UnsatisfiedDependencyException , BeanCreationException..in Spring
UnsatisfiedDependencyException , BeanCreationException..in Spring
我在 Spring 处于初学者水平，试图通过构建一个基本应用程序来学习 spring，其中数据将存储在 dynamo DB 中，我正在使用 Java dynamo DB 的 SDK，我在此处包含所有文件和错误
主要应用程序
package main.java.com.ankur.practice.spring;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ComponentScan;
@SpringBootApplication
@ComponentScan(basePackages = {"main.java.com.ankur.practice.spring"})
public class SpringPracticeApplication {
public static void main(String []args){
SpringApplication.run(SpringPracticeApplication.class);
}
}
控制器class
package main.java.com.ankur.practice.spring.controllers;
import main.java.com.ankur.practice.spring.dto.IssueDTO;
import main.java.com.ankur.practice.spring.module.IssueAssignment;
import main.java.com.ankur.practice.spring.repository.IssueRepository;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;
@RestController
@RequestMapping("/Issue")
public class gdaycontroller {
@Autowired
private IssueRepository repository;
@GetMapping("/gday")
public String gdayf(){
return "G’day World";
}
@PostMapping
public void CreateIssue(@RequestBody IssueAssignment issue) {
repository.insert(issue);
}
@GetMapping
public ResponseEntity<IssueAssignment> getOneIssueDetailsOf(@RequestParam String IssueId, @RequestParam String IssueName) {
IssueAssignment issue=repository.getOneIssue(IssueId,IssueName);
return new ResponseEntity<IssueAssignment>(issue,HttpStatus.OK);
}
@PutMapping
public void updateIssueAssigne(@RequestBody String IssueId,@RequestBody String AssigneName,@RequestBody String IssueName) {
repository.updateIssueAssigne(IssueId,AssigneName,IssueName);
}
}
存储库Class
package main.java.com.ankur.practice.spring.repository;
import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBMapper;
import main.java.com.ankur.practice.spring.module.IssueAssignment;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
@Component
public class IssueRepository {
@Autowired
private DynamoDBMapper mapper;
public void insert(IssueAssignment issue) {
mapper.save(issue);
}
public IssueAssignment getOneIssue(String IssueId,String IssueName) {
return mapper.load(IssueAssignment.class,IssueId,IssueName);
}
public void updateIssueAssigne(String IssueID,String AssigneName,String IssueName) {
IssueAssignment issue = getOneIssue(IssueID, IssueName);
issue.setAssigneName(AssigneName);
mapper.save(issue);
}
}
型号 Class for Dynamo DB
package main.java.com.ankur.practice.spring.module;
import com.amazonaws.services.dynamodbv2.datamodeling.*;
import java.io.Serializable;
@DynamoDBTable(tableName = "IssueAssignment")
public class IssueAssignment implements Serializable {
private static final long serialVersionUID = 1L;
private String IssueId;
private String IssueName;
private Boolean AssigneStatus;
private String AssigneName;
@DynamoDBHashKey(attributeName = "IssueId")
@DynamoDBAutoGeneratedKey
public String getIssueId() {
return IssueId;
}
public void setIssueId(String IssueId) {
this.IssueId=IssueId;
}
@DynamoDBAttribute
public String getIssueName() {
return IssueName;
}
public void setIssueName(String issueName) {
this.IssueName = issueName;
}
@DynamoDBRangeKey
public String getAssigneName() {
return AssigneName;
}
public void setAssigneName(String assigneName) {
AssigneName = assigneName;
}
@DynamoDBAttribute
public Boolean getAssigneStatus() {
return AssigneStatus;
}
public void setAssigneStatus(Boolean assigneStatus) {
this.AssigneStatus=assigneStatus;
}
}
DynamoDbConfig class 用于设置 Dynamo DB
package main.java.com.ankur.practice.spring.dynamodbconfig;
import com.amazonaws.AmazonClientException;
import com.amazonaws.auth.AWSStaticCredentialsProvider;
import com.amazonaws.auth.BasicAWSCredentials;
import com.amazonaws.services.dynamodbv2.AmazonDynamoDB;
import com.amazonaws.services.dynamodbv2.AmazonDynamoDBClientBuilder;
import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBMapper;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
@Configuration
public class dynamoDbconfig {
@Value("${amazon.access.key}")
private String awsAccessKey;
@Value("${amazon.access.secret-key}")
private String awsSecretKey;
@Value("${amazon.region}")
private String awsRegion;
@Value("${amazon.end-point.url}")
private String awsDynamoDBEndPoint;
@Bean
public DynamoDBMapper mapper(){
return new DynamoDBMapper(amazonDynamoDBConfig());
}
public AmazonDynamoDB amazonDynamoDBConfig(){
return AmazonDynamoDBClientBuilder.standard()
.withCredentials(new AWSStaticCredentialsProvider(new BasicAWSCredentials(awsAccessKey,awsSecretKey)))
.build();
}
}
Application.yml
amazon:
access:
key:AKIAQQABW4A
secret-key:AKIABWCF6E24A
region:
end-point:
url: dynamodb.us-east-1.amazonaws.com
server:
port:9001
我尝试使用组件 Scan ，我注意将 class 包含在同一个基础包中，但仍然没有出现以下错误
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'gdaycontroller': Unsatisfied dependency expressed through field 'repository'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'issueRepository': Unsatisfied dependency expressed through field 'mapper'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dynamoDbconfig': Injection of autowired dependencies failed; nested exception is java.lang.IllegalArgumentException: Could not resolve placeholder 'amazon.access.key' in value "${amazon.access.key}"
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.resolveFieldValue(AutowiredAnnotationBeanPostProcessor.java:660) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:119) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1413) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:601) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:524) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean[=17=](AbstractBeanFactory.java:335) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:944) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:918) ~[spring-context-5.3.7.jar:5.3.7]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:583) ~[spring-context-5.3.7.jar:5.3.7]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:145) ~[spring-boot-2.5.0.jar:2.5.0]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:758) ~[spring-boot-2.5.0.jar:2.5.0]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:438) ~[spring-boot-2.5.0.jar:2.5.0]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:337) ~[spring-boot-2.5.0.jar:2.5.0]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1336) ~[spring-boot-2.5.0.jar:2.5.0]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1325) ~[spring-boot-2.5.0.jar:2.5.0]
at main.java.com.ankur.practice.spring.SpringPracticeApplication.main(SpringPracticeApplication.java:13) ~[classes/:na]
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'issueRepository': Unsatisfied dependency expressed through field 'mapper'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dynamoDbconfig': Injection of autowired dependencies failed; nested exception is java.lang.IllegalArgumentException: Could not resolve placeholder 'amazon.access.key' in value "${amazon.access.key}"
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.resolveFieldValue(AutowiredAnnotationBeanPostProcessor.java:660) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:119) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1413) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:601) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:524) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean[=17=](AbstractBeanFactory.java:335) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1380) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1300) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.resolveFieldValue(AutowiredAnnotationBeanPostProcessor.java:657) ~[spring-beans-5.3.7.jar:5.3.7]
... 20 common frames omitted
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dynamoDbconfig': Injection of autowired dependencies failed; nested exception is java.lang.IllegalArgumentException: Could not resolve placeholder 'amazon.access.key' in value "${amazon.access.key}"
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:405) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1413) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:601) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:524) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean[=17=](AbstractBeanFactory.java:335) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:410) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1334) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1177) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:564) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:524) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean[=17=](AbstractBeanFactory.java:335) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1380) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1300) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.resolveFieldValue(AutowiredAnnotationBeanPostProcessor.java:657) ~[spring-beans-5.3.7.jar:5.3.7]
... 34 common frames omitted
Caused by: java.lang.IllegalArgumentException: Could not resolve placeholder 'amazon.access.key' in value "${amazon.access.key}"
at org.springframework.util.PropertyPlaceholderHelper.parseStringValue(PropertyPlaceholderHelper.java:180) ~[spring-core-5.3.7.jar:5.3.7]
at org.springframework.util.PropertyPlaceholderHelper.replacePlaceholders(PropertyPlaceholderHelper.java:126) ~[spring-core-5.3.7.jar:5.3.7]
at org.springframework.core.env.AbstractPropertyResolver.doResolvePlaceholders(AbstractPropertyResolver.java:239) ~[spring-core-5.3.7.jar:5.3.7]
at org.springframework.core.env.AbstractPropertyResolver.resolveRequiredPlaceholders(AbstractPropertyResolver.java:210) ~[spring-core-5.3.7.jar:5.3.7]
at org.springframework.context.support.PropertySourcesPlaceholderConfigurer.lambda$processProperties[=17=](PropertySourcesPlaceholderConfigurer.java:175) ~[spring-context-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.AbstractBeanFactory.resolveEmbeddedValue(AbstractBeanFactory.java:936) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1321) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1300) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.resolveFieldValue(AutowiredAnnotationBeanPostProcessor.java:657) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:119) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) ~[spring-beans-5.3.7.jar:5.3.7]
... 54 common frames omitted
问题在这里：
java.lang.IllegalArgumentException: Could not resolve placeholder
'amazon.access.key' in value "${amazon.access.key}"
检查配置中是否存在 amazon.access.key。
在你的 application.yml 中 colon (:) 之后应该有一个 space。
确保您的 yml 格式正确.
示例：key: AKIAQQABW4A
amazon:
access:
key: AKIAQQABW4A
secret-key: AKIABWCF6E24A
region:
end-point:
url: dynamodb.us-east-1.amazonaws.com
server:
port: 9001
我在 Spring 处于初学者水平，试图通过构建一个基本应用程序来学习 spring，其中数据将存储在 dynamo DB 中，我正在使用 Java dynamo DB 的 SDK，我在此处包含所有文件和错误
主要应用程序
package main.java.com.ankur.practice.spring;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ComponentScan;
@SpringBootApplication
@ComponentScan(basePackages = {"main.java.com.ankur.practice.spring"})
public class SpringPracticeApplication {
public static void main(String []args){
SpringApplication.run(SpringPracticeApplication.class);
}
}
控制器class
package main.java.com.ankur.practice.spring.controllers;
import main.java.com.ankur.practice.spring.dto.IssueDTO;
import main.java.com.ankur.practice.spring.module.IssueAssignment;
import main.java.com.ankur.practice.spring.repository.IssueRepository;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;
@RestController
@RequestMapping("/Issue")
public class gdaycontroller {
@Autowired
private IssueRepository repository;
@GetMapping("/gday")
public String gdayf(){
return "G’day World";
}
@PostMapping
public void CreateIssue(@RequestBody IssueAssignment issue) {
repository.insert(issue);
}
@GetMapping
public ResponseEntity<IssueAssignment> getOneIssueDetailsOf(@RequestParam String IssueId, @RequestParam String IssueName) {
IssueAssignment issue=repository.getOneIssue(IssueId,IssueName);
return new ResponseEntity<IssueAssignment>(issue,HttpStatus.OK);
}
@PutMapping
public void updateIssueAssigne(@RequestBody String IssueId,@RequestBody String AssigneName,@RequestBody String IssueName) {
repository.updateIssueAssigne(IssueId,AssigneName,IssueName);
}
}
存储库Class
package main.java.com.ankur.practice.spring.repository;
import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBMapper;
import main.java.com.ankur.practice.spring.module.IssueAssignment;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
@Component
public class IssueRepository {
@Autowired
private DynamoDBMapper mapper;
public void insert(IssueAssignment issue) {
mapper.save(issue);
}
public IssueAssignment getOneIssue(String IssueId,String IssueName) {
return mapper.load(IssueAssignment.class,IssueId,IssueName);
}
public void updateIssueAssigne(String IssueID,String AssigneName,String IssueName) {
IssueAssignment issue = getOneIssue(IssueID, IssueName);
issue.setAssigneName(AssigneName);
mapper.save(issue);
}
}
型号 Class for Dynamo DB
package main.java.com.ankur.practice.spring.module;
import com.amazonaws.services.dynamodbv2.datamodeling.*;
import java.io.Serializable;
@DynamoDBTable(tableName = "IssueAssignment")
public class IssueAssignment implements Serializable {
private static final long serialVersionUID = 1L;
private String IssueId;
private String IssueName;
private Boolean AssigneStatus;
private String AssigneName;
@DynamoDBHashKey(attributeName = "IssueId")
@DynamoDBAutoGeneratedKey
public String getIssueId() {
return IssueId;
}
public void setIssueId(String IssueId) {
this.IssueId=IssueId;
}
@DynamoDBAttribute
public String getIssueName() {
return IssueName;
}
public void setIssueName(String issueName) {
this.IssueName = issueName;
}
@DynamoDBRangeKey
public String getAssigneName() {
return AssigneName;
}
public void setAssigneName(String assigneName) {
AssigneName = assigneName;
}
@DynamoDBAttribute
public Boolean getAssigneStatus() {
return AssigneStatus;
}
public void setAssigneStatus(Boolean assigneStatus) {
this.AssigneStatus=assigneStatus;
}
}
DynamoDbConfig class 用于设置 Dynamo DB
package main.java.com.ankur.practice.spring.dynamodbconfig;
import com.amazonaws.AmazonClientException;
import com.amazonaws.auth.AWSStaticCredentialsProvider;
import com.amazonaws.auth.BasicAWSCredentials;
import com.amazonaws.services.dynamodbv2.AmazonDynamoDB;
import com.amazonaws.services.dynamodbv2.AmazonDynamoDBClientBuilder;
import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBMapper;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
@Configuration
public class dynamoDbconfig {
@Value("${amazon.access.key}")
private String awsAccessKey;
@Value("${amazon.access.secret-key}")
private String awsSecretKey;
@Value("${amazon.region}")
private String awsRegion;
@Value("${amazon.end-point.url}")
private String awsDynamoDBEndPoint;
@Bean
public DynamoDBMapper mapper(){
return new DynamoDBMapper(amazonDynamoDBConfig());
}
public AmazonDynamoDB amazonDynamoDBConfig(){
return AmazonDynamoDBClientBuilder.standard()
.withCredentials(new AWSStaticCredentialsProvider(new BasicAWSCredentials(awsAccessKey,awsSecretKey)))
.build();
}
}
Application.yml
amazon:
access:
key:AKIAQQABW4A
secret-key:AKIABWCF6E24A
region:
end-point:
url: dynamodb.us-east-1.amazonaws.com
server:
port:9001
我尝试使用组件 Scan ，我注意将 class 包含在同一个基础包中，但仍然没有出现以下错误
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'gdaycontroller': Unsatisfied dependency expressed through field 'repository'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'issueRepository': Unsatisfied dependency expressed through field 'mapper'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dynamoDbconfig': Injection of autowired dependencies failed; nested exception is java.lang.IllegalArgumentException: Could not resolve placeholder 'amazon.access.key' in value "${amazon.access.key}"
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.resolveFieldValue(AutowiredAnnotationBeanPostProcessor.java:660) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:119) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1413) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:601) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:524) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean[=17=](AbstractBeanFactory.java:335) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:944) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:918) ~[spring-context-5.3.7.jar:5.3.7]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:583) ~[spring-context-5.3.7.jar:5.3.7]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:145) ~[spring-boot-2.5.0.jar:2.5.0]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:758) ~[spring-boot-2.5.0.jar:2.5.0]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:438) ~[spring-boot-2.5.0.jar:2.5.0]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:337) ~[spring-boot-2.5.0.jar:2.5.0]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1336) ~[spring-boot-2.5.0.jar:2.5.0]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1325) ~[spring-boot-2.5.0.jar:2.5.0]
at main.java.com.ankur.practice.spring.SpringPracticeApplication.main(SpringPracticeApplication.java:13) ~[classes/:na]
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'issueRepository': Unsatisfied dependency expressed through field 'mapper'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dynamoDbconfig': Injection of autowired dependencies failed; nested exception is java.lang.IllegalArgumentException: Could not resolve placeholder 'amazon.access.key' in value "${amazon.access.key}"
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.resolveFieldValue(AutowiredAnnotationBeanPostProcessor.java:660) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:119) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1413) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:601) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:524) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean[=17=](AbstractBeanFactory.java:335) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1380) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1300) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.resolveFieldValue(AutowiredAnnotationBeanPostProcessor.java:657) ~[spring-beans-5.3.7.jar:5.3.7]
... 20 common frames omitted
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dynamoDbconfig': Injection of autowired dependencies failed; nested exception is java.lang.IllegalArgumentException: Could not resolve placeholder 'amazon.access.key' in value "${amazon.access.key}"
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:405) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1413) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:601) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:524) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean[=17=](AbstractBeanFactory.java:335) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:410) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1334) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1177) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:564) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:524) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean[=17=](AbstractBeanFactory.java:335) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1380) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1300) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.resolveFieldValue(AutowiredAnnotationBeanPostProcessor.java:657) ~[spring-beans-5.3.7.jar:5.3.7]
... 34 common frames omitted
Caused by: java.lang.IllegalArgumentException: Could not resolve placeholder 'amazon.access.key' in value "${amazon.access.key}"
at org.springframework.util.PropertyPlaceholderHelper.parseStringValue(PropertyPlaceholderHelper.java:180) ~[spring-core-5.3.7.jar:5.3.7]
at org.springframework.util.PropertyPlaceholderHelper.replacePlaceholders(PropertyPlaceholderHelper.java:126) ~[spring-core-5.3.7.jar:5.3.7]
at org.springframework.core.env.AbstractPropertyResolver.doResolvePlaceholders(AbstractPropertyResolver.java:239) ~[spring-core-5.3.7.jar:5.3.7]
at org.springframework.core.env.AbstractPropertyResolver.resolveRequiredPlaceholders(AbstractPropertyResolver.java:210) ~[spring-core-5.3.7.jar:5.3.7]
at org.springframework.context.support.PropertySourcesPlaceholderConfigurer.lambda$processProperties[=17=](PropertySourcesPlaceholderConfigurer.java:175) ~[spring-context-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.AbstractBeanFactory.resolveEmbeddedValue(AbstractBeanFactory.java:936) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1321) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1300) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.resolveFieldValue(AutowiredAnnotationBeanPostProcessor.java:657) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:119) ~[spring-beans-5.3.7.jar:5.3.7]
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) ~[spring-beans-5.3.7.jar:5.3.7]
... 54 common frames omitted
问题在这里：
java.lang.IllegalArgumentException: Could not resolve placeholder 'amazon.access.key' in value "${amazon.access.key}"
检查配置中是否存在 amazon.access.key。
在你的 application.yml 中 colon (:) 之后应该有一个 space。
确保您的 yml 格式正确.
示例：key: AKIAQQABW4A
amazon:
access:
key: AKIAQQABW4A
secret-key: AKIABWCF6E24A
region:
end-point:
url: dynamodb.us-east-1.amazonaws.com
server:
port: 9001