IDEA连接postgressql数据库操作

# METHOD can be "trust", "reject", "md5", "password", "gss", "sspi",
# "ident", "peer", "pam", "ldap", "radius" or "cert". Note that
# "password" sends passwords in clear text; "md5" is preferred since
# it sends encrypted passwords.

spring:
 datasource:
  url: jdbc:postgresql://172.30.105.178:5432/mysql?useSSL=false
  username: postgres
  password: 0000
  driverClassName: org.postgresql.Driver

package com.qingsong.jdbc_test;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

import javax.sql.DataSource;
import java.sql.Connection;
import java.sql.SQLException;

@RunWith(SpringRunner.class)
@SpringBootTest
public class JdbcTestApplicationTests {

  @Autowired
  DataSource dataSource;
  @Test
  public void contextLoads() throws SQLException {
    System.out.println("连接成功");
    System.out.println("dataSource.getClass()内容***"+dataSource.getClass());

    Connection connection = dataSource.getConnection();
    System.out.println("connection内容***"+connection);
    connection.close();
  }
}

package com.qingsong.mybatis_mysql.control;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import java.util.List;
import java.util.Map;

/**
 * @Auther: 青松
 * @Date: 2019/3/5 20:19
 */
@Controller
public class controller {
  /**
   * @Autowired 注释，它可以对类成员变量、方法及构造函数进行标注，完成自动装配的工作。 通过 @Autowired的使用来消除 set ，get方法。
   * 在使用@Autowired之前，我们对一个bean配置起属性时，是这用的
   */
  @Autowired
  JdbcTemplate jdbcTemplate;

  @ResponseBody
  @GetMapping("/hi")
  public Map<String,Object> map(){
    List<Map<String,Object>> list=jdbcTemplate.queryForList("select * from author");
    return list.get(0);
  }
}

create table Author
(
  code varchar(20) primary key,
  name varchar(20) not null
);

# schema.sql中一般存放的是DDL脚本

spring.datasource.schema=classpath:Author.sql
spring.datasource.initialization-mode=always