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使用Jquery向REST端點發送POST請求

[英]Sending POST request to REST endpoint using Jquery

我想提交注冊表中的所有字段,並將它們存儲在PostgreSQL數據庫中。 我正在使用Spring MVC和jQuery。 / save的POST請求僅在使用郵遞員的情況下有效。 當我單擊“注冊”按鈕提交表單時,它給了我-

“不支持請求方法'POST'”。

有誰能夠幫助我?

用戶控制器:

@RestController
public class UserController {

    @Autowired
    private UserService userService;

    @RequestMapping(method=RequestMethod.POST, value="/save", headers="Accept=application/x-www-form-urlencoded")
    public void registerUser(@RequestBody User user) {
        userService.registerUser(user);
    }
}

的PageController:

@Controller
public class PageController {

    @RequestMapping("/login")
    public String login () {
        return "index.html";
    }

}

模型:

@Entity
@Data
@Table(name="users")
public class User {

    @Id @GeneratedValue
    private long id;

    @Column(name="sex")
    private String sex;

    @Column(name="skype")
    private String skype;

    @Column(name="username")
    private String userName;

    @Column(name="email")
    private String email;

    @Column(name="password")
    private String password;

    protected User(){};
}

HTML:

<!doctype html>
<html>
<head>
<title>Login / Register</title>
<link 
href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css" 
rel="stylesheet" type="text/css">
<link href="http://netdna.bootstrapcdn.com/font-awesome/4.0.3/css/font-
awesome.min.css" rel="stylesheet" type="text/css">
<link rel="stylesheet" type="text/css" href="css/style.css">
<script src="js/login.js"></script>
</head>
<body>
<br>
<div class="row">
    <div class="container">
        <div class="login-register-form-section">
            <ul class="nav nav-tabs" role="tablist">
                <li class="active"><a href="#login" data-
 toggle="tab">Login</a></li>
                <li><a href="#register" data-toggle="tab">Register</a></li>
            </ul>
            <div class="tab-content">
                <div role="tabpanel" class="tab-pane fade in active" 
 id="login">
                    <form class="form-horizontal" method="post" action="">
                        <div class="form-group " >
                            <div class="input-group">
                                <div class="input-group-addon"><i class="fa fa-user"></i></div>
                                <input type="text" name="login_email" class="form-control" placeholder="Username or email" required="required" value="">
                            </div>
                        </div>
                        <div class="form-group ">
                            <div class="input-group">
                                <div class="input-group-addon"><i class="fa fa-key"></i></div>
                                <input type="password" name="login_password" class="form-control" placeholder="Password" required="required">
                            </div>
                        </div>
                        <div class="form-group">
                            <input type="checkbox" id="rememberMe">
                            <label for="rememberMe">Remember Me</label>
                            <a href="#" class="pull-right">Forgot password?</a>
                        </div>  
                        <input type="submit" value="Login" class="btn btn-success btn-custom">
                    </form>
                </div>
                <div role="tabpanel" class="tab-pane fade" id="register">
                    <form class="form-horizontal" method="post" action="">
                        <div class="form-group" id="sex">
                            <div class="input-group">
                                <div class="input-group-addon"><i class="fa fa-user"></i></div>
                                <select type="text" name="gender" class="form-control">
                                <option>Male</option>
                                <option>Female</option>
                                </select>
                            </div>
                        </div>
                        <div class="form-group ">
                            <div class="input-group">
                                <div class="input-group-addon"><i class="fa fa-male"></i></div>
                                <input type="text" name="register_username" class="form-control" placeholder="Username" required="required" value="">
                            </div>
                        </div>
                        <div class="form-group ">
                            <div class="input-group">
                                <div class="input-group-addon"><i class="fa fa-envelope"></i></div>
                                <input type="email" name="register_email" class="form-control" placeholder="Email" required="required" value="">
                            </div>
                        </div>
                        <div class="form-group ">
                            <div class="input-group">
                                <div class="input-group-addon"><i class="fa fa-skype"></i></div>
                                <input type="text" name="register_skype" class="form-control" placeholder="Skype name" required="required" value="">
                            </div>
                        </div>
                        <div class="form-group ">
                            <div class="input-group">
                                <div class="input-group-addon"><i class="fa fa-lock"></i></div>
                                <input type="password" name="register_password" class="form-control" placeholder="Password" required="required">
                            </div>
                        </div>
                        <input type="submit" id="submitbtn" value="Register" class="btn btn-success btn-custom">
                    </form>
                </div>
            </div>
        </div>
    </div>
</div>

jQuery的:

jQuery(document).ready(
function($) {

    $("#submitbtn").click(function(event) {

        var data = {}
        data["sex"] = $("#sex").val();
        data["skype"] = $("#register_username").val();
        data["username"] = $("#register_email").val();
        data["email"] = $("#register_skype").val();
        data["password"] = $("#register_password").val();

        $("#submitbtn").prop("disabled", true);

        $.ajax({
                 type: "POST",
                 contentType: "application/json",
                 url: "/save",
                 data: JSON.stringify(data),
                 dataType: 'json',
                 timeout: 600000,
                 success: function (data) {
                     console.log("DONE");
                 },
                 error: function (e) {
                     console.log("ERROR: ", e);
                     display(e);
                 }
        });


    });

});

您可以嘗試使用輸入類型=“按鈕”來代替輸入類型=“提交”

更改行data["username"] = $("#register_email").val(); to data["userName"] = $("#register_email").val(); data["username"] = $("#register_email").val(); to data["userName"] = $("#register_email").val();

您在ajax調用中發送application/json ,但是在您的控制器中,您說端點僅接受application/x-www-form-urlencoded

您可以更改控制器以接受application/json

@RequestMapping(method=RequestMethod.POST, value="/save", headers="Accept=application/json")

為了避免輸入錯誤,您還可以使用@RequestMappingconsumes屬性,並將其傳遞給MediaType常量:

@RequestMapping(method=RequestMethod.POST, value="/save", consumes=MediaType.APPLICATION_JSON_VALUE)

或者,您可以重構ajax調用以發送序列化的表單數據。

正如@sparrow所建議的那樣,您可能還希望將按鈕的type屬性更改為button ,以避免默認的瀏覽器提交行為。 或者,您可以調用event.preventDefault(); 在您的點擊處理程序函數內部完成相同的操作,但是除非您確實想要使用瀏覽器的默認提交行為,否則使用type="submit"並沒有多大意義。

好的,問題是我沒有正確選擇dom元素,而是使用name =“ email”而不是id =“ email”。

<input type="text" name="register_skype" ...... >

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