Question

我正在尝试使用注释配置在Spring Boot中配置Postgres数据库。我将所有数据库凭据存储在名为database.properties的文件中，并将配置文件称为DBconfig.java

database.url= jdbc:postgresql://localhost/mydb 
database.driverClassName= com.postgresql.jdbc.Driver
database.username= postgres
database.password= password

dbConfig文件-

@Configuration
@PropertySource("classpath:databaseAccess/database.properties")

public class DBconfig {

  @Value("${username}")
  private String username;

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

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

  @Bean
  @Qualifier("postgresDB")
  public DataSource dataSource() {
    DataSourceBuilder dataSource = DataSourceBuilder.create();
    dataSource.url(url);
    dataSource.password(password);
    //dataSource.driverClassName(driverClassName);
    dataSource.username(username);
    return dataSource.build();
  }

  @Bean
  @Qualifier("jdbcTemplate")
  public JdbcTemplate jdbcTemplate() {
      return new JdbcTemplate(dataSource());
  }
}

这是我的主文件

     @SpringBootApplication
     public class GetNotificationsApplication {

        public static void main(String[] args) {

           ApplicationContext ctx = new AnnotationConfigApplicationContext(DBconfig.class);
           JdbcTemplate template= ctx.getBean("jdbcTemplate", JdbcTemplate.class);
           template.execute("CREATE TABLE TEST( test VARCHAR(20))");

        }

     }

我不断收到错误消息工厂方法'dataSource'抛出异常；嵌套异常是java.lang.IllegalArgumentException：URL必须以'jdbc'开头

Answer 1

尝试通过定义postgres的端口号来更改url参数的值。假设postgres在5432上运行，这是默认端口。

更改

Uncaught (in promise): Error: Cannot find module '../webcomponents/item.js'

收件人

Warnings while compiling
...
Critical dependency: the request of a dependency is an expression

有关端口号，请检查Find the host name and port using PSQL commands

更新：

还可以通过将前缀import { Component } from '@angular/core'; import('../webcomponents/item.js').then(mm => {}); // works const path = '../webcomponents/item.js'; import(path).then(mm => {}); // doesn't @Component({ selector: 'app-root', template: ``, styles: [], }) export class AppComponent {}更改为jdbc:postgresql://localhost/mydb和jdbc:postgresql://localhost:5432/mydb。

Spring Boot给出了URL错误，必须以'jdbc'开头

1 个答案: