com.qcloud.cos.demo.ci.BasicImageProcessing Maven / Gradle / Ivy
package com.qcloud.cos.demo.ci;
import com.qcloud.cos.COSClient;
import com.qcloud.cos.model.GetObjectRequest;
import java.io.File;
/**
* 基础图片处理使用Demo https://cloud.tencent.com/document/product/460/36540
* Demo均为下载时处理，如需上传时处理或云上处理则使用对应方法，图片处理规则相同。
* 此处为演示参数使用，完整处理规则请参考API文档
*/
public class BasicImageProcessing {
public static void main(String[] args) throws Exception {
COSClient cosClient = ClientUtils.getTestClient();
imageRotateDemo(cosClient);
cosClient.shutdown();
}
public static void imageProcessing(COSClient cosClient, String rule) {
//图片所在bucket名称
String bucketName = "examplebucket-1250000000";
//图片在bucket中的相对位置，比如根目录下file文件夹中的demo.png路径为file/demo.png
String key = "image.png";
GetObjectRequest getObj = new GetObjectRequest(bucketName, key);
getObj.putCustomQueryParameter(rule, null);
cosClient.getObject(getObj, new File("demo.png"));
}
/**
* 缩放图片宽高为原图50%
* https://cloud.tencent.com/document/product/460/36540
*/
public static void imageZoomDemo(COSClient cosClient) {
String rule = "imageMogr2/thumbnail/!50p";
imageProcessing(cosClient, rule);
}
/**
* 内切圆裁剪功能，radius是内切圆的半径150
* https://cloud.tencent.com/document/product/460/36541
*/
public static void imageCroppingDemo(COSClient cosClient) {
String rule = "imageMogr2/iradius/150";
imageProcessing(cosClient, rule);
}
/**
* 图片顺时针旋转角度90 取值范围0 - 360
* https://cloud.tencent.com/document/product/460/36542
*/
public static void imageRotateDemo(COSClient cosClient) {
String rule = "imageMogr2/rotate/90";
imageProcessing(cosClient, rule);
}
/**
* 将图片转换为 png 格式
* https://cloud.tencent.com/document/product/460/36543
*/
public static void imageConvertingFormatDemo(COSClient cosClient) {
String rule = "imageMogr2/format/png";
imageProcessing(cosClient, rule);
}
/**
* 设置图片的绝对质量为60
* https://cloud.tencent.com/document/product/460/36544
*/
public static void imageQualityChangeDemo(COSClient cosClient) {
String rule = "imageMogr2/quality/60";
imageProcessing(cosClient, rule);
}
/**
* 模糊半径取8，sigma 值取5，进行高斯模糊处理
* https://cloud.tencent.com/document/product/460/36545
*/
public static void imageGaussianBlurringDemo(COSClient cosClient) {
String rule = "imageMogr2/blur/8x5";
imageProcessing(cosClient, rule);
}
/**
* 将图片亮度提高70
* https://cloud.tencent.com/document/product/460/51808
*/
public static void imageAdjustingBrightnessDemo(COSClient cosClient) {
String rule = "imageMogr2/bright/70";
imageProcessing(cosClient, rule);
}
/**
* 将图片对比度降低50
* https://cloud.tencent.com/document/product/460/51809
*/
public static void imageAdjustingContrastDemo(COSClient cosClient) {
String rule = "imageMogr2/contrast/-50";
imageProcessing(cosClient, rule);
}
/**
* 设置锐化参数为70
* https://cloud.tencent.com/document/product/460/51809
*/
public static void imageSharpeningDemo(COSClient cosClient) {
String rule = "imageMogr2/sharpen/70";
imageProcessing(cosClient, rule);
}
/**
* 设图片变为灰度图
* https://cloud.tencent.com/document/product/460/66519
*/
public static void grayscaleImageDemo(COSClient cosClient) {
String rule = "imageMogr2/grayscale/1";
imageProcessing(cosClient, rule);
}
/**
* 设置水印图片,并指定水印位置
* https://cloud.tencent.com/document/product/460/51809
*/
public static void imageWatermarkingDemo(COSClient cosClient) {
String rule = "watermark/1/image/aHR0cDovL2V4YW1wbGVzLTEyNTEwMDAwMDQucGljc2gubXlxY2xvdWQuY29tL3NodWl5aW4uanBn/gravity/southeast";
imageProcessing(cosClient, rule);
}
/**
* 设置水印文字,并指定水印位置
* https://cloud.tencent.com/document/product/460/6951
*/
public static void textWatermarkingDemo(COSClient cosClient) {
String rule = "watermark/2/text/6IW-6K6v5LqRwrfkuIfosaHkvJjlm74/fill/IzNEM0QzRA/fontsize/20/dissolve/50/gravity/northeast/dx/20/dy/20/batch/1/degree/45";
imageProcessing(cosClient, rule);
}
/**
* 去除图片元信息
* https://cloud.tencent.com/document/product/460/36547
*/
public static void removingImageMetadata(COSClient cosClient) {
String rule = "imageMogr2/strip";
imageProcessing(cosClient, rule);
}
/**
* 选用样式1，并限定缩略图的宽高最小值为400 × 600 绝对质量为85
* https://cloud.tencent.com/document/product/460/6929
*/
public static void quickThumbnailTemplate(COSClient cosClient) {
String rule = "imageView2/1/w/400/h/600/q/85";
imageProcessing(cosClient, rule);
}
/**
* 将 JPG 图片转换为 PNG 格式，并限制图片大小为15KB
* https://cloud.tencent.com/document/product/460/56732
*/
public static void limitingOutputImageSize(COSClient cosClient) {
String rule = "imageMogr2/strip/format/png/size-limit/15k!";
imageProcessing(cosClient, rule);
}
/**
* 管道操作符|能够实现对图片按顺序进行多种处理。
* 用户可以通过管道操作符将多个处理参数分隔开，从而实现在一次访问中按顺序对图片进行不同处理
* https://cloud.tencent.com/document/product/460/15293
*/
public static void pipelineOperatorsDemo(COSClient cosClient) {
//对缩放后的图片进行文字水印操作
String rule = "imageMogr2/thumbnail/!50p|watermark/2/text/5pWw5o2u5LiH6LGh/fill/I0ZGRkZGRg==/fontsize/30/dx/20/dy/20";
imageProcessing(cosClient, rule);
}
public static void obtainingImageAverageHueDemo(COSClient cosClient) {
String rule = "imageMogr2/contrast/-50";
imageProcessing(cosClient, rule);
}
public static void obtainingBasicImageInformationDemo(COSClient cosClient) {
String rule = "imageMogr2/contrast/-50";
imageProcessing(cosClient, rule);
}
public static void obtainingImageEXIFDemo(COSClient cosClient) {
String rule = "imageMogr2/contrast/-50";
imageProcessing(cosClient, rule);
}
}