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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
连接到oracle 10g数据库时获取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结果:1
我的班级代码如下: -
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();
}
}
还有一件事我正在使用netbeans ide并开发一个struts项目。 在过去的两天里遇到了这个问题,但尚未得到解决方案。
请帮忙????
如果面临使用JDBC连接Oracle 10g的问题,请尝试以下事项:1。关闭机器的Wi-Fi。 2.停止Oracle服务。 3.启动Oracle服务。 现在尝试使用JDBC连接DataBase。 问题现在就解决了。
尝试在查询结束时删除分号
String query = "SELECT * FROM admin";
我只是通过将连接URL替换为:connection = DriverManager.getConnection(“jdbc:oracle:thin:@ // 127.0.0.1:1521/XE","system","sy stem”)来解决问题; 感谢大家的支持。
请尝试使用此网址
"jdbc:oracle:thin:@//localhost:1521/XE"
或者, "jdbc:oracle:thin:@//localhost:1521/xe"
您可能还想尝试这个来追踪您的问题 -
暂时删除以下部分
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));
是一种反复试验的答案。
希望这可以帮助。
如果执行数据库关闭命令,则它将不再允许新连接,并且将出现此错误。
我也遇到了同样的问题,我通过将8080端口替换为1521来解决它问题谢谢大家对我这样的初学者都做得很好
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