Java生成XML文件

 1 package xmlDom.vo;
 2  
 3 import java.io.Serializable;
 4 import java.util.Date;
 5 import java.util.List;
 6 
 7 public class Admin implements Serializable
 8 {
 9     private String aid;
10     private String password;
11     private Integer rid;
12     private Integer type;
13     private Date lastdate;
14     private Integer flag ; 
15      
16     
17  
18  
19     public Integer getRid()
20     {
21         return rid;
22     }
23     public void setRid(Integer rid)
24     {
25         this.rid = rid;
26     }
27     public String getAid()
28     {
29         return aid;
30     }
31     public void setAid(String aid)
32     {
33         this.aid = aid;
34     }
35     public String getPassword()
36     {
37         return password;
38     }
39     public void setPassword(String password)
40     {
41         this.password = password;
42     }
43     public Integer getType()
44     {
45         return type;
46     }
47     public void setType(Integer type)
48     {
49         this.type = type;
50     }
51     public Date getLastdate()
52     {
53         return lastdate;
54     }
55     public void setLastdate(Date lastdate)
56     {
57         this.lastdate = lastdate;
58     }
59     public Integer getFlag()
60     {
61         return flag;
62     }
63     public void setFlag(Integer flag)
64     {
65         this.flag = flag;
66     } 
67     
68 }

 1 package xmlDom.dbc;
 2 
 3 import java.sql.Connection;
 4 import java.sql.DriverManager;
 5 import java.sql.SQLException;
 6 
 7 public class DatabaseConnection
 8 {
 9     private static final String MYSQLDRIVER = "org.gjt.mm.mysql.Driver";
10     private static final String MYSQLURL = "jdbc:mysql://localhost:3306/hrdb";
11     private static final String USERNAME = "root";
12     private static final String PASSWORD = "admin";
13 
14     private Connection conn;
15 
16     public DatabaseConnection()
17     {
18         try
19         {
20             Class.forName(MYSQLDRIVER);
21             this.conn = DriverManager.getConnection(MYSQLURL, USERNAME, PASSWORD);
22         } catch (Exception e)
23         {
24             e.printStackTrace();
25         }
26     }
27 
28     public Connection getConnection() throws Exception
29     {
30         if (null != this.conn)
31             return this.conn;
32         else
33             throw new Exception("获取数据库连接失败");
34     }
35 
36     public void close()
37     {
38         if (null != this.conn)
39         {
40             try
41             {
42                 this.conn.close();
43             } catch (SQLException e)
44             {
45                 e.printStackTrace();
46             }
47         }
48     }
49 }

    public static List<Admin> loadFromDB() throws Exception
    {
        List<Admin> allAdmins = new ArrayList<Admin>();
        
        DatabaseConnection dbc = new DatabaseConnection();
        Connection conn = dbc.getConnection();
        PreparedStatement ps = conn.prepareStatement("SELECT aid,rid,type,lastdate,flag FROM admin");
        ResultSet rs = ps.executeQuery();
        while(rs.next())
        {
            Admin vo = new Admin();
            
            vo.setAid(rs.getString("aid"));
            vo.setRid(rs.getInt("rid"));
            vo.setType(rs.getInt("type"));
            vo.setLastdate(rs.getDate("lastdate"));
            vo.setFlag(rs.getInt("flag"));
            
            allAdmins.add(vo);
        }
        
        return allAdmins;
    }

    public static Document getDocument( List<Admin> allAdmins) throws Exception
    {
        DocumentBuilderFactory dbfactory = DocumentBuilderFactory.newInstance();
        DocumentBuilder documentBuilder = dbfactory.newDocumentBuilder();
        Document document = documentBuilder.newDocument();
        
        Element root = document.createElement("admins");
        
        for(Admin item : allAdmins)
        {
            Element admin = document.createElement("admin");
            admin.setAttribute("aid", item.getAid());
            
            Element rid = document.createElement("rid");
            rid.appendChild(document.createTextNode(String.valueOf(item.getRid())));
            
            Element type = document.createElement("type");
            type.appendChild(document.createTextNode(String.valueOf(item.getType())));
            
            Element lastdate = document.createElement("lastdate");
            lastdate.appendChild(document.createTextNode(String.valueOf(item.getLastdate())));
            
            Element flag = document.createElement("flag");
            flag.appendChild(document.createTextNode(String.valueOf(item.getFlag())));
            
            admin.appendChild(rid);
            admin.appendChild(type);
            admin.appendChild(lastdate);
            admin.appendChild(flag);
            
            root.appendChild(admin);
        }
        
        document.appendChild(root);
        
        
        
        return document;
    }

    public static void main(String[] args) throws Exception
    {
        List<Admin> allAdmins  = loadFromDB();
        Document document = getDocument(allAdmins);
        
        Source source = new DOMSource(document);
        StreamResult stream = new StreamResult(new FileOutputStream(new File("C:\\D\\code\\resource\\admins.xml")));
        TransformerFactory transFactory = TransformerFactory.newInstance();
        Transformer trans = transFactory.newTransformer();
        trans.setOutputProperty(OutputKeys.ENCODING, "UTF-8");
        trans.transform(source, stream);
        
        System.out.println("main done//~~");
    }