生成一维码的方法（用这个的原因是因为它所用的依赖是可以在maven中央仓库能找到的，不用付费的）

1. import java.awt.image.BufferedImage;
2. import java.io.ByteArrayOutputStream;
3. import java.io.File;
4. import java.io.FileOutputStream;
5. import java.io.IOException;
6. 
   
7. import org.apache.avalon.framework.configuration.Configuration;
8. import org.apache.avalon.framework.configuration.DefaultConfiguration;
9. import org.apache.avalon.framework.logger.ConsoleLogger;
10. import org.apache.avalon.framework.logger.Logger;
11. import org.krysalis.barcode4j.BarcodeGenerator;
12. import org.krysalis.barcode4j.BarcodeUtil;
13. import org.krysalis.barcode4j.output.bitmap.BitmapCanvasProvider;
14. import org.krysalis.barcode4j.tools.MimeTypes;
15. 
    
16. public class Test1
17. {
18. private transient Logger log =new ConsoleLogger(ConsoleLogger.LEVEL_INFO);
19. 
    
20. public staticvoid main(String[] args)
21. {
22. Test1 t =new Test1();
23. t.getBarcode();
24. System.out.println("success");
25. }
26. 
    
27. protected void getBarcode()
28. {
29. String format = MimeTypes.MIME_JPEG;// MimeTypes.MIME_JPEG
30. 
    
31. String text = "ABCDE0123456789";
32. 
    
33. ByteArrayOutputStream bout = null;
34. try
35. {
36. BarcodeUtil util = BarcodeUtil.getInstance();
37. 
    
38. Configuration cfg = buildCfg();
39. BarcodeGenerator gen = util.createBarcodeGenerator(cfg);
40. 
    
41. bout = new ByteArrayOutputStream(4096);
42. 
    
43. int dpi = 300;// 分辨率
44. int orientation = 0;
45. 
    
46. BitmapCanvasProvider bitmap = new BitmapCanvasProvider(bout,
47. format, dpi, BufferedImage.TYPE_BYTE_BINARY, false,
48. orientation);
49. 
    
50. gen.generateBarcode(bitmap, text);
51. bitmap.finish();
52. 
    
53. File file = new File("c://"+text+".jpg");
54. FileOutputStream fos = new FileOutputStream(file);
55. fos.write(bout.toByteArray(), 0, bout.size());
56. 
    
57. // response.setContentType(format);
58. // response.setContentLength(bout.size());
59. // response.getOutputStream().write(bout.toByteArray());
60. // response.getOutputStream().write(bout.toByteArray());
61. // response.getOutputStream().flush();
62. 
    
63. }
64. catch (Exception e)
65. {
66. log.error("Error while generating barcode", e);
67. 
    
68. }
69. finally
70. {
71. if (bout != null)
72. {
73. try
74. {
75. bout.close();
76. }
77. catch (IOException e)
78. {
79. // TODO Auto-generated catch block
80. e.printStackTrace();
81. }
82. }
83. 
    
84. }
85. 
    
86. }
87. 
    
88. /**
89. * Build an Avalon Configuration object from the request.
90. *
91. * @return the newly built COnfiguration object
92. * @todo Change to bean API
93. */
94. protected Configuration buildCfg()
95. {
96. DefaultConfiguration cfg = new DefaultConfiguration("barcode");
97. // Get type
98. 
    
99. String type = "code128";
100. DefaultConfiguration child = new DefaultConfiguration(type);
101. cfg.addChild(child);
102. 
     
103. // DefaultConfiguration attr;
104. // // height
105. // String height = "100px";
106. // attr = new DefaultConfiguration("height");
107. // attr.setValue(height);
108. // child.addChild(attr);
109. //
110. // // width
111. // String moduleWidth = "300px";
112. // attr = new DefaultConfiguration("module-width");
113. // attr.setValue(moduleWidth);
114. // child.addChild(attr);
115. 
     
116. return cfg;
117. }
118. 
     
119. }