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Struts中利用action来输出xml文件

      应一个同事的要求,要利用strtus的Action将一个数据库表的数据输出为xml格式的数据,方便导入使用。经研究Action还真能办到,实际上不是Action的功劳,而是JDOM的功劳,不说那么多了,给大家分享一下。     我有一个测试表,有两个字段,一个是用户名,一个是密码,现将这个表的数据全部输出为xml格式的。首先给出我的Action,代码如下: package com.yourcompany.struts.action;
import java.io.IOException;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.sql.DataSource;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.jdom.Document;
import org.jdom.Element;
import org.jdom.output.XMLOutputter;
import com.yourcompany.struts.form.User;
public class DisplayALL extends Action {
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {
DataSource ds = getDataSource(request, "s9");
Connection conn = ds.getConnection();
Statement stmt = null;
ResultSet rs = null;
response.setContentType("text/xml;charset=utf-8");
Element rootElement = new Element("users");
Document users = new Document(rootElement);
try {
String ls_sql = "select * from dd ";
stmt = conn.createStatement();
rs = stmt.executeQuery(ls_sql);
while (rs.next()) {
Element user = new Element("user");
user.setAttribute("username", rs.getString(1));
user.setAttribute("password", rs.getString(2));
rootElement.addContent(user);
}
XMLOutputter xout=new XMLOutputter();
xout.output(users,response.getWriter());
} c


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