[英]Read values from a complex xml using java
HI I am new to Java and trying to read an XML file. 我是Java新手并尝试读取XML文件。 Here is my XML file :- 这是我的XML文件: -
<?xml version="1.0" encoding="UTF-8"?>
<parameter>
<attribute>a</attribute>
Here is my code I am trying to read the key and value from the xml but I am stuck .Here is my code :- 这是我的代码我试图从xml读取键和值但我被卡住了。这是我的代码: -
public class TestDBMain {
public static void main(String[] args) throws Exception {
// TODO Auto-generated method stub
File file = new File("ACL.xml");
DocumentBuilderFactory dbfactory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = dbfactory.newDocumentBuilder();
Document doc = builder.parse(file);
NodeList nList = doc.getElementsByTagName("testCaseDataName");
for(int i = 0;i<nList.getLength();i++){
Node nNode = nList.item(i);
if(nNode.getNodeType()== Node.ELEMENT_NODE){
Element ele = (Element) nNode;
// System.out.println(ele.getTextContent());
//System.out.println(ele.getElementsByTagName("testCaseName").item(0).getTextContent());
System.out.println(ele.getAttributeNode("testCaseDataName"));
//I dont know which methods to use to print the key and value in the xml under parameter
}
}
}
}
Can anyone please help me with this 任何人都可以帮我这个
your code read <testCaseDataName>
node. 您的代码读取<testCaseDataName>
节点。 it is not go inside of this tag. 它不会进入这个标签。 so try this.. 所以试试这个..
for(int i = 0;i<nList.getLength();i++){
NodeList nodeList = nList.item(i).getChildNodes();
for(int j = 0;j<nList.getLength();j++){
Node nNode = nodeList.item(j);
if(nNode.getNodeType()== Node.ELEMENT_NODE){
System.out.println(nNode.getNodeName() +" : "+nNode.getTextContent());
if(nNode.getNodeName().equals("parameter")){
NodeList param = nNode.getChildNodes();
System.out.println(" "+param.item(0).getNodeName() +" : "+param.item(0).getTextContent());
System.out.println(" "+param.item(1).getNodeName() +" : "+param.item(1).getTextContent());
}
}
}
}
Disclaimer: I maintain the JDOM project , so I am biased.... but... this is an ideal use case for JDOM: 免责声明:我维护JDOM项目 ,所以我有偏见....但是......这是JDOM的理想用例:
Document doc = new SAXBuilder().build(new File("ACL.xml"));
Element root = doc.getRootElement();
for (Element testcase : root.getChildren()) {
int id = Integer.parseInt(testcase.getChildText("id"));
String name = testcase.getChildText("testCaseName");
String expect = testcase.getChildText("expectedResult");
Map<String,String> params = new LinkedHashMap<String,String>();
Element parmemt = testcase.getChild("parameter");
if (parmemt != null) {
Iterator<Element> it = parmemt.getChildren().iterator();
while (it.hasNext()) {
Element key = it.next();
if (!"key".equals(key.getName())) {
throw new IllegalStateException("Expected key but got " + key);
}
if (!it.hasNext()) {
throw new IllegalStateException("Expected value for key " + key);
}
Element val = it.next();
if (!"value".equals(val.getName())) {
throw new IllegalStateException("Expected value but got " + val);
}
params.put(key.getValue(), val.getValue());
}
}
System.out.printf("Processing test case %d -> %s\n Expect %s\n Parameters: %s\n",
id, name, expect, params.toString());
}
For me this produces the output 对我来说,这会产生输出
Processing test case 1 -> EditTest
Expect nooptionsacltrue
Parameters: {}
Processing test case 2 -> AddTest
Expect featuresaddedacltrue
Parameters: {featues=w,f}
Processing test case 3 -> AddTest
Expect duplicateacltrue
Parameters: {projectType=NEW, Name=28HPM, status=ACTIVE, canOrder=Yes}
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