package data;import java.io.StringWriter;import java.sql.Connection;import java.sql.DriverManager;import java.sql.ResultSet;import java.sql.Statement;import java.util.HashMap;import javax.xml.parsers.DocumentBuilder;import javax.xml.parsers.DocumentBuilderFactory;import javax.xml.transform.Transformer;import javax.xml.transform.TransformerFactory;import javax.xml.transform.dom.DOMSource;import javax.xml.transform.stream.StreamResult;import org.w3c.dom.Document;import org.w3c.dom.Element;public class DataSet {		private HashMap<String,String> tm = new HashMap<String,String>();	public void init()	{			try{					//1.加载驱动					Class.forName("com.mysql.jdbc.Driver");					//2、获取connection					String url = "jdbc:mysql://localhost:3306/mydb";					Connection conn = DriverManager.getConnection(							url,"neo","neo");					//3、创建statement					Statement stmt =conn.createStatement();										//4、利用statement执行sql					String sql = "select id, name, sex, age from user";					ResultSet rs = stmt.executeQuery(sql);										DocumentBuilderFactory dFact = DocumentBuilderFactory.newInstance();					DocumentBuilder build = dFact.newDocumentBuilder(); 										TransformerFactory tFact = TransformerFactory.newInstance();										while(rs.next()){												Document doc = build.newDocument();						Element user = doc.createElement("user");						doc.appendChild(user); 						Element name = doc.createElement("name");						name.appendChild(doc.createTextNode(rs.getString(2)));						user.appendChild(name);												Element sex = doc.createElement("sex");						sex.appendChild(doc.createTextNode(rs.getString(3)));						user.appendChild(sex);												Element age = doc.createElement("age");						age.appendChild(doc.createTextNode(rs.getString(4)));						user.appendChild(age);						 						Transformer trans = tFact.newTransformer();           						StringWriter writer = new StringWriter();  						StreamResult result = new StreamResult(writer);  						DOMSource source = new DOMSource(doc);  						trans.transform(source, result);												String skey = rs.getString(1);						String sValue = http://www.mamicode.com/writer.toString();>