xpath 取到的返回都是数组，想要字符串要加[0],那要是是个空值就报错了

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碰到空值咋办，直接就报错停了。求大佬赐招

5 replies • 2018-02-28 08:59:59 +08:00

Zzde

Feb 28, 2018 via iPhone

try

stamaimer

Feb 28, 2018 via iPhone

check before get

zwl2012

Feb 28, 2018 via iPhone

取之前判断下呗

grimpil

Feb 28, 2018 via Android

先判断是不是空值

mochanight

Feb 28, 2018 via iPhone

加个 if 判断 xxx[0]是不是为空