Oracle连接eclipse时字符集报错,求大神解答？

问题描述

在eclpise中连接Oracle数据库报错

相关报错信息

java.lang.NullPointerException
    at java.lang.String.<init>(String.java:166)
    at oracle.sql.CharacterSet.AL32UTF8ToString(CharacterSet.java:1517)
    at oracle.jdbc.driver.DBConversion.CharBytesToString(DBConversion.java:589)
    at oracle.jdbc.driver.DBConversion.CharBytesToString(DBConversion.java:542)
    at oracle.jdbc.driver.T4CTTIoauthenticate.receiveOauth(T4CTTIoauthenticate.java:822)
    at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:362)
    at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:439)
    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:801)
    at java.sql.DriverManager.getConnection(DriverManager.java:664)
    at java.sql.DriverManager.getConnection(DriverManager.java:247)
    at com.itcast.LoginDao.DBHelper.getConnection(DBHelper.java:28)
    at com.itcast.LoginDao.DBHelper.findAll(DBHelper.java:69)
    at com.itcast.LoginDao.UserDao.login(UserDao.java:29)
    at Test.UserDaoTest.testLogin(UserDaoTest.java:20)

查看我的Oracle的字符集编码如下：

注：刚开始项目导入的jar包为ojdbc14.jar,后来移出之后重新导入了ojdbc6.jar仍然是相同的错误

https://blog.csdn.net/weixin_41632656/article/details/79823861