我构建了一个要放入JSON结果的对象列表:
Person personA = new Person("nameA", "age");
Person personB = new Person("nameB", "age");
Person personC = new Person("nameC", "age");
List<Car> cars = new ArrayList<Car>();
cars.add(new Car("Blue", "Small", personA));
cars.add(new Car("Green", "Big", personB));
cars.add(new Car("Red", "Big", personC));
在我的JSON结果图中,我把:
result.put("cars", cars);
如何在JavaScript中迭代此集合。我需要访问对象的“深层”元素。
$.getJSON(window.actionName,{
someId: someId}, function (ans){
//I want something like this
foreach(car in ans.cars){
car.person.age
}
});
编辑:
result map private Map<String,List<Car>> result =
new HashMap<String, List<Car>>();
result.put("cars", cars);
但它似乎没有将此列表发送给客户端。我在Chrome调试器中收到此错误:
ReferenceError: value is not defined
... failed to load resource: the server responded with a status of 500 (Internal Server Error)
答案:错误是因为我正在序列化具有hibernante注释的对象。我创建了Bean对象并对它们进行了序列化,现在是序列化(并且迭代正在运行)
答案 0 :(得分:2)
//...
for(var i = 0, car; car = ans.cars[i]; ++i){
alert(car.person.age);
}
答案 1 :(得分:1)
有功能风格:
ans.cars.forEach(function(car) {
// do something with ‘car’
});
这是标准的ECMAScript 5.正如你标记了这个“jquery”,如果你不想依赖于Array.forEach
那么你可能想尝试jQuery版本:
$.each(ans.cars, function(index, car) {
// do something with ‘car’
});