Graphics2渲染图像导出的3种方式

写出来主要是希望遇到大神指点迷津，这自己边试边学得出来得经验来得太慢了，而且累。有没有更实用的资料或者书籍介绍java画图中，JFrame,JPanel,JComponent,Graphics,Graphices2D,Graphices3D,Shape,这些区别与联系的实用的资料书，本人将不胜感激！！！

其实主要是想用JComponent这个组件，里面有些画图方法比较方便。但是返回的对象又不知道怎么做处理导出，所以就尝试，实验出了这3种导出方法。
1.通过导出jfream窗口图片（这种方式是jfream窗口和图片保存都会做显示，jfream的黑框背景会显示，求大神指点）

package com.dasenlin.test;import java.awt.Container;import java.awt.EventQueue;import java.awt.Graphics2D;import java.awt.image.BufferedImage;import java.io.File;import java.io.IOException;import javax.imageio.ImageIO;import javax.swing.JFrame;import com.dasenlin.util.MyFrame;public class TestJframePic {    public static final String DEST4 = "C:/Users/Toshiba/Desktop/testjframe.png";    /**     * @param args     */    public static void main(String[] args) {        /*         * 在 AWT 的事件队列线程中创建窗口和组件, 确保线程安全,         * 即 组件创建、绘制、事件响应 需要处于同一线程。         */        EventQueue.invokeLater(new Runnable() {            @Override            public void run() {                // 创建窗口对象                MyFrame frame = new MyFrame("折线",250,300);                // 显示窗口(必须显示，否则就是黑框，还有就是这个有点问题的就是，jfream的黑框背景会显示，求大神指点)                frame.setVisible(true);                savePic(frame);            }        });    }    public static void savePic(JFrame jf){          //得到窗口内容面板          Container content=jf.getContentPane();          //创建缓冲图片对象          BufferedImage img=new BufferedImage( jf.getWidth(),jf.getHeight(),BufferedImage.TYPE_INT_RGB);          //得到图形对象          Graphics2D g2d = img.createGraphics();          //将窗口内容面板输出到图形对象中          content.printAll(g2d);          //保存为图片          try{            ImageIO.write(img, "jpg", new File( DEST4));        }catch (IOException e){            e.printStackTrace();        }        //释放图形对象          g2d.dispose();      }  }

2.通过导出Jpanel图片(这种方式可以不用考虑jfream的黑框背景，甚至不显示jfream也能导出)

package com.dasenlin.util;import java.awt.Graphics2D;import java.awt.image.BufferedImage;import java.io.File;import java.io.IOException;import javax.imageio.ImageIO;import javax.swing.JFrame;import javax.swing.WindowConstants;/** *  * @author Toshiba * */public class MyFrame extends JFrame {    /**     *      */    private static final long serialVersionUID = 1L;    public static final String DEST4 = "C:/Users/Toshiba/Desktop/testjframe.png";    public MyFrame(String title,Integer windowW,Integer windowH) {        super();        initFrame(title,windowW,windowH);    }    private void initFrame(String title,Integer windowW,Integer windowH) {        // 设置 窗口标题 和 窗口大小        setTitle(title);        setSize(windowW, windowH);        // 设置窗口关闭按钮的默认操作(点击关闭时退出进程)        setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);        // 把窗口位置设置到屏幕的中心        setLocationRelativeTo(null);        // 设置窗口的内容面板        MyPanel panel = new MyPanel(this);        setContentPane(panel);        //自己的JPanel        // 必须要有大小        panel.setSize(windowW, windowH);        BufferedImage image = new BufferedImage(windowW, windowH, BufferedImage.TYPE_INT_RGB);        Graphics2D g2 = image.createGraphics();        panel.paint(g2);        try {        ImageIO.write(image, "jpg", new File(DEST4));        } catch (IOException e) {        e.printStackTrace();        }    }}

直接graphics2D中用graphics的画图方法导出

public static void savePic(JFrame jf){  BufferedImage images= DepParserSvgUtil.depParserSvg(dataList);    try{           ImageIO.write(images, "PNG", new File( DEST4));       }catch (IOException e){           e.printStackTrace();       }  }      public static BufferedImage depParserSvg(List<Map<String,Object>> yicunList){BufferedImage bi = new BufferedImage(DEFAULT_W, DEFAULT_H, BufferedImage.TYPE_INT_ARGB);        Graphics2D g2d = bi.createGraphics();        //设置画笔(设置背景)        g2d.setPaint(Color.WHITE);        g2d.fillRect(5, 5, DEFAULT_W, DEFAULT_H);        //draw string        g2d.setPaint(Color.BLACK);        Font f = new Font("宋体", Font.PLAIN, ZH_WORD_WIDTH);        g2d.setFont(f);         FontRenderContext context = g2d.getFontRenderContext();        for(int w=0; w<yicunList.size();w++){            String word = yicunList.get(w).get("word").toString();            String mark = yicunList.get(w).get("id").toString()+"|"+yicunList.get(w).get("post").toString();            String lable = yicunList.get(w).get("dep_type").toString();            float wordx = (float) WORDS_TRANSLATE.get(w).get("x");            float wordy = (float) WORDS_TRANSLATE.get(w).get("y");            g2d.drawString(word, wordx, wordy);            Rectangle2D bounds = f.getStringBounds(word, context);            g2d.draw(bounds);             double wordW=bounds.getWidth();//文本宽度              double wordH=bounds.getHeight();//文本高度              double ascent=-bounds.getY();//文本上坡度             LineMetrics metrics=f.getLineMetrics(word, context);             float descent=metrics.getDescent();//文本下坡度              float leading=metrics.getLeading();//文本行距             float markx = wordx;            float marky = (float) (wordy+descent+leading+wordH);            g2d.drawString(mark, markx, marky);             bounds = f.getStringBounds(mark, context);            g2d.draw(bounds);            double markW=bounds.getWidth();//文本宽度              //画边框矩形            double borderW = (double) Math.max(wordW, markW);            Rectangle2D msgRect=new Rectangle2D.Double(wordx,wordy-ascent,borderW,wordH*2+descent*2+leading*2);//包围文本的矩形              g2d.draw(msgRect);             //画关系线          int edge1x =  EDGE_PATH.get(w).get(0).get("x");          int edge1y =  EDGE_PATH.get(w).get(0).get("y");          int edge2x =  EDGE_PATH.get(w).get(1).get("x");          int edge2y =  EDGE_PATH.get(w).get(1).get("y");          int edge3x =  EDGE_PATH.get(w).get(2).get("x");          int edge3y =  EDGE_PATH.get(w).get(2).get("y");          int edge4x =  EDGE_PATH.get(w).get(3).get("x");          int edge4y =  EDGE_PATH.get(w).get(3).get("y");          g2d.drawLine(edge1x, edge1y, edge2x, edge2y);          g2d.drawLine(edge2x, edge2y, edge3x, edge3y);          g2d.drawLine(edge3x, edge3y, edge4x, edge4y);         //画箭头         int rectangle1x =edge4x-5;         int rectangle1y =edge4y;         int rectangle2x =edge4x+5;         int rectangle2y =edge4y;         int rectangle3x =edge4x;         int rectangle3y =edge4y+5;         g2d.drawLine(rectangle1x, rectangle1y, rectangle2x, rectangle2y);         g2d.drawLine(rectangle2x, rectangle2y, rectangle3x, rectangle3y);         g2d.drawLine(rectangle3x, rectangle3y, rectangle1x, rectangle1y);         //画lable         int lablex = EDGE_LABLE_INFO.get(w).get("x");         int labley = EDGE_LABLE_INFO.get(w).get("y");         int lableH = EDGE_LABLE_INFO.get(w).get("height");         int lableW = EDGE_LABLE_INFO.get(w).get("width");         f = new Font("SansSerif",Font.BOLD,ONE_LABLE_HEIGHT);         context = g2d.getFontRenderContext();         bounds = f.getStringBounds(lable,context);         g2d.setFont(f);         g2d.clearRect((int)(lablex*1.05 - bounds.getCenterX()), (int)(labley - (lableH/2) - bounds.getCenterY()), lableW, lableH);         g2d.drawString(lable, (float) (lablex*1.05 - bounds.getCenterX()), (float) (labley - (lableH/2) - bounds.getCenterY()));        }        /****************Graphics2DDrawEnd*****************/        g2d.dispose();//销毁资源        return bi;}

综合上述，实用继承Jpanel并输出图片的方式比较好，可以兼顾jfream的前端输出，可以做后台输出。还可以实用组件的一些好用方法。代码结构比较清晰。
以下是Jpanel中画图的代码

package com.dasenlin.util;import java.awt.BasicStroke;import java.awt.Color;import java.awt.Font;import java.awt.Graphics;import java.awt.Graphics2D;import java.awt.Image;import java.awt.Paint;import java.awt.RenderingHints;import java.awt.Toolkit;import javax.swing.JPanel;public class MyPanel extends JPanel {    /**     *      */    private static final long serialVersionUID = 1L;     private MyFrame frame;     public MyPanel(MyFrame frame) {         this.frame = frame;     }     /**      * 绘制面板的内容: 创建 JPanel 后会调用一次该方法绘制内容,      * 之后如果数据改变需要重新绘制, 可调用 updateUI() 方法触发      * 系统再次调用该方法绘制更新 JPanel 的内容。      */     @Override     protected void paintComponent(Graphics g) {         super.paintComponent(g);         // 重新调用 Graphics 的绘制方法绘制时将自动擦除旧的内容         /* 自行打开下面注释查看各绘制效果 */         // 1. 线段 / 折线         drawLine(g);         // 2. 矩形 / 多边形         // drawRect(g);         // 3. 圆弧 / 扇形         // drawArc(g);         // 4. 椭圆         // drawOval(g);         // 5. 图片         // drawImage(g);         // 6. 文本         // drawString(g);     }     /**      * 1. 线段 / 折线      */     private void drawLine(Graphics g) {         frame.setTitle("1. 线段 / 折线");         // 创建 Graphics 的副本, 需要改变 Graphics 的参数,         // 这里必须使用副本, 避免影响到 Graphics 原有的设置         Graphics2D g2d = (Graphics2D) g.create();         // 抗锯齿         g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);         // 设置画笔颜色         g2d.setColor(Color.RED);   }

写出来主要是希望遇到大神指点迷津，这自己边试边学得出来得经验来得太慢了，而且累。有没有更实用的资料或者书籍介绍java画图中，JFrame,JPanel,JComponent,Graphics,Graphices2d,Graphices3D,Shape,这些区别与联系的资料书，本人将不胜感激！！！