转自:http://blog.csdn.net/5iasp/article/details/8669644#comments
public static void main(String[] args) {
String filepath="d:\\test\\1.jpg";
String urlStr = "http://localhost:8080/minicms/picup.jsp";
Map<String, String> txtMap = new HashMap<String, String>();
txtMap.put("name", "testname");
Map<String, String> fMap = new HashMap<String, String>();
fMap.put("userfile", filepath);
String ret = formUpload(urlStr, txtMap, fMap);
System.out.println(ret);
}
public static String formUploadTest(String urlStr, Map<String, String> textMap,Map<String, String> fileMap) {
String res = null;
HttpURLConnection conn = null;
String BOUNDARY = "***********************"; //注:request头和上传文件内容的分隔符
try {
URL url = new URL(urlStr);
conn = (HttpURLConnection) url.openConnection();
conn.setConnectTimeout(5000);
conn.setReadTimeout(30000);
conn.setDoOutput(true);
conn.setDoInput(true);
conn.setUseCaches(false);
conn.setRequestMethod("POST");
conn.setRequestProperty("Connection", "Keep-Alive");
conn.setRequestProperty("User-Agent","Mozilla/5.0 (Windows; U; Windows NT 6.1; zh-CN; rv:1.9.2.6)");
conn.setRequestProperty("Content-Type","multipart/form-data; boundary=" + BOUNDARY);
OutputStream out = new DataOutputStream(conn.getOutputStream());
// 一、
if (textMap != null && textMap.size>0) {
StringBuffer strBuf = new StringBuffer();
Iterator iter = textMap.entrySet().iterator();
while (iter.hasNext()) {
Map.Entry entry = (Map.Entry) iter.next();
String inputName = (String) entry.getKey();
String inputValue = (String) entry.getValue();
if (inputValue == null) {
continue;
}
strBuf.append("\r\n").append("--").append(BOUNDARY).append("\r\n");
strBuf.append("Content-Disposition: form-data; name=\"" + inputName + "\"\r\n\r\n");
strBuf.append(inputValue);
}
out.write(strBuf.toString().getBytes());
}
// 图片
if (fileMap != null && textMap.size>0) {
Iterator iter = fileMap.entrySet().iterator();
while (iter.hasNext()) {
Map.Entry entry = (Map.Entry) iter.next();
String inputName = (String) entry.getKey();
String inputValue = (String) entry.getValue();
if (inputValue == null)
continue;
File file = new File(inputValue);
String filename = file.getName();
String contentType = new MimetypesFileTypeMap().getContentType(file);
if (filename!=null && filename.endsWith(".png"))
contentType = "image/png";
if (contentType == null || contentType.equals(""))
contentType = "application/octet-stream";
StringBuffer strBuf = new StringBuffer();
strBuf.append("\r\n").append("--").append(BOUNDARY).append( "\r\n");
strBuf.append("Content-Disposition: form-data; name=\""
+ inputName + "\"; filename=\"" + filename + "\"\r\n");
strBuf.append("Content-Type:" + contentType + "\r\n\r\n");
out.write(strBuf.toString().getBytes());
DataInputStream in = new DataInputStream(new FileInputStream(file));
int bytes = 0;
byte[] bufferOut = new byte[1024];
while ((bytes = in.read(bufferOut)) != -1)
out.write(bufferOut, 0, bytes);
in.close();
}
}
byte[] endData = ("\r\n--" + BOUNDARY + "--\r\n").getBytes();
out.write(endData);
out.flush();
out.close();
//测试是否上传成功
StringBuffer strBuf = new StringBuffer();
BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));
String line = null;
while ((line = reader.readLine()) != null)
strBuf.append(line).append("\n");
res = strBuf.toString();
reader.close();
reader = null;
} catch (Exception e) {
System.out.println("发送POST请求出错。" + urlStr);
e.printStackTrace();
} finally {
if (conn != null) {
conn.disconnect();
conn = null;
}
}
return res;
}
}