Spring Boot: How to externalize JDBC datasource configuration?

Question

I have following Spring Boot controller code that works. (Some sensitive text was replaced)

package com.sample.server;

import java.sql.ResultSet;
import jav         


        

Answer 1

Change your controller to the following

@RestController
public class DetailReportController {

    @Autowired
    private JdbcTemplate jt;

    @RequestMapping(value="/report/detail", method=RequestMethod.GET)
    public List detailReport() {
        List results = jt.query(
            "select NID, SCode, SName from UFGroup",
            new RowMapper(){
                @Override
                public UFGroup mapRow(ResultSet rs, int rowNum) throws SQLException {
                    return new UFGroup(rs.getInt("NID"), rs.getString("SCode"), rs.getString("SName"));
                }
            });
        return results;
    }

    private static class UFGroup
    {
        public int nid;
        public String scode;
        public String sname;

        public UFGroup(int nid, String scode, String sname)
        {
            this.nid = nid;
            this.scode = scode;
            this.sname = sname;
        }
    }
}

In src/main/resources add an application.properties with the following

spring.datasource.driverClassName=net.sourceforge.jtds.jdbc.Driver
spring.datasource.url=jdbc:jtds:sqlserver://111.11.11.11/DataBaseName
spring.datasource.username=sa
spring.datasource.password=password

And simply start your application. No xml needed. Spring boot will create the DataSource and will add a default JdbcTemplate instance.

Tip: Remove the dependency for org.apache.commons.dbcp spring-boot will give you the newer (and IMHO better) tomcat connection pool (which despite the name can be used entirely on its own).