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什么是抓取异常

抓取异常指的是在程序中捕获程序运行时可能发生的异常，并对异常进行处理，以避免程序因异常而崩溃或运行出错。在程序中，我们可以使用 try-catch 块来捕获异常并进行相应的处理，例如打印错误信息、给出提示等。抓取异常是一个良好的编程习惯，可以提高程序的健壮性和可靠性。

Public @ 2023-06-16 20:00:12

抓取诊断工具能做什么

目前抓取诊断工具有如下作用：1、诊断抓取内容是否符合预期，譬如很多商品详情页面，价格信息是通过JavaScript输出的，对百度蜘蛛不友好，价格信息较难在搜索中应用。问题修正后，可用诊断工具再次抓取检验。2、诊断网页是否被加了黒链、隐藏文本。网站如果被黑，可能被加上隐藏的链接，这些链可能只在百度抓取时才出现，需要用此抓取工具诊断。3、检查网站与百度的连接是否畅通，若是IP信息不一致，可以报错通知百

Public @ 2013-02-13 16:02:22

【技术支持】json示例

下面是一个简单的JSON示例，描述一个人的信息： ```json { "name": "Tom", "age": 25, "gender": "Male", "address": { "street": "123 Main St", "city": "New York", "state": "NY",

Public @ 2023-03-28 20:50:22

百度搜索资源平台-添加站点时，提示无权限暂不可添加怎么办？

建议先清缓存/cookie优化一下。如仍有问题请到反馈中心反馈。

Public @ 2015-09-16 16:08:20

MADCon搜索（厦门）分享会&;百度之夜精彩抢先看

作者：百度站长平台发布时间：4月1日4月14日，一年一度搜索行业盛会MADCon搜索（厦门）分享会即将盛大开幕。百度站长平台召集搜索圈最强阵容齐聚厦门，精彩内容抢先了解：MADCon大会将以百度站长平台移动搜索专家熊咏志的演讲作为开场。移动搜索炙手可热，百度最新

Public @ 2014-03-03 16:07:16

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基本文件流程错误 SQL 调试

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[ DB ] CONNECT:[ UseTime:0.024126s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_config` [ RunTime:0.017438s ]
[ SQL ] SELECT * FROM `ob_config` [ RunTime:0.016307s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_config', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 25, 'extra' => NULL, ) ]
[ SQL ] SHOW COLUMNS FROM `ob_hook` [ RunTime:0.017209s ]
[ SQL ] SELECT `id`,`name`,`addon_list` FROM `ob_hook` [ RunTime:0.016267s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_hook', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 3, 'extra' => NULL, ) ]
[ SQL ] SHOW COLUMNS FROM `ob_article` [ RunTime:0.017230s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 9013 LIMIT 1 [ RunTime:0.016349s ]
[ 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:0.016983s ]
[ 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:0.016936s ]
[ 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:0.016943s ]
[ 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` = 9013 LIMIT 1 [ RunTime:0.016365s ]
[ 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=9013 [ RunTime:0.018897s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `cate` = '威海百度搜索资源平台' AND `status` <> -1 LIMIT 1 [ RunTime:0.024010s ]
[ 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` = '威海百度搜索资源平台' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.046879s ]
[ 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` = '威海百度搜索资源平台' AND `status` <> -1 LIMIT 1 [ RunTime:0.023454s ]
[ 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` = '威海百度搜索资源平台' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.043856s ]
[ 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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