如何防止java.lang.NumberFormatException:用于输入字符串:“N/A”?
NumberFormatException:
java.lang.NumberFormatException: For input string: "N/A" at java.lang.NumberFormatException.forInputString(Unknown Source) at java.lang.Integer.parseInt(Unknown Source) at java.lang.Integer.valueOf(Unknown Source) at java.util.TreeMap.compare(Unknown Source) at java.util.TreeMap.put(Unknown Source) at java.util.TreeSet.add(Unknown Source)`
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