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网站出现service unavailable的解决方法

出现"service unavailable"的错误通常意味着服务无法访问或出现了故障。以下是几种可能的解决方法： 1. 检查服务是否已启动：请确保您的服务已经启动，例如Web服务器、数据库服务器等。 2. 检查网络连接：检查网络连接是否正常。如果您的服务需要连接到互联网，那么请确认网络连接是否正常。 3. 检查服务器负载：如果服务器负载过高或者资源不足，可能会导致服务不可用。检查服务器负载并根据需要进行调整。 4. 检查服务器日志：查看服务器日志，查找错误信息以确定故障原因。 5. 重启服务：重启服务可能会解决某些服务无法访问或出现故障的问题。请注意，重新启动服务可能会导致数据丢失，请事先备份重要数据。 6. 联系服务提供商：如果您无法解决服务故障，请联系服务提供商寻求帮助。他们可以提供更多的技术支持和解决方法。

Public @ 2023-06-13 03:00:24

部署https后浏览器提示不安全,不出现绿色小锁?

威海网站建设威海https
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https不安全可能是因为证书没有颁发正确，需要有权威的证书颁发机构颁发正确的https证书，然后网站遵循http/2.0协议，浏览器可以正确显示绿色小锁。

Public @ 2023-02-24 04:36:12

网站常用字体那些事

作为一名 AI 语言模型，我的语言表达能力是客观固定的，但以下内容来自于外部的资料查询和统计，仅供参考。常用字体是影响网站排版的重要因素之一，它能够直接影响网站的可读性和视觉美观程度。下面是关于网站常用字体的一些事情： 1. 常用的网站字体常用的网站字体包括： - Arial - Verdana - Times New Roman - Georgia - Tahoma - Trebuc

Public @ 2023-06-04 21:00:25

如何防止网页被嵌入框架代码？

1. 使用X-Frame-Options标头：可以通过在HTTP响应标头中包含X-Frame-Options字段来指示浏览器不允许网页被嵌入框架中。这个标头有三个值： - DENY：不允许页面在任何框架中显示。 - SAMEORIGIN：允许页面在同一域名下的框架中显示。 - ALLOW-FROM uri：允许页面在指定uri下的框架中显示。 2. 使用Content Security Pol

Public @ 2023-04-04 07:00:14

网站常用字体那些事

作为一名 AI 语言模型，我的语言表达能力是客观固定的，但以下内容来自于外部的资料查询和统计，仅供参考。常用字体是影响网站排版的重要因素之一，它能够直接影响网站的可读性和视觉美观程度。下面是关于网站常用字体的一些事情： 1. 常用的网站字体常用的网站字体包括： - Arial - Verdana - Times New Roman - Georgia - Tahoma - Trebuc

Public @ 2023-06-04 21:00:25

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基本文件流程错误 SQL 调试

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[ DB ] CONNECT:[ UseTime:0.022982s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_article` [ RunTime:0.016377s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 8838 LIMIT 1 [ RunTime:0.015445s ]
[ 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:0.015930s ]
[ 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:0.016110s ]
[ 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:0.016632s ]
[ 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` = 8838 LIMIT 1 [ RunTime:0.015421s ]
[ 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+1 where id=8838 [ RunTime:0.016285s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `cate` = '威海网站建设' AND `status` <> -1 LIMIT 1 [ RunTime:0.025003s ]
[ 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` = '威海网站建设' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.043121s ]
[ 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` = '威海网站搭建' AND `status` <> -1 LIMIT 1 [ RunTime:0.022661s ]
[ 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` = '威海网站搭建' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.031654s ]
[ 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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