從JSONObject響應中提取數據

我有以下響應，並且我試圖提取sale和related_resources下的id。從JSONObject響應中提取數據

到目前爲止，我已經嘗試檢索此ID與以下，但我想我試圖得到一個陣列的兩倍（原因是他們有一個[盈他們會在錯誤的軌道。

confirm.toJSONObject().getJSONObject("response").getJSONArray("transactions").getJSONArray("related_resources")

的Eclipse然後會顯示以下信息The method getJSONArray(int) in the type JSONArray is not applicable for the arguments (String)什麼是正確的方法來提取所需的數據

{ 
    "id": "PAY-17S8410768582940NKEE66EQ", 
    "create_time": "2013-01-31T04:12:02Z", 
    "update_time": "2013-01-31T04:12:04Z", 
    "state": "approved", 
    "intent": "sale", 
    "payer": { 
    "payment_method": "credit_card", 
    "funding_instruments": [ 
     { 
     "credit_card": { 
      "type": "visa", 
      "number": "xxxxxxxxxxxx0331", 
      "expire_month": "11", 
      "expire_year": "2018", 
      "first_name": "Betsy", 
      "last_name": "Buyer", 
      "billing_address": { 
      "line1": "111 First Street", 
      "city": "Saratoga", 
      "state": "CA", 
      "postal_code": "95070", 
      "country_code": "US" 
      } 
     } 
     } 
    ] 
    }, 
    "transactions": [ 
    { 
     "amount": { 
     "total": "7.47", 
     "currency": "USD", 
     "details": { 
      "tax": "0.03", 
      "shipping": "0.03" 
     } 
     }, 
     "description": "This is the payment transaction description.", 
     "related_resources": [ 
     { 
      "sale": { 
      "id": "4RR959492F879224U", 
      "create_time": "2013-01-31T04:12:02Z", 
      "update_time": "2013-01-31T04:12:04Z", 
      "state": "completed", 
      "amount": { 
       "total": "7.47", 
       "currency": "USD" 
      }, 
      "parent_payment": "PAY-17S8410768582940NKEE66EQ", 
      "links": [ 
       { 
       "href": "https://api.sandbox.paypal.com/v1/payments/sale/4RR959492F879224U", 
       "rel": "self", 
       "method": "GET" 
       }, 
       { 
       "href": "https://api.sandbox.paypal.com/v1/payments/sale/4RR959492F879224U/refund", 
       "rel": "refund", 
       "method": "POST" 
       }, 
       { 
       "href": "https://api.sandbox.paypal.com/v1/payments/payment/PAY-17S8410768582940NKEE66EQ", 
       "rel": "parent_payment", 
       "method": "GET" 
       } 
      ] 
      } 
     } 
     ] 
    } 
    ], 
    "links": [ 
    { 
     "href": "https://api.sandbox.paypal.com/v1/payments/payment/PAY-17S8410768582940NKEE66EQ", 
     "rel": "self", 
     "method": "GET" 
    } 
    ] 
}

UPDATE：我現在可以提取銷售ID，但感覺像是一個黑客。有沒有更好的辦法：

  JSONObject obj = new JSONObject(input.toString()); 

     String temp = obj.getJSONArray("transactions").getJSONObject(0) 
       .getJSONArray("related_resources").getJSONObject(0) 
       .toString(); 

     JSONObject obj2 = new JSONObject(temp); 
     String temp2 = obj2.getJSONObject("sale").getString("id"); 

     System.out.println(temp); 
     System.out.println(temp2);

來源

2015-01-03 at010

你使用哪個庫？（是傑克遜？） –

'transactions'是一個數組 - 你需要迭代它的每個元素並從每個元素獲取'related_resources'。 – RobP

getJSONArray("transactions")返回一個數組。你只能通過它的位置從數組中獲得一個對象。因此，您需要首先獲取索引爲0的對象（數組中的第一個對象），然後可以調用getJSONArray("related_resources")

我不是一個真正的Java程序員，但我猜.get(0)可以做到這一點。

一個簡單的方法來找到你錯誤的地方，將每個部分分成它自己的var並打印它們。

Array transactions = getJSONArray("transactions"); 
Log.v(0, transactions); 
Array related = transactions.get(0).getJSONArray("related_resources"); 
Log.v(0, related);

來源

2015-01-03 23:22:26 Darren

從JSONObject響應中提取數據

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