我的目标是使用Google Cloud API之一,为此,我需要将GOOGLE_APPLICATION_CREDENTIALS设置为.json文件。
我收到此错误消息以及有关如何解决它的链接:
应用程序默认凭据不可用。如果它们在Google Compute Engine中运行,则可用。否则,必须定义环境变量GOOGLE_APPLICATION_CREDENTIALS,指向指向定义凭据的文件。有关更多信息,请参见https://developers.google.com/accounts/docs/application-default-credentials。
在通过cmd(set GOOGLE_APPLICATION_CREDENTIALS=C:\...\...\File.json
)将变量设置为我刚刚创建的.json文件后,仍然出现相同的确切错误。
我在做什么错?
编辑:
我正在使用Eclipse JEE。我想使用google cloud vision API从本地图像检测Web实体。首先使用html公式,我请求图像并将其发送到servlet类:(index.html)
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<title>Tittle</title>
</head>
<body>
<h1>Welcome!</h1>
<h4>Upload an image: </h4>
<div id="searchDiv">
<form id="searchForm" action="webdetection" method="get" enctype="multipart/form-data">
<div><input type="file" name="image" accept=".JPG, .JPEG, .PNG8, .PNG24, .GIF, .BMP, .WEBP, .RAW, .ICO, .PDF, .TIFF" required>
</div>
<div><input type="submit" name="searchBtn" value="Aceptar">
</div>
</form>
</div>
</body>
</html>
这些是servlet及其映射:
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
version="2.5">
<servlet>
<web:description></web:description>
<servlet-name>Web Detection</servlet-name>
<servlet-class>aiss.controller.google_vision.VisionServletController</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>Web Detection</servlet-name>
<url-pattern>/webdetection</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
</welcome-file-list>
</web-app>
这是用于云计算的Servlet:
package aiss.controller.google_vision;
import java.io.IOException;
import java.io.PrintStream;
import java.util.logging.Level;
import java.util.logging.Logger;
import aiss.model.CloudVision.DeteccionWeb;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.ServletOutputStream;
public class VisionServletController extends HttpServlet {
private static final Logger log = Logger.getLogger(VisionServletController.class.getName());
public void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException {
log.log(Level.FINE, "Processing GET request");
PrintStream ps = new PrintStream(resp.getOutputStream());
try {
resp.setContentType("text/plain");
DeteccionWeb.detectWebDetectionsGcs(req.getRequestURL().toString(),ps);
}catch(Exception e) {
ps.println(e.toString());//this prints the previous error message I show
}
}
}
以及位于servlet的Web检测类重定向:(大多数导入都没有被使用,但是由于该类在被修改之前一直被修改,所以我不知道我需要哪个类)
package aiss.model.CloudVision;
import com.google.api.gax.longrunning.OperationFuture;
import com.google.cloud.vision.v1.AnnotateFileResponse;
import com.google.cloud.vision.v1.AnnotateFileResponse.Builder;
import com.google.cloud.vision.v1.AnnotateImageRequest;
import com.google.cloud.vision.v1.AnnotateImageResponse;
import com.google.cloud.vision.v1.AsyncAnnotateFileRequest;
import com.google.cloud.vision.v1.AsyncAnnotateFileResponse;
import com.google.cloud.vision.v1.AsyncBatchAnnotateFilesResponse;
import com.google.cloud.vision.v1.BatchAnnotateImagesResponse;
import com.google.cloud.vision.v1.Block;
import com.google.cloud.vision.v1.ColorInfo;
import com.google.cloud.vision.v1.CropHint;
import com.google.cloud.vision.v1.CropHintsAnnotation;
import com.google.cloud.vision.v1.DominantColorsAnnotation;
import com.google.cloud.vision.v1.EntityAnnotation;
import com.google.cloud.vision.v1.FaceAnnotation;
import com.google.cloud.vision.v1.Feature;
import com.google.cloud.vision.v1.Feature.Type;
import com.google.cloud.vision.v1.GcsDestination;
import com.google.cloud.vision.v1.GcsSource;
import com.google.cloud.vision.v1.Image;
import com.google.cloud.vision.v1.ImageAnnotatorClient;
import com.google.cloud.vision.v1.ImageContext;
import com.google.cloud.vision.v1.ImageSource;
import com.google.cloud.vision.v1.InputConfig;
import com.google.cloud.vision.v1.LocalizedObjectAnnotation;
import com.google.cloud.vision.v1.LocationInfo;
import com.google.cloud.vision.v1.OperationMetadata;
import com.google.cloud.vision.v1.OutputConfig;
import com.google.cloud.vision.v1.Page;
import com.google.cloud.vision.v1.Paragraph;
import com.google.cloud.vision.v1.SafeSearchAnnotation;
import com.google.cloud.vision.v1.Symbol;
import com.google.cloud.vision.v1.TextAnnotation;
import com.google.cloud.vision.v1.WebDetection;
import com.google.cloud.vision.v1.WebDetection.WebEntity;
import com.google.cloud.vision.v1.WebDetection.WebImage;
import com.google.cloud.vision.v1.WebDetection.WebLabel;
import com.google.cloud.vision.v1.WebDetection.WebPage;
import com.google.cloud.vision.v1.WebDetectionParams;
import com.google.cloud.vision.v1.Word;
import com.google.protobuf.ByteString;
import com.google.protobuf.util.JsonFormat;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.PrintStream;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.concurrent.TimeUnit;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class DeteccionWeb {
/**
* Detects whether the remote image on Google Cloud Storage has features you would want to
* moderate.
*
* @param gcsPath The path to the remote on Google Cloud Storage file to detect web annotations.
* @param out A {@link PrintStream} to write the results to.
* @throws Exception on errors while closing the client.
* @throws IOException on Input/Output errors.
*/
public static void detectWebDetectionsGcs(String gcsPath, PrintStream out) throws Exception,
IOException {
List<AnnotateImageRequest> requests = new ArrayList<>();
ImageSource imgSource = ImageSource.newBuilder().setImageUri(gcsPath).build();
Image img = Image.newBuilder().setSource(imgSource).build();
Feature feat = Feature.newBuilder().setType(Type.WEB_DETECTION).build();
AnnotateImageRequest request =
AnnotateImageRequest.newBuilder().addFeatures(feat).setImage(img).build();
requests.add(request);
try (ImageAnnotatorClient client = ImageAnnotatorClient.create()) {
BatchAnnotateImagesResponse response = client.batchAnnotateImages(requests);
List<AnnotateImageResponse> responses = response.getResponsesList();
for (AnnotateImageResponse res : responses) {
if (res.hasError()) {
out.printf("Error: %s\n", res.getError().getMessage());
return;
}
// Search the web for usages of the image. You could use these signals later
// for user input moderation or linking external references.
// For a full list of available annotations, see http://g.co/cloud/vision/docs
WebDetection annotation = res.getWebDetection();
out.println("Entity:Id:Score");
out.println("===============");
for (WebEntity entity : annotation.getWebEntitiesList()) {
out.println(entity.getDescription() + " : " + entity.getEntityId() + " : "
+ entity.getScore());
}
for (WebLabel label : annotation.getBestGuessLabelsList()) {
out.format("\nBest guess label: %s", label.getLabel());
}
}
}
}
}
[我的主要嫌疑人是ImageSource.newBuilder().setImageUri(gcsPath)
,因为似乎Cloud vision API可能不适用于不属于Google云存储的http / https网址。看来可以用凭据解决,但我无法通过它。
如果您在eclipse中使用Tomcat,则以下线程应该很有帮助How to set GOOGLE_APPLICATION_CREDENTIALS for Google Compute Engine?。