java编程中结果的可视化表示
作界面很简单，用NetBeans的可视化设计工具拖拉一下就行，剩下就是一些事件响应代码了，设计工具的对应属性里双击就能帮你生成接口。
网上有别人已经写好的一个GraphViz.java类。java可以直接调用这个类实现画图功能，但是使用这个类的前提是你的电脑已经装了GraphViz软件，你可以在http://www.graphviz.org/Gallery.php下载windows版本，装完后，找到dot.exe所在的路径，我电脑上的是D:\Program Files\Graphviz2.30\bin\dot.exe,
将GraphViz.java中的这一路径改成你电脑上的路径，基本上就可以用了。
package Graphoutput;
// GraphViz.java - a simple API to call dot from Java programs
/*$Id$*/
/*
******************************************************************************
* *
* (c) Copyright 2003 Laszlo Szathmary *
* *
* This program is free software; you can redistribute it and/or modify it *
* under the terms of the GNU Lesser General Public License as published by *
* the Free Software Foundation; either version 2.1 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, but *
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY *
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public *
* License for more details. *
* *
* You should have received a copy of the GNU Lesser General Public License *
* along with this program; if not, write to the Free Software Foundation, *
* Inc., 675 Mass Ave, Cambridge, MA 02139, USA. *
* *
******************************************************************************
*/
import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.InputStreamReader;
/**
*
* Purpose: GraphViz Java API
*
*
* Description:
* With this Java class you can simply call dot
* from your Java programs
* Example usage:
*
*
* GraphViz gv = new GraphViz();
* gv.addln(gv.start_graph());
* gv.addln("A -> B;");
* gv.addln("A -> C;");
* gv.addln(gv.end_graph());
* System.out.println(gv.getDotSource());
*
* String type = "gif";
* File out = new File("out." + type); // out.gif in this example
* gv.writeGraphToFile( gv.getGraph( gv.getDotSource(), type ), out );
*
*
*
*
*
* @version v0.4, 2011/02/05 (February) -- Patch of Keheliya Gallaba is added. Now you
* can specify the type of the output file: gif, dot, fig, pdf, ps, svg, png, etc.
* @version v0.3, 2010/11/29 (November) -- Windows support + ability
* to read the graph from a text file
* @version v0.2, 2010/07/22 (July) -- bug fix
* @version v0.1, 2003/12/04 (December) -- first release
* @author Laszlo Szathmary (jabba.laci@gmail.com)
*/
public class GraphViz
{
/**
* The dir. where temporary files will be created.
*/
//private static String TEMP_DIR = "/tmp"; // Linux
private static String TEMP_DIR = "c:/temp"; // Windows
/**
* Where is your dot program located? It will be called externally.
*/
// private static String DOT = "/usr/bin/dot"; // Linux
private static String DOT = "D:\\Program Files\\Graphviz2.30\\bin\\dot.exe"; // Windows
/**
* The source of the graph written in dot language.
*/
private StringBuilder graph = new StringBuilder();
/**
* Constructor: creates a new GraphViz object that will contain
* a graph.
*/
public GraphViz() {
}
/**
* Returns the graph's source description in dot language.
* @return Source of the graph in dot language.
*/
public String getDotSource() {
return graph.toString();
}
/**
* Adds a string to the graph's source (without newline).
*/
public void add(String line) {
graph.append(line);
}
/**
* Adds a string to the graph's source (with newline).
*/
public void addln(String line) {
graph.append(line + "
");
}
/**
* Adds a newline to the graph's source.
*/
public void addln() {
graph.append('
');
}
/**
* Returns the graph as an image in binary format.
* @param dot_source Source of the graph to be drawn.
* @param type Type of the output image to be produced, e.g.: gif, dot, fig, pdf, ps, svg, png.
* @return A byte array containing the image of the graph.
*/
public byte[] getGraph(String dot_source, String type)
{
File dot;
byte[] img_stream = null;
try {
dot = writeDotSourceToFile(dot_source);
if (dot != null)
{
img_stream = get_img_stream(dot, type);
if (dot.delete() == false)
System.err.println("Warning: " + dot.getAbsolutePath() + " could not be deleted!");
return img_stream;
}
return null;
} catch (java.io.IOException ioe) { return null; }
}
/**
* Writes the graph's image in a file.
* @param img A byte array containing the image of the graph.
* @param file Name of the file to where we want to write.
* @return Success: 1, Failure: -1
*/
public int writeGraphToFile(byte[] img, String file)
{
File to = new File(file);
return writeGraphToFile(img, to);
}
/**
* Writes the graph's image in a file.
* @param img A byte array containing the image of the graph.
* @param to A File object to where we want to write.
* @return Success: 1, Failure: -1
*/
public int writeGraphToFile(byte[] img, File to)
{
try {
FileOutputStream fos = new FileOutputStream(to);
fos.write(img);
fos.close();
} catch (java.io.IOException ioe) { ioe.printStackTrace();return -1; }
return 1;
}
/**
* It will call the external dot program, and return the image in
* binary format.
* @param dot Source of the graph (in dot language).
* @param type Type of the output image to be produced, e.g.: gif, dot, fig, pdf, ps, svg, png.
* @return The image of the graph in .gif format.
*/
private byte[] get_img_stream(File dot, String type)
{
File img;
byte[] img_stream = null;
try {
img = File.createTempFile("graph_", "."+type, new File(GraphViz.TEMP_DIR));
Runtime rt = Runtime.getRuntime();
// patch by Mike Chenault
String[] args = {DOT, "-T"+type, dot.getAbsolutePath(), "-o", img.getAbsolutePath()};
Process p = rt.exec(args);
p.waitFor();
FileInputStream in = new FileInputStream(img.getAbsolutePath());
img_stream = new byte[in.available()];
in.read(img_stream);
// Close it if we need to
if( in != null ) in.close();
if (img.delete() == false)
System.err.println("Warning: " + img.getAbsolutePath() + " could not be deleted!");
}
catch (java.io.IOException ioe) {
System.err.println("Error: in I/O processing of tempfile in dir " + GraphViz.TEMP_DIR+"
");
System.err.println(" or in calling external command");
ioe.printStackTrace();
}
catch (java.lang.InterruptedException ie) {
System.err.println("Error: the execution of the external program was interrupted");
ie.printStackTrace();
}
return img_stream; }
/**
* Writes the source of the graph in a file, and returns the written file
* as a File object.
* @param str Source of the graph (in dot language).
* @return The file (as a File object) that contains the source of the graph.
*/
public File writeDotSourceToFile(String str) throws java.io.IOException
{
File temp;
try {
temp = File.createTempFile("graph_", ".dot.tmp", new File(GraphViz.TEMP_DIR));
FileWriter fout = new FileWriter(temp);
fout.write(str);
fout.close();
}
catch (Exception e) {
System.err.println("Error: I/O error while writing the dot source to temp file!");
return null;
}
return temp;
}
/**
* Returns a string that is used to start a graph.
* @return A string to open a graph.
*/
public String start_graph() {
return "digraph G {" ;
}
/**
* Returns a string that is used to end a graph.
* @return A string to close a graph.
*/
public String end_graph() {
return "}";
}
/**
* Read a DOT graph from a text file.
*
* @param input Input text file containing the DOT graph
* source.
*/
public void readSource(String input)
{
StringBuilder sb = new StringBuilder();
try
{
FileInputStream fis = new FileInputStream(input);
DataInputStream dis = new DataInputStream(fis);
BufferedReader br = new BufferedReader(new InputStreamReader(dis));
String line;
while ((line = br.readLine()) != null) {
sb.append(line);
}
dis.close();
}
catch (Exception e) {
System.err.println("Error: " + e.getMessage());
}
this.graph = sb;
}
} // end of class GraphViz
通过下面这个类调用graphViz.java
import java.io.File;
public class Proba
{
public static void main(String[] args)
{
Proba p = new Proba();
p.start();
// p.start2();
}
/**
* Construct a DOT graph in memory, convert it
* to image and store the image in the file system.
*/
private void start()
{
GraphViz gv = new GraphViz();
gv.addln(gv.start_graph());
gv.addln("A -> B;");
gv.addln("A -> C;");
gv.addln(gv.end_graph());
System.out.println(gv.getDotSource());
String type = "gif";
// String type = "dot";
// String type = "fig"; // open with xfig
// String type = "pdf";
// String type = "ps";
// String type = "svg"; // open with inkscape
// String type = "png";
// String type = "plain";
File out = new File("/tmp/out." + type); // Linux
// File out = new File("c:/eclipse.ws/graphviz-java-api/out." + type); // Windows
gv.writeGraphToFile( gv.getGraph( gv.getDotSource(), type ), out );
}
/**
* Read the DOT source from a file,
* convert to image and store the image in the file system.
*/
private void start2()
{
// String dir = "/home/jabba/eclipse2/laszlo.sajat/graphviz-java-api"; // Linux
// String input = dir + "/sample/simple.dot";
String input = "c:/eclipse.ws/graphviz-java-api/sample/simple.dot"; // Windows
GraphViz gv = new GraphViz();
gv.readSource(input);
System.out.println(gv.getDotSource());
String type = "gif";
// String type = "dot";
// String type = "fig"; // open with xfig
// String type = "pdf";
// String type = "ps";
// String type = "svg"; // open with inkscape
// String type = "png";
// String type = "plain";
File out = new File("/tmp/simple." + type); // Linux
// File out = new File("c:/eclipse.ws/graphviz-java-api/tmp/simple." + type); // Windows
gv.writeGraphToFile( gv.getGraph( gv.getDotSource(), type ), out );
}
}
可以 javaSwing 编程 给你个例子
package com.xu.pcchart;
import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.net.Socket;
import java.sql.Date;
import java.text.SimpleDateFormat;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
public class Clinet extends JFrame implements Runnable, ActionListener
{
private static final long serialVersionUID = 1L;
public static final int PORT = 8521;
//声明套接字对象
Socket socket;
//声明线程对象
Thread thread1;
//声明客户端数据输入输出流
DataInputStream in;
DataOutputStream out;
//是否登录的标记
boolean flag = false;
//声明字符串，name存储用户名，chat_txt存储发送的信息，chat_in存储从服务器接收到的信息
String name,chat_txt,chat_in;
String ip = null;
/**
* 服务器端主程序负责界面以及服务端主线程ServerThread的启动
* 服务主线程ServerThread又产生BroadCast及ClientThread线程
*/
//建立服务器端主界面所用到的布局方式
BorderLayout borderlayout1 = new BorderLayout();
BorderLayout borderlayout2 = new BorderLayout();
BorderLayout borderlayout3 = new BorderLayout();
//创建面板
JPanel jPanel1 = new JPanel();
JPanel jPanel2 = new JPanel();
JPanel jPanel3 = new JPanel();
JPanel jPanel4 = new JPanel();
//创建按钮
JButton jButton1 = new JButton();
JButton jButton2 = new JButton();
JButton jButton3 = new JButton("发送");
JScrollPane jScrollpanel = new JScrollPane();
//创建服务器端接收信息文本框
static JTextArea jTextArea1 = new JTextArea();
boolean bool = false,start = false;
JLabel usernamelable = new JLabel("用户名");
JTextField usernametext = new JTextField(10);
JTextField sendmsgText = new JTextField(20);
JLabel lable = new JLabel("服务器地址");
JTextField addresslable =new JTextField("192.168.1.198",10);
//声明ServerThread线程对象
ServerThread serverThread;
Thread thread;
//构造函数 ，生成客户端界面
public Clinet()
{
//设置内容分面板布局方式
getContentPane().setLayout(borderlayout1);
//初始化组件
jButton1.setText("进入聊天室");
jButton1.addActionListener(this);
jButton2.setText("退出聊天室");
jButton2.addActionListener(this);
jButton3.addActionListener(this);
//初始化JPanel1面板对象，并向其加入组件
this.getContentPane().add(jPanel1,java.awt.BorderLayout.NORTH);
jPanel1.add(usernamelable);
jPanel1.add(usernametext);
jPanel1.add(jButton1);
jPanel1.add(jButton2);
//初始化jpanel2面板对象，并向其加入组件
jTextArea1.setText("");
jPanel2.setLayout(borderlayout2);
jPanel2.add(jScrollpanel,java.awt.BorderLayout.CENTER);
jScrollpanel.getViewport().add(jTextArea1);
this.getContentPane().add(jPanel2,java.awt.BorderLayout.CENTER);
jPanel4.add(lable);
jPanel4.add(addresslable);
getContentPane().add(jPanel4,java.awt.BorderLayout.EAST);
getContentPane().add(jPanel3,java.awt.BorderLayout.SOUTH);
jPanel3.add(sendmsgText);
jPanel3.add(jButton3);
this.setSize(400,400);
this.setVisible(true);
}
public static void main(String[] args)
{
Clinet server = new Clinet ();
server.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
//界面按钮的事件处理
@Override
public void actionPerformed(ActionEvent e)
{
//进入聊天室的按钮处理
if(e.getSource() == jButton1)
{
//获取用户名
name = usernametext.getText();
//获取服务器IP
ip = addresslable.getText();
//判断用户名是否有效及ip是否为空
if(name!="用户名输入"&&ip != null)
{
try
{
//创建socket对象
socket = new Socket(ip,PORT);
//创建客户端数据输入输出流，用于对服务器端发送或接收数据
in = new DataInputStream(socket.getInputStream());
out = new DataOutputStream(socket.getOutputStream());
Date now = new Date(System.currentTimeMillis());
SimpleDateFormat format = new SimpleDateFormat("hh:mm:ss");
String nowStr = format.format(now);
out.writeUTF("$$"+name+" "+nowStr+" 上线了！");
} catch (Exception e2)
{
e2.printStackTrace();
}
thread = new Thread(this);
//开启线程，监听服务器端是否有消息
thread.start();
//说明已经登录成功
flag = true;
}
}
//发送按钮的处理
else if(e.getSource() == jButton3)
{
//获取客户端输入的发言内容
chat_txt = sendmsgText.getText();
if(chat_txt != null)
{
Date now = new Date(System.currentTimeMillis());
SimpleDateFormat format = new SimpleDateFormat("hh:mm:ss");
String nowStr = format.format(now);
//发言 向服务器发送发言的信息
try
{
out.writeUTF("^-^"+usernametext.getText()+" "+nowStr+" 说
"+chat_txt);
} catch (Exception e2)
{
// TODO: handle exception
}
}
else
{
try
{
out.writeUTF("亲说话");;
} catch (Exception e2)
{
// TODO: handle exception
}
}
}
//退出聊天室按钮事件处理
else if(e.getSource() == jButton2)
{
if(flag == true)
{
try
{
out.writeUTF("##"+name+"下线了！");
out.close();
in.close();
socket.close();
} catch (Exception e2)
{
// TODO: handle exception
}
}
flag = false;
this.setVisible(false);
}
}
//客户端线程启动后的动作
@Override
public void run()
{
//循环执行 作用是一直监听服务器端是否有消息
while(true)
{
try
{
//读取服务器发送来的数据
chat_in = in.readUTF();
//将消息显示在客户端的对话窗口中
jTextArea1.append(chat_in+"
");
} catch (Exception e)
{
// TODO: handle exception
}
}
}
}
运行结果
具体介绍请看java的 JDK 文档
插件不清楚.
不过你可以尝试把数据设置到Jquery中的Jtree中.
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