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org.springframework.dao.DataIntegrityViolationException: Could not execute JDBC batch update; nested exception is org.hibernate.exception.ConstraintViolationException: Could not execute JDBC batch upd... 阅读全文
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导入包 -- <%@ taglib uri="http://java.sun.com/jsp/jstl/functions"prefix="fn"%>EL 获取 -- ${fn:length(list)} 阅读全文
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必需 JDKD:\Program Files\Java\jdk1.5.0\bin\native2ascii.exe在同目录下新建两个txt(1.txt保存想要转换的汉字;2.txt保存转换后的unicode码) 步骤:运行 cmd-- 以下 是输入命令-- cd D:\Program Files\Java\jdk1.5.0\bin-- d:-- native2ascii -encoding... 阅读全文