Form表单传递List数组属性到后台对象中
第一层属性的List
后台有一个对象 User ,结构如下:
public class User{
private String username;
private List<PhotoDo> photo;
..get ....set.....
}
public class PhotoDo{
private String id;
private String name;
...get...set...
}
Controller中接受方法 getUser
@reqeustMapping("/getUser")
public void getUser(User user){
...实现方法...
}
前台Form这么写:
<form>
<input type="text" name="username" aciton="..">
<input type="text" name="photo[0].id">
<input type="text" name="photo[0].name">
<input type="text" name="photo[1].id">
<input type="text" name="photo[1].name">
<input type="text" name="photo[2].id">
<input type="text" name="photo[2].name">
</form>
第二层属性的List
如果List属性不是在User属性的第一层,而是在第二层,则需要处理一下。
后台有一个对象 User ,结构如下:
public class User{
private String username;
private Address address;
..get ....set.....
}
public class Address{
private List<PhotoDo> photo;
..get ....set.....
}
public class PhotoDo{
private String id;
private String name;
...get...set...
}
Controller中接受方法 getUser
@reqeustMapping("/getUser")
public void getUser(User user){
...实现方法...
}
前台Form这么写:
<form>
<input type="text" name="username" aciton="..">
<input type="text" name="address.photo[0].id">
<input type="text" name="address.photo[0].name">
<input type="text" name="address.photo[1].id">
<input type="text" name="address.photo[1].name">
<input type="text" name="address.photo[2].id">
<input type="text" name="address.photo[2].name">
</form>
Js中需要作处理:
$("button.save").on("click", function () {
debugger;
var data = $("#user").formGet();
var photos = new Array();
for (var i in data.address) {
photos.push(data.address[i]);
}
data.photos= photos;
$.ajax({
type: "POST",
url: "/user/save",
contentType: "application/json",
data: JSON.stringify(data),
success: function (result) {
console.log(result);
if (!result.code) {
$("#mutation").formSet(data);
location.href = "/user"
} else {
alert(result.msg);
}
},
error: function () {
alert("出错了,请稍后重试");
}
});
});
其中使用的几个函数为:
/**
* jQuery form 扩展获取数据
*/
$.fn.formGet = function(opts) {
opts = $.extend({}, opts);
var data = {},
els = opts.formGroup ? this.find("[form-group="" + opts.formGroup + ""]") : this.find("[name]");
if (!els || !els.length) {
return data;
}
var fnSetValue = (function(emptyToNull) {
return emptyToNull ? function(obj, propertyChain, value, allowMulti) {
value !== "" && _fnObjectSetPropertyChainValue(obj, propertyChain, value, allowMulti)
} : _fnObjectSetPropertyChainValue
})(opts.emptyToNull);
els.each(function() {
var $this = $(this),
type = $this.attr("type"),
name = $this.attr("name"), // 可能为属性链
tag = this.tagName.toLowerCase();
if (tag == "input") {
if (type == "checkbox") {
var v = $(this).val();
if (v == "on" || !v) {
fnSetValue(data, name, $(this).prop("checked"));
} else {
$(this).prop("checked") && fnSetValue(data, name, v, true);
}
} else if (type == "radio") {
this.checked && fnSetValue(data, name, $this.val());
} else {
fnSetValue(data, name, $this.val());
}
} else if ("|select|textarea|".indexOf("|" + tag + "|") > -1) {
fnSetValue(data, name, $this.val());
} else {
fnSetValue(data, name, $.trim($this.text()));
}
});
return data;
};
/**
* jQuery form 扩展绑定数据
*
*/
$.fn.formSet = function(data, formGroup) {
var els = formGroup ? this.find("[form-group="" + formGroup + ""]") : this.find("[name]");
if (!els || !els.length) {
return this;
}
els.each(function() {
var $this = $(this),
type = $this.attr("type"),
name = $this.attr("name"),
tag = this.tagName.toLowerCase();
var value = _fnObjectGetPropertyChainValue(data, name);
if (tag == "input") {
if (type == "checkbox") {
var v = $(this).val();
if (v == "on" || !v) {
this.checked = value ? "checked" : "";
} else {
this.checked = $.isArray(value) && value.indexOf(v) > -1 ? "checked" : ""
}
} else if (type == "radio") {
this.checked = $this.val() == String(value) ? "checked" : "";
} else {
$this.val(value);
}
} else if ("|select|textarea|".indexOf("|" + tag + "|") > -1) {
$this.val(value);
} else {
$this.html(value);
}
});
return this;
};
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