springboot使用自带连接池连接postgre

Application配置
spring.datasource.url=jdbc:postgresql://***:5432/postgres
spring.datasource.username=postgres
spring.datasource.password=123456
spring.datasource.driver-class-name=org.postgresql.Driver
#最大连接数
spring.datasource.tomcat.max-active=20
#最大空闲数
spring.datasource.tomcat.max-idle=8
#最小空闲数
spring.datasource.tomcat.min-idle=8
#初始化连接数
spring.datasource.tomcat.initial-size=10
 
注入jdbctemplate实现增删改查

@Autowired
JdbcTemplate jdbcTemplate;

List<Path> paths = jdbcTemplate.query(start, new Object[]{projectid, projectid}, new RowMapper<Path>() {
    @Override
    public Path mapRow(ResultSet rs, int rowNum) throws SQLException {
        double slng = rs.getDouble("slng");
        double slat = rs.getDouble("slat");
        double elng = rs.getDouble("elng");
        double elat = rs.getDouble("elat");
        Node snode = new Node();
        snode.setLng(slng);
        snode.setLat(slat);
        Node enode = new Node();
        enode.setLng(elng);
        enode.setLat(elat);
        Path path = new Path();
        path.setStart(snode);
        path.setEnd(enode);
        return path;
    }
});