解析复杂数据结构与JSON序列化-优快云博客

本文详细解析了一个使用Java处理复杂数据结构的过程，包括一维数组、二维数组、Map、List及其相互转换为JSON格式的具体实现。通过实例代码展示如何将数据封装到Map中，并最终序列化为JSON字符串。

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代码如下：

for (int i1 = 0, l = list.size(); i1 < l; i1++) {
						Object[] t = (Object[]) list.get(i1);
						node = new Node(t[1].toString(), t[0].toString());
						nodeList.add(node);

						List l1 = new ArrayList();
						List l2 = new ArrayList();

						Map m = new HashMap();
						m.put("name", personPlace);
						Map m2 = new HashMap();
						m2.put("name", t[1].toString());
						l1.add(m);
						l1.add(m2);

						Map m3 = new HashMap();
						m3.put("name", t[1].toString());
						m3.put("value", t[0].toString());

						l2.add(m);
						l2.add(m3);

						placesLink.add(l1);
						PlaceCounts.add(l2);

						String a = JsonMapperUtils.objectToJson(l2);
						String b = JsonMapperUtils.objectToJson(PlaceCounts);
						String c = JsonMapperUtils.objectToJson(m3);
						String d = JsonMapperUtils.objectToJson(l1);

					}

　　输出结果：

一维数组：
String[] a = new String[phoneList.size()];

二维数组：
String[][] b =new String[phoneList.size()][2];

map:
m: {name=北京}
m3:{name=南昌, value=2}

list:
l1:[{name=北京}, {name=南昌}]
l2:[{name=北京}, {name=南昌, value=2}]

list中的list
placeCounts:[[{name=北京}, {name=南昌, value=2}]]

对应的json格式：
a:
["a","b","c"]
b:
[["a","b"],["a1","b1"],["c1","d1"],["c12","d22"]]
m3:
{"name":"南昌","value":"2"}
l2：
[{"name":"北京"},{"name":"南昌","value":"2"}]
placeCounts:
[[{"name":"北京"},{"name":"南昌","value":"2"}]]
[[{"name":"北京"},{"name":"南昌","value":"2"}],[{"name":"北京"},{"name":"重庆","value":"4"}]]

Map<String, Object> info = new HashMap<String, Object>();
info.put("nodeList", nodeList);
info.put("placesLink", placesLink); //数组
info.put("PlaceCounts", PlaceCounts); //数组
String json = JsonMapperUtils.objectToJson(info);

　输出结果

{"phoneNums":["北京"],"nodeList":[{"name":"南昌","value":"2"},{"name":"重庆","value":"4"},{"name":"拉萨","value":"2"},{"name":"上海","value":"1"}],
"PlaceCounts":[["name:北京","name:南昌,value:2"],["name:北京","name:重庆,value:4"],["name:北京","name:拉萨,value:2"],["name:北京","name:上海,value:1"]],
"success":true,
"placesLink":[["{name:北京}","{name:南昌}"],["{name:北京}","{name:重庆}"],["{name:北京}","{name:拉萨}"],["{name:北京}","{name:上海}"]]}

Map<String, Object> info = new HashMap<String, Object>();
info.put("nodeList", nodeList);
info.put("placesLink", placesLink); //list<list<map<key,value>>>
String json = JsonMapperUtils.objectToJson(info);

　输出结果

{"phoneNums":["北京"],
"nodeList":[{"name":"南昌","value":"2"},{"name":"重庆","value":"4"},{"name":"拉萨","value":"2"},{"name":"上海","value":"1"}],
"PlaceCounts":[[{"name":"北京"},{"name":"南昌","value":"2"}],[{"name":"北京"},{"name":"重庆","value":"4"}],[{"name":"北京"},{"name":"拉萨","value":"2"}],
[{"name":"北京"},{"name":"上海","value":"1"}]],
"success":true,
"placesLink":[[{"name":"北京"},{"name":"南昌"}],[{"name":"北京"},{"name":"重庆"}],[{"name":"北京"},{"name":"拉萨"}],[{"name":"北京"},{"name":"上海"}]]}

转载于:https://www.cnblogs.com/estellez/p/4925271.html