如何从jsonarray中取数据 Java中JSONArray如何获取数据
\u5982\u4f55\u83b7\u53d6jsonarray\u4e2d \u67d0\u4e2a\u503c1\u3001\u521b\u5efa\u4e00\u4e2ajsonArray\u5bf9\u8c61\u3002\u91cc\u9762\u5305\u542b\u91cd\u590d\u7684\u5185\u5bb9\uff0c\u5982\u56fe\u3002
2\u3001\u7136\u540e\u521b\u5efa\u4e00\u4e2aset\u96c6\u5408\uff0c\u56e0\u4e3aset\u96c6\u5408\u4e2d\u7684\u5143\u7d20\u4e0d\u91cd\u590d\u5177\u6709\u53bb\u91cd\u7684\u6548\u679c\u3002
3\u3001\u901a\u8fc7\u5faa\u73af\u628ajsonArray\u5bf9\u8c61\u4e2d\u7684\u5143\u7d20\u90fd\u6dfb\u52a0\u5230set\u96c6\u5408\u4e14\u5148\u8f93\u51fa\u5143\u5bf9\u8c61\u7684\u5185\u5bb9\u6765\u770b\u6548\u679c\u3002
4\u3001\u628ajsonArray\u6dfb\u52a0\u5230set\u96c6\u5408\u540e\uff0c\u4ece\u4e0a\u4e00\u6b65\u53ef\u4ee5\u770b\u51fa\u662f3\u6761\u8bb0\u5f55\uff0c\u8fd9\u91cc\u628aset\u96c6\u5408\u7684\u957f\u5ea6\u8f93\u51fa\u770b\u4e0b\u5b83\u7684\u5927\u5c0f\u53ef\u4ee5\u53d1\u73b0\u53d8\u5c0f\u4e86\u3002
5\u3001\u518d\u628aset\u96c6\u5408\u8f6c\u6210\u5b57\u7b26\u4e32\u518d\u8f6c\u6362\u6210jsonArray\u5bf9\u8c61\u3002
6\u3001\u91cd\u65b0\u4f7f\u7528for\u5faa\u73af\u628a\u65b0\u8d4b\u503c\u7684jsonArray\u5bf9\u8c61\u503c\u8f93\u51fa\u5c31\u5b8c\u6210\u4e86\u3002
\u8f6c\u5316\u4e3ajson\u5bf9\u8c61\u53bb\u505a\u5427.JSON.parse()\u6216\u8005eval()\u90fd\u53ef\u4ee5\u8f6c\u5316\u7684
\u8f6c\u5316\u5b8c\u4e4b\u540e \u901a\u8fc7 \u5bf9\u8c61\u7684\u5c5e\u6027\u53bb\u62ff\u503c
\u6bd4\u5982\u8bf4.
var json = [{"name":"test", "conditions":[ {"subject":"ip", "predicate":"default", "value":"10.180.26.1"}], "actions":[{ "act":"force edge to cache", "seconds":2}]}];var jsonObj = JSON.parse(json);jsonObj.conditions\u5c31\u662f\u4f60\u8981\u7684\u5427
public static List jsonToBean(String data, Object bean) {
List list = new ArrayList();
try {
JSONArray array;
try {
array = new JSONArray(data);
for (int i = 0; i < array.length(); i++) {
Object toBean = getBean(bean);
JSONObject ob = new JSONObject();
ob = (JSONObject) array.get(i);
toBean = jsonStrToBean(ob, toBean);
list.add(toBean);
}
return list;
} catch (JSONException e) {
try {
Object obj = null;
JSONObject jsonObj = new JSONObject(data);
Object toBean = getBean(bean);
toBean = jsonStrToBean(jsonObj, toBean);
list.add(toBean);
return list;
} catch (JSONException e1) {
log.error("Error covert String to JSONObject", e);
e1.printStackTrace();
}
e.printStackTrace();
log.error("Error covert String to JSONArray", e);
}
} catch (SecurityException e) {
e.printStackTrace();
}
return list;
}
然后取出list集合数据中的值应该没问题了吧。
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绛旓細public static List jsonToBean(String data, Object bean) { List list = new ArrayList();try { JSONArray array;try { array = new JSONArray(data);for (int i = 0; i < array.length(); i++) { Object toBean = getBean(bean);JSONObject ob = new JSONObject();ob = (JSON...
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