http请求(二) 文件上传工具

 1 public class FormFile {
 2     // 上传文件的数据
 3     private byte[] data;
 4 
 5     private InputStream inStream;
 6 
 7     // 文件名称
 8     private String filename;
 9     // 表单名称
10     private String formname;
11     // 内容类型
12     private String contentType = "application/octet-stream";
13 
14     public FormFile(String filename, byte[] data, String formname,
15             String contentType) {
16         this.data = data;
17         this.filename = filename;
18         this.formname = formname;
19         if (contentType != null) {
20             this.contentType = contentType;
21         }
22     }
23 
24     public FormFile(String filename, InputStream inStream, String formname,
25             String contentType) {
26         this.filename = filename;
27         this.formname = formname;
28         this.inStream = inStream;
29         if (contentType != null) {
30             this.contentType = contentType;
31         }
32     }
33 
34     public byte[] getData() {
35         return data;
36     }
37 
38     public void setData(byte[] data) {
39         this.data = data;
40     }
41 
42     public InputStream getInStream() {
43         return inStream;
44     }
45 
46     public void setInStream(InputStream inStream) {
47         this.inStream = inStream;
48     }
49 
50     public String getFilename() {
51         return filename;
52     }
53 
54     public void setFilename(String filename) {
55         this.filename = filename;
56     }
57 
58     public String getFormname() {
59         return formname;
60     }
61 
62     public void setFormname(String formname) {
63         this.formname = formname;
64     }
65 
66     public String getContentType() {
67         return contentType;
68     }
69 
70     public void setContentType(String contentType) {
71         this.contentType = contentType;
72     }
73 }
74 代码  1 public class HttpUploadRequester {
  2     /**
  3      * 直接通过HTTP协议提交数据到服务器,实现如下面表单提交功能: <FORM METHOD=POST
  4      * ACTION="http://192.168.0.200:8080/ssi/fileload/test.do"
  5      * enctype="multipart/form-data"> <INPUT TYPE="text" NAME="name"> <INPUT
  6      * TYPE="text" NAME="id"> <input type="file" name="imagefile"/> <input
  7      * type="file" name="zip"/> </FORM>
  8      * 
  9      * @param actionUrl
 10      *            上传路径(注：避免使用localhost或127.0.0.1这样的路径测试，因为它会指向手机模拟器，
 11      *            你可以使用http://192.168.1.10:8080这样的路径测试)
 12      * @param params
 13      *            请求参数 key为参数名,value为参数值
 14      * @param file
 15      *            上传文件
 16      */
 17     // http协议中分割符，随便定义
 18     private static final String HTTP_BOUNDARY = "---------9dx5a2d578c2";
 19     private static final String MULTIPART_FORM_DATA = "multipart/form-data";
 20     private static final String LINE_ENTER = "\r\n"; // 换行 回车
 21     private static final int RESPONSE_OK = 200;
 22 
 23     public static String post(String urlPath, Map<String, String> params,
 24             FormFile[] formFiles) {
 25         try {
 26             URL url = new URL(urlPath);
 27             HttpURLConnection conn = (HttpURLConnection) url.openConnection();
 28             conn.setRequestMethod("POST");
 29             conn.setReadTimeout(5 * 1000);
 30             conn.setDoOutput(true); // 发送POST请求， 必须设置允许输出
 31             conn.setUseCaches(false);
 32             conn.setRequestProperty("Connection", "Keep-Alive"); // 维持长链接
 33             conn.setRequestProperty("Charset", "UTF-8");
 34             conn.setRequestProperty("Content-Type", MULTIPART_FORM_DATA
 35                     + "; boundary=" + HTTP_BOUNDARY);
 36 
 37             StringBuilder formItemData = new StringBuilder();
 38             // 构建 表单字段内容
 39             for (Map.Entry<String, String> entry : params.entrySet()) {
 40                 formItemData.append("--");
 41                 formItemData.append(HTTP_BOUNDARY);
 42                 formItemData.append(LINE_ENTER);
 43                 formItemData.append("Content-Disposition: form-data; name=\""
 44                         + entry.getKey() + "\"\r\n\r\n");
 45                 formItemData.append(entry.getValue());
 46                 formItemData.append(LINE_ENTER);
 47             }
 48             DataOutputStream outStream = new DataOutputStream(
 49                     conn.getOutputStream());
 50             // 发送表单字段内容到服务器
 51             outStream.write(formItemData.toString().getBytes());
 52 
 53             // 发送上传文件数据
 54             for (FormFile fileData : formFiles) {
 55                 StringBuilder fileSplit = new StringBuilder();
 56                 fileSplit.append("--");
 57                 fileSplit.append(HTTP_BOUNDARY);
 58                 fileSplit.append(LINE_ENTER);
 59                 fileSplit.append("Content-Disposition: form-data;name=\""
 60                         + fileData.getFormname() + "\";filename=\""
 61                         + fileData.getFilename() + "\"\r\n");
 62                 fileSplit.append("Content-Type:" + fileData.getContentType()
 63                         + LINE_ENTER + LINE_ENTER);
 64                 outStream.write(fileSplit.toString().getBytes());
 65 
 66                 if (fileData.getInStream() != null) {
 67                     byte[] buffer = new byte[1024];
 68                     int length = 0;
 69                     while ((length = fileData.getInStream().read()) != -1) {
 70                         outStream.write(buffer, 0, length);
 71                     }
 72                     fileData.getInStream().close();
 73                 } else {
 74                     outStream.write(fileData.getData(), 0,
 75                             fileData.getData().length);
 76                 }
 77                 outStream.write(LINE_ENTER.getBytes());
 78             }
 79             // 数据结束标志
 80             byte[] endData = ("--" + HTTP_BOUNDARY + "--" + LINE_ENTER)
 81                     .getBytes();
 82             outStream.write(endData);
 83             outStream.flush();
 84             outStream.close();
 85             int responseCode = conn.getResponseCode();
 86             if (responseCode != RESPONSE_OK) {
 87                 throw new RuntimeException("请求url失败");
 88             }
 89             InputStream is = conn.getInputStream();
 90             int ch;
 91             StringBuilder b = new StringBuilder();
 92             while ((ch = is.read()) != -1) {
 93                 b.append((char) ch);
 94             }
 95             Log.i("HttpPost", b.toString());
 96             conn.disconnect();
 97             return b.toString();
 98         } catch (Exception e) {
 99             throw new RuntimeException();
100         }
101     }
102 
103     // 上传单个文件
104     public static String post(String urlPath, Map<String, String> params,
105             FormFile formFiles) {
106         return post(urlPath, params, new FormFile[] { formFiles });
107     }
108 }
109 代码 1   // 以表单方式发送请求
 2 
 3          public static void sendDataToServerByForm() throws Exception {
 4 
 5                    Map<String, String> params = new HashMap<String, String>();
 6 
 7                    params.put("method", "sendDataByForm");
 8 
 9                    params.put("strData", "字符串数据");
10 
11                    // 获取SDCard中的good.jpg
12 
13                    File file = new File(Environment.getExternalStorageDirectory(),
14 
15                                      "app_Goog_Android_w.png");
16 
17                    FormFile fileData = new FormFile("app_Goog_Android_w.png", new FileInputStream(file),
18 
19                                      "fileData", "application/octet-stream");
20 
21                    HttpUploadRequester.post(
22 
23                                      "http://192.168.0.2:8080/AndroidWebServer/server.do", params,
24 
25                                      fileData);
26 
27          }