使用MySQL客户端连接远程amoeba进行远程控制数据库报错： ``` root@uduntu:~# mysql -u root -P8066 -h 172.18.0.4 -p Enter password: ERROR 2002 (HY000): Can't connect to MySQL server on '172.18.0.4' (115) ``` 求解答？？？？在线等，可进行远程协调 下面是amoeba.xml内容： ``` <?xml version="1.0" encoding="gbk"?> <!DOCTYPE amoeba:configuration SYSTEM "amoeba.dtd"> <amoeba:configuration xmlns:amoeba="http://amoeba.meidusa.com/"> <server> <!-- proxy server绑定的端口 --> <property name="port">8066</property> <!-- proxy server绑定的IP --> <property name="ipAddress">127.0.0.1</property> <!-- proxy server net IO Read thread size --> <property name="readThreadPoolSize">100</property> <!-- proxy server client process thread size --> <property name="clientSideThreadPoolSize">80</property> <!-- mysql server data packet process thread size --> <property name="serverSideThreadPoolSize">100</property> <!-- socket Send and receive BufferSize(unit:K) --> <property name="netBufferSize">100</property> <!-- Enable/disable TCP_NODELAY (disable/enable Nagle's algorithm). --> <property name="tcpNoDelay">false</property> <!-- 对外验证的用户名 --> <property name="user">root</property> <!-- 对外验证的密码 --> <property name="password">redhat</property> </server> <!-- 每个ConnectionManager都将作为一个线程启动。 manager负责Connection IO读写/死亡检测 --> <connectionManagerList> <connectionManager name="defaultManager"> <className>com.meidusa.amoeba.net.AuthingableConnectionManager</className> </connectionManager> </connectionManagerList> <dbServerList> <!-- 一台mysqlServer 需要配置一个pool， 如果多台 平等的mysql需要进行loadBalance， 平台已经提供一个具有负载均衡能力的objectPool：com.meidusa.amoeba.mysql.server.MultipleServerPool 简单的配置是属性加上 virtual="true",该Pool 不允许配置factoryConfig 或者自己写一个ObjectPool。 --> <dbServer name="server1"> <!-- PoolableObjectFactory实现类 --> <factoryConfig> <className>com.meidusa.amoeba.mysql.net.MysqlServerConnectionFactory</className> <property name="manager">defaultManager</property> <!-- 真实mysql数据库端口 --> <property name="port">3306</property> <!-- 真实mysql数据库IP --> <property name="ipAddress">172.18.0.2</property> <property name="schema">test</property> <!-- 用于登陆mysql的用户名 --> <property name="user">jia</property> <!-- 用于登陆mysql的密码 --> <property name="password">redhat</property> </factoryConfig> <!-- ObjectPool实现类 --> <poolConfig> <className>com.meidusa.amoeba.net.poolable.PoolableObjectPool</className> <property name="maxActive">200</property> <property name="maxIdle">200</property> <property name="minIdle">10</property> <property name="minEvictableIdleTimeMillis">600000</property> <property name="timeBetweenEvictionRunsMillis">600000</property> <property name="testOnBorrow">true</property> <property name="testWhileIdle">true</property> </poolConfig> </dbServer> <dbServer name="multiPool" virtual="true"> <poolConfig> <className>com.meidusa.amoeba.server.MultipleServerPool</className> <!-- 负载均衡参数 1=ROUNDROBIN , 2=WEIGHTBASED --> <property name="loadbalance">1</property> <!-- 参与该pool负载均衡的poolName列表以逗号分割 --> <property name="poolNames">server1</property> </poolConfig> </dbServer> </dbServerList> <queryRouter> <className>com.meidusa.amoeba.mysql.parser.MysqlQueryRouter</className> <property name="ruleConfig">${amoeba.home}/conf/rule.xml</property> <property name="functionConfig">${amoeba.home}/conf/functionMap.xml</property> <property name="ruleFunctionConfig">${amoeba.home}/conf/ruleFunctionMap.xml</property> <property name="LRUMapSize">1500</property> <property name="defaultPool">server1</property> <!-- <property name="writePool">server1</property> <property name="readPool">server1</property> --> <property name="needParse">true</property> </queryRouter> </amoeba:configuration> ```

navicat连接显示can't connect to Mysql Server on 'localhost(10061)' 有大神指导怎么解决吗？网上说的多是连接有问题，但是我一直没有找到究竟问题出在了哪里？

ERROR 2003 (HY000): Can't connect to MySQL server on 'localhost' (10013)mysql登陆报这个错怎么办？，有没有大神帮一下啊。

<div class="post-text" itemprop="text"> <p>I'm trying out Azure for the first time. I followed <a href="https://azure.microsoft.com/en-us/documentation/articles/web-sites-php-mysql-deploy-use-ftp/" rel="nofollow">this</a> guide to create a web application with a MySQL database.</p> <p>So the DB node was create and I can see it in my resources and I can view the credentials in the properties. However, I can't connect to it from my desktop.</p> <p>It looks like a firewall issue as I'm unable to telnet to it:</p> <pre><code>telnet us-cdbr-azure-west-c.cloudapp.net 3306 Trying 104.209.43.4... telnet: connect to address 104.209.43.4: Operation timed out telnet: Unable to connect to remote host </code></pre> <p>Can anyone tell me what I'm doing wrong?</p> <p>Thanks in advance.</p> </div>

<div class="post-text" itemprop="text"> <div class="question-status question-originals-of-duplicate"> <p>This question already has an answer here:</p> <ul> <li> <a href="/questions/4448467/cant-connect-to-local-mysql-server-through-socket-var-lib-mysql-mysql-sock" dir="ltr">Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)</a> <span class="question-originals-answer-count"> 32 answers </span> </li> <li> <a href="/questions/11657829/error-2002-hy000-cant-connect-to-local-mysql-server-through-socket-var-run" dir="ltr">ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)</a> <span class="question-originals-answer-count"> 70 answers </span> </li> </ul> </div> <p>I have realized the database on a hosting website and not on the mac using MySQL. I use the database to SignUp/Login in an IOS app. The database is using a PHP code for connecting.</p> <p>This is the PHP code:</p> <pre><code>&lt;?php header('Content-type: application/json'); if($_POST) { $Nome = $_POST['nome']; $Cognome = $_POST['cognome']; $Email = $_POST['email']; $DOB = $_POST['dob']; $password = $_POST['password']; $c_password = $_POST['c_password']; if($_POST['email']) { if ( $password == $c_password ) { $db_name = '****************'; $db_user = '****************'; $db_password = '*********************'; $server_url = 'localhost'; $mysqli = new mysqli('localhost', $db_user, $db_name, $db_password); if (mysqli_connect_errno()) { error_log("Connect failed: " . mysqli_connect_error()); echo '{"success":0,"error_message":"' . mysqli_connect_error() . '"}'; } else { $stmt = $mysqli-&gt;prepare("INSERT INTO Users (nome, cognome, email, dob, password, c_password) VALUES (?, ?, ?, ?, ?, ?)"); $password = md5($password); $stmt-&gt;bind_param('ssssss', $nome, $cognome, $email, $dob, $password, $c_password); $stmt-&gt;execute(); if ($stmt-&gt;error) {error_log("Error: " . $stmt-&gt;error); } $success = $stmt-&gt;affected_rows; $stmt-&gt;close(); $mysqli-&gt;close(); error_log("Success: $success"); if ($success &gt; 0) { error_log("User '$email' created."); echo '{"success":1}'; } else { echo '{"success":0,"error_message":"Email Exist."}'; } } } else { echo '{"success":0,"error_message":"Passwords does not match."}'; } } else { echo '{"success":0,"error_message":"Invalid Email."}'; } }else { echo '{"success":0,"error_message":"Invalid Data."}'; } ?&gt; </code></pre> <p>This is the error that I see when I try my database:</p> <blockquote> <p>(HY000/2002): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2) in <b>/srv/disk8/2129310/www/haer2jkqlgjql.co.nf/signUp.php</b> on line <b>20</b><br></p> </blockquote> <p>This error tells me that there are errors or there is an error in line 20, but I don't understand the reason. </p> </div>

求助各位大佬： 环境：win7，NavicatPremium15，MySQL8.0.19 问题：第一次用Navicat连MySQL，之前都是没用Navicat的。 详细情况： cmd和Windows PowerShell都能连上，密码和账号也没问题 防火墙已关闭 已经设置blind -address=0.0.0.0 尝试重装了两次服务都没有解决 尝试了MySQL5.7也不行 hosts中也没有屏蔽127.0.0.1 #下面是my.ini中的详细配置： ``` [mysql] # 设置mysql客户端默认字符集 default-character-set=utf8 [mysqld] skip-grant-tables #设置3306端口 port = 3306 # 设置mysql的安装目录 basedir=D:\mysql-8.0.19-winx64 # 设置mysql数据库的数据的存放目录 datadir=D:\mysql-8.0.19-winx64\data # 允许最大连接数 max_connections=1000 # 服务端使用的字符集默认为8比特编码的latin1字符集 character-set-server=utf8 # 创建新表时将使用的默认存储引擎 default-storage-engine=INNODB bind-address = 0.0.0.0 explicit_defaults_for_timestamp=true shared-memory skip-grant-tables ``` #下面是错误日志： ``` 2020-03-05T12:53:26.327502Z 0 [System] [MY-013105] [Server] D:\mysql-8.0.19-winx64\bin\mysqld.exe: Normal shutdown. 2020-03-05T12:53:28.981573Z 0 [System] [MY-010910] [Server] D:\mysql-8.0.19-winx64\bin\mysqld.exe: Shutdown complete (mysqld 8.0.19) MySQL Community Server - GPL. 2020-03-05T12:53:39.108646Z 0 [System] [MY-010116] [Server] D:\mysql-8.0.19-winx64\bin\mysqld.exe (mysqld 8.0.19) starting as process 2916 2020-03-05T12:53:39.267199Z 0 [Warning] [MY-013242] [Server] --character-set-server: 'utf8' is currently an alias for the character set UTF8MB3, but will be an alias for UTF8MB4 in a future release. Please consider using UTF8MB4 in order to be unambiguous. 2020-03-05T12:53:47.114670Z 0 [Warning] [MY-010068] [Server] CA certificate ca.pem is self signed. 2020-03-05T12:53:47.324846Z 0 [System] [MY-010931] [Server] D:\mysql-8.0.19-winx64\bin\mysqld.exe: ready for connections. Version: '8.0.19' socket: '' port: 0 MySQL Community Server - GPL. 2020-03-05T12:53:47.591546Z 0 [Warning] [MY-011311] [Server] Plugin mysqlx reported: 'All I/O interfaces are disabled, X Protocol won't be accessible' ``` 各位，知道的帮个忙，谢谢。

用的是MySQL 5.7 有一年多了，在7.18日重新动数据库发现所有都连接不起。 服务启动的： 各种找问题 用命令行可以登进去并查看数据库信息，but用软件连都不行  在此处发现问题     请问这个报错如何解决。 请各位大佬们提提建议！ 谢谢！

``` bool CMySql::connectDB(string host, string user, string pwd, string db_name) { // 函数mysql_real_connect建立一个数据库连接 if (!mysql_real_connect(&mysql, host.c_str(), user.c_str(), pwd.c_str(), db_name.c_str(), 3306, NULL, 0)) { cout << "Connect Error,line: " << __LINE__ << endl; return false; } return true; } ``` 最后linux报错：Connect Error,line: 40 mysql版本：mysql Ver 14.14 Distrib 5.5.62, for debian-linux-gnu (x86_64) using readline 6.3 求问为什么报错？解决方案是什么？

<div class="post-text" itemprop="text"> <p>I try to connect to a mysql database via PHPs mysqli.</p> <pre><code>define('DB_SERVER', '127.0.0.3'); define('DB_USERNAME', '570466'); define('DB_PASSWORD', 'pssst!'); define('DB_NAME', 'db570466'); /* Attempt to connect to MySQL database */ $mysqli = new mysqli(DB_SERVER, DB_USERNAME, DB_PASSWORD, DB_NAME); </code></pre> <p>And get the following error: <code>Warning: mysqli::mysqli(): (HY000/1045): Access denied for user '570466'@'localhost' (using password: YES) in /.../config.php on line 16</code></p> <p>The strange thing is, that Access is denied for my user <code>@localhost</code>, but I don't connect to localhost. According to my hoster (domainFactory), I can also connect to the DB via <code>mysql5.my-domain.tld</code>, but that gives me the same output.</p> <p>What am I missing?</p> </div>

此报错的环境为：Python3.6.6 pychar2018.2 在pychar中编写的书程序如下： from flask_sqlalchemy import SQLAlchemy from flaskapp import app app.config['SQLALCHEMY_DATABASE_URI'] = 'mysql+pymsql://root:111111@127.0.0.1:3306/test' app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = True db = SQLAlchemy(app) class Role(db.Model): __tablename__ ='roles' id = db.Column(db.Integer,primary_key=True,autoincrement=True,nullable=False) name = db.Column(db.String(32),unique=True,nullable=False) if __name__ == '__main__': #创建一个roles表 db.create_all() 但是在运行后报的错误为：sqlalchemy.exc.NoSuchModuleError: Can't load plugin: sqlalchemy.dialects:mysql.pymsql 在网上查询相关错误解决方法后，表示没有安装mysql驱动，但是有的帖子说在Python2.7后不用mysql-python。这个环境中已经安装了pymysql。 但是在安装mysql-Python时报如下错误：  请问各位大声该如何结局，谢谢！ 如能解决我会多付80c币

<div class="post-text" itemprop="text"> <div class="question-status question-originals-of-duplicate"> <p>这个问题已经有了答案：</p> <ul> <li> <a href="/questions/2182919/cant-connect-to-local-mysql-server-through-socket" dir="ltr">无法通过socket连接到本地 MySQL 服务器？</a> <span class="question-originals-answer-count"> 2 answers </span> </li> </ul> </div> <p>当我浏览网站时一切正常，该网站与数据库连接并显示结果。然而，每当遇到 mysql resl escape 字符串时，我都会得到这个错误：</p> <blockquote> <p>mysql_real_escape_string() [function.mysql-real-escape-string]: Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2) in......</p> </blockquote> <p>请注意，网站运行良好，只要我删除 mysql_real_escape_string。但我还是想搞明白哪个细节出了问题？</p>

<div class="post-text" itemprop="text"> <p>As wrote on the title I have this issue. I have the data that allows me to connect to my database stored in a file. After getting those infos I tried to establish a communication with the database but I receive the warning </p> <blockquote> <p>Warning: mysql_connect(): php_network_getaddresses: getaddrinfo failed: No such host is known. in C:\wamp\www\jstool\connect.php on line 21</p> </blockquote> <p>twice and the result of the connect is nothing even if the values are correct (a.k.a. if I tried the connect writing down the values it works). Here's the txt file:</p> <pre><code>localhost root pwd </code></pre> <p>Here's the code:</p> <pre><code>ini_set("auto_detect_line_endings", true); $handle = fopen("config.txt", "r"); if ($handle) { $i=0; while (($line = fgets($handle)) !== false) { $ln[$i]= $line; $i++; } } define("SERVER", $ln[0]); define("USER", $ln[1]); define("PASSWORD", $ln[2]); $db = mysql_connect(SERVER,USER,PASSWORD); if (!$db) { [...] } else { [.. reach database ..] } </code></pre> <p>if i simply write </p> <pre><code>$db = mysql_connect("localhost", "root", "pwd"); </code></pre> <p>which as you can see are the values contained in the txt file, it works fine.</p> </div>

``` <?php //设置编码格式 header("Content-type:text/html;charset=utf-8"); //定义数据库主机地址 $host="localhost"; //定义mysql数据库登录用户名 $user="root"; //定义mysql数据库登录密码 $pwd="root"; //链接数据库 $conn = mysql_connect($host,$user,$pwd); //对连接进行判断 if(!$conn){ die("数据库连接失败！".mysql_errno()); }else{ echo "数据库连接成功！"; } // phpinfo() ?> ``` 报的错： Fatal error: Uncaught Error: Call to undefined function mysql_connect() in /opt/lampp/htdocs/shopimooc/index.php:15 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/shopimooc/index.php on line 15 试了好多方法都没有用 T T， 哪位好心人帮帮忙 环境是 mac

求助各位大佬： 环境：win7，NavicatPremium15，MySQL8.0.19 问题：第一次用Navicat连MySQL，之前都是没用Navicat的。 详细情况： * cmd和Windows PowerShell都能连上，密码和账号也没问题 * 防火墙已关闭 * 已经设置blind -address=0.0.0.0 * 尝试重装了两次服务都没有解决 * hosts中也没有屏蔽127.0.0.1 *下面是my.ini中的详细配置： ``` [mysql] # 设置mysql客户端默认字符集 default-character-set=utf8 [mysqld] skip-grant-tables #设置3306端口 port = 3306 # 设置mysql的安装目录 basedir=D:\mysql-8.0.19-winx64 # 设置mysql数据库的数据的存放目录 datadir=D:\mysql-8.0.19-winx64\data # 允许最大连接数 max_connections=1000 # 服务端使用的字符集默认为8比特编码的latin1字符集 character-set-server=utf8 # 创建新表时将使用的默认存储引擎 default-storage-engine=INNODB bind-address = 0.0.0.0 explicit_defaults_for_timestamp=true shared-memory skip-grant-tables ``` *下面是错误日志 ``` 2020-03-05T12:53:26.327502Z 0 [System] [MY-013105] [Server] D:\mysql-8.0.19-winx64\bin\mysqld.exe: Normal shutdown. 2020-03-05T12:53:28.981573Z 0 [System] [MY-010910] [Server] D:\mysql-8.0.19-winx64\bin\mysqld.exe: Shutdown complete (mysqld 8.0.19) MySQL Community Server - GPL. 2020-03-05T12:53:39.108646Z 0 [System] [MY-010116] [Server] D:\mysql-8.0.19-winx64\bin\mysqld.exe (mysqld 8.0.19) starting as process 2916 2020-03-05T12:53:39.267199Z 0 [Warning] [MY-013242] [Server] --character-set-server: 'utf8' is currently an alias for the character set UTF8MB3, but will be an alias for UTF8MB4 in a future release. Please consider using UTF8MB4 in order to be unambiguous. 2020-03-05T12:53:47.114670Z 0 [Warning] [MY-010068] [Server] CA certificate ca.pem is self signed. 2020-03-05T12:53:47.324846Z 0 [System] [MY-010931] [Server] D:\mysql-8.0.19-winx64\bin\mysqld.exe: ready for connections. Version: '8.0.19' socket: '' port: 0 MySQL Community Server - GPL. 2020-03-05T12:53:47.591546Z 0 [Warning] [MY-011311] [Server] Plugin mysqlx reported: 'All I/O interfaces are disabled, X Protocol won't be accessible' ``` 麻烦知道的告诉一下解决办法

<div class="post-text" itemprop="text"> <p>I get this error message </p> <blockquote> <p>Access denied for user 'user'@'localhost' (using password: YES)</p> </blockquote> <p>I tried to access with the root, the admin account and some user account I made for the web visitors with a few privileges. Those users (admin and web user) were created with cPanel.</p> <p>I'm testing the connection with this simple code to avoid making a mess with functional code.</p> <pre><code>&lt;?php $con = mysql_connect("localhost","root",""); if (!$con) { die('Could not connect: ' . mysql_error()); } ?&gt; </code></pre> <p>I stumbled with this explanation but it doesn't work either</p> <blockquote> <p>Your cPanel username and password can be used to connect to your databases (as well as your cPanel). If you're connecting to your database using your cPanel username and password, you can reset your cPanel password to ensure you are using the correct username and password.</p> <p>If you setup a MySQL username and password specifically for accessing a database, you'll want to ensure you are using the correct username in your php scripts. For example, MySQL usernames are always in this format:</p> <p>cpanel-username_mysql-username</p> <p>If your cPanel username is userna5 and you created a database username of dbuser1, then the actual database username would be:</p> <p>userna5_dbuser1</p> </blockquote> <p>Edit: i already assigned the users to a database and their privileges. I'm working on a remote server</p> </div>

kettle连接mysql数据库一直失败 mysql是5.7版本 kettle 7.0 尝试换了很多jar包都不行 网上各种方法都没办法解决 求大神帮看看 问题如下：  错误连接数据库 [test1] : org.pentaho.di.core.exception.KettleDatabaseException: Error occurred while trying to connect to the database Error connecting to database: (using class org.gjt.mm.mysql.Driver) Access denied for user 'root'@'192.168.1.103' to database 'mysqlzsj' org.pentaho.di.core.exception.KettleDatabaseException: Error occurred while trying to connect to the database Error connecting to database: (using class org.gjt.mm.mysql.Driver) Access denied for user 'root'@'192.168.1.103' to database 'mysqlzsj' at org.pentaho.di.core.database.Database.normalConnect(Database.java:472) at org.pentaho.di.core.database.Database.connect(Database.java:370) at org.pentaho.di.core.database.Database.connect(Database.java:341) at org.pentaho.di.core.database.Database.connect(Database.java:331) at org.pentaho.di.core.database.DatabaseFactory.getConnectionTestReport(DatabaseFactory.java:80) at org.pentaho.di.core.database.DatabaseMeta.testConnection(DatabaseMeta.java:2783) at org.pentaho.ui.database.event.DataHandler.testDatabaseConnection(DataHandler.java:597) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.pentaho.ui.xul.impl.AbstractXulDomContainer.invoke(AbstractXulDomContainer.java:313) at org.pentaho.ui.xul.impl.AbstractXulComponent.invoke(AbstractXulComponent.java:157) at org.pentaho.ui.xul.impl.AbstractXulComponent.invoke(AbstractXulComponent.java:141) at org.pentaho.ui.xul.swt.tags.SwtButton.access$500(SwtButton.java:43) at org.pentaho.ui.xul.swt.tags.SwtButton$4.widgetSelected(SwtButton.java:137) at org.eclipse.swt.widgets.TypedListener.handleEvent(Unknown Source) at org.eclipse.swt.widgets.EventTable.sendEvent(Unknown Source) at org.eclipse.swt.widgets.Display.sendEvent(Unknown Source) at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source) at org.eclipse.swt.widgets.Display.runDeferredEvents(Unknown Source) at org.eclipse.swt.widgets.Display.readAndDispatch(Unknown Source) at org.eclipse.jface.window.Window.runEventLoop(Window.java:820) at org.eclipse.jface.window.Window.open(Window.java:796) at org.pentaho.di.ui.xul.KettleDialog.show(KettleDialog.java:80) at org.pentaho.di.ui.xul.KettleDialog.show(KettleDialog.java:47) at org.pentaho.di.ui.core.database.dialog.XulDatabaseDialog.open(XulDatabaseDialog.java:116) at org.pentaho.di.ui.core.database.dialog.DatabaseDialog.open(DatabaseDialog.java:60) at org.pentaho.di.ui.spoon.delegates.SpoonDBDelegate.newConnection(SpoonDBDelegate.java:485) at org.pentaho.di.ui.spoon.delegates.SpoonDBDelegate.newConnection(SpoonDBDelegate.java:472) at org.pentaho.di.ui.spoon.Spoon.doubleClickedInTree(Spoon.java:3073) at org.pentaho.di.ui.spoon.Spoon.doubleClickedInTree(Spoon.java:3043) at org.pentaho.di.ui.spoon.Spoon.access$2300(Spoon.java:361) at org.pentaho.di.ui.spoon.Spoon$26.widgetDefaultSelected(Spoon.java:6184) at org.eclipse.swt.widgets.TypedListener.handleEvent(Unknown Source) at org.eclipse.swt.widgets.EventTable.sendEvent(Unknown Source) at org.eclipse.swt.widgets.Display.sendEvent(Unknown Source) at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source) at org.eclipse.swt.widgets.Display.runDeferredEvents(Unknown Source) at org.eclipse.swt.widgets.Display.readAndDispatch(Unknown Source) at org.pentaho.di.ui.spoon.Spoon.readAndDispatch(Spoon.java:1366) at org.pentaho.di.ui.spoon.Spoon.waitForDispose(Spoon.java:8022) at org.pentaho.di.ui.spoon.Spoon.start(Spoon.java:9277) at org.pentaho.di.ui.spoon.Spoon.main(Spoon.java:692) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.pentaho.commons.launcher.Launcher.main(Launcher.java:92) Caused by: org.pentaho.di.core.exception.KettleDatabaseException: Error connecting to database: (using class org.gjt.mm.mysql.Driver) Access denied for user 'root'@'192.168.1.103' to database 'mysqlzsj' at org.pentaho.di.core.database.Database.connectUsingClass(Database.java:585) at org.pentaho.di.core.database.Database.normalConnect(Database.java:456) ... 48 more Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Access denied for user 'root'@'192.168.1.103' to database 'mysqlzsj' at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.jdbc.Util.handleNewInstance(Util.java:395) at com.mysql.jdbc.Util.getInstance(Util.java:370) at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1038) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4190) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4122) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:927) at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1709) at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1252) at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2470) at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2503) at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2288) at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:818) at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:31) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.jdbc.Util.handleNewInstance(Util.java:395) at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:400) at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:346) at java.sql.DriverManager.getConnection(DriverManager.java:664) at java.sql.DriverManager.getConnection(DriverManager.java:247) at org.pentaho.di.core.database.Database.connectUsingClass(Database.java:567) ... 49 more 主机名 : DESKTOP-FKLDHDK 端口 : 3306 数据库名:MySQLZsj

直接上代码： using MySQLDriverCS; private void button1_Click(object sender, EventArgs e) { string conn, query = null; DataSet myds; //conn = "Data Source=localhost;User Id=root;Password=123456;Database=test"; //conn = "server=localhost;uid=root;pwd=123456;database=test"; query = "select * from test1"; MySQLConnection sqlconn = new MySQLConnection(conn); MySQLDataAdapter adapter = new MySQLDataAdapter(); sqlconn.Open(); adapter.SelectCommand = new MySQLCommand(query, sqlconn); myds = new DataSet(); adapter.Fill(myds, "test1"); bindingSource1.DataSource = myds.Tables["test1"]; dataGridView1.DataSource = bindingSource1; sqlconn.Close(); } 其中注释掉的两行conn是我参照网上写的两种连接信息，但都不对 尝试第一行conn报错： MySQLDriverCS Exception: MySQLDriverCS Error: can't connect.Unknown database 'localhost' 尝试第二行conn报错： MySQLDriverCS Exception: MySQLDriverCS Error: can't connect.Access denied for user 'ODBC'@'localhost' (using password: NO) 我的mysql中test数据库test1表都没问题，使用mysql命令行可以正常浏览。 基本上把网上能找到的链接mysql数据源的方法都试过了，都失败了，各位大神看一下，到底是连接信息错误还是我整个方法都有问题，如果有应该怎么修改？谢谢。

<div class="post-text" itemprop="text"> <p>I am using Amazon EC2 with Amazon RDS.</p> <p>I have successfully created database and uploaded code to amazon using Elastic Beanstalk. Now I want to import my local databse data to RDS databse. I surf and found that by <code>mysql command</code> we can do that so I do this</p> <pre><code>D:\wamp\bin\mysql\mysql5.5.8\bin&gt;mysql --host=myinstances.aa23swersdf.us-east-1.rds.amazonaws.com --user=username --pass=password --port=3306 dbname &lt; locahost.sql </code></pre> <p>But it throws this error :</p> <pre><code>ERROR 2003 (HY000): Can't connect to MySQL server on 'myinstances.aa23swersdf.us-east-1.rds.amazonaws.com' (10060) </code></pre> <p>How can I solve it?</p> <p>I have do this by cmd on windows.</p> </div>

<div class="post-text" itemprop="text"> <p>I have to build an android app which connects to a remote MYSQL webserver and retrieve information for display purpose. So I did research coz I had no idea where to start. I read an article it mentions the better approach for that is to use php script. And didn’t know anything about how server, database and php works, so I studied php from here “<a href="http://www.homeandlearn.co.uk/php/php12p1.html" rel="nofollow">http://www.homeandlearn.co.uk/php/php12p1.html</a>” to understand and downloaded WhampServer to do some testing. On local machine everything worked fine. But main thing I don’t understand is “HOW TO CONNECT TO REMOTE SERVER/DATABASE”. It’s obvious that I’m doing something really stupid, I just need help to find out what am I doing wrong. When we test php script on local machine in webrowse we use "localhost/some.php." But when I want to test same php script on remoter server from my local machine then what and how should I do? Do I need to make some changes in configuration file on server side? I have done more research before asking this question here to understand remote server connection in php but I still don’t understand. I have gone through almost all the pages within the link below: <a href="https://www.google.co.uk/search?q=connect+to+remote+mysql+webserver+php&amp;rlz=1C1AVSX_enGB447GB448&amp;oq=connect+to+remote+mysql+webserver+php&amp;aqs=chrome.0.69i57j69i62l3.19724j0&amp;sourceid=chrome&amp;ie=UTF-8#fp=5a2359cf96dc5f79&amp;q=how+to+connect+to+remote+mysql+web+server+php" rel="nofollow">https://www.google.co.uk/search?q=connect+to+remote+mysql+webserver+php&amp;rlz=1C1AVSX_enGB447GB448&amp;oq=connect+to+remote+mysql+webserver+php&amp;aqs=chrome.0.69i57j69i62l3.19724j0&amp;sourceid=chrome&amp;ie=UTF-8#fp=5a2359cf96dc5f79&amp;q=how+to+connect+to+remote+mysql+web+server+php</a> </p> <p>And help would be much appreciated. If my question is not clear please let me know I'll try to explain more. or think of it as if you have to connect to a remote MySQL server how would you do , means what is the process and steps involved in that. Thanks everyone.</p> <p>Edit </p> <p>I have created a database "dealt3_raj_test" on remote server. and when I type "examplewebserver.CO.UK/myphpscriptname" in my web browser. It gives me error "An error occurred , You have reached the error page"</p> <pre><code>&lt;?PHP $user_name = "dealt3_raj"; $password = "5dN5nh&amp;eMd(vCR$dzk"; $database = "dealt3_raj_test"; $server = "examplewebserver.CO.UK"; $db_handle = mysql_connect($server, $user_name, $password); $db_found = mysql_select_db($database, $db_handle); if($db_handle) { print "Connected"; } else { print "Can not connect to server"; } if ($db_found) { print "DataBase found"; } else { print "DataBase not found"; } ?&gt; </code></pre> </div>

今年，我也32了 ，为了不给大家误导，咨询了猎头、圈内好友，以及年过35岁的几位老程序员……舍了老脸去揭人家伤疤……希望能给大家以帮助，记得帮我点赞哦。 目录： 你以为的人生 一次又一次的伤害 猎头界的真相 如何应对互联网行业的「中年危机」 一、你以为的人生 刚入行时，拿着傲人的工资，想着好好干，以为我们的人生是这样的： 等真到了那一天，你会发现，你的人生很可能是这样的： ...

在工作中，我们误删数据或者数据库，我们一定需要跑路吗？我看未必，程序员一定要学会自救，神不知鬼不觉的将数据找回。 在 mysql 数据库中，我们知道 binlog 日志记录了我们对数据库的所有操作，所以 binlog 日志就是我们自救的利器。 接下来就来开启程序员自救之路。 想要自救成功，binlog 这把利器一定要好，在自己之前，我们一定要确定我们有 binlog 这把利器，以下就是确保有 bi...

跳槽几乎是每个人职业生涯的一部分，很多HR说“三年两跳”已经是一个跳槽频繁与否的阈值了，可为什么市面上有很多程序员不到一年就跳槽呢？他们不担心影响履历吗？ PayScale之前发布的**《员工最短任期公司排行榜》中，两家码农大厂Amazon和Google**，以1年和1.1年的员工任期中位数分列第二、第四名。 PayScale:员工最短任期公司排行榜 意外的是，任期中位数极小的这两家公司，薪资...

数据结构与算法思维导图

昨天早上通过远程的方式 review 了两名新来同事的代码，大部分代码都写得很漂亮，严谨的同时注释也很到位，这令我非常满意。但当我看到他们当中有一个人写的 switch 语句时，还是忍不住破口大骂：“我擦，小王，你丫写的 switch 语句也太老土了吧！” 来看看小王写的代码吧，看完不要骂我装逼啊。 private static String createPlayer(PlayerTypes p...

华为面试整体流程大致分为笔试，性格测试，面试，综合面试，回学校等结果。笔试来说，华为的难度较中等，选择题难度和网易腾讯差不多。最后的代码题，相比下来就简单很多，一共3道题目，前2题很容易就AC，题目已经记不太清楚，不过难度确实不大。最后一题最后提交的代码过了75%的样例，一直没有发现剩下的25%可能存在什么坑。 笔试部分太久远，我就不怎么回忆了。直接将面试。 面试 如果说腾讯的面试是挥金如土...

互联网公司工作，很难避免不和黑客们打交道，我呆过的两家互联网公司，几乎每月每天每分钟都有黑客在公司网站上扫描。有的是寻找 Sql 注入的缺口，有的是寻找线上服务器可能存在的漏洞，大部分都...

loonggg读完需要3分钟速读仅需 1 分钟大家好，我是你们的校长。我之前讲过，这年头，只要肯动脑，肯行动，程序员凭借自己的技术，赚钱的方式还是有很多种的。仅仅靠在公司出卖自己的劳动时...

最近有个老铁，告诉我说，上班一个月，后悔当初着急入职现在公司了。他之前在美图做手机研发，今年美图那边今年也有一波组织优化调整，他是其中一个，在协商离职后，当时捉急找工作上班，因为有房贷供着，不能没有收入来源。所以匆忙选了一家公司，实际上是一个大型外包公司，主要派遣给其他手机厂商做外包项目。**当时承诺待遇还不错，所以就立马入职去上班了。但是后面入职后，发现薪酬待遇这块并不是HR所说那样，那个HR自...

昨天看到一档综艺节目，讨论了两个话题：（1）中国学生的数学成绩，平均下来看，会比国外好？为什么？（2）男生的数学成绩，平均下来看，会比女生好？为什么？同时，我又联想到了一个技术圈经常讨...

提到“程序员”，多数人脑海里首先想到的大约是：为人木讷、薪水超高、工作枯燥…… 然而，当离开工作岗位，撕去层层标签，脱下“程序员”这身外套，有的人生动又有趣，马上展现出了完全不同的A/B面人生！ 不论是简单的爱好，还是正经的副业，他们都干得同样出色。偶尔，还能和程序员的特质结合，产生奇妙的“化学反应”。 @Charlotte：平日素颜示人，周末美妆博主 大家都以为程序媛也个个不修边幅，但我们也许...

文章目录数据库基础知识为什么要使用数据库什么是SQL？什么是MySQL?数据库三大范式是什么mysql有关权限的表都有哪几个MySQL的binlog有有几种录入格式？分别有什么区别？数据类型mysql有哪些数据类型引擎MySQL存储引擎MyISAM与InnoDB区别MyISAM索引与InnoDB索引的区别？InnoDB引擎的4大特性存储引擎选择索引什么是索引？索引有哪些优缺点？索引使用场景（重点）...

有个好朋友ZS，是技术总监，昨天问我：“有一个老下属，跟了我很多年，做事勤勤恳恳，主动性也很好。但随着公司的发展，他的进步速度，跟不上团队的步伐了，有点...

私下里，有不少读者问我：“二哥，如何才能写出一份专业的技术简历呢？我总感觉自己写的简历太烂了，所以投了无数份，都石沉大海了。”说实话，我自己好多年没有写过简历了，但我认识的一个同行，他在阿里，给我说了一些他当年写简历的方法论，我感觉太牛逼了，实在是忍不住，就分享了出来，希望能够帮助到你。 01、简历的本质 作为简历的撰写者，你必须要搞清楚一点，简历的本质是什么，它就是为了来销售你的价值主张的。往深...

今天给你们讲述一个外包程序员的幸福生活。男主是Z哥，不是在外包公司上班的那种，是一名自由职业者，接外包项目自己干。接下来讲的都是真人真事。 先给大家介绍一下男主，Z哥，老程序员，是我十多年前的老同事，技术大牛，当过CTO，也创过业。因为我俩都爱好喝酒、踢球，再加上住的距离不算远，所以一直也断断续续的联系着，我对Z哥的状况也有大概了解。 Z哥几年前创业失败，后来他开始干起了外包，利用自己的技术能...

作者 |Charles R. Martin译者 | 弯月，责编 | 夕颜头图 |付费下载自视觉中国出品 | CSDN（ID:CSDNnews）新手...

如果世界上都是这种不思进取的软件公司，那别说大部分程序员只会写 3 年代码，恐怕就没有程序员这种职业。

有小伙伴问松哥这个问题，他在上海某公司，在离职了几个月后，前公司的领导联系到他，希望他能够返聘回去，他很纠结要不要回去？ 俗话说好马不吃回头草，但是这个小伙伴既然感到纠结了，我觉得至少说明了两个问题：1.曾经的公司还不错；2.现在的日子也不是很如意。否则应该就不会纠结了。 老实说，松哥之前也有过类似的经历，今天就来和小伙伴们聊聊回头草到底吃不吃。 首先一个基本观点，就是离职了也没必要和老东家弄的苦...

面试官问HTTP与HTTPS的区别，我这样回答让他竖起大拇指！

虽然大公司并不是人人都能进，但我仍建议还未毕业的同学，尽力地通过校招向大公司挤，但凡挤进去，你这一生会容易很多。 大公司哪里好？没能进大公司怎么办？答案都在这里了,记得帮我点赞哦。 目录： 技术氛围 内部晋升与跳槽 啥也没学会，公司倒闭了？ 不同的人脉圈，注定会有不同的结果 没能去大厂怎么办？ 一、技术氛围 纵观整个程序员技术领域，哪个在行业有所名气的大牛，不是在大厂? 而且众所...

往往，我们看不进去大段大段的逻辑。深刻的哲理，往往短而精悍，一阵见血。问：产品经理挺漂亮的，有点心动，但不知道合不合得来。男生更看重女生的身材脸蛋，还是...

本文作者用对比非常鲜明的两个开发团队的故事，讲解了敏捷开发之道 —— 如果你的团队缺乏统一标准的环境，那么即使勤劳努力，不仅会极其耗时而且成果甚微，使用...

二哥，有个事想询问下您的意见，您觉得应届生值得去外包吗？公司虽然挺大的，中xx，但待遇感觉挺低，马上要报到，挺纠结的。

当HR压你价，说你只值7K时，你可以流畅地回答，记住，是流畅，不能犹豫。 礼貌地说：“7K是吗？了解了。嗯~其实我对贵司的面试官印象很好。只不过，现在我的手头上已经有一份11K的offer。来面试，主要也是自己对贵司挺有兴趣的，所以过来看看……”（未完） 这段话主要是陪HR互诈的同时，从公司兴趣，公司职员印象上，都给予对方正面的肯定，既能提升HR的好感度，又能让谈判气氛融洽，为后面的发挥留足空间。...

面试阿里p7被问到的问题(当时我只知道第一个)：@Conditional是做什么的?@Conditional多个条件是什么逻辑关系？条件判断在什么时候执...

终于懂了TCP和UDP协议区别

编程语言层出不穷，从最初的机器语言到如今2500种以上的高级语言，程序员们大呼“学到头秃”。程序员一边面临编程语言不断推陈出新，一边面临由于许多代码已存在，程序员编写新应用程序时存在重复“搬砖”的现象。 无代码/低代码编程应运而生。无代码/低代码是一种创建应用的方法，它可以让开发者使用最少的编码知识来快速开发应用程序。开发者通过图形界面中，可视化建模来组装和配置应用程序。这样一来，开发者直...

最近面试了一个31岁8年经验的程序猿，让我有点感慨，大龄程序猿该何去何从。

说实话，自己的算法，我一个不会，太难了吧

已经连续五年参加大厂校招、社招的技术面试工作，简历看的不下于万份 这篇文章会用实例告诉你，什么是差的程序员简历！ 疫情快要结束了，各个公司也都开始春招了，作为即将红遍大江南北的新晋UP主，那当然要为小伙伴们做点事（手动狗头）。 就在公众号里公开征简历，义务帮大家看，并一一点评。《启舰：春招在即，义务帮大家看看简历吧》 一石激起千层浪，三天收到两百多封简历。 花光了两个星期的所有空闲时...