser2(HttpServletRequest request) {
String userName = request.getParameter("userName");
String password = request.getParameter("password");
System.out.println("userName is:"+userName);
System.out.println("password is:"+password); return "/user/success";
}3、通过一个bean来接收
1）建立一个和表单中参数对应的bean
public class User {
private String userName;
private String password; public String getUserName() { return userName;
} public void setUserName(String userName) { this.userName = userName;
} public String getPassword() { return password;
} public void setPassword(String password) { this.password = password;
}
}2）用这个bean来封装接收的参数
@RequestMapping("/addUser3") public String addUser3(User user) {
System.out.println("userName is:"+user.getUserName());
System.out.println("password is:"+user.getPassword()); return "/user/success";
}4、通过json数据接收
Add User 账号 密码
依然可以使用bean来接收json数据
@RequestMapping("/addUser4") public String addUser4(User user) {
System.out.println("userName is:"+user.getUserName());
System.out.println("password is:"+user.getPassword()); return "/user/success";
}5、使用jQuery的serializeArray() 方法序列化表单元素
如果表单元素很多，手工拼装成json数据非常麻烦，可以使用jQuery提供的serializeArray()方法序列化表单元素，返回json数据结构数据。
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Add User</title><script type="text/javascript" src="${pageContext.request.contextPath}/resource/script/jquery-1.9.1.min.js"></script><script type="text/javascript">
$(document).ready(function(){
$("#button_submit").click(function(){
//序列化表单元素，返回json数据
var params = $("#userForm").serializeArray();
//也可以把表单之外的元素按照name value的格式存进来
//params.push({name:"hello",value:"man"});
$.ajax({
type:"POST",
url:"${pageContext.request.contextPath}/user/addUser5",
data:params,
success:function(data){
alert("成功");
},
error:function(e) {
alert("出错："+e);
}
});
});
});</script></head><body>
<form id="userForm">
<table>
<tr>
<td>账号</td>
<td>
<input type="text" id="userName" name="userName">
</td>
</tr>
<tr>
<td>密码</td>
<td>
<input type="password" id="password" name="password">
</td>
</tr>
<tr>
<td> </td>
<td>
<input type="button" id="button_submit" value="提交">
</td>
</tr>
</table>
</form></body></html>依然可以使用bean来接收json数据：
@RequestMapping("/addUser5") public String addUser5(User user) {
System.out.println("userName is:"+user.getUserName());
System.out.println("password is:"+user.getPassword()); return "/user/success";
}
