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Caused by: java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right s... 阅读全文
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各种数字类型转换成字符串型: String s = String.valueOf( value); // 其中 value 为任意一种数字类型。 字符串型转换成各种数字类型: String s = "169"; byte b = Byte.parseByte( s ); short t = Shor... 阅读全文
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org.apache.jasper.JasperException: /pages/mpMaterial/materialOutside/MpMaterialWarningsList.jsp (line: 133, column: 131) The JSP specification requires that an attribute name is preceded by whitespace at org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:41) at org.ap.. 阅读全文
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不是必须的。该错误 There is no result type defined for type 'dispatcher' mapped with name 'success'原因是:类型dispatcher是在struts-default.xml中定义的,从这个意义上说,又是必须写extends="struts-default"的,否则你就自定义一套result type,interceptor等等 阅读全文