我是 DynamoDB 的新手，在将 DynamoDB 与 Spring 启动配合使用时遇到null (Service: AmazonDynamoDBv2; Status Code: 404; Error Code: null; Request ID: null)错误。服务器启动得很好，但在进行数据库调用时中断。我在本地计算机上设置了 DynamoDB。我的 Gradle 文件如下所示：
dependencies {
implementation 'org.springframework.data:spring-data-jpa'
implementation "org.springframework.data:spring-data-commons:2.0.3.RELEASE"
implementation 'org.springframework.data:spring-data-releasetrain:1.4.6.RELEASE'
implementation 'org.springframework.boot:spring-boot-starter-freemarker'
implementation 'org.springframework.boot:spring-boot-starter-thymeleaf'
implementation 'org.springframework.boot:spring-boot-starter-web'
implementation 'com.github.derjust:spring-data-dynamodb:5.1.0'
implementation group: 'com.amazonaws', name: 'aws-java-sdk-dynamodb', version: '1.11.348'
compileOnly 'org.projectlombok:lombok'
annotationProcessor 'org.projectlombok:lombok'
}
我已经在1.11.696(最新(和其他几个版本中尝试过这个。
配置文件
@Configuration
public class DynamoDBConfig {
@Value("${amazon.dynamodb.endpoint}")
private String amazonDynamoDBEndpoint;
@Value("${amazon.dynamodb.region}")
private String amazonDynamoDBSigningRegion;
@Value("${amazon.aws.accesskey}")
private String amazonAWSAccessKey;
@Value("${amazon.aws.secretkey}")
private String amazonAWSSecretKey;
@Value("${dynamodb.connection.timeout}")
private Integer dynamoDBConnTimeout;
@Value("${dynamodb.request.timeout}")
private Integer dynamoDBRequestTimeout;
@Value("${dynamodb.max.connections}")
private Integer dynamoDBMaxConn;
@Bean
public AWSStaticCredentialsProvider awsStaticCredentialsProvider() {
return new AWSStaticCredentialsProvider(new BasicAWSCredentials(
amazonAWSAccessKey, amazonAWSSecretKey));
}
@Bean
public ClientConfiguration dynamoDBConf() {
return new ClientConfiguration()
.withConnectionTimeout(dynamoDBConnTimeout)
.withRequestTimeout(dynamoDBRequestTimeout)
.withMaxConnections(dynamoDBMaxConn);
}
@Bean
public AmazonDynamoDB amazonDynamoDB(AWSStaticCredentialsProvider awsStaticCredentialsProvider, ClientConfiguration dynamoDBConf) {
AmazonDynamoDBClientBuilder builder = AmazonDynamoDBClientBuilder.standard()
.withCredentials(awsStaticCredentialsProvider)
.withClientConfiguration(dynamoDBConf);
if ( StringUtils.isEmpty(amazonDynamoDBEndpoint) ) {
builder.withRegion(dynamoDBRegions());
} else {
builder.withEndpointConfiguration(new AwsClientBuilder.EndpointConfiguration(amazonDynamoDBEndpoint, dynamoDBRegions().getName()));
}
return builder.build();
}
@Bean
public DynamoDBMapper dynamoDBMapper(AmazonDynamoDB amazonDynamoDB){
return new DynamoDBMapper(amazonDynamoDB);
}
private Regions dynamoDBRegions() {
try{
return Regions.fromName(amazonDynamoDBSigningRegion);
}catch (IllegalArgumentException ex){
return Regions.AP_SOUTHEAST_1;
}
}
服务
public class TemplateService {
private DynamoDBMapper dynamoDBMapper;
private AmazonDynamoDB amazonDynamoDB;
@Autowired
public TemplateService(AmazonDynamoDB amazonDynamoDB, DynamoDBMapper dynamoDBMapper){
this.dynamoDBMapper = dynamoDBMapper;
this.amazonDynamoDB = amazonDynamoDB;
}
public void init(){
CreateTableRequest req = dynamoDBMapper.generateCreateTableRequest(Template.class);
req.setProvisionedThroughput(new ProvisionedThroughput(5L, 5L));
amazonDynamoDB.createTable(req);
}
public void save(Template data){
init();
dynamoDBMapper.save(data);
}
public Template getById(String templateId){
return dynamoDBMapper.load(Template.class,"1", templateId);
}
}
实体波乔
@DynamoDBTable(tableName = "template")
public class Template {
String id;
String templateId;
String name;
public Template() {
}
public Template(String id, String templateId) {
this.id = id;
this.templateId = templateId;
}
@DynamoDBHashKey
@DynamoDBAutoGeneratedKey
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
@DynamoDBRangeKey(attributeName = "template_id")
@JsonProperty("template_id")
public String getTemplateId() {
return templateId;
}
public void setTemplateId(String templateId) {
this.templateId = templateId;
}
@DynamoDBAttribute
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
完整日志
com.amazonaws.services.dynamodbv2.model.AmazonDynamoDBException: null (Service: AmazonDynamoDBv2; Status Code: 404; Error Code: null; Request ID: null)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.handleErrorResponse(AmazonHttpClient.java:1712) ~[aws-java-sdk-core-1.11.696.jar:na]
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeOneRequest(AmazonHttpClient.java:1367) ~[aws-java-sdk-core-1.11.696.jar:na]
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeHelper(AmazonHttpClient.java:1113) ~[aws-java-sdk-core-1.11.696.jar:na]
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.doExecute(AmazonHttpClient.java:770) ~[aws-java-sdk-core-1.11.696.jar:na]
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeWithTimer(AmazonHttpClient.java:744) ~[aws-java-sdk-core-1.11.696.jar:na]
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.execute(AmazonHttpClient.java:726) ~[aws-java-sdk-core-1.11.696.jar:na]
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.access$500(AmazonHttpClient.java:686) ~[aws-java-sdk-core-1.11.696.jar:na]
at com.amazonaws.http.AmazonHttpClient$RequestExecutionBuilderImpl.execute(AmazonHttpClient.java:668) ~[aws-java-sdk-core-1.11.696.jar:na]
at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:532) ~[aws-java-sdk-core-1.11.696.jar:na]
at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:512) ~[aws-java-sdk-core-1.11.696.jar:na]
at com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient.doInvoke(AmazonDynamoDBClient.java:5110) ~[aws-java-sdk-dynamodb-1.11.696.jar:na]
at com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient.invoke(AmazonDynamoDBClient.java:5077) ~[aws-java-sdk-dynamodb-1.11.696.jar:na]
at com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient.executeGetItem(AmazonDynamoDBClient.java:2197) ~[aws-java-sdk-dynamodb-1.11.696.jar:na]
at com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient.getItem(AmazonDynamoDBClient.java:2163) ~[aws-java-sdk-dynamodb-1.11.696.jar:na]
at com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBMapper.load(DynamoDBMapper.java:431) ~[aws-java-sdk-dynamodb-1.11.696.jar:na]
at com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBMapper.load(DynamoDBMapper.java:448) ~[aws-java-sdk-dynamodb-1.11.696.jar:na]
at com.amazonaws.services.dynamodbv2.datamodeling.AbstractDynamoDBMapper.load(AbstractDynamoDBMapper.java:85) ~[aws-java-sdk-dynamodb-1.11.696.jar:na]
at com.swiggy.owl.template.service.TemplateService.getById(TemplateService.java:35) ~[main/:na]
at com.swiggy.owl.template.controller.TemplateController.get(TemplateController.java:23) ~[main/:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_191]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_191]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_191]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_191]
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:190) ~[spring-web-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138) ~[spring-web-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:106) ~[spring-webmvc-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:888) ~[spring-webmvc-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:793) ~[spring-webmvc-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040) ~[spring-webmvc-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943) ~[spring-webmvc-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) ~[spring-webmvc-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898) ~[spring-webmvc-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:634) ~[tomcat-embed-core-9.0.29.jar:9.0.29]
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) ~[spring-webmvc-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741) ~[tomcat-embed-core-9.0.29.jar:9.0.29]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) ~[tomcat-embed-core-9.0.29.jar:9.0.29]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.29.jar:9.0.29]
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.29.jar:9.0.29]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.29.jar:9.0.29]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.29.jar:9.0.29]
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.29.jar:9.0.29]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.29.jar:9.0.29]
at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.29.jar:9.0.29]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.29.jar:9.0.29]
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.29.jar:9.0.29]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.29.jar:9.0.29]
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) ~[tomcat-embed-core-9.0.29.jar:9.0.29]
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [tomcat-embed-core-9.0.29.jar:9.0.29]
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:526) [tomcat-embed-core-9.0.29.jar:9.0.29]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) [tomcat-embed-core-9.0.29.jar:9.0.29]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) [tomcat-embed-core-9.0.29.jar:9.0.29]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) [tomcat-embed-core-9.0.29.jar:9.0.29]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) [tomcat-embed-core-9.0.29.jar:9.0.29]
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:367) [tomcat-embed-core-9.0.29.jar:9.0.29]
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) [tomcat-embed-core-9.0.29.jar:9.0.29]
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:860) [tomcat-embed-core-9.0.29.jar:9.0.29]
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1591) [tomcat-embed-core-9.0.29.jar:9.0.29]
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-9.0.29.jar:9.0.29]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [na:1.8.0_191]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [na:1.8.0_191]
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-9.0.29.jar:9.0.29]
at java.lang.Thread.run(Thread.java:748) [na:1.8.0_191]
我可以看到有很多链接解释了带有 400 个错误代码的类似错误，但没有这方面的内容。我想我在调用数据库时犯了一些错误。
因此，在拐了一圈之后，我发现我给数据库端点的是 http://localhost:8001 而不是 http://localhost:8000。我误认为是在 8001 上运行的 dynamodb 管理员的端点。