psql: 错误: 连接到"127.0.0.1"上的服务器，端口5432失败：致命错误: 用户 "postgres" Password 认证失败

密码不对，需要重置密码

一.先确保环境变量配置正确

path中

L:\myweb\database\pgsql\pgsql\bin

二.修改安装目录里的 data里的pg_hba.conf 文件

# TYPE  DATABASE        USER            ADDRESS                 METHOD

# "local" is for Unix domain socket connections only
local   all             all                                     scram-sha-256
# IPv4 local connections:
host    all             all             127.0.0.1/32            scram-sha-256
# IPv6 local connections:
host    all             all             ::1/128                 scram-sha-256
# Allow replication connections from localhost, by a user with the
# replication privilege.
local   replication     all                                     scram-sha-256
host    replication     all             127.0.0.1/32            scram-sha-256
host    replication     all             ::1/128                 scram-sha-256

改成

# TYPE  DATABASE        USER            ADDRESS                 METHOD

# "local" is for Unix domain socket connections only
local   all             all                                     trust
# IPv4 local connections:
host    all             all             127.0.0.1/32            trust
# IPv6 local connections:
host    all             all             ::1/128                 trust
# Allow replication connections from localhost, by a user with the
# replication privilege.
local   replication     all                                     trust
host    replication     all             127.0.0.1/32            trust
host    replication     all             ::1/128                 trust

三.ctrl + shift + Esc  找到postgresql-x64-17  重新运行服务

四.运行sql shell(psql)

4.1 连接数据库

psql -U postgres

4.2 修改密码

ALTER USER postgres PASSWORD 'new_password';

五.打开pgAdmin并输入新密码

六.把第二步的东西改回去，重启服务