框架：HTTP请求的表单提交的几种方式
其实就是三种：
1. 直接把表单的参数写在Controller相应的方法的形参中
2. 通过HttpServletRequest接收
3. 通过一个bean来接收（JSON转bean）就是我的项目中使用的方法
先创建一个LoginForm
然后通过getter方法获取对象中的属性数据
详解
1.前台主要代码
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1. <form>
2. <table>
3. <tr>
4. <td>账号</td>
5. <td>
6. <input type="text" name="userName">
7. </td>
8. </tr>
9. <tr>
10. <td>密码</td>
11. <td>
12. <input type="password" name="password">
13. </td>
14. </tr>
15. <tr>
16. <td> </td>
17. <td>
18. <input type="button" value="提交" onclick="addUser()">
19. </td>
20. </tr>
21. </table>
22. </form>
2. 接收方式1------直接把表单的参数写在Controller相应的方法的形参中
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1. @RequestMapping("/addUser1")
2. public String addUser1(String userName,String password) {
3. System.out.println("userName is:"+userName);
4. System.out.println("password is:"+password);
5. return "/user/success";
6. }
3.接收方式2-----通过HttpServletRequest接收
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1. @RequestMapping("/addUser2")
2. public String addUser2(HttpServletRequest request) {
3. String userName = request.getParameter("userName");
4. String password = request.getParameter("password");
5. System.out.println("userName is:"+userName);
6. System.out.println("password is:"+password);
7. return "/user/success";
8. }
4. 通过一个bean来接收
（1）建立一个和表单参数对应的bean
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1. public class User {
2.
3. private String userName;
4.
5. private String password;
6.
7. public String getUserName() {
8. return userName;
9. }
10.
11. public void setUserName(String userName) {
12. this.userName = userName;
13. }
14.
15. public String getPassword() {
16. return password;
17. }
18.
19. public void setPassword(String password) {
20. this.password = password;
21. }
22. }
2)通过这个bean来封装接收的参数
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1. @RequestMapping("/addUser3")
2. public String addUser3(User user) {
3. System.out.println("userName is:"+user.getUserName());
4. System.out.println("password is:"+user.getPassword());
5. return "/user/success";
6. }
5. 通过json 数据来接收参数
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1. <%@ page language="java" contentType="text/html; charset=UTF-8"
2. pageEncoding="UTF-8"%>
3. <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
4. <html>
5. <head>
6. <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
7. <title>Add User</title>
8.
9. <script type="text/javascript" src="${pageContext.request.contextPath}/resource/script/jquery-1.9.1.min.js"></script>
10. <script type="text/javascript">
11. $(document).ready(function(){
12. $("#button_submit").click(function(){
13. var name = $("#userName").val();
14. var pass = $("#password").val();
15.
16.
17. var user = {userName:name,password:pass};//拼装成json格式
18.
19. $.ajax({
20. type:"POST",
21. url:"${pageContext.request.contextPath}/user/addUser4",
22. data:user,
23. success:function(data){
24. alert("成功");
25. },
26. error:function(e) {
27. alert("出错："+e);
28. }
29. });
30. });
31. });
32. </script>
33.
34. </head>
35. <body>
36. <form>
37. <table>
38. <tr>
39. <td>账号</td>
40. <td>
41. <input type="text" id="userName" name="userName">
42. </td>
43. </tr>
44. <tr>
45. <td>密码</td>
46. <td>
47. <input type="password" id="password" name="password">
48. </td>
49. </tr>
50. <tr>
51. <td> </td>
52. <td>
53. <input type="button" id="button_submit" value="提交">
54. </td>
55. </tr>
56. </table>
57. </form>
58. </body>
59. </html>
依然可以用Bean来接收json数据
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1. @RequestMapping("/addUser4")
2. public String addUser4(User user) {
3. System.out.println("userName is:"+user.getUserName());
4. System.out.println("password is:"+user.getPassword());
5. return "/user/success";
6. }
6、 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数据很麻烦，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。
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1. <%@ page language="java" contentType="text/html; charset=UTF-8"
2. pageEncoding="UTF-8"%>
3. <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
4. <html>
5. <head>
6. <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
7. <title>Add User</title>
8.
9. <script type="text/javascript" src="${pageContext.request.contextPath}/resource/script/jquery-1.9.1.min.js"></script>
10. <script type="text/javascript">
11. $(document).ready(function(){
12. $("#button_submit").click(function(){
13.
14. //序列化表单元素，返回json数据
15. var params = $("#userForm").serializeArray();
16.
17. //也可以把表单之外的元素按照name value的格式存进来
18. //params.push({name:"hello",value:"man"});
19.
20. $.ajax({
21. type:"POST",
22. url:"${pageContext.request.contextPath}/user/addUser5",
23. data:params,
24. success:function(data){
25. alert("成功");
26. },
27. error:function(e) {
28. alert("出错："+e);
29. }
30. });
31. });
32. });
33. </script>
34.
35. </head>
36. <body>
37. <form id="userForm">
38. <table>
39. <tr>
40. <td>账号</td>
41. <td>
42. <input type="text" id="userName" name="userName">
43. </td>
44. </tr>
45. <tr>
46. <td>密码</td>
47. <td>
48. <input type="password" id="password" name="password">
49. </td>
50. </tr>
51. <tr>
52. <td> </td>
53. <td>
54. <input type="button" id="button_submit" value="提交">
55. </td>
56. </tr>
57. </table>
58. </form>
59. </body>
60. </html>
依然可以使用bean来接收json数据
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1. @RequestMapping("/addUser5")
2. public String addUser5(User user) {
3. System.out.println("userName is:"+user.getUserName());
4. System.out.println("password is:"+user.getPassword());
5. return "/user/success";