Dom4j解析XML文档

进一步学习对于XML文档的操作，用Dom4j进行XML文档的解析，与大家分享代码！

<?xml version="1.0" encoding="GB2312"?> 
<ZXTRJXLH>
  <STATUS>Y</STATUS> 
  <NSRSBH>110108722615277</NSRSBH> 
<NSRINFO>
  <NSRMC>无</NSRMC> 
  <SWJGDM>无</SWJGDM> 
</NSRINFO>
</ZXTRJXLH>

 

package dom4j.xml;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.StringReader;
import java.util.List;

import org.dom4j.Document;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;

public class Dom4jParseXml {
	private static String readXml(String url) throws IOException{
		//读取xml文件
		FileInputStream fis = new FileInputStream(url);
		byte[] b = new byte[1024];
		int n = 0;
		String s = "";
		StringBuffer sb = new StringBuffer();
		while((n=fis.read(b))!=-1){
			s = new String(b,0,n);//把字节数组中所读取到的字节构建String，
			//防止最后一次的多读
			sb.append(s);
		}
		return sb.toString();
	}
	private static String[] parseXml(String xml) {
		String flag[] = { "", "", "", "", "" };
		try {
			SAXReader reader = new SAXReader();
			reader.setEncoding("GBK");
			
			Document doc = reader.read(new StringReader(xml));
			Element root = doc.getRootElement();
			List rootList = root.elements();
			if (rootList.size() > 0) {
				Element element = (Element) root.element("STATUS");
				flag[0] = element.getText();

				element = (Element) root.element("NSRSBH");
				flag[1] = element.getText();
				
				List list = root.elements("NSRINFO");
				if (list.size() > 0) {
					for (int k = 0; k < list.size(); k++) {
						Element ele = (Element) list.get(k);
						// 纳税人名称
						element = (Element) ele.element("NSRMC");
						flag[2] = element.getText();
						// 税务机关代码
						element = (Element) ele.element("SWJGDM");
						flag[3] = element.getText();
					}
				}
			}
		} catch (Exception e) {
			e.printStackTrace();
		}
		return flag;
	}
	
	public static void main(String[] args) throws IOException {
		String url = "D:\\myxml.xml";
		String s = Dom4jParseXml.readXml(url);
		String[] ret = Dom4jParseXml.parseXml(s);
		System.out.println(ret[1]);
	}
}