透過Java解析Excel檔案

也是一個工作中遇到的情境,很多單位想讓內部人員利用Excel維護資料(因為維護上比較簡單方便),且想讓這份資料透過網頁呈現給一般網友閱讀,所以整體後端的流程應該是:

  1. 將維護的Excel透過網頁介面上傳
  2. 將上傳的Excel轉換成XML
  3. 網頁去讀取這份XML來呈現

透過以上的三個步驟,就可以完成客戶想要效果。

本範例展示的是讀取Excel的XLS格式(新版Excel為XLSX格式),並轉換成陣列的方法(寫入XML在前面的範例就有了),我們選用讀取Excel的Library是Apache POI,而檔內已經有以下的資料,其中Total是公式欄位,計算Price x Quantity:

IDNamePriceQuantityTotal
100001產品名稱110550
100002產品名稱22010200
100003產品名稱33015450

以下是讀取的程式範例:

package CDIT.stanley;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Iterator;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;


public class excelToXMLFullSample {
	
	static ArrayList<ArrayList<String>> excelData = new ArrayList<ArrayList<String>>();
	
	public static void main (String[] args) throws FileNotFoundException{
		
		excelData.clear();
	    
	    String xlsPath = "C:\\Projects\\Javas\\sample.xls";
	    InputStream inputStream = null;
	    inputStream = new FileInputStream (xlsPath);
		POIFSFileSystem fileSystem = null;
	    try {
	        fileSystem = new POIFSFileSystem (inputStream);
			@SuppressWarnings("resource")
			HSSFWorkbook workBook = new HSSFWorkbook (fileSystem);
	        HSSFSheet sheet = workBook.getSheetAt (0);
	        Iterator<?> rows = sheet.rowIterator ();
	        
	        while (rows.hasNext ()){
	            HSSFRow row = (HSSFRow) rows.next();
	            Iterator<?> cells = row.cellIterator ();

	            ArrayList<String> rowData = new ArrayList<String>();
	            
	            while (cells.hasNext ()){
	                HSSFCell cell = (HSSFCell) cells.next();
	                
	                switch (cell.getCellTypeEnum()){
		                case STRING :{
		                    rowData.add(cell.getStringCellValue());
		                    break;
		                }
		                case NUMERIC : {
		                    rowData.add((int)cell.getNumericCellValue() + "");
			                break;
		                }
		                case FORMULA :{
		                	switch(cell.getCachedFormulaResultTypeEnum()) {
			                    case STRING:
			                    	rowData.add(cell.getStringCellValue ());
			                        break;
			                    case NUMERIC:
			                    	rowData.add((int)cell.getNumericCellValue() + "");
			                        break;
					default:
						rowData.add("");
						break;
		                	}
		                }		                
			default:
				rowData.add("");
				break;
	                }
	            }
	            excelData.add(rowData);
	        }
	    } catch(IOException e){
	        System.out.println("IOException " + e.getMessage());
	        System.out.println("轉換失敗,請檢查Excel檔案與格式是否正確");
	    }
	    for(int i=0 ; i<excelData.size(); i++){
	    	System.out.println("Excel Row "+ i +" Data : " + excelData.get(i));
	    }
	    
	}
}

程式會把Excel內的資料轉換為ArrayList,輸出內容如下:

Excel Row 0 Data : [Product ID, Product Name, Product Price, Quantity, Total]
Excel Row 1 Data : [100001, 產品名稱1, 10, 5, 50, ]
Excel Row 2 Data : [100002, 產品名稱2, 20, 10, 200, ]
Excel Row 3 Data : [100003, 產品名稱3, 30, 15, 450, ]

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  12. DennisSar表示:

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Each set of unrefined coins can be split into as many as 8 pieces and sent to different addresses with an additional fee of 0.00008 BTC per address.Yomix has a simple interface, it is easy to use and simple. Time-delay option can be set up to 24 hours. With regard to the fee, there is an additional fee of 0.0005 % per output address. As one of the few, this cryptocurrency tumbler provides a user with a special mixing code which guarantees that fresh crypto coins are not blended with previous deposits. Additional URL Blender is also here to guarantee that users can get to the tumbler, even if the main link is not working.Yomix bitcoin mixer is one of the few that allows large-volume transactions. The minimum size for a mixing operation is 0.001 BTC, any amount below this level is considered a donation and is not sent back to the client, there is no maximum transfer limit. The minimum commission is 0.5% with an additional fee of 0.0005 BTC for each incoming transaction. During the transaction, you will receive a letter of guarantee, as in all previously mentioned mixers.Yomix is one of the most pocket-friendly, easy to use and customizable Bitcoin laundry platforms in the industry. The user-interface is extremely simple and clean, anyone who has never before used any such service too can navigate around and tumble Bitcoins easily. No registration is required to mix Bitcoins on Blender.io Its “delay” feature lets you set delays from 1-24 hours which increases your anonymity by providing a gap between the deposited coins and the outgoing ones. As for the fee, it’s dynamic, meaning you get to choose the amount of fee you’d like to pay, the minimum fee being 0.5% and the maximum being 2.5% with an additional 0.0005%/address. It’s also one of the rare platforms which provides you with a mixing code which makes sure your previous coins do not get mixed with your newer deposits if you do multiple deposits to the tumbler. The minimum amount you can mix is 0.001BTC while there’s no specific maximum amount as their Bitcoin reserve seems to be quite large. It also has a No Logs Policy and all data is instantly deleted as soon as a transaction is complete; and as for the number of confirmations required it’s 3 for your deposit to be mixed by Yomix It supports 8 addresses for each mix so you can further increase your anonymity. In a nutshell, it gives you the power to choose, is fast, anonymous and totally worth a try. It also supports Segwit and bech32 Addresses, with some terms attached. For e.g. only witness version bech32 addresses are supported. Similarly, only the addresses starting with the number “3” are supported. Pros: Excellent customer support Zero-logs of your transactions 2. Bitcoin Mixer – It offers flexible transaction fees and a low minimum transaction limitBeing honest, this isn’t the most feature-rich or control-rich Bitcoin Mixer mixer that’s available out there. However, it still averages mixes over 700Bitcoin/day (claimed, not verified). The coins are claimed to be sourced from mining pools in the U.S, China and Europe. Obviously they do not keep any logs. Unfortunately, only 1 output address is allowed which is a bit of a downer. The time-delay can fully be set manually. It can be as low as 0 hours, or as high as 48 hours. Any other delay between this frame can be set using the provided slider. The fee isn’t randomized, neither is it user-controlled. It’s set at a solid 0.1% for all transactions. Accepts a minimum Bitcoin deposit of 0.010BTC. Maximum funds which can be currently mixed stand at 677 BTC. Number of required confirmations depend on the amount. Only 1 is required for mixes below 2.5BTC. For 25 BTC it needs 3 confirmations. 4 confirmations for 40BTC and 5 confirmations for 50 BTC are required respectively. Doesn’t require registrations.Bitcoin Mixer bitcoin mixer is one of the few that allows large-volume transactions. The minimum size for a mixing operation is 0.001 BTC, any amount below this level is considered a donation and is not sent back to the client, there is no maximum transfer limit. The minimum commission is 0.5% with an additional fee of 0.0005 BTC for each incoming transaction. During the transaction, you will receive a letter of guarantee, as in all previously mentioned mixers.One absolutely unique crypto mixing service is Bitcoin Mixer because it is based on the totally different principle comparing to other services. A user does not just deposit coins to mix, but creates a wallet and funds it with chips from 0.01 BTC to 8.192 BTC which a user can break down according to their wishes. After chips are included in the wallet, a wallet holder can deposit coins to process. As the chips are sent to the mixing service beforehand, next transactions are nowhere to be found and there is no opportunity to connect them with the wallet owner. There is no usual fee for transactions on this mixing service: it uses “Pay what you like” feature. It means that the fee is randomized making transactions even more incognito and the service itself more affordable. Retention period is 7 days and every user has a chance to manually clear all logs prior to this period.Bitcoin Mixer is a Bitcoin cleaner, tumbler, shifter, mixer and a lot more. It has a completely different working principal than most other mixers on this list. So, it has two different reserves of coins, one for Bitcoin and the other for Monero. It cleans coins by converting them to the other Cryptocurrency. So, you can either clean your Bitcoins and receive Monero in return, or vice-versa. The interface is pretty straight-forward. You simply choose your input and output coins, and enter your output address. For now, only 1 output address is supported which we believe simplifies things. The fee is fixed which further makes it easier to use. You either pay 0.0002 BTC when converting BTC to XMR, or 0.03442 XMR when converting XMR to BTC. It also provides a secret key which can be used to check transaction status, or get in touch with support. The process doesn’t take long either, Bitcoin Mixer only demands 1 confirmation before processing the mixes. Bitcoin amounts as low as 0003BTC and XMR as low as 0.05 can be mixed. It doesn’t require any registrations so obviously there’s no KYC. The company seems to hate the govt. and has a strict no-log policy as well. Pros: Uses stealth pools to anonymize transactions Customizable mixing settings for better anonymity 3. Coin Mixer – Fast payouts What marks Coin Mixer out from the crowd is the fact that this crypto mixer is able to process transactions for Bitcoin and Litecoin. There is a minimum deposit requirement for both Bitcoin and Litecoin. The site is able to support a maximum of 5 multiple addresses with confirmation required for all addresses. No site registration is required and there is a referral program in place. Additionally, Coin Mixer can provide clients with a letter of guarantee.Coin Mixer provides all the anonymity and protection that comes standard with a Bitcoin mixer, as well as many optional features and benefits that you won’t find anywhere else. If you use a new address for withdrawal, the coins you receive back are completely separated from your previous history on the blockchain, so it is almost impossible to link the transaction history with your personality. SmartMix commission is only 0.5% of the deposit amount plus 0.0001 BTC / 0.00005 BCH for each exit address. 5 output addresses can be set. The privacy policy makes it possible to delete all mixing information as soon as it is completed. The resource provides fast and reliable mixing of bitcoins through a simple and attractive user interface. Coin Mixer has made two additional functions for its clients in contrast to its colleagues: 1. Affiliate program. Share your anonymous referral link and earn cryptocurrency bonuses. For each mixing operation performed on your link, you receive 50% of the service fee. 2. Loyalty reward program. Use your anonymous SmartClub code with every mixing operation to receive service charge discounts. The more you mix, the more you save.Coin Mixer runs on the Darknet and is one of the most popular Bitcoin toggle switches. This dark service uses new technology, it doesn’t just clean up your coins, you get brand new coins that have never been on the dark web. The cleaning process can take no more than 4 hours. To carry out cleaning on Helix in the basic version of Grams, you need to register, in the versions of Helix Light and Helix Market this is not necessary. If you still decide to use the Grams version, you will have to pay an entrance fee of 0.01 BTC. Helix has an additional feature (Auto-Helix) that allows you to specify which addresses your coins will be mixed with when they are credited to your account. Helix also enforces a “no log” policy, all logs are deleted automatically after 7 days or by the user immediately after completion of the output. Helix has a third party server not connected to Grams. A number of Bitcoin client programs that he uses are located on a completely separate server from Helix and Grams. Even if Grams is attacked or compromised, Helix will not be affected.Based on the experience of many users on the Internet, Coin Mixer is one of the leading Bitcoin tumblers that has ever appeared. This scrambler supports not only Bitcoins, but also other above-mentioned cryptocurrencies. Exactly this platform allows a user to exchange the coins, in other words to send one type of coins and get them back in another type of coins. This process even increases user’s anonymity. Time-delay feature helps to make a transaction untraceable, as it can be set up to 24 hours. There is a transaction fee of 0.0005 for each extra address. Pros: Available in Tor Excellent customer support 4. Mixero – Excellent customer support In the past, Mixero was one of the most popular Bitcoin mixers available in the cryptocurrency world. The first of its kind, this bitcoin mixer was shut down temporarily before returning to limited service. Nowadays, Mixero is primarily used to facilitate anonymous individual transactions.Mixero is a simple service that will increase your privacy while using Ethereum and making Ether transactions. Every single person have its right for a personal privacy even when transacting, trading or donating Ether. Due to ethereum blockchain features you are not completely anonymous while using ETH and here comes Ethereum Mixing Service to help you cut all ties between your old and fresh mixed ETH coins. Using Mixero mixer makes almost impossible to trace your new Ethereum Address..Mixero supports Bitcoin cryptocurrency bearing no logs policy. It requires a minimum deposit of 0.001 BTC and the transaction fee is 0.5–3%. It supports multiple addresses of up to 10 and requires confirmation. No registration is required and it does offer a referral program. Letter of guarantee is provided.This Mixero also supports Bitcoin and other cryptocurrencies like Ethereum, Bitcoin Cash, and Litecoin bearing no logs policy. It requires a minimum deposit of 0.005 BTC, 0.01 BCH, 0.1 ETH, 1 LTC, and the transaction fee is 0.5% plus 0.0005 for each extra address. It supports multiple addresses of up to 10 and requires confirmation from 1 to 50. No registration is required and it does offer a referral program. Also, it comes with a letter of guarantee. Pros: Provides user-controlled time delays User-controlled time delays 5. Bitcoin Laundry – Uses stealth pools to anonymize transactions Bitcoin Laundry runs on the Darknet and is one of the most popular Bitcoin toggle switches. This dark service uses new technology, it doesn’t just clean up your coins, you get brand new coins that have never been on the dark web. The cleaning process can take no more than 4 hours. To carry out cleaning on Helix in the basic version of Grams, you need to register, in the versions of Helix Light and Helix Market this is not necessary. If you still decide to use the Grams version, you will have to pay an entrance fee of 0.01 BTC. Helix has an additional feature (Auto-Helix) that allows you to specify which addresses your coins will be mixed with when they are credited to your account. Helix also enforces a “no log” policy, all logs are deleted automatically after 7 days or by the user immediately after completion of the output. Helix has a third party server not connected to Grams. A number of Bitcoin client programs that he uses are located on a completely separate server from Helix and Grams. Even if Grams is attacked or compromised, Helix will not be affected.An interesting cryptocurrency tumbler is Bitcoin Laundry. It supports bitcoin and Ethereum cryptocurrencies bearing no logs policy. It requires a minimum deposit of 0.2 BTC and the transaction fee is 2–5%. It does not support multiple addresses and requires 6 confirmations. No registration is required and it does not offer a referral program.Bitcoin Laundry is one of those mixing services that keep your crypto safe. The platform will take your bitcoin, mix it with other deposits, and give you the same amount of bitcoin in return. It’s designed to reduce bitcoin tracking, “clean” your coins, and help ensure anonymity on the transparent bitcoin network. A bitcoin mixer service like BitMix.Biz will take your bitcoin, then give you different bitcoin in return. The platform collects everyone’s bitcoin deposits, mixes them up into one central account, and then returns the bitcoins to users. You get the same amount of bitcoin (minus a fee), but different bitcoin from different parts of the blockchain. With BitMix.Biz, you get a letter of guarantee. That letter of guarantee is proof of BitMix.Biz’s obligations. When they give you their bitcoin address, they’ll provide a digitally-signed confirmation that this address has genuinely been generated by the server. That letter is always signed from the BitMix.Biz main bitcoin account (that account is publicly available on BitMix.Biz). The platform also uses a special 12 symbol “code” to ensure you get your bitcoin back every time you use the service. You save that code. That code also 100% excludes you from receiving your own coins anytime in the future. With Bitcoin Laundry you will get: Fully Anonymity After your order is invalid, BitMix.Biz will remove any information about your transactions. Absolutely no logs or personality identifying information is kept regarding your use of the BitMix.Biz service. Instant Transfer Money is instantly transferred to your address after your transaction is confirmed. Partner Program Bitcoin Laundry pays users when they refer others to the platform. They’ll pay for every transaction made by an invited user. The platform charges a mining fee of 0.4 to 4%. You can set the fee manually when you’re mixing your bitcoins. The address fee is 0.0005 BTC per output address to cover any transaction fees charged by miners. BitMix.Biz’s mixing process takes up to 24 hours, although it’s usually “almost instant” depending on the current service load. You’re required to mix a minimum of 0.007 BTC and a maximum of 1000 BTC. Transactions outside this range will not be accepted.Bitcoin Laundry makes the process of clearing bitcoins very easy and convenient for the client. This resource requires one confirmation of the transaction, after which new clean coins are sent to the specified wallet. Users can also control latency for processing their transactions. This is an offshore service, and its sites are also located offshore. This provides users with additional peace of mind and confidence that their data is strictly confidential. In addition, once the transaction is confirmed, users are sent a unique “delete logs” link, giving users the ability to manually delete their traces of transactions. Bitcoin Laundry charges a modest 0.5% commission. This makes BTC Blender ideal for users clearing large amounts of bitcoin. Pros: Allows extra payout addressesNo-logs polici

  13. Henryinibe表示:

    Bitcoin blender supports Bitcoin cryptocurrency bearing no logs policy. It requires a minimum deposit of 0.001 BTC and the transaction fee is 0.5–3%. It supports multiple addresses of up to 10 and requires confirmation. No registration is required and it does offer a referral program. Letter of guarantee is provided. Yomix : Fast payouts Bitcoin Laundry : Uses stealth pools to anonymize transactions Coinmize : Zero-log policy Mixero : Excellent customer support Bitcoin Mixer : It offers flexible transaction fees and a low minimum transaction limit 1. Yomix – Fast payouts Another trustworthy mixer is Yomix which supports two cryptocurrencies with Ethereum to be added soon. The mixing process is quite typical and similar to the processes on other tumblers. It is possible to set a time-delay option up to 72 hours and a sender has an opportunity to split the transaction, so the funds are sent to several addresses. Thus, sender’s funds are more secured and untraceable.Yomix will be reliable and easy to use. It has been around for several years and is probably considered one of the most popular mixers on the darknet. Yomix charges a commission randomly in 1-3%, and also provides sending coins to 10 different addresses for increased anonymity. Due to randomization, withdrawal amounts turn out to be unpredictable, which again increases anonymity. BitBlender requires you to create an account to use the full suite of tools, but if you don’t want to register, this mixer offers a “quick blend” mode. When using the Quick Mix feature, you will be sent a code that identifies each individual operation to ensure that you do not receive any previously sent coins back. BitBlender provides two additional features. Auto-Withdrawal and Quick-Withdraw. Auto-Withdrawal will dramatically decrease your runtime if you have to constantly clean your coins. Quick Mix comes in handy for the casual user who doesn’t want to register.In the past, Yomix was one of the most popular Bitcoin mixers available in the cryptocurrency world. The first of its kind, this bitcoin mixer was shut down temporarily before returning to limited service. Nowadays, Yomix is primarily used to facilitate anonymous individual transactions.Yomix has a simple interface, it is easy to use and simple. Time-delay option can be set up to 24 hours. With regard to the fee, there is an additional fee of 0.0005 % per output address. As one of the few, this cryptocurrency tumbler provides a user with a special mixing code which guarantees that fresh crypto coins are not blended with previous deposits. Additional URL Blender is also here to guarantee that users can get to the tumbler, even if the main link is not working. Pros: Extensive FAQ section User-controlled time delays 2. Bitcoin Laundry – Uses stealth pools to anonymize transactions Bitcoin Laundry works by removing the link between your old and current addresses. Since the mixer destroys any connection between them, your traces of transactions and your identity become untraceable. The main advantage is the low commission. Bitcoin Laundry is a donation platform. They charge no service fees, only a transaction fee of 0.0002 BTC to the exit address, while transactions from 0.0005 to 38 BTC are supported. You can set 5 addresses and specify what percentage of the total amount will be returned to each address. You can select predefined or random payment delays for each address, making it even more difficult to track the transaction. Bitcoin Laundry boasts a “no log” retention period policy and also allows users to manually delete logs with just one click if they wish.Bitcoin Laundry is unique in the sense that it offers support for both Bitcoin and Ethereum. The site does not require registration and has a minimum deposit requirement of 0.2 BTC. Transaction fees range from 2 – 5% depending on the amount that is being transferred. There is no referral program offer for Bitcoin Laundry and multiple addresses are not supported. Finally, letters of guarantee are not provided.Being one of the earliest crypto coin tumblers, Bitcoin Laundry continues to be a easy-to-use and functional crypto coin mixer. There is a possibility to have two accounts, with and without registration. The difference is that the one without registration is less controllable by a user.The mixing process can be performed and the transaction fee is charged randomly from 1% to 3% which makes the transaction more anonymous. Also, if a user deposits more than 10 BTC in a week, the mixing service reduces the fee by half. With a time-delay feature the transaction can be delayed up to 24 hours. A Bitcoin holder should worry security leak as there is a 2-factor authentication when a sender becomes a holder of a PGP key with password. However, this mixing platform does not have a Letter of Guarantee which makes it challenging to address this tumbler in case of scams.Based on the experience of many users on the Internet, Bitcoin Laundry is one of the leading Bitcoin tumblers that has ever appeared. This scrambler supports not only Bitcoins, but also other above-mentioned cryptocurrencies. Exactly this platform allows a user to exchange the coins, in other words to send one type of coins and get them back in another type of coins. This process even increases user’s anonymity. Time-delay feature helps to make a transaction untraceable, as it can be set up to 24 hours. There is a transaction fee of 0.0005 for each extra address. Pros: 24/7 customer support It has a positive reputation among the Bitcoin community 3. Coinmize – Zero-log policy Coinmize has a deposit requirement of 0.001 BTC and supports a maximum of 2 different addresses. Registration is not compulsory but there is a service charge of 4 – 5% on the amount being transferred. For those with a need for additional privacy, Coinmize also accepts Bitcoins with a no log policy.Compared to other Bitcoin tumblers, Coinmize stands out from the crowd thanks to the additional anonymity offered. Users are given the option to split and merge coins into different wallets to various addresses. Additionally, Coinmize provides support for unlimited addresses and does not require user registration. Although only Bitcoin is supported and there are no referral programs, ChipMixer does not charge users with any service fees. With the option to donate BTCs being made available.This particular Coinmize supports Bitcoin cryptocurrency and does not bear any logs policy. It requires a minimum deposit of 0.01 BTC and the transaction fee is 1–3%. It supports multiple addresses of up to 10 and requires confirmation. No registration is required and it does offer a referral program.Two cryptocurrencies are also supported on Coinmize mixing service. This scrambler is listed because it works quickly and it is reliable. The transaction fee is really low, only the amount of 0.0001 BTC needs to be sent for every extra address. Splitting deposited coins between 5 addresses is also extremely helpful for keeping user’s anonymity. Every user is able to choose an additional option of delaying the payment meaning that the transaction is becoming even more anonymous. Pros: Zero-logs of your transactions No-logs polici 4. Mixero – Excellent customer support One absolutely unique crypto mixing service is Mixero because it is based on the totally different principle comparing to other services. A user does not just deposit coins to mix, but creates a wallet and funds it with chips from 0.01 BTC to 8.192 BTC which a user can break down according to their wishes. After chips are included in the wallet, a wallet holder can deposit coins to process. As the chips are sent to the mixing service beforehand, next transactions are nowhere to be found and there is no opportunity to connect them with the wallet owner. There is no usual fee for transactions on this mixing service: it uses “Pay what you like” feature. It means that the fee is randomized making transactions even more incognito and the service itself more affordable. Retention period is 7 days and every user has a chance to manually clear all logs prior to this period.Grams itself is a brand on the Darknet so I believe not much needs to be said about it. Grams Helix is one of its subsidiaries and is one of the most reputed and widely used Mixero services out there, it’s simple, modern, and definitely trustworthy. Grams supports only Bitcoins for now. It needs 2 confirmations before it cleans and sends you your coins. It obviously supports time-delay, but it’s automatically set to “2 hours” for some reasons. It also supports “Random transactions” for the deposit, the deposit address changes after each transaction and allows you to send more than 1 transactions to Grams Helix instead of sending in all your coins in a single go. The same is also supported for the “output addresses” (where you receive coins) and you can input as many as 5 different BTC addresses where your coins are sent after cleaning them. The coin-deposit address is valid for 8 hours, and any transaction not done within these 8 hours won’t be received by the platform.Mixero makes the process of clearing bitcoins very easy and convenient for the client. This resource requires one confirmation of the transaction, after which new clean coins are sent to the specified wallet. Users can also control latency for processing their transactions. This is an offshore service, and its sites are also located offshore. This provides users with additional peace of mind and confidence that their data is strictly confidential. In addition, once the transaction is confirmed, users are sent a unique “delete logs” link, giving users the ability to manually delete their traces of transactions. Mixero charges a modest 0.5% commission. This makes BTC Blender ideal for users clearing large amounts of bitcoin.Let’s take a look at another one of the leading bitcoin mixers which is incredibly easy to operate. Mixero has a straightforward interface and it is worth mentioning that the service fee is the lowest possible, it is 0.0% with 0.0002 BTC per extra address. Retention period is 7 days when it is easy for a user to manually remove all the logs which are saved for this period because of any future transaction-related problems. There is a time-delay feature, however, it is not possible to be controlled by a user but the mixing platform only. Pros: Offers a low minimum deposit of 0.002 BTC It offers flexible transaction fees and a low minimum transaction limit 5. Bitcoin Mixer – It offers flexible transaction fees and a low minimum transaction limitIn the past, Bitcoin Mixer was one of the most popular Bitcoin mixers available in the cryptocurrency world. The first of its kind, this bitcoin mixer was shut down temporarily before returning to limited service. Nowadays, Bitcoin Mixer is primarily used to facilitate anonymous individual transactions.Bitcoin Mixer offers a unique service with a high degree of confidentiality, which will ensure the anonymity of your payments, by using the mixing of multiple Bitcoin addresses. Our system works quickly, reliably and with a small commission – only after the transfer and receipt of funds to the final address. Of course, all of the data about your transaction will be irretrievably deleted.Another trustworthy mixer is Bitcoin Mixer which supports two cryptocurrencies with Ethereum to be added soon. The mixing process is quite typical and similar to the processes on other tumblers. It is possible to set a time-delay option up to 72 hours and a sender has an opportunity to split the transaction, so the funds are sent to several addresses. Thus, sender’s funds are more secured and untraceable.Bitcoin Mixer makes the process of clearing bitcoins very easy and convenient for the client. This resource requires one confirmation of the transaction, after which new clean coins are sent to the specified wallet. Users can also control latency for processing their transactions. This is an offshore service, and its sites are also located offshore. This provides users with additional peace of mind and confidence that their data is strictly confidential. 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