Question

我正在尝试使用绝对路径并为我的XPath 1.0添加条件

<School>
<Category group = "red">
    <Teacher name = "john" Status = "Absent" />
    </Teacher>
</Category>
    <Category group = "Green">
    <Teacher name = "Smith" Status = "Present" />
</Category>

我希望实现的目标是：

if 
    /School/Category[@group = "Red"]/@Status = "Present"
then 
    /School/Category[@group = "Red"]/teacher/@name 
else
    /School/Category[@group = "Green"]/teacher/@name

Answer 1

使用XPath 1.0，您可以这样做：

/School/Category[@group = 'red']/Teacher[@Status = 'Present']/@name 
    | 
/School[
    not(
        Category[@group = 'red']/Teacher[@Status = 'Present']
    )
]/Category[@group = 'Green']/Teacher/@name

union运算符（|）之前的XPath部分表示以下逻辑：

if 
    /School/Category[@group = "Red"]/@Status = "Present"
then 
    /School/Category[@group = "Red"]/teacher/@name

......其余代表以下逻辑：

if not
    (/School/Category[@group = "Red"]/@Status = "Present")
then 
    /School/Category[@group = "Green"]/teacher/@name

<强> xpathtester demo

输出

Smith

具有绝对路径的xpath中的条件

1 个答案: