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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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  •   jakeyfly · Feb 28, 2018 · 3934 views
    This topic created in 3178 days ago, the information mentioned may be changed or developed.

    碰到空值咋办，直接就报错停了。求大佬赐招

  • 空值
  • xpath
  • 字符
  • 大佬
    5 replies  •  2018-02-28 08:59:59 +08:00
    Zzde
    Zzde
    Feb 28, 2018 via iPhone
    1
    try
    stamaimer
    stamaimer
    Feb 28, 2018 via iPhone
    2
    check before get
    zwl2012
    zwl2012
    Feb 28, 2018 via iPhone
    3
    取之前判断下呗
    grimpil
    grimpil
    Feb 28, 2018 via Android
    4
    先判断是不是空值
    mochanight
    mochanight
    Feb 28, 2018 via iPhone
    5
    加个 if 判断 xxx[0]是不是为空
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