我有一个spring boot tomcat-jdbc配置:
DataSource ds = new DataSource();
ds.setDriverClassName("oracle.jdbc.OracleDriver");
ds.setUrl("jdbc:oracle:thin:@10.101.7.16:1521:SIAMA");
ds.setUsername("xxx");
ds.setPassword("ccc");
ds.setInitialSize(10);
ds.setMaxActive(15);
ds.setMaxIdle(10);
ds.setMinIdle(5);
当我启动tomcat时,我在数据库会话中看到10个初始非活动会话。 问题是当用户启动应用程序时始终在数据库中使用相同的连接。其他9人从不使用。
这是我的代码:
package com.csi_ti.itaca.custom.general.server.service;
import org.apache.tomcat.jdbc.pool.DataSource;
public class GeneralBusinessServiceImpl implements GeneralBusinessService {
public Connection conn;
ConversionUtil convert = new ConversionUtil();
@Autowired
@Qualifier("plsqlDataSource")
private DataSource plsqlDataSource;
@PostConstruct
public void init() throws SQLException {
System.out.println(">>>>> GeneralBusinessService Con 1");
conn = plsqlDataSource.getConnection();
}
public Connection obtenerConexion() {
System.out.println("Obtener conexion......................");
try {
if ( conn.isClosed()) {
System.out.println(">>>>>>>>>>> Conexión cerrada");
return conn = plsqlDataSource.getConnection();
}
else {
System.out.println(">>>>>>>>>>> Conexión ABIERTA");
conn.close();
conn = null;
System.out.println(">>>>>>>>>>> La cerramos");
conn = plsqlDataSource.getConnection();
System.out.println(">>>>>>>>>>> La volvemos a abrir " + conn.toString());
return conn;
}
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return conn;
}
public void ejecutarConsulta() {
//System.out.println("Entramos a ejecutar consulta <<<<<<<<<<<<<<<<<<<*<*<*<*<*<*<*<*<*<*>*>*<*<" );
//System.out.println("Antes de Pob ****: " + conn);
System.out.println(">>>>> GeneralBusinessService Con 2");
PAC_SHWEB_PROVEEDORES llamada = new PAC_SHWEB_PROVEEDORES(conn);
try {
llamada.ejecutaPAC_SHWEB_PROVEEDORES__F_LISTA_TELEFONOS_EXPEDIENTE(new BigDecimal("906000060"));
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
//System.out.println("Pob ****: " + llamada.toString());
}
private Generico0DTO getDTO(Object obj){
System.out.println(">>>>> GeneralBusinessService Con 3");
Generico0DTO dto = new Generico0DTO();
List<Generico0.MapObject> listMapObjects= new ArrayList<Generico0.MapObject>();
if (obj!=null){
if (obj instanceof List<?>){
for (Map m :(List<Map>)obj){
Generico0.MapObject mapObject = new Generico0.MapObject();
mapObject.setMap(m);
listMapObjects.add(mapObject);
}
}else if (obj instanceof Map){
Generico0.MapObject mapObject = new Generico0.MapObject();
mapObject.setMap((Map)obj);
listMapObjects.add(mapObject);
}else if (obj instanceof BigDecimal){
Generico0.MapObject mapObject = new Generico0.MapObject();
Map map = new HashMap<String,BigDecimal>();
map.put("RETURN",obj);
mapObject.setMap(map);
listMapObjects.add(mapObject);
}
}
dto.setMapObject(listMapObjects);
return dto;
}
@Override
public Generico0 ejecutaPAC(String pac, String function, boolean tratarMensajes, Object... parameters) {
System.out.println(">>>>> GeneralBusinessService Con 4");
Map map;
try {
Class<?> clazz = Class.forName("com.csi_ti.itaca.custom.general.server.jdbc." + pac);
Constructor<?> constructor = clazz.getConstructor(Connection.class);
Object pacInstance = constructor.newInstance(conn);
String methodName = "ejecuta"+pac+"__"+function;
////System.out.println("LLamada pac: "+methodName);
Class<?>[] parameterTypes = new Class<?>[parameters.length];
Object[] parameterInput = new Object [parameters.length];
for (int i = 0; i < parameters.length; i++) {
if (parameters[i].getClass().equals(Integer.class)) {
parameterTypes[i] = BigDecimal.class;
parameterInput[i] = new BigDecimal((Integer) parameters[i]);
} else {
parameterTypes[i] = parameters[i].getClass();
parameterInput[i] = parameters[i];
}
}
Method method = clazz.getDeclaredMethod(methodName, parameterTypes);
map = (Map) method.invoke(pacInstance, parameterInput);
if(tratarMensajes){
Object obj = Util.tratarRETURNyMENSAJES(map);
return getDTO(obj);
} else {
return getDTO(map);
}
} catch (Exception e) {
//System.out.println("Error_Service:"+e);
return null;
}
}
}
我需要池来平衡每个请求的会话。 有帮助吗?
谢谢。
答案 0 :(得分:2)
您的@PostConstruct
方法是错误的。您可以在需要使用数据源时从数据源获取连接,而不是在post构造中初始化Connection conn
变量。
try(Connection con = plsqlDataSource.getConnection()) {
// Do something with con
}
它比你所写的要简单得多!
您的obtenerConexion()
也是不必要的。您正在使用连接池,但您没有写一个连接池。
您也不应该直接使用org.apache.tomcat.jdbc.pool.DataSource
,而是javax.sql.DataSource
。