在load csv 进mysql的时候,报这个错,苦恼了很长时间,网上搜索不到答案. mysql>    load data infile '/home/hdh/8_sr/8_45.csv'  into table  xizang.fp45 fields terminated by ','   escaped by '"' lines terminated by '\r\n'; 解决方案: 1.查看字符集,Linux, 数据库,表 mysql> show variables like…

Given a string, find the first non-repeating character in it and return it's index. If it doesn't exist, return -1. Examples: s = "leetcode" return 0. s = "loveleetcode", return 2. Note: You may assume the string contain only lowercase…

Given a string, find the first non-repeating character in it and return it's index. If it doesn't exist, return -1. Examples: s = "leetcode" return 0. s = "loveleetcode", return 2. 分析:找出字符串中第一次出现且不重复的字符,返回其字符的下标,如果不存在就返回-1. 用hashMap进行求…

问题: 插入数据时,报了这样一个错误:“_mysql_exceptions.Warning: Incorrect string value: ‘\xE6\xB5\x81\xE8\xA1\x8C…’ for column ‘name’ at row 1”. 我使用了中文的数据,看起来就是一个字符集不兼容的错误:Django默认使用UTF-8,而mysqld那边配置是默认使用了latin1 – default collation . 解决办法如下: (1)设置my.cnf vim /etc/mysq…

Problem: Given a string, find the first non-repeating character in it and return it's index. If it doesn't exist, return -1. Example: s = "leetcode" return 0. s = "loveleetcode", return 2. 本题的第一想法是开一个字母表计数器,遍历string s中的元素,并利用计数器对每一个字母计…

BeautifulSoup很赞的东西 最近出现一个问题:Python 3.3 soup=BeautifulSoup(urllib.request.urlopen(url_path),"html.parser") soup.findAll("a",{"href":re.compile('^http|^/')}) 出现warning: Some characters could not be decoded, and were replaced wi…

在BaseFragment中使用了LoadingPage,而LoadingPage的联网加载使用的是AsyncHttpClient.一直报java.lang.IllegalArgumentException: Illegal character in query at index 261解析不成功,改成OkHttp解析即可. 网上有些方法,说先URLEncode再拼接,如果解决不了,换个联网请求方式,试一下.…

今天遇到一个错误提示:ORA-06502:PL/SQL :numberic or value error: character string buffer too small,一般对应的中文信息为:ORA-06502: PL/SQL: 数字或值错误 :字符串缓冲区太小.仔细检查调试过程中才发现是开发人员定义了一个变量,但是在脚本里面赋予了该变量超过其长度的值.结果就报这个错误.我习惯总结每一个遇到的错误信息,既有利于学习.总结知识,也方便以后遇到此类问题能够及时给出解决方法. 如果执行oerr…

Character类 用来判断大小写 方法: public static boolean isUpperCase(char ch):判断是否大写 public static boolean isLowerCase(char ch):判断是否小写 public static boolean isDightCase(char ch):判断是否为数字 public static char toUpperCase(char ch):转换成大写 public static char toLowerCase…

原题链接在这里:https://leetcode.com/problems/first-unique-character-in-a-string/ 题目: Given a string, find the first non-repeating character in it and return it's index. If it doesn't exist, return -1. Examples: s = "leetcode" return 0. s = "lovele…