某人写的JSP生成XML

<%@ page contentType="text/xml; charset=gb2312" %>
<%@ page import="java.io.*"%>
<%@ page import="java.sql.*, javax.sql.*" %>
<%@ page import="java.util.*"%>
<%@ page import="java.math.*"%>

<%

Connection conn;
Statement stmt;
ResultSet rs;

try{
String table_name = request.getParameter("tableName");

//mysql连接
//Class.forName("com.mysql.jdbc.Driver").newInstance();
//String URL="jdbc:mysql://localhost:3306/job?user=root&password=111111";
//Connection con = DriverManager.getConnection(URL);

//oracle连接
Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();
String URL="jdbc:oracle:thin:@10.88.3.230:1521:cust";
String user="vincent";
String password="123456";
  conn = DriverManager.getConnection(URL,user,password);

  stmt = conn.createStatement();
  String sql = " SELECT * FROM "+table_name;
  rs = stmt.executeQuery(sql);

// 设置表格的名字
String tableName = table_name.toUpperCase();

//得到列的名字
ResultSetMetaData rsmd = rs.getMetaData();
int numColumns = rsmd.getColumnCount();
String[] columnNames = new String[numColumns];
for (int i = 0; i < numColumns; i++) {
  columnNames[i] = rsmd.getColumnName(i + 1);
}

response.setContentType("text/xml"); 
out.write("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n");
out.write("<" + tableName + "s>");
//循环写入数据
while (rs.next()) {
  out.write("<" + tableName + ">");
  //每一行
  for (int i = 0; i < numColumns; i++) {
   out.write("<" + columnNames[i] + ">");
   out.write(String.valueOf(rs.getObject(i + 1)));
   out.write("</" + columnNames[i] + ">\n");
  }
out.write("</" + tableName + ">");
}
out.write("</" + tableName + "s>");
 
rs.close();
conn.close();
}
finally{
 
}


%>