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[英]Found issue in java application connecting with oracle database,SQLException: Io exception: Got minus one from a read call ,how I can solve it?
[英]getting IOException “got minus one from a read call” while connecting to oracle 10g database
連接到oracle 10g數據庫時獲取IOException: -
Exception in thread "main" java.sql.SQLException: Io exception: Got minus one from a read call
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:145)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:190)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:363)
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:401)
at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:441)
at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:165)
at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:35)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:839)
at java.sql.DriverManager.getConnection(DriverManager.java:582)
at java.sql.DriverManager.getConnection(DriverManager.java:185)
at com.myapp.struts.DBConnection.getDBConnection(DBConnection.java:21)
at com.myapp.struts.DBConnection.main(DBConnection.java:31)
Java結果:1
我的班級代碼如下: -
package com.myapp.struts;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;
public class DBConnection {
Connection connection = null;
public Connection getDBConnection()throws Exception{
Class.forName("oracle.jdbc.driver.OracleDriver");
System.out.println("OUTPUUT ********driver registered");
connection = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:XE","system","system");
System.out.println("OUTPUUT ********connection established");
return connection;
}
public static void main(String args[])throws Exception{
DBConnection db = new DBConnection();
ResultSet result = null;
String query = "SELECT * FROM admin;";
Connection con = null;
con = db.getDBConnection();
System.out.println("OUTPUUT ********111111111");
Statement st =con.createStatement();
result = (ResultSet) st.executeQuery(query);
while(result.next()){
System.out.println("OUTPUUT ********");
System.out.println(result.getInt(1));
System.out.println(result.getString(2));
System.out.println(result.getString(3));
System.out.println(result.getString(4));
}
con.close();
}
}
還有一件事我正在使用netbeans ide並開發一個struts項目。 在過去的兩天里遇到了這個問題,但尚未得到解決方案。
請幫忙????
如果面臨使用JDBC連接Oracle 10g的問題,請嘗試以下事項:1。關閉機器的Wi-Fi。 2.停止Oracle服務。 3.啟動Oracle服務。 現在嘗試使用JDBC連接DataBase。 問題現在就解決了。
嘗試在查詢結束時刪除分號
String query = "SELECT * FROM admin";
我只是通過將連接URL替換為:connection = DriverManager.getConnection(“jdbc:oracle:thin:@ // 127.0.0.1:1521/XE","system","sy stem”)來解決問題; 感謝大家的支持。
請嘗試使用此網址
"jdbc:oracle:thin:@//localhost:1521/XE"
或者, "jdbc:oracle:thin:@//localhost:1521/xe"
您可能還想嘗試這個來追蹤您的問題 -
暫時刪除以下部分
while(result.next()){ System.out.println("OUTPUUT ********"); System.out.println(result.getInt(1)); System.out.println(result.getString(2)); System.out.println(result.getString(3)); System.out.println(result.getString(4)); }
result.first();
System.out.println(result.getString(1));
是一種反復試驗的答案。
希望這可以幫助。
如果執行數據庫關閉命令,則它將不再允許新連接,並且將出現此錯誤。
我也遇到了同樣的問題,我通過將8080端口替換為1521來解決它問題謝謝大家對我這樣的初學者都做得很好
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