我无法将每个结果集记录添加到json数组中。 我有从三个表中获取的数据，我强大了jsonarray1中table1 record1的结果和jsonarray2中table2 record1的结果，依此类推。 最后将组合记录添加到JSON对象，这是一个完整的记录。所以问题是当我打印一个JSON对象时，每个记录提供准确的数据。现在我正在向JSON数组添加一条记录。但是当我打印json数组时，它首先显示准确记录，但是当进入下一步时，它将第三次打印第二次记录三次。但我想要第一，第二，第三等等< / p>
String queryforCustomers="SELECT * FROM customers";
String queryforCustomer="SELECT * FROM customers where id=?";
String queryfortax_info="SELECT * FROM `customer_tax_info` where customer_id=?";
String queryforcustomer_address="SELECT * from customer_address where customer_id=?";
try
{
//for customer
statement=connection.prepareStatement(queryforCustomers);
rs1=statement.executeQuery();
JSONObject customerobj=null;//result of customer information
JSONObject finalobj1=new JSONObject();//result of every customer records
JSONArray customersAll=new JSONArray(); //final result(all data)
while(rs1.next())
{
int id=rs1.getInt("id");
System.out.println("Id "+id );
// for adding kth element to araay
statement=connection.prepareStatement(queryforCustomer);
statement.setInt(1, id);
rs2=statement.executeQuery();
JSONArray arraycustomer=null;
arraycustomer=Convertor.convertResultSetIntoJSON(rs2);
//System.out.println("Customer Array: "+arraycustomer);
rs2.close();
statement.close();
statement=connection.prepareStatement(queryfortax_info);
statement.setInt(1, id);
rs2=statement.executeQuery();
JSONArray arrayCustomer_tax_info=null;
arrayCustomer_tax_info=Convertor.convertResultSetIntoJSON(rs2);
//System.out.println("Customer TAx: "+arrayCustomer_tax_info);
rs2.close();
statement.close();
statement=connection.prepareStatement(queryforcustomer_address);
statement.setInt(1, id);
rs3=statement.executeQuery();
JSONArray arrayCustomer_address=null;
arrayCustomer_address=Convertor.convertResultSetIntoJSON(rs3);
// System.out.println("Customer Address: "+arrayCustomer_address);
rs3.close();
statement.close();
finalobj1.put("customer_address",arrayCustomer_address);
finalobj1.put("customer_tax_info",arrayCustomer_tax_info);
finalobj1.put("customers", arraycustomer);
customersAll.put(finalobj1);
System.out.println("Final 1 "+finalobj1);
System.out.println("Final "+customersAll.toString());
}
System.out.println("Final "+customersAll.toString());
}
catch(Exception e)
{
e.printStackTrace();
}
Output {
"customers": [
{
"customer_address": [
{
"zip": "171004",
"country": "India",
"address": "V.PO Chadwal Distt Kathua, Teh Hiranagar Jammu, Jammu and Kashmir in",
"as_ship": 1,
"city": "Shimla",
"created": "2017-10-10 12:59:45.0"
}
],
"customer_tax_info": [
{
"payment_term": "123",
"created": "2017-10-10 12:59:45.0",
"tax_reg_no": "1235",
"id": 1,
"customer_id": 1,
"pan": ""
}
],
"customers": [
{
"website": "",
"user_id": 1,
"created": "2017-10-10 12:59:45.0",
"company_name": "Trinity",
"mobile": "8872406723",
"last_name": "Thakur",
"id": 1,
"first_name": "Aneh",
"status": 0
}
]
},
{
"customer_address": [
{
"zip": "171004",
"country": "India",
"address": "V.PO Chadwal Distt Kathua, Teh Hiranagar Jammu, Jammu and Kashmir in",
"as_ship": 1,
"city": "Shimla",
"created": "2017-10-10 12:59:45.0"
}
],
"customer_tax_info": [
{
"payment_term": "123",
"created": "2017-10-10 12:59:45.0",
"tax_reg_no": "1235",
"id": 1,
"customer_id": 1,
"pan": ""
}
],
"customers": [
{
"website": "",
"user_id": 1,
"created": "2017-10-10 12:59:45.0",
"company_name": "Trinity",
"mobile": "8872406723",
"last_name": "Thakur",
"id": 1,
"first_name": "Aneh",
"status": 0
}
]
},
{
"customer_address": [
{
"zip": "171004",
"country": "India",
"address": "V.PO Chadwal Distt Kathua, Teh Hiranagar Jammu, Jammu and Kashmir in",
"as_ship": 1,
"city": "Shimla",
"created": "2017-10-10 12:59:45.0"
}
],
"customer_tax_info": [
{
"payment_term": "123",
"created": "2017-10-10 12:59:45.0",
"tax_reg_no": "1235",
"id": 1,
"customer_id": 1,
"pan": ""
}
],
"customers": [
{
"website": "",
"user_id": 1,
"created": "2017-10-10 12:59:45.0",
"company_name": "Trinity",
"mobile": "8872406723",
"last_name": "Thakur",
"id": 1,
"first_name": "Aneh",
"status": 0
}
]
}
]
}
答案 0 :(得分：1)
正如我在您的代码中所看到的那样，您已宣布＆＃34; customersAll＆＃34;和＆＃34; finalobj1＆＃34;在while循环中，迭代结果集＆＃34; rs1＆＃34;即查询＆＃34; queryforCustomers＆＃34;
您的代码有什么问题： 你已宣布＆＃34; customersAll＆＃34;在while循环之外，这是正确的，但你不应该声明＆＃34; finalobj1＆＃34;循环外，因为你正在迭代结果集＆＃34; rs1＆＃34;你每次都在＆＃34; customersAll＆＃34;中添加相同的对象。对象
您能否修改下面的代码并检查
JSONObject customerobj=null;//result of customer information
JSONArray customersAll=new JSONArray(); //final result(all data)
while(rs1.next())
{
JSONObject finalobj1=new JSONObject();
//"finalobj1" moved to inside of while loop
. //rest of your code
.
.
}