把applet打包成。jar后，IE文件该怎么写

hqchen 2003-08-24 06:28:59

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onefox 2003-08-24

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hqchen 2003-08-24

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这是applet请大家帮忙看看

package chen.baseInfo.tree;

import java.awt.*;
import java.awt.event.*;
import java.applet.*;
import javax.swing.*;
import javax.swing.tree.*;
import chen.baseInfo.tree.dbTool;
import java.sql.*;
import javax.sql.*;
import java.util.*;

/**
* Title: 
* Description: 
* Copyright: Copyright (c) 2003
* Company: 
* @author not attributable
* @version 1.0
*/

public class treeinfo extends Applet {
private boolean isStandalone = false;
private dbTool db;
private Connection con;
private java.sql.Statement statement;
private ResultSet set;
private JTree tree;
private mynode root = new mynode("root");
private Stack stack = new Stack();

//Get a parameter value
public String getParameter(String key, String def) {
return isStandalone ? System.getProperty(key, def) :
(getParameter(key) != null ? getParameter(key) : def);
}

//Construct the applet
public treeinfo() {
}
//Initialize the applet
public void init() {
try {
jbInit();
}
catch(Exception e) {
e.printStackTrace();
}
}
//Component initialization
private void jbInit() throws Exception {
this.db = new dbTool();
mynode node;
con = db.getCon();
statement = con.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,ResultSet.CONCUR_UPDATABLE);
this.set = this.getRootNode();
//创建根节点
if(set!=null){
set.first();
while (true) {
node=new mynode(set.getBigDecimal("nid").intValue(),new Integer(set.getString("visual")).intValue(),
set.getBigDecimal("fatherId").intValue(),new Integer(set.getString("exeable")).intValue(),
set.getString("vcname"),set.getString("vccode"),set.getString("url"));
root.add(node);
if (!set.next()) {
break;
}
}
}
//-----------------------

this.tree = new JTree(root);

for(int i=0;i<root.getChildCount();i++){
this.createTree((mynode)root.getChildAt(i));
}
add(tree);

}

/** @todo 创建信息树 */
private void createTree(mynode n){
this.stack.push(n);
String sql="";
mynode node;
mynode son;
ResultSet result;
while(!stack.isEmpty()){
node = (mynode)stack.pop();
result = this.getSonsNode(node.id);
if(result!=null){
try{
result.first();
while(true){
son = new mynode(result.getBigDecimal("nid").intValue(),new Integer(result.getString("visual")).intValue(),
result.getBigDecimal("fatherId").intValue(),new Integer(result.getString("exeable")).intValue(),
result.getString("vcname"),result.getString("vccode"),result.getString("url"));
node.add(son);
this.stack.push(son);
if(!result.next()){
break;
}
}
}catch(Exception e){}
result = null;
}
}
}

/** @todo 取得某节点的子节点 */
private ResultSet getSonsNode(int fatherid){
String sql = "SELECT * FROM tree WHERE fatherid = "+fatherid;

try{
ResultSet result = this.statement.executeQuery(sql);
return result;
}catch(SQLException e){
return null;
}
}

/** @todo 取得tree的根节点 */
private ResultSet getRootNode(){
String sql = "SELECT * FROM tree WHERE isroot = 1 ORDER BY vccode";
try{
ResultSet result = this.statement.executeQuery(sql);
return result;
}catch(SQLException e){
e.printStackTrace();
return null;
}
}

//Get Applet information
public String getAppletInfo() {
return "Applet Information";
}
//Get parameter info
public String[][] getParameterInfo() {
return null;
}
}

/** @todo 创建新的树节点 */
class mynode extends DefaultMutableTreeNode{
int id;
int visule; //可见否
int fatherId; //父节点id
int exeAble; //节点是否可执行
String nodeName; //节点名称
String code; //节点编号
String url;

mynode(String nodeName){
super(nodeName);
}
mynode(int id,int visule,int fatherId,int exeAble,
String nodeName,String code,String url){
super(nodeName);
this.id = id;
this.visule = visule;
this.fatherId = fatherId;
this.exeAble = exeAble;
this.nodeName = nodeName;
this.code = code;
this.url = url;
}
}

hqchen 2003-08-24

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这是连接用的

package chen.baseInfo.tree;
import javax.sql.*;
import java.sql.*;

/**
* Title: 
* Description: 
* Copyright: Copyright (c) 2003
* Company: 
* @author not attributable
*
* @version 1.0
*/

public class dbTool {
public static String username;
public static String passwd;
public static String url;
public java.sql.Connection con;

/** @todo 创建连接 */
public dbTool() {
this.username="ms";
this.passwd ="aaaaaaaa";
this.url = "jdbc:oracle:thin:@192.168.0.48:1521:chen";

try{
Class.forName("oracle.jdbc.driver.OracleDriver");
}catch(ClassNotFoundException e){
System.out.println("Could not load the driver");
}
try{
this.con = DriverManager.getConnection(url,username,passwd);

}catch(SQLException e){
e.printStackTrace();
}

}
public java.sql.Connection getCon() {
return con;
}
public String getPasswd() {
return passwd;
}
public String getUrl() {
return url;
}
public String getUsername() {
return username;
}

}

fpwang 2003-08-24

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<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN">
<html>
<head>
<title>SwingSet demo</title>
</head>

<body>
<h1>SwingSet demo</h1>
<applet code=SwingSet2Applet
archive="SwingSet2.jar"
width=695 height=525>
</applet>
</body>
</html>

fpwang 2003-08-24

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hqchen 2003-08-24

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还有，在jbuilder中都正常的
但在ie中有一下错误
//////////////////////////////////////

Java(TM) Plug-in: 版本 1.4.1_02
使用 JRE 版本 1.4.1_02 Java HotSpot(TM) Client VM
用户主目录 = C:\Documents and Settings\Administrator

代理配置：没有代理
Could not load the driver

java.sql.SQLException: No suitable driver
at java.sql.DriverManager.getConnection(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at chen.baseInfo.tree.dbTool.<init>(dbTool.java:33)
at chen.baseInfo.tree.treeinfo.jbInit(treeinfo.java:54)
at chen.baseInfo.tree.treeinfo.init(treeinfo.java:46)
at sun.applet.AppletPanel.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
java.lang.NullPointerException
at chen.baseInfo.tree.treeinfo.jbInit(treeinfo.java:57)
at chen.baseInfo.tree.treeinfo.init(treeinfo.java:46)
at sun.applet.AppletPanel.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)