public class HttpAssist {緩存
private static final String TAG = "uploadFile";
private static final int TIME_OUT = 10 * 10000000; // 超時時間
private static final String CHARSET = "utf-8"; // 設置編碼
public static final String SUCCESS = "1";
public static final String FAILURE = "0";
//上傳文件
public static String uploadFile(File file) {
String BOUNDARY = UUID.randomUUID().toString(); // 邊界標識 隨機生成
String PREFIX = "--", LINE_END = "\r\n";
String CONTENT_TYPE = "multipart/form-data"; // 內容類型
//請求URL
String RequestURL = "http://192.168.0.100:7080/YkyPhoneService/Uploadfile1";
//String RequestURL = "http://www.hong3.com/Fortest/getfiles";
try {
URL url = new URL(RequestURL);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setReadTimeout(TIME_OUT);
conn.setConnectTimeout(TIME_OUT);
conn.setDoInput(true); // 容許輸入流
conn.setDoOutput(true); // 容許輸出流
// Post 請求不能使用緩存
conn.setUseCaches(false); // 不容許使用緩存
conn.setRequestMethod("POST"); // 請求方式
conn.setRequestProperty("Charset", CHARSET); // 設置編碼
conn.setRequestProperty("connection", "keep-alive");
conn.setRequestProperty("Content-Type", CONTENT_TYPE + ";boundary="
+ BOUNDARY);
if (file != null) {
/**
* 當文件不爲空,把文件包裝而且上傳
*/
OutputStream outputSteam = conn.getOutputStream();
DataOutputStream dos = new DataOutputStream(outputSteam);
StringBuffer sb = new StringBuffer();
sb.append(PREFIX);
sb.append(BOUNDARY);
sb.append(LINE_END);
/**
* 這裏重點注意: name裏面的值爲服務器端須要key 只有這個key 才能夠獲得對應的文件 ,也就是此處的uploadfile,
* filename是文件的名字,包含後綴名的 好比:abc.png
*/
sb.append("Content-Disposition: form-data; name=\"uploadedfile\"; filename=\""
+ file.getName() + "\"" + LINE_END);
sb.append("Content-Type: application/octet-stream; charset="
+ CHARSET + LINE_END);
sb.append(LINE_END);
dos.write(sb.toString().getBytes());
InputStream is = new FileInputStream(file);
byte[] bytes = new byte[1024];
int len = 0;
while ((len = is.read(bytes)) != -1) {
dos.write(bytes, 0, len);
}
is.close();
dos.write(LINE_END.getBytes());
byte[] end_data = (PREFIX + BOUNDARY + PREFIX + LINE_END)
.getBytes();
dos.write(end_data);
dos.flush();
/**
* 獲取響應碼 200=成功 當響應成功,獲取響應的流
*/
int res = conn.getResponseCode();
if (res == 200) {
return SUCCESS;
}
}
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return FAILURE;
}
/**
* 從服務器取圖片
* @param url
* @return
*/
public static Bitmap getHttpBitmap(String url) {
URL myFileUrl = null;
Bitmap bitmap = null;
try {
myFileUrl = new URL(url);
//myFileUrl = new URL(s);
} catch (MalformedURLException e) {
e.printStackTrace();
}
try {
HttpURLConnection conn = (HttpURLConnection) myFileUrl.openConnection();
conn.setConnectTimeout(0);
conn.setDoInput(true);
conn.setDoOutput(true);
conn.setUseCaches(false);
conn.connect();
System.setProperty("http.keepAlive", "false");
InputStream is = conn.getInputStream();
bitmap = BitmapFactory.decodeStream(is);
is.close();
return bitmap;
} catch (IOException e) {
e.printStackTrace();
return null;
}
}服務器
}app