<plugin>

<groupId>org.apache.maven.plugins</groupId>

<artifactId>maven-compiler-plugin</artifactId>

<version>2.2</version>

<configuration>

<compilerArguments>

<bootclasspath>${java.home}/lib/rt.jar;${java.home}/lib/jce.jar</bootclasspath>

</compilerArguments>

</configuration>

</plugin>

var files = $('#userImageUpload')[0].files;

files[0]

* Upload from request stream

*

*/

public static List<String> uploadS3File(Request req) throws Exception {

List<String> fileUrls = new ArrayList<String>();

setFileStoreAttr(req);

try {

Collection<Part> parts = getValidParts(req);

if (parts.size() > 0) {

for (Part part : parts) {

String path = storeFolderName + '/' + UUID.randomUUID();

ObjectMetadata meta = new ObjectMetadata();

meta.setContentType(part.getContentType());

InputStream in = part.getInputStream();

PutObjectRequest request;

if (part.getContentType().contentEquals("image")) {

request = new PutObjectRequest(s3BucketName,

path,

in,

meta);

} else {

request = new PutObjectRequest(s3BucketName,

path,

compressImageByWeithAndHeight(in, 0.5f,200,200),

meta);

}

request.withCannedAcl(CannedAccessControlList.PublicRead);

s3.putObject(request);

fileUrls.add(Helper.getS3FilePath(path));

}

}

} catch (Exception e) {

e.printStackTrace();

}

return fileUrls;

}

/**

* helper for file/image upload

*

* @param req

* @return

*/

private static Collection<Part> getValidParts(Request req) {

Collection<Part> parts = new ArrayList<Part>();

try {

for (Part part : req.raw().getParts()) {

ApplicationPart appPart = (ApplicationPart) part;

String fileName = appPart.getSubmittedFileName();

if (fileName != null && !fileName.isEmpty()) {

parts.add(part);

}

}

} catch (Exception e) {

e.printStackTrace();

}

return parts;

}

/**

* compress image by width , height , quantity

*

* @param input

* @param quantity

* @param width

* @param height

* @return

*/

private static InputStream compressImageByWeithAndHeight(InputStream input, float quantity,int width,int height) {

quantity = quantity == 0f ? 0.5f : quantity;

try {

ImageInputStream imageInput = ImageIO.createImageInputStream(input);

Image image = ImageIO.read(imageInput);

/** 宽,高设定 */

BufferedImage tag = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);

tag.getGraphics().drawImage(image, 0, 0, width, height, null);

ByteArrayOutputStream out = new ByteArrayOutputStream();

JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);

JPEGEncodeParam jep = JPEGCodec.getDefaultJPEGEncodeParam(tag);

/** 压缩质量 */

jep.setQuality(quantity, true);

encoder.encode(tag, jep);

ByteArrayInputStream result = new ByteArrayInputStream(out.toByteArray());

out.close();

return result;

} catch (Exception e) {

e.printStackTrace();

}

return input;

}

}

/**

* Get file access url

*

* @param key

* @return

*/

public static String getS3FilePath(String key) {

return s3Domain + '/' + key;

}