Failed to convert value of type 'java.lang.String' to required type 'int'; nested exception is java.lang.NumberFormatException: For input string: "undefined"

Failed to convert value of type 'java.lang.String' to required type 'int'; nested exception is java.lang.NumberFormatException: For input string: "undefined"

提交的表单参数错误，应该是int类型，但是却没有参数undefined“”

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原文地址：https://www.cnblogs.com/youziji/p/12245907.html