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View mysql 隔离级别及事务传播
TRANSACTION(事务隔离级别)
1. ISOLATION_DEFAULT:这是一个PlatfromTransactionManager默认的隔离级别,使用数据库默认的事务隔离级别。
每种数据库的默认隔离级别是不同的,例如SQL Server、Oracle默认Read Commited,MySQL默认Repeatable Read。
另外四个与JDBC的隔离级别相对应,不同的隔离级别采用不同的锁类型来实现,在四种隔离级别中,Serializable的
隔离级别最高,Read Uncommited的隔离级别最低。
2. ISOLATION_READ_UNCOMMITTED:读未提交数据,这是事务最低的隔离级别,在并发的事务中,它充许一个事务可以
读到另一个事务未提交的更新数据。(会出现脏读,不可重复读和幻读)
3. ISOLATION_READ_COMMITTED:读已提交数据,保证在并发的事务中,一个事务修改的数据提交后才能被另外一个事
@PhilipTang
PhilipTang / STD3DES.java
Last active Jun 8, 2020
标准的3DES加密&解密(Java 和 PHP 版)
View STD3DES.java
// javac test3.java
// java test3
import java.security.Key;
import javax.crypto.Cipher;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.DESedeKeySpec;
import javax.crypto.spec.IvParameterSpec;
View 详细的通知数据示例.md
# 商户签名参数
partner = "123456"
key     = "sdfasdfasdfasfasdfa"
	
# 签名过程
------------- RECEIVE_SUCCESS ---------------
排序前:{"notify_id":"14732279660721951","uid":"foo01","partner":"123456","appid":"abcdefg","trade_status":"RECEIVE_SUCCESS","sign":"","data":"{\"id\":\"1604051506e9e4c591859a2016488e794a44b533\",\"message\":\"\\u606d\\u559c\\u53d1\\u8d22\",\"recipient\":\"userid001\",\"amount\":\"1.00\",\"groupid\":\"\",\"count\":1}","create_time":"2016-09-12 18:30:54","notify_time":"2016-09-12 19:36:59"}
排序后:{"appid":"abcdefg","create_time":"2016-09-12 18:30:54","data":"{\"id\":\"1604051506e9e4c591859a2016488e794a44b533\",\"message\":\"\\u606d\\u559c\\u53d1\\u8d22\",\"recipient\":\"userid001\",\"amount\":\"1.00\",\"groupid\":\"\",\"count\":1}","notify_id":"14732279660721951","notify_time":"2016-09-12 19:36:59","partner":"123456","sign":"","trade_status":"RECEIVE_SUCCESS","uid":"foo01"}
签名原始串:appid=abcdefg&create_time=2016-09-12 18:30:54&data={"id":"1604051506e9e4c591859a2016488e794a44b533","message":"\u606
@PhilipTang
PhilipTang / update_gfwlist.sh
Created Nov 29, 2016 — forked from VincentSit/update_gfwlist.sh
Automatically update the PAC for ShadowsocksX. Only tested on OS X.
View update_gfwlist.sh
#!/bin/bash
# update_gfwlist.sh
# Author : VincentSit
# Copyright (c) http://xuexuefeng.com
#
# Example usage
#
# ./whatever-you-name-this.sh
#
# Task Scheduling (Optional)
@PhilipTang
PhilipTang / how-i-solved.java
Created Dec 13, 2016 — forked from ngs/how-i-solved.java
Twitter SSL error causes empty page on android.webkit.WebView
View how-i-solved.java
@Override
public void onReceivedSslError(WebView view,
SslErrorHandler handler, SslError error) {
handler.proceed();
}
View unwxapkg.py
#!/usr/bin/python
# usage python unwxapkg.py filename
import sys,os
import struct
class WxapkgFile:
nameLen = 0
name = ""
View wx_t1t_hack.js
var CryptoJS = require('crypto-js')
var request = require('request-promise')
/*
* npm install crypto-js request-promise request
* node wx_t1t_hack.js
*/
// export function testEncription(msg, fullKey) {
// var fullKey = fullKey.slice(0, 16)
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