org.apache.tomcat.jdbc.pool.DataSource missing

Question

我需要你的幫助，我的代碼。我有這個代碼PoolConnector類：

package db; 

import java.sql.Connection; 
import java.sql.DriverManager; 
import java.sql.SQLException; 
import java.util.logging.Level; 
import java.util.logging.Logger; 
import javax.naming.Context; 
import javax.naming.InitialContext; 
import javax.naming.NamingException; 
import org.apache.tomcat.jdbc.pool.DataSource; 
import org.apache.tomcat.jdbc.pool.PoolProperties; 

public class PoolConnector 

{ 

private static final String user = "root"; 
private static final String password = ""; 
private static final String dbUrl = "jdbc:mysql://localhost/gene_ontology"; 
private static DataSource ds; 

static { 
    try { 
     Context context = new InitialContext(); 
     Context envctx = (Context) context.lookup("java:comp/env"); 
     ds = (DataSource) envctx.lookup("jdbc/TestDB"); 
    } 
    catch (NamingException ex) { 
     Logger.getLogger(PoolConnector.class.getName()).log(Level.SEVERE, null, ex); 
     PoolProperties p = new PoolProperties(); 
     p.setUrl("jdbc:mysql://localhost/gene_ontology?autoReconnect=true"); 
     p.setDriverClassName("com.mysql.jdbc.Driver"); 
     p.setUsername("root"); 
     p.setPassword(""); 
     p.setJmxEnabled(true); 
     p.setTestWhileIdle(false); 
     p.setTestOnBorrow(true); 
     p.setValidationQuery("SELECT 1"); 
     p.setTestOnReturn(false); 
     p.setValidationInterval(30000); 
     p.setTimeBetweenEvictionRunsMillis(30000); 
     p.setMaxActive(100); 
     p.setInitialSize(10); 
     p.setMaxWait(10000); 
     p.setRemoveAbandonedTimeout(60); 
     p.setMinEvictableIdleTimeMillis(30000); 
     p.setMinIdle(10); 
     p.setLogAbandoned(true); 
     p.setRemoveAbandoned(true); 
     p.setJdbcInterceptors("org.apache.tomcat.jdbc.pool.interceptor.ConnectionState;org.apache.tomcat.jdbc.pool.interceptor.StatementFinalizer"); 
     ds = new DataSource(); 
     ds.setPoolProperties(p); 
    } 
} 

public static Connection getConnection() 
{ 
    Connection conn = null; 
    try 
    {  
     conn = 
       DriverManager.getConnection(dbUrl, user, password); 
    } 

    catch (SQLException e) 
    { 
     e.printStackTrace(); 
    } 
    finally 
    { 
     return conn; 
    } 
} 

public static Connection getConnection(boolean pool) 
{ 
    if (pool) 
    { 
     Connection conn = null; 
     try 
     { 

      conn = ds.getConnection(); 
      return conn; 
     } 
     catch (SQLException e) 
     { 
      e.printStackTrace(); 
      return null; 
     } 
    } 
    else return getConnection(); 
} 

public static boolean closeConnection(Connection conn) 
{ 
    try 
    { 
     conn.close(); 
     return true; 
    } 
    catch (SQLException ex) 
    { 
     Logger.getLogger(Connector.class.getName()).log(Level.SEVERE, 
       "Connection could not be closed", ex); 
     return false; 
    } 
} 

}

我得到兩個包的錯誤，似乎他們不存在 （進口org.apache.tomcat.jdbc.pool.DataSource ; import org.apache.tomcat.jdbc.pool.PoolProperties;）

我做錯了什麼？ 預先感謝您。

Answer 1

你的類路徑中是否有tomcat-dbcp.jar？請確保tomcat lib目錄在您的類路徑中。