我尝试开发Hello Analytics Reporting API v4。我按照文档步骤进行操作，但出现了一些错误：com.fasterxml.jackson.core.JsonParseException：意外字符（（CTRL-CHAR，代码130））：期望空格分隔根级别的值 在[来源：（FileInputStream）;行：1，列：3]
HelloAnalyticsReporting示例代码：
import com.google.api.client.googleapis.auth.oauth2.GoogleCredential;
import com.google.api.client.googleapis.javanet.GoogleNetHttpTransport;
import com.google.api.client.http.HttpTransport;
import com.google.api.client.json.JsonFactory;
import com.google.api.client.json.gson.GsonFactory;
import java.io.FileInputStream;
import java.io.IOException;
import java.security.GeneralSecurityException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import com.google.api.services.analyticsreporting.v4.AnalyticsReportingScopes;
import com.google.api.services.analyticsreporting.v4.AnalyticsReporting;
import com.google.api.services.analyticsreporting.v4.model.ColumnHeader;
import com.google.api.services.analyticsreporting.v4.model.DateRange;
import com.google.api.services.analyticsreporting.v4.model.DateRangeValues;
import com.google.api.services.analyticsreporting.v4.model.GetReportsRequest;
import com.google.api.services.analyticsreporting.v4.model.GetReportsResponse;
import com.google.api.services.analyticsreporting.v4.model.Metric;
import com.google.api.services.analyticsreporting.v4.model.Dimension;
import com.google.api.services.analyticsreporting.v4.model.MetricHeaderEntry;
import com.google.api.services.analyticsreporting.v4.model.Report;
import com.google.api.services.analyticsreporting.v4.model.ReportRequest;
import com.google.api.services.analyticsreporting.v4.model.ReportRow;
public class HelloAnalyticsReporting {
private static final String APPLICATION_NAME = "Hello Analytics Reporting";
private static final JsonFactory JSON_FACTORY = GsonFactory.getDefaultInstance();
private static final String KEY_FILE_LOCATION = "C:/Users/V002561/Downloads/charged-ridge-232301-a65076c6783a.p12";
private static final String VIEW_ID = "XXXXXXX";
public static void main(String[] args) {
try {
AnalyticsReporting service = initializeAnalyticsReporting();
GetReportsResponse response = getReport(service);
printResponse(response);
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* Initializes an Analytics Reporting API V4 service object.
*
* @return An authorized Analytics Reporting API V4 service object.
* @throws IOException
* @throws GeneralSecurityException
*/
private static AnalyticsReporting initializeAnalyticsReporting() throws GeneralSecurityException, IOException {
HttpTransport httpTransport = GoogleNetHttpTransport.newTrustedTransport();
GoogleCredential credential = GoogleCredential
.fromStream(new FileInputStream(KEY_FILE_LOCATION))
.createScoped(AnalyticsReportingScopes.all());
// Construct the Analytics Reporting service object.
return new AnalyticsReporting.Builder(httpTransport, JSON_FACTORY, credential)
.setApplicationName(APPLICATION_NAME).build();
}
/**
* Queries the Analytics Reporting API V4.
*
* @param service An authorized Analytics Reporting API V4 service object.
* @return GetReportResponse The Analytics Reporting API V4 response.
* @throws IOException
*/
private static GetReportsResponse getReport(AnalyticsReporting service) throws IOException {
// Create the DateRange object.
DateRange dateRange = new DateRange();
dateRange.setStartDate("7DaysAgo");
dateRange.setEndDate("today");
// Create the Metrics object.
Metric sessions = new Metric()
.setExpression("ga:sessions")
.setAlias("sessions");
Dimension pageTitle = new Dimension().setName("ga:pageTitle");
// Create the ReportRequest object.
ReportRequest request = new ReportRequest()
.setViewId(VIEW_ID)
.setDateRanges(Arrays.asList(dateRange))
.setMetrics(Arrays.asList(sessions))
.setDimensions(Arrays.asList(pageTitle));
ArrayList<ReportRequest> requests = new ArrayList<ReportRequest>();
requests.add(request);
// Create the GetReportsRequest object.
GetReportsRequest getReport = new GetReportsRequest()
.setReportRequests(requests);
// Call the batchGet method.
GetReportsResponse response = service.reports().batchGet(getReport).execute();
// Return the response.
return response;
}
/**
* Parses and prints the Analytics Reporting API V4 response.
*
* @param response An Analytics Reporting API V4 response.
*/
private static void printResponse(GetReportsResponse response) {
for (Report report: response.getReports()) {
ColumnHeader header = report.getColumnHeader();
List<String> dimensionHeaders = header.getDimensions();
List<MetricHeaderEntry> metricHeaders = header.getMetricHeader().getMetricHeaderEntries();
List<ReportRow> rows = report.getData().getRows();
if (rows == null) {
System.out.println("No data found for " + VIEW_ID);
return;
}
for (ReportRow row: rows) {
List<String> dimensions = row.getDimensions();
List<DateRangeValues> metrics = row.getMetrics();
for (int i = 0; i < dimensionHeaders.size() && i < dimensions.size(); i++) {
System.out.println(dimensionHeaders.get(i) + ": " + dimensions.get(i));
}
for (int j = 0; j < metrics.size(); j++) {
System.out.print("Date Range (" + j + "): ");
DateRangeValues values = metrics.get(j);
for (int k = 0; k < values.getValues().size() && k < metricHeaders.size(); k++) {
System.out.println(metricHeaders.get(k).getName() + ": " + values.getValues().get(k));
}
}
}
}
}
}
错误日志：
com.fasterxml.jackson.core.JsonParseException: Unexpected character ((CTRL-CHAR, code 130)): Expected space separating root-level values
at [Source: (FileInputStream); line: 1, column: 3]
at com.fasterxml.jackson.core.JsonParser._constructError(JsonParser.java:1804)
at com.fasterxml.jackson.core.base.ParserMinimalBase._reportError(ParserMinimalBase.java:669)
at com.fasterxml.jackson.core.base.ParserMinimalBase._reportUnexpectedChar(ParserMinimalBase.java:567)
at com.fasterxml.jackson.core.base.ParserMinimalBase._reportMissingRootWS(ParserMinimalBase.java:614)
at com.fasterxml.jackson.core.json.UTF8StreamJsonParser._verifyRootSpace(UTF8StreamJsonParser.java:1629)
at com.fasterxml.jackson.core.json.UTF8StreamJsonParser._parsePosNumber(UTF8StreamJsonParser.java:1369)
at com.fasterxml.jackson.core.json.UTF8StreamJsonParser._nextTokenNotInObject(UTF8StreamJsonParser.java:824)
at com.fasterxml.jackson.core.json.UTF8StreamJsonParser.nextToken(UTF8StreamJsonParser.java:723)
at com.google.api.client.json.jackson2.JacksonParser.nextToken(JacksonParser.java:55)
at com.google.api.client.json.JsonParser.startParsing(JsonParser.java:221)
at com.google.api.client.json.JsonParser.parse(JsonParser.java:380)
at com.google.api.client.json.JsonParser.parse(JsonParser.java:355)
at com.google.api.client.json.JsonObjectParser.parseAndClose(JsonObjectParser.java:87)
at com.google.api.client.json.JsonObjectParser.parseAndClose(JsonObjectParser.java:81)
at com.google.api.client.googleapis.auth.oauth2.GoogleCredential.fromStream(GoogleCredential.java:250)
at com.google.api.client.googleapis.auth.oauth2.GoogleCredential.fromStream(GoogleCredential.java:226)
at HelloAnalyticsReporting.initializeAnalyticsReporting(HelloAnalyticsReporting.java:56)
at HelloAnalyticsReporting.main(HelloAnalyticsReporting.java:36)
答案 0 :(得分：0)
错误在json解析器中。似乎您正在传递给它一个P12密钥文件而不是一个json文件。我猜，在创建您选择的P12而不是JSON的凭据时，请参阅文档中的create credentials。
我认为您仍然可以通过将加载密钥的代码更改为p12文件来使用：
GoogleCredential credential = new GoogleCredential.Builder()
.setServiceAccountPrivateKeyFromP12File(new FileInputStream(KEY_FILE_LOCATION))
.build()
.createScoped(AnalyticsReportingScopes.all());
我自己没有尝试过此操作，因此可能是错误的，请参阅GoogleCredential上的javadocs。最简单的事情可能就是重新创建凭据并获得一个json文件。
我希望这会有所帮助，并祝你好运。