<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[c_c18的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/c_c18</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; c_c18]]></copyright><item><title><![CDATA[Java.sql.SQLException: Parameter index out of range (1 ＞ number of parameter)]]></title><link>https://blog.youkuaiyun.com/c_c18/article/details/134588430</link><guid>https://blog.youkuaiyun.com/c_c18/article/details/134588430</guid><author>c_c18</author><pubDate>Thu, 23 Nov 2023 23:18:48 +0800</pubDate><description><![CDATA[在上面的代码中，我们试图向数据库中的users表插入一条新的记录，传入了name和age作为参数。然而，有时候我们可能会遇到一个名为"java.sql.SQLException: Parameter index out of range (1 > number of parameter)"的异常。这个异常的意思是参数索引超出范围，通常是由于预编译的SQL语句中的参数索引与提供的参数数量不匹配所导致的。出现这个异常的原因是由于我们错误地设置了参数的索引，不匹配预编译的SQL语句中的参数索引。]]></description><category></category></item><item><title><![CDATA[oracle 与desc相似的,Oracle中和MYSQL show create table tablename，desc tablename,show tables, show databases]]></title><link>https://blog.youkuaiyun.com/c_c18/article/details/128450460</link><guid>https://blog.youkuaiyun.com/c_c18/article/details/128450460</guid><author>c_c18</author><pubDate>Mon, 26 Dec 2022 23:01:39 +0800</pubDate><description><![CDATA[oracle查询create语句]]></description><category></category></item><item><title><![CDATA[mysql报错: Illegal mix of collations (utf8mb4_0900_ai_ci,COERCIBLE) and (gbk_chinese_ci,IMPLICIT) for]]></title><link>https://blog.youkuaiyun.com/c_c18/article/details/127817964</link><guid>https://blog.youkuaiyun.com/c_c18/article/details/127817964</guid><author>c_c18</author><pubDate>Sun, 13 Nov 2022 21:39:02 +0800</pubDate><description><![CDATA[Caused by: java.sql.SQLException: Illegal mix of collations (utf8mb4_0900_ai_ci,COERCIBLE) and (gbk_chinese_ci,IMPLICIT) for operation 'UNION']]></description><category></category></item><item><title><![CDATA[【无标题】]]></title><link>https://blog.youkuaiyun.com/c_c18/article/details/125849224</link><guid>https://blog.youkuaiyun.com/c_c18/article/details/125849224</guid><author>c_c18</author><pubDate>Mon, 18 Jul 2022 14:42:05 +0800</pubDate><description><![CDATA[eclipse]]></description><category></category></item><item><title><![CDATA[ORA-01747: user.table.column, table.column 或列说明无效]]></title><link>https://blog.youkuaiyun.com/c_c18/article/details/105108063</link><guid>https://blog.youkuaiyun.com/c_c18/article/details/105108063</guid><author>c_c18</author><pubDate>Wed, 25 Mar 2020 23:53:26 +0800</pubDate><description><![CDATA[springboot2.1.7 + mybatisplus3.1.2
在往oracle插入数据时，报错：
ORA-01747: user.table.column, table.column 或列说明无效
原因：
因为使用了oracle的关键字所引起，表中有个字段名为order和values，在oracle中是关键字。（可以把SQL语句复制到连接工具中如Navicate，关键字会显示出不一样的颜色...]]></description><category></category></item><item><title><![CDATA[springboot启动失败]]></title><link>https://blog.youkuaiyun.com/c_c18/article/details/104420686</link><guid>https://blog.youkuaiyun.com/c_c18/article/details/104420686</guid><author>c_c18</author><pubDate>Thu, 20 Feb 2020 23:47:04 +0800</pubDate><description><![CDATA[springboot启动失败，后台错误信息如下
java.lang.IllegalStateException: Failed to load property source from location 'classpath:/application.yml'
......................................
.................................]]></description><category></category></item><item><title><![CDATA[Tomcat发布项目时报错：Could not publish server configuration for Tomcat v7.0 Server at localhost.]]></title><link>https://blog.youkuaiyun.com/c_c18/article/details/104409494</link><guid>https://blog.youkuaiyun.com/c_c18/article/details/104409494</guid><author>c_c18</author><pubDate>Thu, 20 Feb 2020 13:44:46 +0800</pubDate><description><![CDATA[基本描述：
用Spring Tool Suit开发一个web项目时，之前已经建了一个项目（如名称叫Test），然后后面将Test项目重命名后又导入了Spring Tool Suit了，取名为Test2，我后面把一个外部的index.jsp页面直接复制粘贴到Test2中，替换了原来的index.jsp页面。然后再来把Test2重新发布到Tomcat7中时，出现错误：Could not publish...]]></description><category></category></item><item><title><![CDATA[初识springboot]]></title><link>https://blog.youkuaiyun.com/c_c18/article/details/104409334</link><guid>https://blog.youkuaiyun.com/c_c18/article/details/104409334</guid><author>c_c18</author><pubDate>Thu, 20 Feb 2020 13:34:08 +0800</pubDate><description><![CDATA[启动springboot报错，提示信息如下
Your ApplicationContext is unlikely to start due to a @ComponentScan of the default package.

错误原因：ApplicationContext不能从@ComponentScan默认包启动，而我的Springboot启动类直接放在默认包src\main\java中
...]]></description><category></category></item><item><title><![CDATA[mysql8.0.x创建用户及授权]]></title><link>https://blog.youkuaiyun.com/c_c18/article/details/104409278</link><guid>https://blog.youkuaiyun.com/c_c18/article/details/104409278</guid><author>c_c18</author><pubDate>Thu, 20 Feb 2020 13:30:01 +0800</pubDate><description><![CDATA[一，mysql8.x创建用户及授权
mysql&gt; use mysql;
创建数据库
mysql&gt; create database db_demo;
创建用户
”rick“为要创建的用户名；localhost表示只允许本地登录，若把localhost改为“%”则表示任何机器都运行连接；“123456"代表用户登录密码；
mysql&gt; create user ‘rick’@‘loca...]]></description><category></category></item><item><title><![CDATA[oracle 11g安装出现的问题]]></title><link>https://blog.youkuaiyun.com/c_c18/article/details/104408352</link><guid>https://blog.youkuaiyun.com/c_c18/article/details/104408352</guid><author>c_c18</author><pubDate>Thu, 20 Feb 2020 12:15:33 +0800</pubDate><description><![CDATA[在安装Oracle11g时，遇到的问题：
1，设置登录口令时，提示不符合要求。一般对于学习Oracle的用户来说，肯定想设个简单的登录密码，所有这里我们也可以忽略系统的错误提示，继续下一步。
2，在检查时，报错
“Environment variable: “PATH” - This test checks whether the length of the environment variabl...]]></description><category></category></item></channel></rss>