Amazon web services 未找到aws凭据错误

我有一个jar上传到aws lambda，但它不断抛出以下错误：

 {
  "errorMessage": "java.lang.NullPointerException",
  "errorType": "java.lang.NullPointerException",
  "stackTrace": [
    "com.amazonaws.auth.profile.ProfilesConfigFile.<init>(ProfilesConfigFile.java:143)",
    "com.amazonaws.auth.profile.ProfilesConfigFile.<init>(ProfilesConfigFile.java:132)",
    "com.amazonaws.auth.profile.ProfilesConfigFile.<init>(ProfilesConfigFile.java:99)",
    "com.amazonaws.auth.profile.ProfileCredentialsProvider.getCredentials(ProfileCredentialsProvider.java:135)",
    "com.amazonaws.http.AmazonHttpClient.getCredentialsFromContext(AmazonHttpClient.java:802)",
    "com.amazonaws.http.AmazonHttpClient.executeOneRequest(AmazonHttpClient.java:828)",
    "com.amazonaws.http.AmazonHttpClient.executeHelper(AmazonHttpClient.java:723)",
    "com.amazonaws.http.AmazonHttpClient.doExecute(AmazonHttpClient.java:475)",
    "com.amazonaws.http.AmazonHttpClient.executeWithTimer(AmazonHttpClient.java:437)",
    "com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:386)",
    "com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient.doInvoke(AmazonDynamoDBClient.java:2074)",
    "com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient.invoke(AmazonDynamoDBClient.java:2044)",
    "com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient.putItem(AmazonDynamoDBClient.java:1580)",
    "com.amazonaws.services.dynamodbv2.document.internal.PutItemImpl.doPutItem(PutItemImpl.java:85)",
    "com.amazonaws.services.dynamodbv2.document.internal.PutItemImpl.putItem(PutItemImpl.java:41)",
    "com.amazonaws.services.dynamodbv2.document.Table.putItem(Table.java:144)",
    "augury.api.SaveAuguryApi.handleRequest(SaveAuguryApi.java:46)",
    "sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)",
    "sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)",
    "sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)",
    "java.lang.reflect.Method.invoke(Method.java:498)"
  ]
}

{
“errorMessage”：“java.lang.NullPointerException”，
“errorType”：“java.lang.NullPointerException”，
“stackTrace”：[
“com.amazonaws.auth.profile.ProfilesConfigFile.（ProfilesConfigFile.java:143）”，
“com.amazonaws.auth.profile.ProfilesConfigFile.（ProfilesConfigFile.java:132）”，
“com.amazonaws.auth.profile.ProfilesConfigFile.（ProfilesConfigFile.java:99）”，
“com.amazonaws.auth.profile.ProfileCredentialsProvider.getCredentials（ProfileCredentialsProvider.java:135）”，
“com.amazonaws.http.AmazonHttpClient.getCredentialsFromContext（AmazonHttpClient.java:802）”，
“com.amazonaws.http.AmazonHttpClient.executeOneRequest（AmazonHttpClient.java:828）”，
“com.amazonaws.http.AmazonHttpClient.executeHelper（AmazonHttpClient.java:723）”，
“com.amazonaws.http.AmazonHttpClient.doExecute（AmazonHttpClient.java:475）”，
“com.amazonaws.http.AmazonHttpClient.executeWithTimer（AmazonHttpClient.java:437）”，
“com.amazonaws.http.AmazonHttpClient.execute（AmazonHttpClient.java:386）”，
“com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient.doInvoke（AmazonDynamoDBClient.java:2074）”，
“com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient.invoke（AmazonDynamoDBClient.java:2044）”，
“com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient.putItem（AmazonDynamoDBClient.java:1580）”，
“com.amazonaws.services.dynamodbv2.document.internal.PutItemImpl.doPutItem（PutItemImpl.java:85）”，
“com.amazonaws.services.dynamodbv2.document.internal.PutItemImpl.putItem（PutItemImpl.java:41）”，
“com.amazonaws.services.dynamodbv2.document.Table.putItem（Table.java:144）”，
“augury.api.SaveAuguryApi.HandlerRequest（SaveAuguryApi.java:46）”，
“sun.reflect.NativeMethodAccessorImpl.invoke0（本机方法）”，
“sun.reflect.NativeMethodAccessorImpl.invoke（NativeMethodAccessorImpl.java:62）”，
“sun.reflect.DelegatingMethodAccessorImpl.invoke（DelegatingMethodAccessorImpl.java:43）”，
“java.lang.reflect.Method.invoke（Method.java:498）”
]
}

和堆栈跟踪：

 java.lang.NullPointerException: java.lang.NullPointerException
java.lang.NullPointerException
    at com.amazonaws.auth.profile.ProfilesConfigFile.<init>(ProfilesConfigFile.java:143)
    at com.amazonaws.auth.profile.ProfilesConfigFile.<init>(ProfilesConfigFile.java:132)
    at com.amazonaws.auth.profile.ProfilesConfigFile.<init>(ProfilesConfigFile.java:99)
    at com.amazonaws.auth.profile.ProfileCredentialsProvider.getCredentials(ProfileCredentialsProvider.java:135)
    at com.amazonaws.http.AmazonHttpClient.getCredentialsFromContext(AmazonHttpClient.java:802)
    at com.amazonaws.http.AmazonHttpClient.executeOneRequest(AmazonHttpClient.java:828)
    at com.amazonaws.http.AmazonHttpClient.executeHelper(AmazonHttpClient.java:723)
    at com.amazonaws.http.AmazonHttpClient.doExecute(AmazonHttpClient.java:475)
    at com.amazonaws.http.AmazonHttpClient.executeWithTimer(AmazonHttpClient.java:437)
    at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:386)
    at com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient.doInvoke(AmazonDynamoDBClient.java:2074)
    at com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient.invoke(AmazonDynamoDBClient.java:2044)
    at com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient.putItem(AmazonDynamoDBClient.java:1580)
    at com.amazonaws.services.dynamodbv2.document.internal.PutItemImpl.doPutItem(PutItemImpl.java:85)
    at com.amazonaws.services.dynamodbv2.document.internal.PutItemImpl.putItem(PutItemImpl.java:41)
    at com.amazonaws.services.dynamodbv2.document.Table.putItem(Table.java:144)
    at augury.api.SaveAuguryApi.handleRequest(SaveAuguryApi.java:46)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)

END RequestId: b2b9807e-6a09-11e6-9873-2588e6cfa497
REPORT RequestId: b2b9807e-6a09-11e6-9873-2588e6cfa497  Duration: 305.85 ms Billed Duration: 400 ms     Memory Size: 512 MB Max Memory Used: 61 MB

java.lang.NullPointerException:java.lang.NullPointerException
java.lang.NullPointerException
在com.amazonaws.auth.profile.ProfilesConfigFile上。（ProfilesConfigFile.java:143）
位于com.amazonaws.auth.profile.ProfilesConfigFile.（ProfilesConfigFile.java:132）
位于com.amazonaws.auth.profile.ProfilesConfigFile.（ProfilesConfigFile.java:99）
在com.amazonaws.auth.profile.ProfileCredentialsProvider.getCredentials上（ProfileCredentialsProvider.java:135）
在com.amazonaws.http.AmazonHttpClient.getCredentialsFromContext（AmazonHttpClient.java:802）上
在com.amazonaws.http.AmazonHttpClient.executeOneRequest（AmazonHttpClient.java:828）上
在com.amazonaws.http.AmazonHttpClient.executeHelper（AmazonHttpClient.java:723）
位于com.amazonaws.http.AmazonHttpClient.doExecute（AmazonHttpClient.java:475）
在com.amazonaws.http.AmazonHttpClient.executeWithTimer（AmazonHttpClient.java:437）上
在com.amazonaws.http.AmazonHttpClient.execute上（AmazonHttpClient.java:386）
位于com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient.doInvoke（AmazonDynamoDBClient.java:2074）
位于com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient.invoke（AmazonDynamoDBClient.java:2044）
位于com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient.putItem（AmazonDynamoDBClient.java:1580）
位于com.amazonaws.services.dynamodbv2.document.internal.putitempl.doPutItem（PutItemImpl.java:85）
位于com.amazonaws.services.dynamodbv2.document.internal.PutItemImpl.putItem（PutItemImpl.java:41）
位于com.amazonaws.services.dynamodbv2.document.Table.putItem（Table.java:144）
SaveAuguryApi.handleRequest（SaveAuguryApi.java:46）
在sun.reflect.NativeMethodAccessorImpl.invoke0（本机方法）处
位于sun.reflect.NativeMethodAccessorImpl.invoke（NativeMethodAccessorImpl.java:62）
在sun.reflect.DelegatingMethodAccessorImpl.invoke（DelegatingMethodAccessorImpl.java:43）中
位于java.lang.reflect.Method.invoke（Method.java:498）
结束请求ID:b2b9807e-6a09-11e6-9873-2588e6cfa497
报告请求ID:b2b9807e-6a09-11e6-9873-2588e6cfa497持续时间：305.85毫秒计费持续时间：400毫秒内存大小：512 MB最大使用内存：61 MB

还有我的lambda java代码：

    package augury.api;

import java.util.List;

import org.apache.commons.lang3.StringUtils;
import org.apache.log4j.Logger;

import com.amazonaws.auth.profile.ProfileCredentialsProvider;
import com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient;
import com.amazonaws.services.dynamodbv2.document.DynamoDB;
import com.amazonaws.services.dynamodbv2.document.Item;
import com.amazonaws.services.dynamodbv2.document.Table;
import com.amazonaws.services.lambda.runtime.Context;
import com.amazonaws.services.lambda.runtime.RequestHandler;

import augury.pojo.AuguryResponse;
import augury.pojo.AuguryResult;

public class SaveAuguryApi implements RequestHandler<AuguryResult, AuguryResponse> {

    // Initialize the Log4j logger.
    static final Logger log       = Logger.getLogger(SaveAuguryApi.class);

    static DynamoDB     dynamoDB  = new DynamoDB(new AmazonDynamoDBClient(new ProfileCredentialsProvider()));

    static String       tableName = "tarot_history";

    public AuguryResponse handleRequest(AuguryResult result, Context context) {
        String userId = result.getUserId();
        List<Integer> tarotIds = result.getTarotIds();
        String createTime = result.getCreate_time();
        if (log.isDebugEnabled()) {
            log.debug("requestId = " + context.getAwsRequestId() + ", userId = " + userId + ", tarotIds = " + tarotIds
                    + ", create_time = " + createTime);
        }
        if (StringUtils.isBlank(userId) || tarotIds == null || tarotIds.isEmpty() || StringUtils.isBlank(createTime)) {
            return new AuguryResponse(400, "this request doesn't contain rightful parameters, please check log");
        }

        Table table = dynamoDB.getTable(tableName);
        Item item = new Item();
        item.withString("create_time", createTime);
        item.withString("user_id", userId);
        item.withList("tarot_ids", tarotIds);
        item.withInt("id", 1);
        table.putItem(item);
        return new AuguryResponse(201, "tarot history created");
    }

}

package augury.api；
导入java.util.List；
导入org.apache.commons.lang3.StringUtils；
导入org.apache.log4j.Logger；
导入com.amazonaws.auth.profile.ProfileCredentialsProvider；
导入com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient；
导入com.amazonaws.services.dynamodbv2.document.DynamoDB；
导入com.amazonaws.services.dynamodbv2.document.Item；
导入com.amazonaws.services.dynamodbv2.document.Table；
导入com.amazonaws.services.lambda.runtime.Context；
导入com.amazonaws.services.lambda.runtime.RequestHandler；
导入augury.pojo.AuguryResponse；
导入augury.pojo.AuguryResult；
公共类SaveAuguryApi实现RequestHandler
您正在查看的示例假设您已将凭据属性保存到文件中，而在Lambda环境中不会这样。要使用分配给Lambda函数的IAM角色，请更改以下内容：

static DynamoDB     dynamoDB  = new DynamoDB(new AmazonDynamoDBClient(new ProfileCredentialsProvider()));

为此：

static DynamoDB     dynamoDB  = new DynamoDB(new AmazonDynamoDBClient());

您的标题显示您收到一条“未找到凭据”错误消息，但您实际发布的错误消息是“空指针异常”。为什么您要使用ProfileCredentialsProvider

？你应该给Lambda函数分配一个IAM角色，让AWS SDK自动使用它。嗨，我想我已经把IAM角色分配给Lambda了。如果我不使用ProfileCredentialsProvider，我如何通过lamdba函数将文档插入到dynamodb？谢谢，顺便说一句，我发现如果我想让lambda将Item放入dynamodb中的表中，我需要使用策略向其添加一个角色