我有一个连接到 AWS DynamoDB 的应用程序。我正在尝试在此应用程序中使用 Jedis 实现 Redis 连接。
但是,就在我添加此依赖项之后-
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
我得到这个错误 -
***************************
APPLICATION FAILED TO START
***************************
Description:
Field userInfoRepository in org.csulb.md.service.DBService required a bean of type 'org.csulb.md.repo.UserInfoRepository' that could not be found.
The injection point has the following annotations:
- @org.springframework.beans.factory.annotation.Autowired(required=true)
Action:
Consider defining a bean of type 'org.csulb.md.repo.UserInfoRepository' in your configuration.
UserInfoRepository 实现 CrudRepository。
我不确定我错过了什么。简而言之,向此代码添加 spring-boot-starter-data-redis 依赖项会出现此错误。没有这种依赖关系,代码可以正常工作。
下面是我的其余代码。
主应用程序.java
package org.csulb.md;
@SpringBootApplication
public class MainApp {
public static void main(String[] args) {
SpringApplication.run(MainApp.class, args);
}
}
DynamoDBConfig.java
package org.csulb.md.config;
@Configuration
@EnableDynamoDBRepositories(basePackages = "org.csulb.md.repo")
public class DynamoDBConfig {
@Value("${amazon.dynamodb.endpoint}")
private String amazonDynamoDBEndpoint;
@Value("${amazon.aws.accesskey}")
private String amazonAWSAccessKey;
@Value("${amazon.aws.secretkey}")
private String amazonAWSSecretKey;
@Value("${amazon.aws.awsSessionToken}")
private String awsSessionToken;
@Bean
public AmazonDynamoDB amazonDynamoDB() {
AmazonDynamoDB amazonDynamoDB
= new AmazonDynamoDBClient(amazonAWSCredentials());
if (!StringUtils.isEmpty(this.amazonDynamoDBEndpoint)) {
amazonDynamoDB.setEndpoint(this.amazonDynamoDBEndpoint);
}
return amazonDynamoDB;
}
@Bean
public AWSCredentials amazonAWSCredentials() {
AWSCredentials awsCredentials = null;
if(StringUtils.isEmpty(this.awsSessionToken)) {
awsCredentials = new BasicAWSCredentials(this.amazonAWSAccessKey, this.amazonAWSSecretKey);
} else {
awsCredentials = new BasicSessionCredentials(this.amazonAWSAccessKey, this.amazonAWSSecretKey, this.awsSessionToken);
}
return awsCredentials;
}
用户信息存储库.java
package org.csulb.md.repo;
@EnableScan
public interface UserInfoRepository extends CrudRepository<UserInfo, String> {}
GreetingController.java
package org.csulb.md.controller;
@RestController
public class GreetingController {
@Autowired
private DBService dbService;
@GetMapping("/getdata")
public UserInfo greeting(@RequestParam(value = "id") String id) {
UserInfo userInfo = dbService.getUserById(id);
return userInfo;
}
}
用户信息.java
package org.csulb.md.pojo;
@DynamoDBTable(tableName = "UserInfo")
public class UserInfo {
@DynamoDBHashKey
@DynamoDBAutoGeneratedKey
@DynamoDBAttribute(attributeName = "id")
private String id;
@DynamoDBAttribute(attributeName = "name")
private String name;
@DynamoDBAttribute(attributeName = "location")
private String location;
public String getLocation() {
return location;
}
public void setLocation(String location) {
this.location = location;
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
DBService.java
package org.csulb.md.service;
@Component
public class DBService {
Logger logger = LoggerFactory.getLogger(DBService.class);
@Autowired
private UserInfoRepository userInfoRepository;
public UserInfo getUserById(String id){
Optional<UserInfo> userId = userInfoRepository.findById(id);
UserInfo userInfo = new UserInfo();
if(userId.isPresent()) {
logger.info("UserInfo found: "+userId.get().getId());
BeanUtils.copyProperties(userId.get(), userInfo);
} else {
logger.info("UserInfo not found: "+id);
}
return userInfo;
}
}
pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.3.2.RELEASE</version>
<relativePath />
</parent>
<groupId>org.csulb.md</groupId>
<artifactId>dynamodb-connector</artifactId>
<version>0.0.1</version>
<name>dynamodb-connector</name>
<properties>
<java.version>1.8</java.version>
<docker.image.prefix>springio</docker.image.prefix>
<start-class>org.csulb.md.MainApp</start-class>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>com.amazonaws</groupId>
<artifactId>aws-java-sdk-dynamodb</artifactId>
<version>1.11.64</version>
</dependency>
<dependency>
<groupId>com.github.derjust</groupId>
<artifactId>spring-data-dynamodb</artifactId>
<version>5.1.0</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
PS - 将 @ComponentScan("org.csulb.md.repo") 添加到主类可以解决此错误,但它无法识别其他组件,因此控制器无法工作。我尝试添加 @ComponentScan("org.csulb.md) 以及给出与描述相同的错误。我尝试在 UserInfoRepository 上添加 @Repository/@Component 并发现没有运气。