ava利用JDom來(lái)解析處理XML數(shù)據(jù)格式：
需要的包jdom-1.1.2.jar
1、將數(shù)據(jù)轉(zhuǎn)換成XML格式的數(shù)據(jù)進(jìn)行傳遞
Element rootList, firstList, secondItem, thirdItem;
//根元素標(biāo)簽名
rootList = new Element("root");
//根元素標(biāo)簽內(nèi)的屬性名與值
rootList.setAttribute("project", pname);
//生成Doc文檔
Document Doc = new Document(rootList);
//獲取文檔中的根標(biāo)簽
rootList = Doc.getRootElement();
for (int i = 0; i < judges.size(); i++)
{
//生成新的元素
firstList = new Element("flayout");
firstList.setAttribute("percent", "percent");
//加入根級(jí)元素中
rootList.addContent(firstList);
}
XMLOutputter XMLOut = new XMLOutputter();
//將doc文檔轉(zhuǎn)換為字符串型的XML格式
String xmlinfo = XMLOut.outputString(Doc);
//將開(kāi)頭的去掉
xmlinfo = xmlinfo.replace("<?xml version=\"1.0\" encoding=\"UTF-8\"?>",
"");
//返回已經(jīng)封裝好的XML數(shù)據(jù)
return xmlinfo; |
2、將字符串中的XML解析出進(jìn)行處理
//創(chuàng)建一個(gè)新的字符串
StringReader read = new StringReader(stadXML);
// 創(chuàng)建新的輸入源SAX 解析器將使用 InputSource 對(duì)象來(lái)確定如何讀取 XML 輸入
InputSource source = new InputSource(read);
// 創(chuàng)建一個(gè)新的SAXBuilder
SAXBuilder sb = new SAXBuilder();
String projectName;
List<Judgestandard> standIndex = new ArrayList<Judgestandard>();
try {
// 通過(guò)輸入源構(gòu)造一個(gè)Document
Document doc = sb.build(source);
// 取的根元素
Element root = doc.getRootElement();
projectName = root.getAttributeValue("project");
// 得到根元素所有子元素的集合
Element et = null;
List nodes = root.getChildren();
// 第一級(jí)指標(biāo)
for (int i = 0; i < nodes.size(); i++) {
et = (Element) nodes.get(i);// 循環(huán)依次得到子元素
Judgestandard judge = new Judgestandard();
//獲取該元素中屬性的值
String fid = et.getAttributeValue("mainid");
//獲取元素的孩子數(shù)目
List fsize = et.getChildren();
// 第二級(jí)指標(biāo)
for (int j = 0; j < fsize.size(); j++)
{
et = (Element) fsize.get(j);// 循環(huán)依次得到子元素
et.getAttributeValue("stdid")
} |
Java處理XML文檔
不需要包
待處理的XML文檔：
<?xml version="1.0" encoding="ISO-8859-1"?>
<root>
<ip>localhost</ip>
<port>8080</port>
</root>
static DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
static DocumentBuilder builder = null;
builder = factory .newDocumentBuilder();
//獲取服務(wù)器根目錄地址
Document document = builder.parse(new File("src/ip.xml"));
Element rootElement = document.getDocumentElement();
NodeList list1 = rootElement.getElementsByTagName("ip");
NodeList list2 = rootElement.getElementsByTagName("port");
Element ip = (Element) list1.item(0);
Element port = (Element) list2.item(0);
String s =ip.getFirstChild().getNodeValue().toString()+":"+port.getFirstChild().getNodeValue().toString();
System.out.println(s); |