读取xml文件基于xpath

<students>
<student province="Jiangsu">
        <id>110</id>
        <name>wangzhen</name>
        <major>English</major>
        <address province="guangzhou">Guangdong</address>
        <gender>male</gender>
        <birth>1987-08-08</birth>
    </student>
<student province="shanxi">
        <id>111</id>
        <name>wangzhen</name>
        <major>English</major>
        <address province="guangzhou">Guangdong</address>
        <gender>male</gender>
        <birth>1987-12-08</birth>
    </student>

</students>

1、 查找所有学生名字为wangzhen的birth

 

 String xpath="//student[name='wangzhen']/birth";
  List<Node> birthList= document.selectNodes(xpath);
  for(Node address :birthList){
   System.out.println(address.getText());
  }

 

获得节点的值一般用getText() 获得属性的值用getValue()

 

2、查找student下province属性值为shanxi的学生id

String xpath = "//student[@province='shanxi']";
//得到student元素province属性值为shanxi的所有学生元素
List<Element> studentElementList = document.selectNodes(xpath);
//循环获得单个学生元素。
    for(Element studentElement:studentElementList){
        //获得学生元素的id节点的值。其它值也可以这样获取。
         String id =studentElement.elementText("id");
         System.out.println(id);
}