Java 在Talend 5.5中使用正则表达式的jsonpath

我有一个json字符串：

我想提取编号节点后面的所有ID：

“0”

，

“1”

，

“2”

…等等

通过使用jsonpath:

$.response.data.0.id

和get

“15124”

，我成功地获得了一个id。 但是我正在寻找一个jsonpath，它将提取Json字符串中的所有ID。 换句话说，这是扩展输出：

15124

，

13498

，

14296

，

13364

，

14060

，

13672

这是我的Json字符串：

{
"response": {
    "code": 200,
    "msg": "Success",
    "data": {
        "0": {
            "id": "15124",
            "name": " yoav (yoavshaki@yahoo.com) - 301519506662355",
            "network_id": 1,
            "network_type": "Facebook",
            "currency": "USD",
            "currency_info": {
                "prefix": "$",
                "postfix": "",
                "name": "US Dollars"
            },
            "timezone": {
                "id": 139,
                "code": "IST",
                "region": "Asia",
                "locality": "Jerusalem",
                "offset": 3,
                "facebook_code": 70
            }
        },
        "1": {
            "id": "13498",
            "name": "(Not in used) Daniel - 30138444",
            "network_id": 1,
            "network_type": "Facebook",
            "currency": "USD",
            "currency_info": {
                "prefix": "$",
                "postfix": "",
                "name": "US Dollars"
            },
            "timezone": {
                "id": 92,
                "code": "PST",
                "region": "America",
                "locality": "Los_Angeles",
                "offset": -7,
                "facebook_code": 1
            }
        },
        "2": {
            "id": "14296",
            "name": "Daniel - ComeOn (bingocafe@walla.com - 1375713835981039)",
            "network_id": 1,
            "network_type": "Facebook",
            "currency": "USD",
            "currency_info": {
                "prefix": "$",
                "postfix": "",
                "name": "US Dollars"
            },
            "timezone": {
                "id": 92,
                "code": "PST",
                "region": "America",
                "locality": "Los_Angeles",
                "offset": -7,
                "facebook_code": 1
            }
        },
        "3": {
            "id": "13364",
            "name": "Erez - 116060088528093",
            "network_id": 1,
            "network_type": "Facebook",
            "currency": "USD",
            "currency_info": {
                "prefix": "$",
                "postfix": "",
                "name": "US Dollars"
            },
            "timezone": {
                "id": 92,
                "code": "PST",
                "region": "America",
                "locality": "Los_Angeles",
                "offset": -7,
                "facebook_code": 1
            }
        },
        "4": {
            "id": "14060",
            "name": "Erez - NordicBet (gianniciano82@gmail.com - 105134566315107)",
            "network_id": 1,
            "network_type": "Facebook",
            "currency": "USD",
            "currency_info": {
                "prefix": "$",
                "postfix": "",
                "name": "US Dollars"
            },
            "timezone": {
                "id": 139,
                "code": "IST",
                "region": "Asia",
                "locality": "Jerusalem",
                "offset": 3,
                "facebook_code": 70
            }
        },
        "5": {
            "id": "13672",
            "name": "Erez - alon.dan - 1378526859026272",
            "network_id": 1,
            "network_type": "Facebook",
            "currency": "USD",
            "currency_info": {
                "prefix": "$",
                "postfix": "",
                "name": "US Dollars"
            },
            "timezone": {
                "id": 92,
                "code": "PST",
                "region": "America",
                "locality": "Los_Angeles",
                "offset": -7,
                "facebook_code": 1
            }
        }
    }
}
}

谢谢所有的帮助

是将java对象转换为json字符串的好方法，反之亦然

• 要将json转换为java对象，请使用：
• 要将java对象转换为json字符串，请使用：

下面是使用[Gson#fromJson（）]将JSON字符串转换为java映射的示例代码

示例代码：

BufferedReader reader = new BufferedReader(new FileReader(new File("resources/json.txt")));
Gson gson = new Gson();
Type type = new TypeToken<Map<String, Map<String, Object>>>() {}.getType();
Map<String, Map<String, Object>> map = gson.fromJson(reader, type);

Map<String, Map<String, Object>> innerMap = (Map<String, Map<String, Object>>) map.get("response").get("data");
for (String key : innerMap.keySet()) {
    System.out.println("key:" + key + " id:" + innerMap.get(key).get("id"));
}

---

谢谢你的回答

---

$.response.data.*.id

确实有效

您是否尝试过

$.response.data.*.id

？@nerdwaller否，这是Java库的语法。您尝试过。。。什么，到目前为止？请不要到这里来让其他人为您编写代码。

$.response.data.*.id

将起作用。您应该在评论中感谢用户，而不是发布新的答案。

key:0 id:15124
key:1 id:13498
key:2 id:14296
key:3 id:13364
key:4 id:14060
key:5 id:13672