MVC-OBSERVER模式-会员卡,广州印刷,深圳印刷,印刷公司,名片,彩页,名片设计,设计教程,名片制作,彩色名片,名片模板,贵宾卡,pvc卡,设计欣赏,深圳名片,广州名片,business card design

首页	名片设计 CorelDRAW Illustrator AuotoCAD Painter 其他软件 Photoshop Fireworks Flash

» 彩色名片
» PVC卡
» 彩色磁性卡
» 彩页/画册
» 个性印务
» 彩色不干胶
» 明信片
   » 明信片
   » 彩色书签
   » 门挂
» 其他产品与服务
   » 创业锦囊
   » 办公用品
   » 信封、信纸
   » 便签纸、斜面纸砖
   » 无碳复印纸
   » 海报
   » 大篇幅印刷
   » KT板
   » 海报
   » 横幅

MVC-OBSERVER模式
package mvc_observer;

/**
* 此处插入类型说明。
* 创建日期：(2002-9-4 13:18:39)
* @author：Administrator
*/
import java.awt.*;
import javax.swing.*;
import javax.swing.border.*;
import java.awt.event.*;

import javax.swing.event.*;import java.util.*;public class Controller extends JFrame {
Model model = null;

JScrollPane jScrollPane1 = new JScrollPane();

JTextField jTextField1 = new JTextField();
JTextField jTextField2 = new JTextField();
JLabel jLabel1 = new JLabel();
JLabel jLabel2 = new JLabel();
JLabel jLabel3 = new JLabel();
public Controller() {
try {
jbInit();
} catch (Exception e) {
e.printStackTrace();
}
}

private void jbInit() throws Exception {

ArrayList data = new ArrayList();
Message mess1 = new Message();
mess1.name = "John";
mess1.value = 20;
data.add(mess1);
Message mess2 = new Message();
mess2.name = "Smith";
mess2.value = 14;
data.add(mess2);

model = new Model(data);
viewText = new ViewText(model);
viewGraph = new ViewGraph(model);

// 注重下面两行：向模型中登记它的观察者View1和View2.
model.addObserver(viewText);
model.addObserver(viewGraph);

//model.registerObserver(viewText);
//model.registerObserver(viewGraph);
this.getContentPane().setLayout(null);
jScrollPane1.setBounds(new Rectangle(0, 0, 3, 3));

jTextField1.setText(String.valueOf(((Message)data.get(0)).value));
jTextField1.addCaretListener(new CaretListener() {
public void caretUpdate(CaretEvent e) {
// 假如改变了内容，就可以即时更新 label 显示的内容
textChangeEvent(e);
}
});

jTextField1.setBounds(new Rectangle(80, 254, 52, 30));
jTextField2.setText(String.valueOf(((Message)data.get(1)).value));
jTextField2.addCaretListener(new CaretListener() {
public void caretUpdate(CaretEvent e) {
// 假如改变了内容，就可以即时更新 label 显示的内容
textChangeEvent(e);
}
});
jTextField2.setBounds(new Rectangle(178, 255, 50, 31));
jLabel1.setText("提示信息:");
jLabel1.setBounds(new Rectangle(41, 226, 200, 23));
jLabel2.setText(((Message)data.get(0)).name);
jLabel2.setBounds(new Rectangle(42, 252, 30, 33));
jLabel3.setText(((Message)data.get(1)).name);
jLabel3.setBounds(new Rectangle(140, 252, 90, 33));

viewText.setBounds(new Rectangle(7, 5, 225, 208));
viewGraph.setBounds(new Rectangle(234, 5, 219, 208));

this.getContentPane().add(jScrollPane1, null);
this.getContentPane().add(jTextField2, null);
this.getContentPane().add(jTextField1, null);
this.getContentPane().add(jLabel2, null);
this.getContentPane().add(jLabel3, null);
this.getContentPane().add(jLabel1, null);
this.getContentPane().add(viewText, null);
this.getContentPane().add(viewGraph, null);

}

public static void main(String[] args) {

Controller c = new Controller();
c.setSize(475, 330);
c.setVisible(true);
}

ViewGraph viewGraph = null; ViewText viewText = null; void textChangeEvent(CaretEvent e) {
try{

ArrayList data = new ArrayList();
Message mess1 = new Message();
mess1.name = jLabel2.getText();
mess1.value = Integer.parseInt(jTextField1.getText());
data.add(mess1);
Message mess2 = new Message();
mess2.name = jLabel3.getText();
mess2.value = Integer.parseInt(jTextField2.getText());
data.add(mess2);

int value1 = Integer.parseInt(jTextField1.getText());
int value2 = Integer.parseInt(jTextField2.getText());

if((value1>0&&value1<100)&&(value2>0&&value2<100)){
model.setData(data);

}
else {
jLabel1.setText("提示信息:年龄在1到100之间!");
}

}catch(Exception ex){
//ex.printStackTrace();
jLabel1.setText("提示信息:年龄在1到100之间!");
}

}}
---------------------------------------------------------------------------------------------------------------------
package mvc_observer;

/**
* 此处插入类型说明。
* 创建日期：(2002-9-4 13:18:39)
* @author：Administrator
*/
public class Message {
public int value;
public String name;

}
------------------------------------------------------------------------------------------------------------------
package mvc_observer;

import java.util.*;
/**
* 此处插入类型说明。
* 创建日期：(2002-9-4 13:18:39)
* @author：Administrator
*/
public class Model extends Observable{
private ArrayList data = new ArrayList();

public Model(ArrayList data) {
for (int i = 0; i < data.size(); i++) {
this.data.add(data.get(i));
}
} public ArrayList getData() {
return data;
} public void setData(ArrayList data) {
this.data.clear();
for (int i = 0; i < data.size(); i++) {
this.data.add(data.get(i));
}
setChanged();
notifyObservers("name");
}
}
-------------------------------------------------------------------------------------------------------------
package mvc_observer;

/**
* 此处插入类型说明。
* 创建日期：(2002-9-4 13:18:39)
* @author：Administrator
*/
import javax.swing.*;

import java.awt.*;

import javax.swing.border.*;

import java.util.*;public class ViewGraph extends JPanel implements Observer {
private Model model;

public ViewGraph(Model model) {
try {
this.model = model;
jbInit();
} catch (Exception e) {
e.printStackTrace();
}
}

private void jbInit() throws Exception {
this.setBackground(Color.white);
this.setBorder(new TitledBorder(BorderFactory.createLineBorder(Color.black, 1),"View1"));

}

public void paintComponent(Graphics g) {

super.paintComponent(g);
if (model == null){
return;
}

int x = 20, y = 50;
int h = g.getFontMetrics().getHeight();
int width = this.getWidth();
int height = this.getHeight();
int sy = height / model.getData().size();
int sx = width / 2;
for (int i = 0; i < model.getData().size(); i++) {
Message data = (Message)model.getData().get(i);
int value = data.value;
int dx = 3;
int r = 3;
Color c = new Color((int) (255 * Math.random()), (int)(255 * Math.random()),(int)(255 * Math.random()));
int cx = sx;
int cy = y + i * sy;
for (int j = 0; j < value; j++) {
g.setColor(c);
g.drawOval(cx, cy, r, r);
r += dx;
}
g.drawString(data.name, 25, cy);
}
}

// 当模型数据发生改变时，会自动调用此方式来刷新图形

public void update(Observable obj,Object args) {
/**@todo: Implement this Observer method*/
this.model = model;
repaint();
}}
-------------------------------------------------------------------------------------------------------------
package mvc_observer;

/**
* 此处插入类型说明。
* 创建日期：(2002-9-4 13:18:39)
* @author：Administrator
*/
import javax.swing.*;

import java.awt.*;

import javax.swing.border.*;

import java.util.*;public class ViewText extends JPanel implements Observer {
private Model model;

public ViewText(Model model) {
try {
this.model = model;
jbInit();
} catch (Exception e) {
e.printStackTrace();
}
}

private void jbInit() throws Exception {
this.setBackground(Color.white);
this.setBorder(new TitledBorder(BorderFactory.createLineBorder(Color.black, 1), "View1"));
}

public void paintComponent(Graphics g) {
super.paintComponent(g);
if (model == null){
return;
}
int x = 20, y = 50;
int h = g.getFontMetrics().getHeight();
for (int i = 0; i < model.getData().size(); i++) {
Message data = (Message)model.getData().get(i);
g.drawString(data.name, x, y);
y += h;
g.drawString(String.valueOf(data.value), x, y);
y += h;
}
}

public void update(Observable obj,Object args) {
/**@todo: Implement this Observer method*/
this.model = model;
repaint();
}
}

返回类别: 教程
上一教程: 以前编写JSP网站时写的一些工具函数
下一教程: 如何使用JSP开发WEBMAIL系统

您可以阅读与"MVC-OBSERVER模式"相关的教程:
· 利用Observer模式解决组件间通信问题
· 基于MVC模式的Struts框架概述
· OBSERVER模式
· MVC模式
· J2EE MVC模式JSF与STRUTS的异同


	快精灵印艺坊版权所有	首页会员中心在线印刷在线编辑付款方式索取样品设计指南连锁门店网站地图关于我们友情链接