我有使用 DOM 解析器解析的 xml 配置文件。当我使用 node.getTextContent(); 从子节点获取值时,我无法删除字符串 value 中的空格。当我给出没有空格的值时,它会起作用。但是,我也必须处理负面场景。
我尝试了trim()、replaceAll("\s", "") 和replaceAll("\u00A0", "");但没有任何效果
NodeList serviceAddrNodeList=serviceAddressesNode.getChildNodes();
packetSendingIplist =new ArrayList();
for (int l = 0; l < serviceAddrNodeList.getLength(); l++) {
Node serviceAddrNode=serviceAddrNodeList.item(l);
if(serviceAddrNode.getNodeType()==Node.ELEMENT_NODE){
String packetSendingIp = serviceAddrNode.getTextContent();
packetSendingIp.trim(); //replaceAll("\s", "") and replaceAll("\u00A0", "")
if(checkValidIp(packetSendingIp)){
log("invalid service_addr-"+packetSendingIp+"ignoring this
listening point ");
}
}
}
xml:
<service_addresses>
<!-- host1 -->
<service_addr>172.17.1.16 </service_addr>
<service_addr>172.17.1.17 </service_addr>
<!-- host12-->
<service_addr>172.17.1.32</service_addr>//works becuase no space here
<service_addr>172.17.1.33 </service_addr>
</service_addresses>
最佳答案
试试这个
File fXmlFile = new File("your xml file path");
DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
Document doc = dBuilder.parse(fXmlFile);
NodeList nodeList = doc.getElementsByTagName("service_addr");
for(int i = 0; i < nodeList.getLength(); i++) {
System.out.println(nodeList.item(i).getTextContent().trim());
}
输出,没有任何空格
172.17.1.16
172.17.1.17
172.17.1.32
172.17.1.33
关于java - 使用 node.getTextContent() 从 xml 获取值时无法删除空格,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/53886491/