package com.impala.util;
import com.mchange.v2.c3p0.ComboPooledDataSource;
import org.apache.commons.dbutils.QueryRunner;
import org.apache.commons.dbutils.handlers.BeanListHandler;
import javax.sql.DataSource;
import java.sql.Connection;
import java.sql.SQLException;
import java.util.List;
/**
* @ClassName: ImpalaC3P0Util
* @Description: TODO
* @Author TanXiongZhan
* @Date 2019/7/1
*/
public class ImpalaC3P0Util {
private static DataSource ds;
private static QueryRunner queryRunner;
static {
ds = new ComboPooledDataSource();
queryRunner = new QueryRunner(ImpalaC3P0Util.getDatasSource());
}
public static DataSource getDatasSource() {
return ds;
}
public static Connection getConn() {
Connection con = null;
try {
con = ds.getConnection();//每一次从ds中获取一个新的连接 } catch (Exception e) {
e.printStackTrace();
}
return con;
}
public static void update(String sql) {
try {
queryRunner.update(sql);
} catch (SQLException e) {
e.printStackTrace();
}
}
public static List queryList(Class entityClass, String sql, Object... params) {
List list = null;
try {
list = queryRunner.query(sql, new BeanListHandler(entityClass), params);
} catch (SQLException e) {
e.printStackTrace();
}
return list;
}
}
3.6 集成C3P0测试
Record类如下：
package com.impala.model;
/**
* @Author: Yang JianQiu
* @Date: 2019/7/15 16:13
*/
public class Record {
private String imsi;
private Long uptime;
public String getImsi() {
return imsi;
}
public void setImsi(String imsi) {
this.imsi = imsi;
}
public Long getUptime() {
return uptime;
}
public void setUptime(Long uptime) {
this.uptime = uptime;
}
}
测试代码：
package com.impala.test;
import com.impala.model.ImsiRecord;
import com.impala.model.Record;
import com.impala.util.ImpalaC3P0Util;
import java.util.List;
/**
* @Author: Yang JianQiu
* @Date: 2019/7/15 16:17
*/
public class Test {
public static void main(String[] args) {
String sql = "select imsi, uptime from imsi_record_by_hour order by uptime limit 10 ";
Record record = new Record();
List list = ImpalaC3P0Util.queryList(Record.class, sql);
for (Record record1: list){
System.out.println(record1.getImsi() + "-" + record1.getUptime());
}
}
}
--只包含执行部分的PL/SQL块
--set serveroutput off
begin
dbms_output.put_line('Hello,everyone!');
end;
select * from emp;
--包含定义部分和执行部分的PL/SQL块
declare
v_ename varchar2(5);
begin
select
转：http://stackoverflow.com/questions/6352208/how-to-solve-plugin-execution-not-covered-by-lifecycle-configuration-for-sprin
maven报错：
Plugin execution not covered by lifecycle configuration:
要使用MonkeyRunner，就要学习使用Python，哎
先抄一段官方doc里的代码
作用是启动一个程序（应该是启动程序默认的Activity），然后按MENU键，并截屏
# Imports the monkeyrunner modules used by this program
from com.android.monkeyrunner import MonkeyRun
