eclipse 链接数据库报错 Unknown initial character set index '255' received from server. Initial client char_gbase unknown character set index for field '12592-优快云博客

本文链接：https://blog.youkuaiyun.com/cool_and_gentle/article/details/89810959

博主在网上查找多种方法，在url地址后添加内容仍报错‘Unknown initial character set index ‘255’ received from server’，后通过更换jar包解决了数据库连接问题，并附上连接数据库的测试代码。

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在网上查了很多方法在url地址后添加在这里插入图片描述仍然报错 Unknown initial character set index ‘255’ received from server. Initial client char
后更换jar包
原来版本的jar包为

更换为

连接成功！

另附连接数据库的测试代码



import java.sql.*;
public class my {
  public static void main(String args[]) {
    try {
      Class.forName("com.mysql.jdbc.Driver");     //加载MYSQL JDBC驱动程序   
      //Class.forName("org.gjt.mm.mysql.Driver");
     System.out.println("Success loading Mysql Driver!");
    }
    catch (Exception e) {
      System.out.print("Error loading Mysql Driver!");
      e.printStackTrace();
    }
    try {
      Connection connect = DriverManager.getConnection(
          "jdbc:mysql://localhost:3306/test?useUnicode=true&amp;characterEncoding=utf8","root","123456");
           //连接URL为   jdbc:mysql//服务器地址/数据库名  ，后面的2个参数分别是登陆用户名和密码

      System.out.println("Success connect Mysql server!");
      Statement stmt = connect.createStatement();
      ResultSet rs = stmt.executeQuery("select * from test");
                                                              //user 为你表的名称
while (rs.next()) {
        System.out.println(rs.getString("name"));
      }
    }
    catch (Exception e) {
      System.out.print("get data error!");
      e.printStackTrace();
    }
  }
  }

啊改了一天终于改出来的成就感特此总结祝大家coding愉快!