[英]How do I put 2 or more values in a JSONArray that is inside a JSONObject in Spring Boot?
I wanted to put an array of values inside a JSONObject and it should look like this when I save it into the database:我想将一组值放入 JSONObject 中,当我将其保存到数据库中时它应该如下所示:
{
"specName":"Material",
"specValue":"Fabric",
"specName":"Height",
"specValue":
['
'{
"m",
"cm",
"mm"
},
']
}';
The thing is a user would specify an attribute, say for example "Height" and its allowed types/unit of measurement for example are "meter, centimeter, and millimeter" .问题是用户会指定一个属性,例如“高度” ,其允许的类型/测量单位例如是“米、厘米和毫米” 。 My current code is below:
我当前的代码如下:
JSONArray itemTypeArray = new JSONArray();
itemTypeArray.put(specValue);
JSONObject itemTypeObj = new JSONObject();
itemTypeObj.put("specName", specName);
itemTypeObj.put("specValue", itemTypeArray);
itemType.setItemSpecs(itemTypeObj);
But when this saves on the database, it's not as I expected and I am having a hard time looking for answers and my last resort is to ask it here.但是当这保存在数据库中时,它并不像我预期的那样,我很难寻找答案,我最后的手段是在这里问它。 The current value that saves to the database is as follows:
保存到数据库的当前值如下:
{"specName":"Material,Height","specValue":["Fabric, m, cm, mm"]}
It adds everything up on the same field.它将所有内容添加到同一个字段中。
My HTML code is this:我的 HTML 代码是这样的:
<div>
<label>Type: </label>
<input type="text" th:field="*{typeName}" />
</div>
<div>
<div class="specFields-wrapper">
</div>
<button type="button" class="c-button submit" onclick="addSpec();">Add Specification</button>
</div>
<script text="text/javascript">
function addSpec() {
let specFieldLabel = '<span>Label: <input type="text" name="specName"></span>\r\n';
let specFieldValue = '<span>Value: <input type="text" name="specValue"></span>\r\n';
document.querySelector('.specFields-wrapper').innerHTML += (specFieldLabel+specFieldValue)+'<br>';
}
</script>
Any help is appreciated.任何帮助表示赞赏。 Thanks in advance: :)
提前致谢: :)
Check out this example看看这个例子
public static void main(String[] args) throws Exception {
JSONObject json1 = new JSONObject();
json1.put("specName", "Material");
json1.put("specValue", "Fabric");
JSONObject json2 = new JSONObject();
json2.put("specName", "Height");
json2.put("specValue", new JSONArray(Arrays.asList("m","cm","mm")));
JSONArray array = new JSONArray();
array.put(json1.toMap());
array.put(json2.toMap());
String jsonFormatted = array.toString(2);
System.out.println(jsonFormatted);
}
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