我用POST方式从android发送参数和文件到ASP.NET做的服务器。代码如下: '====Page_Load 的代码,我用数据库做标记,发现只能执行到102这里就停止了 Call_Insert.Insert_Logs(lx, "__101__") Dim oFile As HttpPostedFile = Request.Files("file1") Call_Insert.Insert_Logs(lx, "__102__") Dim fs As Stream = oFile.InputStream Call_Insert.Insert_Logs(lx, "__103__") Dim by As Byte() = New Byte(oFile.InputStream.Length - 1) {}
Call_Insert.Insert_Logs(lx, "__104__")
'分块读取
Dim folderPath As String = Server.MapPath("~/UploadImages/")
Call_Insert.Insert_Logs(lx, "__105__")
Dim filePath As String = folderPath + oFile.FileName
Call_Insert.Insert_Logs(lx, "__106__")
If Not Directory.Exists(folderPath) Then
Call_Insert.Insert_Logs(lx, "__107__")
Directory.CreateDirectory(folderPath)
End If
Call_Insert.Insert_Logs(lx, "__108__")
Dim fStream As New FileStream(filePath, FileMode.Create)
Call_Insert.Insert_Logs(lx, "__109__")
Dim osize As Integer = fs.Read(by, 0, by.Length)
Call_Insert.Insert_Logs(lx, "__110__")
While osize > 0
If osize > 0 Then
fStream.Write(by, 0, osize)
End If
osize = fs.Read(by, 0, by.Length)
End While
fStream.Close()安卓的发送代码:
//POST
String File_name ="JN_PIC_"+ formatter.format(curDate) + ".jpg";
String actionUrl = "http://192.168.1.108:8012/get/get_msg.aspx";
Map<String, String> params = new HashMap<String, String>();
params.put("lx", "5");
params.put("send_txt", (fileLen/1024)+"KB ("+DC_INF+")");
params.put("send_txt2", DC_path);
//DC_path是图片文件的路径,确定无误
params.put("send_file_name", File_name);Map<String, File> files = new HashMap<String, File>();
files.put("file1", new File(DC_path));try {
Show_Toast(PostFile.post(actionUrl, params, files));
}catch(Exception e){Show_Toast("失败");}
fis.close();
Show_Toast("完成");
public static String post(String actionUrl, Map<String, String> params, Map<String, File> files) throws IOException { String BOUNDARY = java.util.UUID.randomUUID().toString();
String PREFIX = "--" , LINEND = "\r\n";
String MULTIPART_FROM_DATA = "multipart/form-data";
String CHARSET = "UTF-8";
URL uri = new URL(actionUrl);
HttpURLConnection conn = (HttpURLConnection) uri.openConnection();
conn.setReadTimeout(5 * 1000); // 缓存的最长时间
conn.setDoInput(true);// 允许输入
conn.setDoOutput(true);// 允许输出
conn.setUseCaches(false); // 不允许使用缓存
conn.setRequestMethod("POST");
conn.setRequestProperty("connection", "keep-alive");
conn.setRequestProperty("Charsert", "UTF-8");
conn.setRequestProperty("Content-Type", MULTIPART_FROM_DATA + ";boundary=" + BOUNDARY); // 首先组拼文本类型的参数
StringBuilder sb = new StringBuilder();
for (Map.Entry<String, String> entry : params.entrySet()) {
sb.append(PREFIX);
sb.append(BOUNDARY);
sb.append(LINEND);
sb.append("Content-Disposition: form-data; name=\"" + entry.getKey() + "\"" + LINEND);
sb.append("Content-Type: text/plain; charset=" + CHARSET+LINEND);
sb.append("Content-Transfer-Encoding: 8bit" + LINEND);
sb.append(LINEND);
sb.append(entry.getValue());
sb.append(LINEND);
} DataOutputStream outStream = new DataOutputStream(conn.getOutputStream());
outStream.write(sb.toString().getBytes());
// 发送文件数据
if(files!=null)
for (Map.Entry<String, File> file: files.entrySet()) {
StringBuilder sb1 = new StringBuilder();
sb1.append(PREFIX);
sb1.append(BOUNDARY);
sb1.append(LINEND);
sb1.append("Content-Disposition: form-data; name=\"file\"; filename=\""+file.getKey()+"\""+LINEND);
sb1.append("Content-Type: application/octet-stream; charset="+CHARSET+LINEND);
sb1.append(LINEND);
outStream.write(sb1.toString().getBytes()); InputStream is = new FileInputStream(file.getValue());
byte[] buffer = new byte[1024000];
int len = 0;
while ((len = is.read(buffer)) != -1) {
outStream.write(buffer, 0, len);
} is.close();
outStream.write(LINEND.getBytes());
} //请求结束标志
byte[] end_data = (PREFIX + BOUNDARY + PREFIX + LINEND).getBytes();
outStream.write(end_data);
outStream.flush();
// 得到响应码
int res = conn.getResponseCode();
if (res == 200) {
InputStream in = conn.getInputStream();
int ch;
StringBuilder sb2 = new StringBuilder();
while ((ch = in.read()) != -1) {
sb2.append((char) ch);
}
}
outStream.close();
conn.disconnect();
return "ok";
} 字符串参数全部能收到。
Call_Insert.Insert_Logs(lx, "__104__")
'分块读取
Dim folderPath As String = Server.MapPath("~/UploadImages/")
Call_Insert.Insert_Logs(lx, "__105__")
Dim filePath As String = folderPath + oFile.FileName
Call_Insert.Insert_Logs(lx, "__106__")
If Not Directory.Exists(folderPath) Then
Call_Insert.Insert_Logs(lx, "__107__")
Directory.CreateDirectory(folderPath)
End If
Call_Insert.Insert_Logs(lx, "__108__")
Dim fStream As New FileStream(filePath, FileMode.Create)
Call_Insert.Insert_Logs(lx, "__109__")
Dim osize As Integer = fs.Read(by, 0, by.Length)
Call_Insert.Insert_Logs(lx, "__110__")
While osize > 0
If osize > 0 Then
fStream.Write(by, 0, osize)
End If
osize = fs.Read(by, 0, by.Length)
End While
fStream.Close()安卓的发送代码:
//POST
String File_name ="JN_PIC_"+ formatter.format(curDate) + ".jpg";
String actionUrl = "http://192.168.1.108:8012/get/get_msg.aspx";
Map<String, String> params = new HashMap<String, String>();
params.put("lx", "5");
params.put("send_txt", (fileLen/1024)+"KB ("+DC_INF+")");
params.put("send_txt2", DC_path);
//DC_path是图片文件的路径,确定无误
params.put("send_file_name", File_name);Map<String, File> files = new HashMap<String, File>();
files.put("file1", new File(DC_path));try {
Show_Toast(PostFile.post(actionUrl, params, files));
}catch(Exception e){Show_Toast("失败");}
fis.close();
Show_Toast("完成");
public static String post(String actionUrl, Map<String, String> params, Map<String, File> files) throws IOException { String BOUNDARY = java.util.UUID.randomUUID().toString();
String PREFIX = "--" , LINEND = "\r\n";
String MULTIPART_FROM_DATA = "multipart/form-data";
String CHARSET = "UTF-8";
URL uri = new URL(actionUrl);
HttpURLConnection conn = (HttpURLConnection) uri.openConnection();
conn.setReadTimeout(5 * 1000); // 缓存的最长时间
conn.setDoInput(true);// 允许输入
conn.setDoOutput(true);// 允许输出
conn.setUseCaches(false); // 不允许使用缓存
conn.setRequestMethod("POST");
conn.setRequestProperty("connection", "keep-alive");
conn.setRequestProperty("Charsert", "UTF-8");
conn.setRequestProperty("Content-Type", MULTIPART_FROM_DATA + ";boundary=" + BOUNDARY); // 首先组拼文本类型的参数
StringBuilder sb = new StringBuilder();
for (Map.Entry<String, String> entry : params.entrySet()) {
sb.append(PREFIX);
sb.append(BOUNDARY);
sb.append(LINEND);
sb.append("Content-Disposition: form-data; name=\"" + entry.getKey() + "\"" + LINEND);
sb.append("Content-Type: text/plain; charset=" + CHARSET+LINEND);
sb.append("Content-Transfer-Encoding: 8bit" + LINEND);
sb.append(LINEND);
sb.append(entry.getValue());
sb.append(LINEND);
} DataOutputStream outStream = new DataOutputStream(conn.getOutputStream());
outStream.write(sb.toString().getBytes());
// 发送文件数据
if(files!=null)
for (Map.Entry<String, File> file: files.entrySet()) {
StringBuilder sb1 = new StringBuilder();
sb1.append(PREFIX);
sb1.append(BOUNDARY);
sb1.append(LINEND);
sb1.append("Content-Disposition: form-data; name=\"file\"; filename=\""+file.getKey()+"\""+LINEND);
sb1.append("Content-Type: application/octet-stream; charset="+CHARSET+LINEND);
sb1.append(LINEND);
outStream.write(sb1.toString().getBytes()); InputStream is = new FileInputStream(file.getValue());
byte[] buffer = new byte[1024000];
int len = 0;
while ((len = is.read(buffer)) != -1) {
outStream.write(buffer, 0, len);
} is.close();
outStream.write(LINEND.getBytes());
} //请求结束标志
byte[] end_data = (PREFIX + BOUNDARY + PREFIX + LINEND).getBytes();
outStream.write(end_data);
outStream.flush();
// 得到响应码
int res = conn.getResponseCode();
if (res == 200) {
InputStream in = conn.getInputStream();
int ch;
StringBuilder sb2 = new StringBuilder();
while ((ch = in.read()) != -1) {
sb2.append((char) ch);
}
}
outStream.close();
conn.disconnect();
return "ok";
} 字符串参数全部能收到。
<input type="file" name="File1" >
还是直接空白页即可?