Java学习路线String字符串的相关内容

[帮助文档] QuickBI图表外部链接跳转报错Failedtoconvertvalueoftype'java.lang.String'torequiredtype'java.lang.Long';nestedexceptionisjava.lang.NumberFormatException:Forinputstring:"[order_id]"

问题描述Quick BI图表外部链接跳转报错：Failed to convert value of type 'java.lang.String' to required type 'java.lang.Long'; nested exception is java.lang.NumberForma...

[帮助文档] Dataphin集成任务报错java.lang.NumberFormatException:Forinputstring:"null"

问题描述用户是用集成任务同步数据，从AnalyticDB MySQL2.0同步到其他数据库，任务报错“com.alibaba.datax.common.exception.DataXException: Code:[ADSReader-00], Description:[错误发生了，请联系管理员]....

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[帮助文档] Dataphin管道任务报错java.sql.SQLException:Incorrectstringvalue:'\xF4\x80\x80\x8E\xF4\x80...'forcolumn'XXX'atrow1

问题描述用户使用管道任务同步数据到MySQL，任务报错“java.sql.SQLException: Incorrect string value: '\xF4\x80\x80\x8E\xF4\x80...' for column 'XXX' at row 1”。问题原因报错字段有特殊符号，UTF-...

[帮助文档] 同步任务报错java.sql.SQLException:Incorrectstringvalue:'\xF4\x80\x80\x8E\xF4\x80...'forcolumn'XXX'atrow1

问题描述用户在使用集成任务同步数据到MySQL过程中，同步任务报错“java.sql.SQLException: Incorrect string value: '\xF4\x80\x80\x8E\xF4\x80...' for column 'XXX' at row 1”。问题原因报错字段可能存储...

Java学习路线-4：String字符串（3）

53 字符串查找boolean contains(String str) 判断子串是否存在 JDK>=1.5int indexOf(String str) 从开头查找子字符串位置没有查到返回 -1int indexOf(String str, int fromIndex) 从指定位置查找子字...

Java学习路线-4：String字符串（2）

48 主方法组成分析public static void main(String[] args) { }主方法是一切的开始点public 权限公开static 由类直接调用void 无返回main 固定方法名String[] args 接收启动参数；参数本身有空格，需要用双引号class Demo{...

Java学习路线-4：String字符串（1）

第10 章： String类特点分析42 String类简介双引号定义+连接字符串字符创串不是基本数据类型其中定义了一个数组，每一个字符都保存到数组中JDK 1.9支持的字符串形式增多了JDK 1.9 之后字符串数组使用byte类型JDK 1.8 字符串数组使用char类型字符串数组是字符的包装字...

[帮助文档] Dataphin中管道任务将MySQL数据同步到Maxcompute,运行报错[同步数据出现业务脏数据情况,数据类型转换错误.]-String['']不能转为BigDecimal.-java.lang.NumberFormatException

问题描述管道任务将MySQL数据同步到Maxcompute，运行报错“[同步数据出现业务脏数据情况，数据类型转换错误 .] - String [''] 不能转为BigDecimal . - java.lang.NumberFormatException”。完整的异常如下：2021-11-05 00:...

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