Java ry 15复制到tmp表从条目中选择e.*作为e左连接更正作为e.id=c.entry上的c，其中e.type=1按e.id分组 1857 govolable localhost:2794中国人学习睡眠23 1858 Govolable localhost

ry 15复制到tmp表从条目中选择e.*作为e左连接更正作为e.id=c.entry上的c，其中e.type=1按e.id分组 1857 govolable localhost:2794中国人学习睡眠23
1858 Govolable localhost:2796 chineselearning查询23复制到tmp表从条目中选择e.*作为e left join更正为c on e.id=c.entry其中e.type=1按e.id分组 1859 govolable localhost:2809 chineselearning查询0显示进程列表

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我认为你的部分问题是你没有关闭所有打开的东西。你可能想看看这个：嗨，詹姆斯，谢谢你的回复，但是close方法在finally块中被显式调用了？如果你看一下我给出的链接，close被调用了三次。

private static Logger log = Logger.getLogger(DB.class.getName());
private static DataSource ds = null;
private static Context initCtx = null; 

static {
    try {
        initCtx = new InitialContext();
        ds = (DataSource) initCtx.lookup("java:comp/env/jdbc/ens");
    } catch (Exception e) {
        // TODO: handle exception
        e.printStackTrace();
        log.error(e);
    }
}

public static Connection getConnection() throws SQLException {
    Connection con = ds.getConnection();
    return con;
}

public static QueryRunner getRunner() {
    return new QueryRunner();
}

protected Connection conn;
protected void getConnection() throws SQLException {
    this.conn = DB.getConnection();
}

protected void close() {
    DbUtils.closeQuietly(this.conn);
}

protected <T> List<T> selectList(String sql, Class<T> c, Page p,
        Object... params) throws SQLException {
    try {
        this.getConnection();
        QueryRunner runner = DB.getRunner();
        sql = sql  + this.getLimitClause(p);
        log.debug("selectList - " +sql);
        return runner.query(this.conn, sql,
                new BeanListHandler<T>(c), params);
    } catch (SQLException e) {
        // TODO: handle exception
        throw e;
    } finally {
        this.close();
    }
}

<Resource name="jdbc/ens"
  auth="Container"
  type="javax.sql.DataSource"
  factory="org.apache.tomcat.jdbc.pool.DataSourceFactory"
  testWhileIdle="true"
  testOnBorrow="true"
  testOnReturn="false"
  validationQuery="SELECT 1"
  validationInterval="30000"
  timeBetweenEvictionRunsMillis="30000"
  maxActive="270"
  minIdle="10"
  maxWait="10000"
  initialSize="20"
  removeAbandonedTimeout="60"
  removeAbandoned="true"
  logAbandoned="true"
  minEvictableIdleTimeMillis="30000"
  jmxEnabled="true"
  jdbcInterceptors="org.apache.tomcat.jdbc.pool.interceptor.ConnectionState;org.apache.tomcat.jdbc.pool.interceptor.StatementFinalizer"
  username="root"
  password="root"
  driverClassName="com.mysql.jdbc.Driver"
  url="jdbc:mysql://localhost/chineselearning?useUnicode=true&amp;characterEncoding=utf-8"/>