我想用发送者的名字显示消息。外部的while循环工作正常，但内部的while循环有一些问题。我已经试了很多方法，但没有结果。有人能帮助我吗？我会非常感谢。

package db;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;
import java.util.Scanner;
public class Messages extends Login {
    static Scanner in = new Scanner(System.in);
public static void main(String args[]) throws Exception{
    boolean isLoggedin = login();
    String msg = "";
    String senName = "";
    if(isLoggedin) {
        Class.forName("com.mysql.jdbc.Driver");
        Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/demo?verifyServerCertificate=false&useSSL=false", "root", "");
        Statement st = con.createStatement();
        Statement st1 = con.createStatement();
        ResultSet rs = st.executeQuery("SELECT * FROM chat");
        ResultSet rs1 = st1.executeQuery("SELECT * FROM data");
        while(rs.next()) {
            int dbRecID = rs.getInt("reciever_id");
            if(dbRecID == user_id) {
                msg = rs.getString("message");
                int dbSenID = rs.getInt("sender_id");
                while(rs1.next()) {
                    int senID = rs1.getInt("id");
                    if(senID == dbSenID) {
                        senName = rs1.getString("name");
                    }
                }
                System.out.println(senName+" sent you a message: "+msg);
            }
        }
    }
    else {
        System.out.print("Login Unsuccessful");
    }
}
}

字符串

输出

Ali Ahmed sent you a message: How are you?
Ali Ahmed sent you a message: Hi!

型

所需输出

Ali Ahmed sent you a message: How are you?
Hamza sent you a message: Hi!

型