Java 如何在SpringMVC中向服务器发送用户表单数据
我有一个这样的登录表单:Java 如何在SpringMVC中向服务器发送用户表单数据,java,json,forms,rest,spring-mvc,Java,Json,Forms,Rest,Spring Mvc,我有一个这样的登录表单: <form:form modelAttribute="user" method="post" enctype="application/x-www-form-urlencoded"> <form:input path="userEmailId" /> <form:password path="userPassword /> <input type="
<form:form modelAttribute="user" method="post" enctype="application/x-www-form-urlencoded">
<form:input path="userEmailId" />
<form:password path="userPassword />
<input type="submit" value="sign up" />
</form:form>
单击“注册”后,我希望首先将该值转换为json,然后通过post方法将该值发送到服务器。我想使用
restfulweb
服务来实现这一点。对此有何想法?您可以使用JSON
将表单序列化为JSON对象,然后使用AJAX
向web服务发送post请求:
$(function() {
$('#formId').submit(function(event) {
event.preventDefault(); // prevent this form from being submited
var userJson = JSON.stringify(jQuery('#formId').serializeArray());
$.ajax({
type: "POST",
url: "/Path/To/Your/Web/Service",
data: userJson,
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function(data){
alert(data);//handle it in a proper way
},
failure: function(errMsg) {
alert(errMsg);//handle it in a proper way
}
});
return false;
});
});
然后在您的Web服务上,您应该有一个方法来处理此post请求:
@Controller
@RequestMapping("/path/to/your/web/service")
public class WebServiceController{
@RequestMapping(value = "/login", method = RequestMethod.POST)
public ResponseEntity<String> handleLogin(@RequestBody User user){
//user contains data passed from UI form. Check it against your repository(database ? )
}
}
@控制器
@请求映射(“/path/to/your/web/service”)
公共类WebServiceController{
@RequestMapping(value=“/login”,method=RequestMethod.POST)
公共响应handleLogin(@RequestBody User){
//用户包含从UI表单传递的数据。请对照您的存储库(数据库?)进行检查
}
}
请注意,这个示例只是一个简单的示例,它没有考虑与安全性相关的任何方面。,是否可以将此json对象转换回java..?我应该在何处提供此javascript文件的引用。在jsp页面..或某处..?@aarohimeshram@RequestBody User
将处理此转换,或者你可以添加注释@JsonAutoDetect
i用户类,我应该把这个ajax调用代码放在哪里?很抱歉,我对这个春季mvc非常陌生。@aarohimeshram这应该在Jsp或js文件中。$(form)。serializeArray()需要更多的工作才能输出json对象,因为你想让它在另一端。。。
function getFormData($form){
// Make sure the checked checkboxes value is true
$.each($form.find("input[type='checkbox']:checked"), function(i, c){
$(c).val(true);
});
// Serialize
var unindexed_array = $form.serializeArray();
var indexed_array = {};
$.map(unindexed_array, function(n, i){
if(indexed_array[n['name']]){
// concat
var valueArray = [indexed_array[n['name']]];
indexed_array[n['name']] = valueArray.concat(n['value']);
} else {
indexed_array[n['name']] = n['value'];
}
});
// Add the unchecked checkboxes
$.each($form.find("input[type='checkbox']:not(:checked)"), function(i, c){
indexed_array[$(c).attr('name')] = "false";
});
return indexed_array;
}
//...
$.ajax({
url: entityUrl,
method: "POST",
contentType: "application/json",
data: JSON.stringify(getFormData($(form))),
dataType: "json",
success: success,
error: error
});
function getFormData($form){
// Make sure the checked checkboxes value is true
$.each($form.find("input[type='checkbox']:checked"), function(i, c){
$(c).val(true);
});
// Serialize
var unindexed_array = $form.serializeArray();
var indexed_array = {};
$.map(unindexed_array, function(n, i){
if(indexed_array[n['name']]){
// concat
var valueArray = [indexed_array[n['name']]];
indexed_array[n['name']] = valueArray.concat(n['value']);
} else {
indexed_array[n['name']] = n['value'];
}
});
// Add the unchecked checkboxes
$.each($form.find("input[type='checkbox']:not(:checked)"), function(i, c){
indexed_array[$(c).attr('name')] = "false";
});
return indexed_array;
}
//...
$.ajax({
url: entityUrl,
method: "POST",
contentType: "application/json",
data: JSON.stringify(getFormData($(form))),
dataType: "json",
success: success,
error: error
});