了解神秘的Oracle JDBC错误 - ORA-00911:无效字符 [英] Understanding mysterious Oracle JDBC errors - ORA-00911: invalid character
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问题描述
我正在制作Java 1.6-JDBC-Oracle 11代码。我创建了一个名为employee的表,其中包含id,name和age。我收到错误 - ORA-00911:无效字符。我该如何解决这个问题?
I am making Java 1.6-JDBC-Oracle 11 code. I created a table called employee with id,name and age. I am getting the error - ORA-00911: invalid character. How can I fix this ?
这是我的代码 -
import java.sql.*;
import java.util.Properties;
import java.io.IOException;
import java.io.FileInputStream;
public class HelloOracle {
static String query =
"SELECT emp_id, emp_name, emp_age " +
"FROM employee;";
public static void main(String[] args) {
String username = "";
String password = "";
Properties prop = new Properties();
try {
FileInputStream fis = new FileInputStream("Login.properties");
prop.load(fis);
} catch (IOException ex) {
ex.printStackTrace();
}
username = prop.getProperty("username").trim();
password = prop.getProperty("password").trim();
try {
Connection con = DriverManager.getConnection("jdbc:oracle:thin:@//localhost:1521/xe", username, password);
Statement stmt = con.createStatement();
ResultSet rs = stmt.executeQuery(query);
while (rs.next()) {
System.out.print(rs.getString("emp_id"));
System.out.print(" , ");
System.out.print(rs.getString("emp_name"));
System.out.print(" , ");
System.out.print(rs.getString("emp_age"));
System.out.println();
}
} catch (SQLException e) {
System.out.println("Exception: " + e);
}
}
}
<不幸的是,oracle错误消息不像mysql或mssql那样提供信息,我无法轻易解决它们。我也无法看到哪行代码导致异常。
Unfortunately, oracle error messages are not as informative as mysql or mssql and I am not able to trouble shoot them easily. I am also not able to see which line of code caused the exception.
推荐答案
尝试从你的末尾删除分号SQL语句。
Try removing the semi colon from the end of your SQL statement.
ie
static String query = "SELECT emp_id, emp_name, emp_age " +
"FROM employee"; // no trailing ";" in the SQL
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