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Java File文件处理读文件

2025-12-07 19:42:38

Java File文件处理读文件

Java File文件处理读文件

Java File文件处理读文件

Java File文件处理读文件

Java File文件处理读文件

Java File文件处理读文件

Java File文件处理读文件

Java File文件处理读文件

Java File文件处理读文件

Java File文件处理读文件

Java File文件处理读文件

Java File文件处理读文件

Java中的文件读取操作涉及打开文件、选择合适的读取方式、处理文件内容以及最后关闭文件流。常用的读取方法包括FileReader、BufferedReader、Scanner和Files，每种方法适用于不同的场景，比如按字符读取、按行读取或一次性读取文件内容。文件读取过程中需要考虑异常处理，以确保在出现问题时程序能够正常运行。最佳实践是使用try-with-resources语句来自动关闭文件流，从而避免资源泄漏。通过合理选择读取方式和处理逻辑，可以高效地完成文件内容的读取与处理。#java #java学习 #java入门教程 #java文件读取 #cjavapy

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基本文件流程错误 SQL 调试

请求信息 : 2025-12-08 07:46:22 HTTP/2.0 GET : https://f.mffb.com.cn/a/457785.html
运行时间 : 0.183257s [ 吞吐率：5.46req/s ] 内存消耗：4,097.01kb 文件加载：140
缓存信息 : 0 reads,0 writes
会话信息 : SESSION_ID=fd3781165c9494acfac3544ac667b199

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CONNECT:[ UseTime:0.001118s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001641s ]
SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000722s ]
SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000679s ]
SHOW FULL COLUMNS FROM `set` [ RunTime:0.001490s ]
SELECT * FROM `set` [ RunTime:0.003758s ]
SHOW FULL COLUMNS FROM `article` [ RunTime:0.001500s ]
SELECT * FROM `article` WHERE `id` = 457785 LIMIT 1 [ RunTime:0.001007s ]
UPDATE `article` SET `lasttime` = 1765151182 WHERE `id` = 457785 [ RunTime:0.001310s ]
SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000919s ]
SELECT * FROM `article` WHERE `id` < 457785 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001956s ]
SELECT * FROM `article` WHERE `id` > 457785 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.002489s ]
SELECT * FROM `article` WHERE `id` < 457785 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.001262s ]
SELECT * FROM `article` WHERE `id` < 457785 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.001317s ]
SELECT * FROM `article` WHERE `id` < 457785 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.002388s ]

0.187023s

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