如何在Java中创建嵌套的json
我在用Java创建json时遇到问题.下面是我必须通过Java代码创建的JSON.
I am having a problem in making a json in java. below is the JSON which I have to create through java code.
{"status":"0",
"Response":{
"abc":[
"def":[
"fgh":[
{
"abc":"abc",
"def":"abc",
"ghi":"abc",
},
{
"abc":"abc",
"def":"abc",
"ghi":"abc",
},
{
"abc":"abc",
"def":"abc",
"ghi":"abc",
}
],
"ghi":[
{
"abc":"abc",
"def":"abc",
"ghi":"abc",
},
{
"abc":"abc",
"def":"abc",
"ghi":"abc",
},
{
"abc":"abc",
"def":"abc",
"ghi":"abc",
}
]
]
]
]
}
}
这是Java代码.
JSONObject result = new JSONObject();
JSONObject abcObject = new JSONObject();
JSONArray resultArray = new JSONArray();
JSONArray fghArray = new JSONArray();
JSONArray defArray = new JSONArray();
JSONArray abcArray = new JSONArray();
abcObject.put("abc");
abcObject.put("def");
abcObject.put("ghi");
fghArray.add(abcObject);
defArray.add(fghArray);
abcArray.add(defArray);
result.put("status", 0);
result.put("Response",abcArray);
return resultJson.toString();
问题:
当我将json发送回jsp时.输出未显示.
when i send back the json to a jsp. the output is not showing up.
success:function(data) {
alert(data);
var json = $.toJSON(data);
alert(json);
},
alert(data)正在警告对象，而第二个alert alert(json)没有显示任何内容.
alert(data) is alerting an object and 2nd alert alert(json) is not showing anything.
示例json错误，请更新
The Example json is Wrong Please Update it
JSON对象应该像
{
"key1":"value",
"key2":"value2"
}
JSON数组
[
{
"key1":"value",
"key2":"value2"
},
{
"key1":"value",
"key2":"value2"
}
]
你不能拥有
//Wrong Array format (Array should be list of Objects)
[
"key1": "value",
"key2": "value2"
]
当您嵌套它们时，它们应该像
and when you nest them they should be like
{"key1": "value1",
"key2": [
{
"key1": "value",
"key2": "value2"
},
{
"key1": "value",
"key2": "value2"
}
],
"key3": [
{
"key1": "value",
"key2": "value2"
},
{
"key1": "value",
"key2": "value2"
}
]
}
由于您在上面的示例中使用了一对，因此我已将上述JSON数组更改为JSON对象 新的示例JSON是
Since you where using a pair in your above example i have changed the above JSON array to a JSON Object the new sample JSON is
{
"status": "0",
"Response": {
"abc": {
"def": {
"fgh": [
{
"abc": "abc",
"def": "abc",
"ghi": "abc"
},
{
"abc": "abc",
"def": "abc",
"ghi": "abc"
},
{
"abc": "abc",
"def": "abc",
"ghi": "abc"
}
],
"ghi": [
{
"abc": "abc",
"def": "abc",
"ghi": "abc"
},
{
"abc": "abc",
"def": "abc",
"ghi": "abc"
},
{
"abc": "abc",
"def": "abc",
"ghi": "abc"
}
]
}
}
}
}
以及用于创建上述JSON对象的Java代码
And the Java Code to Create the Above JSON Object
import org.codehaus.jettison.json.JSONArray;
import org.codehaus.jettison.json.JSONException;
import org.codehaus.jettison.json.JSONObject;
public static String createJson() {
JSONObject result = new JSONObject();
JSONObject response = new JSONObject();
JSONObject abc = new JSONObject();
JSONObject def = new JSONObject();
JSONArray fgh = new JSONArray();
JSONArray ghi = new JSONArray();
JSONObject sampleInnerElement = new JSONObject();
try {
sampleInnerElement.put("abc","abc");
sampleInnerElement.put("def","abc");
sampleInnerElement.put("ghi","abc");
//populating the fgh Array
fgh.put(sampleInnerElement);
fgh.put(sampleInnerElement);
fgh.put(sampleInnerElement);
//populating the Ghi Array
ghi.put(sampleInnerElement);
ghi.put(sampleInnerElement);
ghi.put(sampleInnerElement);
def.put("fgh",fgh);
def.put("ghi",ghi);
abc.put("def",def);
response.put("abc",abc);
result.put("status","0");
result.put("response",response);
} catch (JSONException e) {
e.printStackTrace();
}
return result.toString();
}