HTTP接受文件的java实现

 1 package TOOLS;

 2 

 3 import java.io.BufferedOutputStream;

 4 import java.io.File;

 5 import java.io.FileOutputStream;

 6 import java.io.IOException;

 7 import java.io.InputStream;

 8 import java.io.OutputStream;

 9 import java.util.HashMap;

10 import java.util.Map;

11 

12 import javax.servlet.http.HttpServletRequest;

13 import javax.servlet.http.HttpServletResponse;

14 import org.apache.commons.fileupload.FileItemIterator;

15 import org.apache.commons.fileupload.FileItemStream;

16 import org.apache.commons.fileupload.FileUploadException;

17 import org.apache.commons.fileupload.servlet.ServletFileUpload;

18 import org.apache.commons.fileupload.util.Streams;

19 

20 public  class HTTPPostAcceptPhoto {

21     

22     Map<String,String> result = new HashMap<String,String>();

23     

24     public Map<String,String> analyze(HttpServletRequest request,

25             HttpServletResponse response,String imageurl) {

26         if (ServletFileUpload.isMultipartContent(request)) {// 判断是否含有文件

27             insertPIC(request,imageurl);

28         } else {

29             txthandle(request, response);

30         }

31         return result;

32     }

33     //写出图片

34     private void insertPIC(HttpServletRequest request,String url) {

35 

36         ServletFileUpload upload = new ServletFileUpload();

37         FileItemIterator iter;

38         try {

39             iter = upload.getItemIterator(request);

40             while (iter.hasNext()) {

41                 FileItemStream item = iter.next();

42                 String name = item.getFieldName();// filename

43                 InputStream stream = item.openStream();

44                 System.out.println("文本" + item.isFormField());

45                 if (item.isFormField()) {// 如果是文本

46                     txt(result,name, Streams.asString(stream,"utf-8"));

47                 } else {

48                     String dir = request.getSession().getServletContext()

49                             .getRealPath(url);

50                     OutputStream fileos = null;

51                     byte[] buff = new byte[1];

52                     File image =new File(dir, item.getName());

53                     System.out.println(" item.getName():"+ item.getName());

54                     fileos = new BufferedOutputStream(new FileOutputStream(

55                             image));

56 

57                     while ((stream.read(buff)) != -1) {

58                         fileos.write(buff);

59                     }

60                     fileos.flush();

61                     fileos.close();

62                     result.put("imagename", item.getName());//返回图片名字

63                 }

64             }

65         } catch (FileUploadException e) {

66             // TODO Auto-generated catch block

67             System.out.println(e);

68         } catch (IOException e) {

69             // TODO Auto-generated catch block

70             System.out.println(e);

71         }

72     }

73     //有文本时的操作

74     private  void txt(Map<String,String> result,String name, String asString){

75         result.put(name, asString);

76     }

77     //纯文本操作

78     public  void txthandle(HttpServletRequest request,

79             HttpServletResponse response){

80         result = request.getParameterMap();

81     }

82     

83 }