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在CentOS操作系統(tǒng)上安裝和配置JDK有以下三種方法： 1. 使用命令行安裝：通過(guò)使用命令行工具yum，可以直接從官方源中安裝OpenJDK。首先，更新軟件包列表：`sudo yum update`，然后安裝JDK： `sudo yum install java-1.8.0-openjdk-devel` 安裝完成后，可以通過(guò)運(yùn)行`java -version`命令驗(yàn)證安裝是否成功。 2. 從Oracle官網(wǎng)下載安裝：訪問(wèn)Oracle官方網(wǎng)站，并下載所需版本的JDK。然后在終端中運(yùn)行以下命令解壓文件：`tar -xvf jdk-8u261-linux-x64.tar.gz`。接下來(lái)，將解壓得到的文件夾移動(dòng)到/usr/java目錄中：`sudo mv jdk1.8.0_261 /usr/java/`。然后配置環(huán)境變量：`sudo vi /etc/profile`，在文件末尾添加以下內(nèi)容： ``` export JAVA_HOME=/usr/java/jdk1.8.0_261 export PATH=$JAVA_HOME/bin:$PATH ``` 保存并退出，然后運(yùn)行`source /etc/profile`使環(huán)境變量生效。 3. 使用包管理工具安裝：有時(shí)候，操作系統(tǒng)的默認(rèn)軟件源中可能沒(méi)有最新版本的JDK。這種情況下，可以使用包管理工具，如sdkman或JEnv來(lái)安裝和管理多個(gè)版本的JDK。首先，安裝相應(yīng)的包管理工具，然后使用工具提供的命令來(lái)安裝所需的JDK版本。例如，使用sdkman安裝JDK 1.8.0： ``` curl -s "https://get.sdkman.io" | bash source "$HOME/.sdkman/bin/sdkman-init.sh" sdk install java 8.0.265-zulu ``` 安裝完成后，使用命令`sdk use java 8.0.265-zulu`來(lái)切換使用的JDK版本。以上是在CentOS操作系統(tǒng)下安裝和配置JDK的三種方法。根據(jù)個(gè)人需求選擇適合的方法進(jìn)行安裝。

Public @ 2023-06-28 20:00:30

保留數(shù)據(jù)重裝后sqlserver數(shù)據(jù)庫(kù)不能啟動(dòng)（sql2008,sql2012）

最近有很多用戶反饋重裝為預(yù)裝sqlserver模板的系統(tǒng)，sqlserver不能正常啟動(dòng)，經(jīng)核實(shí)大部分都是用戶保留數(shù)據(jù)重裝更換另外模板的windows系統(tǒng)的原因。由于數(shù)據(jù)庫(kù)安裝在D盤(pán)，有些模板是沒(méi)有安裝sqlserver數(shù)據(jù)庫(kù)的，重裝前D盤(pán)并沒(méi)有對(duì)應(yīng)sqlserver版本的數(shù)據(jù)，而保留數(shù)據(jù)重裝D盤(pán)的數(shù)據(jù)不會(huì)被替換，所以數(shù)據(jù)庫(kù)不能啟動(dòng)。以下是處理方法處理前請(qǐng)先注意以下事項(xiàng)：1、如果【D:\Progr

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快云服務(wù)器系統(tǒng)盤(pán)擴(kuò)容教程(CentOS系統(tǒng))

原始狀態(tài)查看1. 安裝parted分區(qū)工具yum -y install parted2. 查看原始信息lsblk001.png3.關(guān)機(jī)poweroff系統(tǒng)盤(pán)擴(kuò)展兩種方式方式一：直接分區(qū)方式1.安裝工具yum -y install cloud-utils-growpart2.查看分區(qū)lsblk002.png3. 擴(kuò)展分區(qū)growpart /dev/vda 2重啟4.分區(qū)格式擴(kuò)展xfs格式xfs_gr

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CentOS操作系統(tǒng)下安裝配置JDK的三種方法

威海服務(wù)器/VPS 威海CentOS
1405

在CentOS操作系統(tǒng)下，可以通過(guò)以下三種方法來(lái)安裝配置JDK： 1. 使用YUM軟件包管理器安裝JDK： - 打開(kāi)終端，運(yùn)行以下命令來(lái)查找可用的JDK軟件包：`yum search java | grep jdk` - 根據(jù)搜索結(jié)果選擇要安裝的JDK版本，運(yùn)行以下命令安裝：`sudo yum install -y ` - 安裝完成后，可以通過(guò)運(yùn)行`java -version`

Public @ 2023-07-23 03:50:38

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[ DB ] CONNECT:[ UseTime:0.026521s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_article` [ RunTime:0.018973s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 9556 LIMIT 1 [ RunTime:0.017963s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'const', 'possible_keys' => 'PRIMARY', 'key' => 'PRIMARY', 'key_len' => '4', 'ref' => 'const', 'rows' => 1, 'extra' => NULL, ) ]
[ SQL ] select * from `ob_article_tongji` where category_id=12 and mark_type='cate' order by times desc limit 15 [ RunTime:0.018150s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article_tongji', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 608, 'extra' => 'Using where; Using filesort', ) ]
[ SQL ] select * from `ob_article_tongji` where category_id=12 and mark_type='tags' order by times desc limit 100 [ RunTime:0.018305s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article_tongji', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 608, 'extra' => 'Using where; Using filesort', ) ]
[ SQL ] select * from `ob_article_tongji` where category_id=12 and mark_type='tags' order by rand() limit 30 [ RunTime:0.018742s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article_tongji', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 608, 'extra' => 'Using where; Using temporary; Using filesort', ) ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 9556 LIMIT 1 [ RunTime:0.017843s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'const', 'possible_keys' => 'PRIMARY', 'key' => 'PRIMARY', 'key_len' => '4', 'ref' => 'const', 'rows' => 1, 'extra' => NULL, ) ]
[ SQL ] update `ob_article` set views=views+2 where id=9556 [ RunTime:0.018739s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `cate` = '威海服務(wù)器/VPS' AND `status` <> -1 LIMIT 1 [ RunTime:0.024792s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 8035, 'extra' => 'Using where', ) ]
[ SQL ] SELECT * FROM `ob_article` WHERE `category_id` = 12 AND `cate` = '威海服務(wù)器/VPS' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.038275s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 8035, 'extra' => 'Using where; Using temporary; Using filesort', ) ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `tags` = '威海CentOS' AND `status` <> -1 LIMIT 1 [ RunTime:0.024995s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 8035, 'extra' => 'Using where', ) ]
[ SQL ] SELECT * FROM `ob_article` WHERE `category_id` = 12 AND `tags` = '威海CentOS' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.034104s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 8035, 'extra' => 'Using where; Using temporary; Using filesort', ) ]

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CentOS操作系統(tǒng)下安裝配置JDK的三種方法

保留數(shù)據(jù)重裝后sqlserver數(shù)據(jù)庫(kù)不能啟動(dòng)（sql2008,sql2012）

快云服務(wù)器系統(tǒng)盤(pán)擴(kuò)容教程(CentOS系統(tǒng))

Centos7.2系統(tǒng)安裝Apache2.4+PHP5.6+Mysql5.6

CentOS操作系統(tǒng)下安裝配置JDK的三種方法

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