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- import java.sql.*;
- import javax.json.*;
- public class Tietokanta {
- protected Connection yhteys = null;
- protected Statement kysely = null;
- protected ResultSet tulosjoukko = null;
- public boolean avaaYhteys() {
- boolean ok = true;
- try {
- Class.forName("com.mysql.cj.jdbc.Driver");
- yhteys = DriverManager.getConnection("jdbc:mysql://localhost/savukelaskuri?serverTimezone=UTC", "root", "");
- } catch (Exception e) {
- e.printStackTrace();
- ok = false;
- }
- return ok;
- }
- public boolean suljeYhteys() {
- boolean ok = true;
- try {
- this.yhteys.close();
- } catch (Exception e) {
- ok = false;
- }
- return ok;
- }
- }
- import java.math.BigDecimal;
- import javax.json.Json;
- import javax.json.JsonArray;
- import javax.ws.rs.core.Context;
- import javax.ws.rs.core.UriInfo;
- import javax.ws.rs.Produces;
- import javax.ws.rs.Consumes;
- import javax.ws.rs.GET;
- import javax.ws.rs.Path;
- import javax.ws.rs.PUT;
- import static javax.ws.rs.client.Entity.json;
- import javax.ws.rs.core.MediaType;
- import org.json.JSONArray;
- import org.json.JSONObject;
- @Path("savukkeet")
- public class ApiResource extends Tietokanta {
- JSONObject jsonolio = new JSONObject();
- JSONArray jsontaulu = new JSONArray();
- @Context
- private UriInfo context;
- public ApiResource() {
- this.avaaYhteys();
- }
- @GET
- @Produces(MediaType.APPLICATION_JSON)
- public String getJson() {
- try {
- kysely = yhteys.createStatement();
- String sql = "SELECT * FROM kulutus";
- tulosjoukko = kysely.executeQuery(sql);
- while (tulosjoukko.next()) {
- System.out.println(tulosjoukko.getString("pvm"));
- jsonolio.put("id", tulosjoukko.getInt("id"));
- jsonolio.put("pvm", tulosjoukko.getString("pvm"));
- jsonolio.put("kulutus", tulosjoukko.getInt("kulutus"));
- jsontaulu.put(jsonolio);
- }
- } catch (Exception e) {
- e.printStackTrace();
- }
- return jsontaulu.toString(4);
- }
- }
- [
- {
- "kulutus": 9,
- "pvm": "2019-01-14 16:46:00",
- "id": 1
- },
- {
- "kulutus": 8,
- "pvm": "2019-01-15 21:18:00",
- "id": 2
- }
- ]
- [
- {
- "kulutus": 8,
- "pvm": "2019-01-15 21:18:00",
- "id": 2
- },
- {
- "kulutus": 8,
- "pvm": "2019-01-15 21:18:00",
- "id": 2
- }
- ]
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