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 = "${pageContext.request.contextPath}/user/addUser3"; form.method = "post"; form.submit(); } </script> </head> <body> <form> <table> <tr> <td>账号</td> <td> <input type="text" name="userName"> </td> </tr> <tr> <td>密码</td> <td> <input type="password" name="password"> </td> </tr> <tr> <td> </td> <td> <input type="button" value="提交" onclick="addUser()"> </td> </tr> </table> </form> </body> </html>
1、直接把表单的参数写在Controller相应的方法的形参中
@RequestMapping("/addUser1")
public String addUser1(String userName,String password) {
System.out.println("userName is:"+userName);
System.out.println("password is:"+password);
return "/user/success";
}
2、通过HttpServletRequest接收
@RequestMapping("/addUser2")
public String addUser2(HttpServletRequest request) {
String userName = request.getParameter("userName");
String password = request.getParameter("password");
System.out.println("userName is:"+userName);
System.out.println("password is:"+password);
return "/user/success";
}
3、通过一个bean来接收
1）建立一个和表单中参数对应的bean
public class User { private String userName; private String password; public String getUserName() { return userName; } public void setUserName(String userName) { this.userName = userName; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } }
2）用这个bean来封装接收的参数
@RequestMapping("/addUser3")
public String addUser3(User user) {
System.out.println("userName is:"+user.getUserName());
System.out.println("password is:"+user.getPassword());
return "/user/success";
}
4、通过json数据接收
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Add User</title> <script type="text/javascript" src="${pageContext.request.contextPath}/resource/script/jquery-1.9.1.min.js"></script> <script type="text/javascript"> $(document).ready(function(){ $("#button_submit").click(function(){ var name = $("#userName").val(); var pass = $("#password").val();
var user = {userName:name,password:pass};//拼装成json格式 $.ajax({ type:"POST", url:"${pageContext.request.contextPath}/user/addUser4", data:user, success:function(data){ alert("成功"); }, error:function(e) { alert("出错："+e); } }); }); }); </script> </head> <body> <form> <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("/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";
}