上传图片/文件到服务器

package yao.camera.util;

import java.io.ByteArrayOutputStream;

import java.io.DataOutputStream;

import java.io.File;

import java.io.FileInputStream;

import java.io.InputStream;

import java.net.HttpURLConnection;

import java.net.URL;

import android.graphics.Bitmap;

import android.text.TextUtils;

/**

* @author wuxifu 图片/文件的上传: Content-Type: multipart/form-data;

* boundary=---------------------------114556938680 Content-Length: 210

*

* -----------------------------114556938680 Content-Disposition:

* form-data; name="fileName"; filename="wuxifu.txt" Content-Type:

* text/plain

*

* hello how doyou do -----------------------------114556938680--

*

*

*/

public class UploadUtils {

public static final String IMAGE_TYPE_PNG = "PNG";

public static final String IMAGE_TYPE_JPG = "JPG";

public static final String end = "\r\n";

public static final String twoHyphens = "--";

public static final String boundary = "*****";

private String url;

private String fileNameKey;

/**

* @param url

* @param fileNameKey

* name="fileName"之fileName即为fileNameKey,这个取决于后台开发者的习惯)<form

* action="uploadFile.php" method="post"

* enctype="multipart/form-data"> <input type="file"

* name="fileName"> <input type="submit" value="上传文件"> </form>

*

*/

public UploadUtils(String url, String fileNameKey) {

super();

this.url = url;

this.fileNameKey = fileNameKey;

}

/**

* @param bitmap

* @param imageType PNG JPG

* @param mFileName hello.jpg hello.png 需要扩展名

* @param iUpload

*/

public synchronized void uploadBitmap(Bitmap bitmap, String imageType,String mFileName ,IUpload iUpload) {

try {

URL url2 = new URL(url);

HttpURLConnection con = (HttpURLConnection) url2.openConnection();

/* 允许Input、Output，不使用Cache */

con.setDoInput(true);

con.setDoOutput(true);

con.setUseCaches(false);

/* POST方法 */

con.setRequestMethod("POST");

/* setRequestProperty */

con.setRequestProperty("Connection", "Keep-Alive");

con.setRequestProperty("Charset", "UTF-8");

con.setRequestProperty("Content-Type",

"multipart/form-data;boundary=" + boundary);

DataOutputStream ds = new DataOutputStream(con.getOutputStream());

ds.writeBytes(twoHyphens + boundary + end);

ds.writeBytes("Content-Disposition: form-data; " + "name=\""

+ fileNameKey + "\";filename=\"" + mFileName + "\"");

ds.writeBytes(end);// 换行

// 图片类型的确定

if (!TextUtils.isEmpty(imageType)

&& imageType.equals(IMAGE_TYPE_PNG)) {

ds.writeBytes("Content-Type:image/png");

} else {

ds.writeBytes("Content-Type:image/jpeg");

}

ds.writeBytes(end + end);

ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();

// 压缩类型的确定

if (!TextUtils.isEmpty(imageType)

&& imageType.equals(IMAGE_TYPE_PNG)) {

bitmap.compress(Bitmap.CompressFormat.PNG, 100,

byteArrayOutputStream);

} else {

bitmap.compress(Bitmap.CompressFormat.JPEG, 100,

byteArrayOutputStream);

}

byte[] byteArray = byteArrayOutputStream.toByteArray();

ds.write(byteArray);

ds.writeBytes(end + end);

ds.writeBytes(twoHyphens + boundary + twoHyphens + end);

/* close streams */

byteArrayOutputStream.close();

ds.flush();

/* 获取提交数据后服务器返回的内容 */

InputStream is = con.getInputStream();

StringBuffer b = new StringBuffer();

int length = 0;

byte[] buffer = new byte[1024];

while ((length = is.read(buffer)) != -1) {

b.append(new String(buffer, 0, length));

}

/* success */

iUpload.uploadSuccess(b.toString());

/* close */

ds.close();

} catch (Exception e) {

iUpload.uploadFailed(e.toString());

}

}

/**

* @param file 上传文件

* @param iUpload

*/

public synchronized void uploadFile(File file, IUpload iUpload) {

try {

URL url2 = new URL(url);

HttpURLConnection con = (HttpURLConnection) url2.openConnection();

/* 允许Input、Output，不使用Cache */

con.setDoInput(true);

con.setDoOutput(true);

con.setUseCaches(false);

/* post方法*/

con.setRequestMethod("POST");

/* setRequestProperty */

con.setRequestProperty("Connection", "Keep-Alive");

con.setRequestProperty("Charset", "UTF-8");

con.setRequestProperty("Content-Type",

"multipart/form-data;boundary=" + boundary);

DataOutputStream ds = new DataOutputStream(con.getOutputStream());

ds.writeBytes(twoHyphens + boundary + end);

ds.writeBytes("Content-Disposition: form-data; " + "name=\""

+ fileNameKey + "\";filename=\"" + file.getName() + "\"");

ds.writeBytes(end+end);

FileInputStream fStream = new FileInputStream(file);

int bufferSize = 1024;

byte[] buffer = new byte[bufferSize];

int length = -1;

while ((length = fStream.read(buffer)) != -1) {

ds.write(buffer, 0, length);

ds.flush();

}

ds.writeBytes(end + end);

ds.writeBytes(twoHyphens + boundary + twoHyphens + end);

/* close streams */

fStream.close();

ds.flush();

/* 获取提交数据后服务器返回的内容*/

InputStream is = con.getInputStream();

StringBuffer b = new StringBuffer();

while ((length = is.read(buffer)) != -1) {

b.append(new String(buffer, 0, length));

}

/* success */

iUpload.uploadSuccess(b.toString());

/*close */

ds.close();

} catch (Exception e) {

iUpload.uploadFailed(e.toString());

}

}

public interface IUpload {

void uploadSuccess(String message);

void uploadFailed(String message);

}

}