1.VerifyCode 類:
1 package com.HRuinger.enity;
2
3 import java.awt.BasicStroke;
4 import java.awt.Color;
5 import java.awt.Font;
6 import java.awt.Graphics2D;
7 import java.awt.image.BufferedImage;
8 import java.io.IOException;
9 import java.io.OutputStream;
10 import java.util.Random;
11
12 import javax.imageio.ImageIO;
13
14 public class VerifyCode {
15 private int w = 85;
16 private int h = 35;
17 private Random r = new Random();
18 // {"宋體", "華文楷體", "黑體", "華文新魏", "華文隸書", "微軟雅黑", "楷體_GB2312"}
19 private String[] fontNames = {"宋體", "華文楷體", "黑體", "微軟雅黑", "楷體_GB2312"};
20 // 可選字符
21 private String codes = "23456789abcdefghjkmnopqrstuvwxyzABCDEFGHJKMNPQRSTUVWXYZ";
22 // 背景色
23 private Color bgColor = new Color(255, 255, 255);
24 // 驗證碼上的文本
25 private String text ;
26
27 // 生成隨機的顏色
28 private Color randomColor () {
29 int red = r.nextInt(150);
30 int green = r.nextInt(150);
31 int blue = r.nextInt(150);
32 return new Color(red, green, blue);
33 }
34
35 // 生成隨機的字體
36 private Font randomFont () {
37 int index = r.nextInt(fontNames.length);
38 String fontName = fontNames[index]; // 生成隨機的字體名稱
39 int style = r.nextInt(4); // 生成隨機的樣式, 0(無樣式), 1(粗體), 2(斜體), 3(粗體+斜體)
40 int size = r.nextInt(5) + 26; // 生成隨機字號, 24 ~ 28
41 return new Font(fontName, style, size);
42 }
43
44 // 畫干擾線
45 private void drawLine (BufferedImage image) {
46 int num = 3; // 一共畫3條
47 Graphics2D g2 = (Graphics2D)image.getGraphics();
48 for( int i = 0; i < num; i++) { // 生成兩個點的坐標,即4個值
49 int x1 = r.nextInt(w);
50 int y1 = r.nextInt(h);
51 int x2 = r.nextInt(w);
52 int y2 = r.nextInt(h);
53 g2.setStroke( new BasicStroke(1.5F));
54 g2.setColor(Color.BLUE); // 干擾線是藍色
55 g2.drawLine(x1, y1, x2, y2); // 畫線
56 }
57 }
58
59 // 隨機生成一個字符
60 private char randomChar () {
61 int index = r.nextInt(codes.length());
62 return codes.charAt(index);
63 }
64
65 // 創建BufferedImage
66 private BufferedImage createImage () {
67 BufferedImage image = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
68 Graphics2D g2 = (Graphics2D)image.getGraphics();
69 g2.setColor( this.bgColor);
70 g2.fillRect(0, 0, w, h);
71 return image;
72 }
73
74 // 調用這個方法得到驗證碼
75 public BufferedImage getImage () {
76 BufferedImage image = createImage(); // 創建圖片緩沖區
77 Graphics2D g2 = (Graphics2D)image.getGraphics(); // 得到繪制環境
78 StringBuilder sb = new StringBuilder(); // 用來裝載生成的驗證碼文本
79 // 向圖片中畫4個字符
80 for( int i = 0; i < 4; i++) { // 循環四次,每次生成一個字符
81 String s = randomChar() + ""; // 隨機生成一個字母
82 sb.append(s); // 把字母添加到sb中
83 float x = i * 1.0F * w / 4; // 設置當前字符的x軸坐標
84 g2.setFont(randomFont()); // 設置隨機字體
85 g2.setColor(randomColor()); // 設置隨機顏色
86 g2.drawString(s, x, h-5); // 畫圖
87 }
88 this.text = sb.toString(); // 把生成的字符串賦給了this.text
89 drawLine(image); // 添加干擾線
90 return image;
91 }
92
93 // 返回驗證碼圖片上的文本
94 public String getText () {
95 return text;
96 }
97
98 // 保存圖片到指定的輸出流
99 public static void output (BufferedImage image, OutputStream out)
100 throws IOException {
101 ImageIO.write(image, "jpg", out);
102 }
103 }
3 import java.awt.BasicStroke;
4 import java.awt.Color;
5 import java.awt.Font;
6 import java.awt.Graphics2D;
7 import java.awt.image.BufferedImage;
8 import java.io.IOException;
9 import java.io.OutputStream;
10 import java.util.Random;
11
12 import javax.imageio.ImageIO;
13
14 public class VerifyCode {
15 private int w = 85;
16 private int h = 35;
17 private Random r = new Random();
18 // {"宋體", "華文楷體", "黑體", "華文新魏", "華文隸書", "微軟雅黑", "楷體_GB2312"}
19 private String[] fontNames = {"宋體", "華文楷體", "黑體", "微軟雅黑", "楷體_GB2312"};
20 // 可選字符
21 private String codes = "23456789abcdefghjkmnopqrstuvwxyzABCDEFGHJKMNPQRSTUVWXYZ";
22 // 背景色
23 private Color bgColor = new Color(255, 255, 255);
24 // 驗證碼上的文本
25 private String text ;
26
27 // 生成隨機的顏色
28 private Color randomColor () {
29 int red = r.nextInt(150);
30 int green = r.nextInt(150);
31 int blue = r.nextInt(150);
32 return new Color(red, green, blue);
33 }
34
35 // 生成隨機的字體
36 private Font randomFont () {
37 int index = r.nextInt(fontNames.length);
38 String fontName = fontNames[index]; // 生成隨機的字體名稱
39 int style = r.nextInt(4); // 生成隨機的樣式, 0(無樣式), 1(粗體), 2(斜體), 3(粗體+斜體)
40 int size = r.nextInt(5) + 26; // 生成隨機字號, 24 ~ 28
41 return new Font(fontName, style, size);
42 }
43
44 // 畫干擾線
45 private void drawLine (BufferedImage image) {
46 int num = 3; // 一共畫3條
47 Graphics2D g2 = (Graphics2D)image.getGraphics();
48 for( int i = 0; i < num; i++) { // 生成兩個點的坐標,即4個值
49 int x1 = r.nextInt(w);
50 int y1 = r.nextInt(h);
51 int x2 = r.nextInt(w);
52 int y2 = r.nextInt(h);
53 g2.setStroke( new BasicStroke(1.5F));
54 g2.setColor(Color.BLUE); // 干擾線是藍色
55 g2.drawLine(x1, y1, x2, y2); // 畫線
56 }
57 }
58
59 // 隨機生成一個字符
60 private char randomChar () {
61 int index = r.nextInt(codes.length());
62 return codes.charAt(index);
63 }
64
65 // 創建BufferedImage
66 private BufferedImage createImage () {
67 BufferedImage image = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
68 Graphics2D g2 = (Graphics2D)image.getGraphics();
69 g2.setColor( this.bgColor);
70 g2.fillRect(0, 0, w, h);
71 return image;
72 }
73
74 // 調用這個方法得到驗證碼
75 public BufferedImage getImage () {
76 BufferedImage image = createImage(); // 創建圖片緩沖區
77 Graphics2D g2 = (Graphics2D)image.getGraphics(); // 得到繪制環境
78 StringBuilder sb = new StringBuilder(); // 用來裝載生成的驗證碼文本
79 // 向圖片中畫4個字符
80 for( int i = 0; i < 4; i++) { // 循環四次,每次生成一個字符
81 String s = randomChar() + ""; // 隨機生成一個字母
82 sb.append(s); // 把字母添加到sb中
83 float x = i * 1.0F * w / 4; // 設置當前字符的x軸坐標
84 g2.setFont(randomFont()); // 設置隨機字體
85 g2.setColor(randomColor()); // 設置隨機顏色
86 g2.drawString(s, x, h-5); // 畫圖
87 }
88 this.text = sb.toString(); // 把生成的字符串賦給了this.text
89 drawLine(image); // 添加干擾線
90 return image;
91 }
92
93 // 返回驗證碼圖片上的文本
94 public String getText () {
95 return text;
96 }
97
98 // 保存圖片到指定的輸出流
99 public static void output (BufferedImage image, OutputStream out)
100 throws IOException {
101 ImageIO.write(image, "jpg", out);
102 }
103 }
2.ImageTest類
1 package com.HRuinger.enity;
2
3 import java.awt.Color;
4 import java.awt.Graphics;
5 import java.awt.Graphics2D;
6 import java.awt.image.BufferedImage;
7 import java.io.FileNotFoundException;
8 import java.io.FileOutputStream;
9 import java.io.IOException;
10
11 import javax.imageio.ImageIO;
12
13 public class ImageTest {
14
15 public void fun1() throws FileNotFoundException, IOException{
16 /*
17 * 1. 創建圖片緩沖區
18 * 2. 設置其寬高
19 * 3. 得到這個圖片的繪制環境(得到畫筆)
20 * 4. 保存起來
21 */
22 BufferedImage bi = new BufferedImage(85, 35, BufferedImage.TYPE_INT_RGB);
23 Graphics2D g = (Graphics2D)bi.getGraphics(); // 得到繪制環境
24 g.setColor(Color.WHITE); // 把環境設置為白色
25 g.fillRect(0, 0, 70, 35); // 填充矩形!填充矩形,從0,0點開始,寬70,高35,即整個圖片,即為圖片設置背景色
26 g.setColor(Color.RED); // 把環境設置為紅色
27 g.drawString("Hello", 2,35-2); // 向圖片上寫入字符串,其中2,2表示x,y軸的坐標
28
29 }
30 public void fun2() throws FileNotFoundException, IOException{
31 VerifyCode vc = new VerifyCode(); // 創建VerifyCode類的對象
32 BufferedImage bi = vc.getImage(); // 調用getImge()方法獲得一個BufferedImage對象
33 VerifyCode.output(bi, new FileOutputStream("WebRoot/img/yzm.jpg")); // 調用靜態方法output()方法將圖片保存在文件輸出流中
34 System.out.println(vc.getText()); // 在控制台上打印驗證碼的文本值
35 }
36 }
3 import java.awt.Color;
4 import java.awt.Graphics;
5 import java.awt.Graphics2D;
6 import java.awt.image.BufferedImage;
7 import java.io.FileNotFoundException;
8 import java.io.FileOutputStream;
9 import java.io.IOException;
10
11 import javax.imageio.ImageIO;
12
13 public class ImageTest {
14
15 public void fun1() throws FileNotFoundException, IOException{
16 /*
17 * 1. 創建圖片緩沖區
18 * 2. 設置其寬高
19 * 3. 得到這個圖片的繪制環境(得到畫筆)
20 * 4. 保存起來
21 */
22 BufferedImage bi = new BufferedImage(85, 35, BufferedImage.TYPE_INT_RGB);
23 Graphics2D g = (Graphics2D)bi.getGraphics(); // 得到繪制環境
24 g.setColor(Color.WHITE); // 把環境設置為白色
25 g.fillRect(0, 0, 70, 35); // 填充矩形!填充矩形,從0,0點開始,寬70,高35,即整個圖片,即為圖片設置背景色
26 g.setColor(Color.RED); // 把環境設置為紅色
27 g.drawString("Hello", 2,35-2); // 向圖片上寫入字符串,其中2,2表示x,y軸的坐標
28
29 }
30 public void fun2() throws FileNotFoundException, IOException{
31 VerifyCode vc = new VerifyCode(); // 創建VerifyCode類的對象
32 BufferedImage bi = vc.getImage(); // 調用getImge()方法獲得一個BufferedImage對象
33 VerifyCode.output(bi, new FileOutputStream("WebRoot/img/yzm.jpg")); // 調用靜態方法output()方法將圖片保存在文件輸出流中
34 System.out.println(vc.getText()); // 在控制台上打印驗證碼的文本值
35 }
36 }