[英]store arraylist in oracle database
這是我在數據庫中存儲arraylist的代碼,但是我遇到了一些問題,只有arraylist的第一個元素存儲在數據庫中。 請幫助
int invoice_no,bookno;
static ArrayList<Integer> reference=new ArrayList<>();
static ArrayList<Integer> quantity2 = new ArrayList<>();
public void abc1()
{
try
{
System.out.println("hello");
Class.forName("oracle.jdbc.driver.OracleDriver");
Connection connection=DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:XE","system","anchit");
Statement statement=connection.createStatement();
ResultSet r1=statement.executeQuery("select max(invoice_no) from invoice_detail");
int a=1;
while(r1.next())
{
a=r1.getInt(1);
System.out.println(r1.getInt(1));
}
System.out.println("a="+a);
invoice_no=a+1;
if(invoice_no%50==0)
bookno=(invoice_no/50);
else
bookno=(invoice_no/50)+1;
System.out.println(invoice_no+","+bookno);
System.out.println(reference);
for(int i=0;i<reference.size();i++)
{
Class.forName("oracle.jdbc.driver.OracleDriver");
Connection connection1=DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:XE","system","anc123hit");
Statement statement1=connection1.createStatement();
//int b=
System.out.println(reference.get(i));
//int c=quantity2.get(i);
ResultSet r=statement1.executeQuery("insert into invoice_detail values("+invoice_no+","+bookno+","
+reference.get(i)+","+quantity2.get(i)+", to_char(sysdate,'dd-mon-yy'),'anchit','abcd')");
r.next();
connection1.close();
}
connection.close();
}
catch(Exception e)
{}
}
這是我在數據庫中存儲arraylist的代碼,但是我遇到一些問題,只有arraylist的第一個元素存儲在數據庫中。 請幫助
這種行為來當您嘗試使用.executeQuery()
在DML( insert
, update
, delete
)操作,你應該使用.executeUpdate()
來代替。
Statement statement1=connection1.createStatement();
//int b=
System.out.println(reference.get(i));
//int c=quantity2.get(i);
//ResultSet r=;
statement1.executeUpdate("insert into invoice_detail values("+invoice_no+","+bookno+","
+reference.get(i)+","+quantity2.get(i)+", to_char(sysdate,'dd-mon-yy'),'anchit','abcd')");
//r.next();
通常,在DML上使用.executeQuery時,編譯器會拋出錯誤,即查詢不返回ResultSet。
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.