java验证码.doc

生成图形验证码的ActionJava代码 1. packagecom.wjt276.co.web.actions; 2. 3. importjava.io.ByteArrayInputStream; 4. importjava.io.ByteArrayOutputStream; 5. importjava.io.IOException; 6. 7. importcom.wjt276.co.managers.ValidateImageManager; 8. 9. 10. SuppressWarnings(serial) 11. publicclassValidateImgActionextendsBaseAction 12. 13. /* 14. *用于保存已经生成的图形验证码输入流对象，以便在前台显示图形 15. */16. privateByteArrayInputStreaminputStream; 17. 18. /* 19. *图形验证码创建接口 20. */21. privateValidateImageManagervalidateImageManager; 22. 23. /* 24. *图形验证码图形的宽度 25. */26. privateintwidth; 27. /* 28. *图形验证码图形的高度 29. */30. privateintheight; 31. /* 32. *图形验证码图形上字体大小 33. */34. privateintfontSize; 35. /* 36. *生成验证码的位数 37. */38. privateintcodeLength; 39. 40. /* 41. *图形验证码的图形类型 42. */43. privateStringcontentType; 44. 45. 46. 47. publicStringexecute()throwsException 48. /保存已经生成好的验证码 49. Key.validateCode=createInputStream(ValidateImageManager.Disturb_Type_Complex); 50. returnSUCCESS; 51. 52. 53. /* 54. *在Action层创建图形验证码，并将创建好的图形字节流保存到inputStream对象中，并返回验证码 55. *paramdisturbType绘制干扰线的类型； 56. *0：不绘制干扰线； 57. *1：绘制单一色调的干扰线; 58. *2：绘制复杂的干扰线 59. *return返回已经生成好的验证码字符 60. *throwsIOException 61. */62. protectedStringcreateInputStream(intdisturbType)throwsIOException 63. ByteArrayOutputStreambos=newByteArrayOutputStream(); 64. StringvalidateCode=null; 65. validateCode=validateImageManager.createValidateCode(disturbType, 66. this.getFontSize(), 67. bos, 68. this.getWidth(), 69. this.getHeight(), 70. getText(System.validateCode,ValidateImageManager.Default_ValidateCode), 71. this.getCodeLength(); 72. inputStream=newByteArrayInputStream(bos.toByteArray(); 73. bos.close(); 74. returnvalidateCode; 75. 76. 77. 78. /-以下为getXXX/setXXX方法- 79. 80. 81. 82. publicByteArrayInputStreamgetInputStream() 83. returninputStream; 84. 85. 86. publicvoidsetInputStream(ByteArrayInputStreaminputStream) 87. this.inputStream=inputStream; 88. 89. 90. publicValidateImageManagergetValidateImageManager() 91. returnvalidateImageManager; 92. 93. 94. publicvoidsetValidateImageManager(ValidateImageManagervalidateImageManager) 95. this.validateImageManager=validateImageManager; 96. 97. 98. publicStringgetContentType() 99. if(null=this.contentType|.equals(this.contentType.trim() 100. returnKey.DEFAULT_VALIDATEIMG_CONTENT_TYPE; 101. 102. returncontentType; 103. 104. 105. publicvoidsetContentType(StringcontentType) 106. this.contentType=contentType; 107. 108. 109. publicintgetWidth() 110. if(this.widthKey.DEFAULT_VALIDATEIMG_WIDTH) 111. returnKey.DEFAULT_VALIDATEIMG_WIDTH; 112. 113. returnwidth; 114. 115. 116. publicvoidsetWidth(intwidth) 117. this.width=width; 118. 119. 120. publicintgetHeight() 121. if(this.heightKey.DEFAULT_VALIDATEIMG_HEIGHT) 122. returnKey.DEFAULT_VALIDATEIMG_HEIGHT; 123. 124. returnheight; 125. 126. 127. publicvoidsetHeight(intheight) 128. this.height=height; 129. 130. 131. publicintgetFontSize() 132. if(this.fontSizeKey.DEFAULT_VALIDATEIMG_FONT_SIZE) 133. returnKey.DEFAULT_VALIDATEIMG_FONT_SIZE; 134. 135. returnfontSize; 136. 137. 138. publicvoidsetFontSize(intfontSize) 139. this.fontSize=fontSize; 140. 141. 142. publicintgetCodeLength() 143. if(this.codeLengthKey.DEFAULT_VALIDATEIMG_CODE_LENGTH) 144. returnKey.DEFAULT_VALIDATEIMG_CODE_LENGTH; 145. 146. returncodeLength; 147. 148. 149. publicvoidsetCodeLength(intcodeLength) 150. this.codeLength=codeLength; 151. 152. 153. package com.wjt276.co.web.actions;import java.io.ByteArrayInputStream;import java.io.ByteArrayOutputStream;import java.io.IOException;import com.wjt276.co.managers.ValidateImageManager;SuppressWarnings(serial)public class ValidateImgAction extends BaseAction /* * 用于保存已经生成的图形验证码输入流对象，以便在前台显示图形 */private ByteArrayInputStream inputStream;/* * 图形验证码创建接口 */private ValidateImageManager validateImageManager;/* * 图形验证码图形的宽度 */private int width;/* * 图形验证码图形的高度 */private int height;/* * 图形验证码图形上字体大小 */private int fontSize;/* * 生成验证码的位数 */private int codeLength;/* * 图形验证码的图形类型 */private String contentType;public String execute() throws Exception/保存已经生成好的验证码Key.validateCode = createInputStream(ValidateImageManager.Disturb_Type_Complex);return SUCCESS;/* * 在Action层创建图形验证码，并将创建好的图形字节流保存到inputStream对象中，并返回验证码 * param disturbType 绘制干扰线的类型； * 0：不绘制干扰线； * 1：绘制单一色调的干扰线; * 2：绘制复杂的干扰线 * return 返回已经生成好的验证码字符 * throws IOException */protected String createInputStream(int disturbType) throws IOException ByteArrayOutputStream bos = new ByteArrayOutputStream();String validateCode = null;validateCode = validateImageManager.createValidateCode(disturbType,this.getFontSize(), bos, this.getWidth(), this.getHeight(), getText(System.validateCode,ValidateImageManager.Default_ValidateCode), this.getCodeLength();inputStream = new ByteArrayInputStream(bos.toByteArray();bos.close();return validateCode;/-以下为getXXX/setXXX方法-public ByteArrayInputStream getInputStream() return inputStream;public void setInputStream(ByteArrayInputStream inputStream) this.inputStream = inputStream;public ValidateImageManager getValidateImageManager() return validateImageManager;public void setValidateImageManager(ValidateImageManager validateImageManager) this.validateImageManager = validateImageManager;public String getContentType() if(null = this.contentType | .equals(this.contentType.trim()return Key.DEFAULT_VALIDATEIMG_CONTENT_TYPE;return contentType;public void setContentType(String contentType) this.contentType = contentType;public int getWidth() if(this.width Key.DEFAULT_VALIDATEIMG_WIDTH)return Key.DEFAULT_VALIDATEIMG_WIDTH;return width;public void setWidth(int width) this.width = width;public int getHeight() if(this.height Key.DEFAULT_VALIDATEIMG_HEIGHT)return Key.DEFAULT_VALIDATEIMG_HEIGHT;return height;public void setHeight(int height) this.height = height;public int getFontSize() if(this.fontSize Key.DEFAULT_VALIDATEIMG_FONT_SIZE)return Key.DEFAULT_VALIDATEIMG_FONT_SIZE;return fontSize;public void setFontSize(int fontSize) this.fontSize = fontSize;public int getCodeLength() if(this.codeLength Key.DEFAULT_VALIDATEIMG_CODE_LENGTH)return Key.DEFAULT_VALIDATEIMG_CODE_LENGTH;return codeLength;public void setCodeLength(int codeLength) this.codeLength = codeLength;二、生成图形验证码的接口ValidateImageManagerJava代码 1. packagecom.wjt276.co.managers; 2. 3. importjava.io.ByteArrayOutputStream; 4. 5. publicinterfaceValidateImageManager 6. /* 7. *默认验证字符串 8. */9. publicstaticfinalStringDefault_ValidateCode=ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789; 10. 11. /* 12. *默认绘制干扰线的类型（不绘制干扰线） 13. */14. publicstaticfinalintDisturb_Type_Default=0; 15. 16. /* 17. *绘制单一色调的干扰线 18. */19. publicstaticfinalintDisturb_Type_Simple=1; 20. 21. /* 22. *绘制复杂的干扰线 23. */24. publicstaticfinalintDisturb_Type_Complex=2; 25. 26. /* 27. *生成验证图片并返回验证码 28. * 29. *paramdisturbType绘制干扰线的类型； 30. *0：不绘制干扰线； 31. *1：绘制单一色调的干扰线; 32. *2：绘制复杂的干扰线 33. *paramfontSize图形上验证码字体的大小 34. *parambos字节流，用于返回生成的图形验证码字节流，并显示于前台 35. *paramwidth图形的宽度 36. *paramheight图形的高度 37. *paramvalidateCode默认的验证码编码 38. *paramcodeLength验证码字符长度 39. *return返回生成好的验证码字符 40. */41. publicabstractStringcreateValidateCode(intdisturbType,intfontSize, 42. ByteArrayOutputStreambos,intwidth,intheight, 43. StringvalidateCode,intcodeLength); 44. package com.wjt276.co.managers;import java.io.ByteArrayOutputStream;public interface ValidateImageManager /* * 默认验证字符串 */public static final String Default_ValidateCode = ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789;/* * 默认绘制干扰线的类型（不绘制干扰线） */public static final int Disturb_Type_Default = 0;/* * 绘制单一色调的干扰线 */public static final int Disturb_Type_Simple = 1;/* * 绘制复杂的干扰线 */public static final int Disturb_Type_Complex = 2;/* * 生成验证图片并返回验证码 * * param disturbType 绘制干扰线的类型； * 0：不绘制干扰线； * 1：绘制单一色调的干扰线; * 2：绘制复杂的干扰线 * param fontSize 图形上验证码字体的大小 * param bos 字节流，用于返回生成的图形验证码字节流，并显示于前台 * param width 图形的宽度 * param height 图形的高度 * param validateCode 默认的验证码编码 * param codeLength 验证码字符长度 * return 返回生成好的验证码字符 */public abstract String createValidateCode(int disturbType, int fontSize,ByteArrayOutputStream bos, int width, int height,String validateCode, int codeLength);一、生成图形验证码的实现ValidateImageManagerImplJava代码 1. packagecom.wjt276.co.managers.impl; 2. 3. importjava.awt.Color; 4. importjava.awt.Font; 5. importjava.awt.Graphics; 6. importjava.awt.image.BufferedImage; 7. importjava.io.ByteArrayOutputStream; 8. importjava.io.IOException; 9. importjava.util.Random; 10. 11. importjavax.imageio.ImageIO; 12. importjavax.imageio.stream.ImageOutputStream; 13. 14. importcom.wjt276.co.managers.ValidateImageManager; 15. 16. publicclassValidateImageManagerImplextendsAbstractManagerimplements17. ValidateImageManager 18. 19. /* 20. *生成验证图片并返回验证码 21. * 22. *paramdisturbType绘制干扰线的类型； 23. *0：不绘制干扰线；1：绘制单一色调的干扰线;2：绘制复杂的干扰线 24. *paramfontSize图形上验证码字体的大小 25. *parambos字节流，用于返回生成的图形验证码字节流，并显示于前台 26. *paramwidth图形的宽度 27. *paramheight图形的高度 28. *paramvalidateCode默认的验证码编码 29. *paramcodeLength验证码字符长度 30. *return返回生成好的验证码字符 31. */32. publicStringcreateValidateCode(intdisturbType, 33. intfontSize, 34. ByteArrayOutputStreambos, 35. intwidth, 36. intheight, 37. StringvalidateCode, 38. intcodeLength) 39. BufferedImagebImg=newBufferedImage(width,height,BufferedImage.TYPE_INT_RGB); 40. Graphicsg=bImg.getGraphics(); 41. Randomrandom=newRandom(); 42. 43. if(null=validateCode|validateCode.isEmpty() 44. validateCode=Default_ValidateCode; 45. 46. if(fontSize=height) 47. fontSize=height-1; 48. 49. 50. drawOutline(g,width,height); 51. switch(disturbType) 52. caseDisturb_Type_Simple: 53. drawSimpleDisturb(g,random,width,height); 54. break; 55. caseDisturb_Type_Complex: 56. drawDisturb(g,random,width,height); 57. break; 58. default: 59. break; 60. 61. 62. Stringcode=drawCode(g,random,validateCode,codeLength,width, 63. height,fontSize); 64. g.dispose(); 65. try 66. ImageOutputStreamimOut=ImageIO.createImageOutputStream(bos); 67. ImageIO.write(bImg,JPEG,imOut); 68. imOut.close(); 69. catch(IOExceptione) 70. e.printStackTrace(); 71. 72. returncode; 73. 74. 75. /* 76. *绘制边框 77. * 78. *paramg 79. *paramwidth 80. *paramheight 81. */82. privatestaticvoiddrawOutline(Graphicsg,intwidth,intheight) 83. g.setColor(Color.white); 84. g.fillRect(0,0,width,height); 85. g.setColor(Color.BLACK); 86. g.drawRect(0,0,width-1,height-1); 87. 88. 89. /* 90. *绘制比较复杂的干扰线 91. * 92. *paramg 93. *paramrandom 94. *paramwidth 95. *paramheight 96. */97. privatestaticvoiddrawDisturb(Graphicsg,Randomrandom,intwidth, 98. intheight) 99. intx,y,x1,y1; 100. for(inti=0;iwidth;i+) 101. x=random.nextInt(width); 102. y=random.nextInt(height); 103. x1=random.nextInt(12); 104. y1=random.nextInt(12); 105. g.setColor(getRandomColor(random,120,255); 106. g.drawLine(x,y,x+x1,y+y1); 107. g.fillArc(x,y,x1,y1,random.nextInt(360),random.nextInt(360); 108. 109. 110. 111. /* 112. *绘制简单的干扰线 113. * 114. *paramg 115. *paramrandom 116. *paramwidth 117. *paramheight 118. */119. privatestaticvoiddrawSimpleDisturb(Graphicsg,Randomrandom,intwidth, 120. intheight) 121. g.setColor(getRandomColor(random,160,200); 122. for(inti=0;i255?255:Math.abs(pMax); 141. pMin=(Math