Question

Helo我一直试图用Spring Boot连接到数据库一段时间，我一直收到错误：

java.sql.SQLException：url不能为null

我不确定我做错了什么。我试图获得这样的配置的原因是因为我想使用数据库的编码密码。

这就是我的文件：

DataConfig.java

GET <the URL I tried to access> 403 (Forbidden)

EncryptorConfig.java

@Configuration
public class DataConfig {

    @Autowired
    private Environment env;

    @Configuration
    @Profile(value = "dev")
    public class DevPlaceHolderConfig {

        @Bean
        DataSource dataSource() {

            return DataSourceBuilder
                    .create()
                    .username(env.getProperty("spring.datasource.username"))
                    .password(env.getProperty("spring.datasource.password"))
                    .url(env.getProperty("spring.datasource.url"))
                    .driverClassName(env.getProperty("spring.datasource.driver-class-name"))
                    .build();
        }
    }

    @Configuration
    @Profile(value = "prod")
    public class ProdPlaceHolderConfig {
        @Bean
        DataSource dataSource() {

            return DataSourceBuilder
                    .create()
                    .username(env.getProperty("spring.datasource.username"))
                    .password(env.getProperty("spring.datasource.password"))
                    .url(env.getProperty("spring.datasource.url"))
                    .driverClassName(env.getProperty("spring.datasource.driver-class-name"))
                    .build();
        }
    }
}

application.yml

@Configuration
public class EncryptorConfig {

    @Bean
    public EnvironmentStringPBEConfig environmentVariablesConfiguration() {
        EnvironmentStringPBEConfig config = new EnvironmentStringPBEConfig();
        config.setAlgorithm("PBEWithMD5AndDES");
        config.setPasswordEnvName("APP_ENCRYPTION_PASSWORD");
        return config;
    }

    @Bean
    public PooledPBEStringEncryptor stringEncryptor() {
        PooledPBEStringEncryptor encryptor = new PooledPBEStringEncryptor();
        encryptor.setConfig(environmentVariablesConfiguration());
        return encryptor;
    }
}

这是堆栈跟踪

spring:
  profiles:
    active: prod
  output:
    ansi:
      enabled: always
---
spring:
  profiles: dev
  application:
    name: App-Dev
  datasource:
    url: jdbc:mysql://localhost:3306/database?useSSL=false
    username: root
    password: root
    driver-class-name: com.mysql.jdbc.Driver 
  jpa:
    show-sql: true
    hibernate:
      ddl-auto: update
    properties:
      hibernate:
        dialect: org.hibernate.dialect.MySQL5Dialect
server:
  port: 8080

---

spring:
  profiles: prod
  application:
    name: App-Prod
  datasource:
    url: jdbc:mysql://localhost:3306/database?useSSL=false
    username: root
    password: ENC(/98CfxmsjKBW5oZsLkLlmw==)
    driver-class-name: com.mysql.jdbc.Driver 
  jpa:
    show-sql: true
    hibernate:
      ddl-auto: none
    properties:
      hibernate:
        dialect: org.hibernate.dialect.MySQL5Dialect
server:
  port: 3000

Answer 1

好的，这花了我一段时间，但这就是我解决问题的方法;结果证明是少数。

确保在配置中包含属性占位符，以便实际属性值可以绑定到。请务必在此处阅读enter link description here

现在我的 application.yml 文件如下所示， APP_ENCRYPTION_PASSWORD 是一个包含加密密码的环境变量。

spring:
  profiles:
    active: prod
  output:
    ansi:
      enabled: detect
---
spring:
  profiles: dev
  application:
    name: App-Dev
  datasource:
    url: jdbc:mysql://localhost:3306/database?useSSL=false
    username: root
    password: root
    driver-class-name: com.mysql.jdbc.Driver 
  jpa:
    show-sql: true
    hibernate:
      ddl-auto: update
    properties:
      hibernate:
        dialect: org.hibernate.dialect.MySQL5Dialect
server:
  port: 8080

---

spring:
  profiles: prod
  application:
    name: App-Prod
  datasource:
    url: jdbc:mysql://localhost:3306/database?useSSL=false
    username: root
    password: ENC(/98CfxmsjKBW5oZsLkLlmw==)
    driver-class-name: com.mysql.jdbc.Driver 
  jpa:
    show-sql: true
    hibernate:
      ddl-auto: none
    properties:
      hibernate:
        dialect: org.hibernate.dialect.MySQL5Dialect
jasypt:
  encryptor:
    algorithm: PBEWithMD5AndDES
    password: ${APP_ENCRYPTION_PASSWORD}
server:
  port: 3000

只需要一个数据源配置bean。我已将其设置为更改活动配置文件，以便选择正确的配置。

还创建私有变量并使用@Value（）注释绑定它们。还要将@EnableEncryptableProperties添加到类中。

<强> DataConfig.java

@Configuration
@EnableEncryptableProperties
public class DataConfig {

    @Value("${spring.datasource.username}")
    private String userName;

    @Value("${spring.datasource.password}")
    private String password;

    @Value("${spring.datasource.url}")
    private String url;

    @Value("${spring.datasource.driver-class-name}")
    private String driverClassName;


    @Bean
    DataSource dataSource() {
        return DataSourceBuilder
                .create()
                .username(userName)
                .password(password)
                .url(url)
                .driverClassName(driverClassName)
                .build();
    }
}

就是它解决了我所有的问题。

连接数据库Spring引导时出错

1 个答案: