Visualforce Page to upload "csv" file without having DataLoader

You can upload the "csv" file into objects without having DataLoader. Check the code below.
Here is the example for Account object to insert csv file.

***********Visualforce Code**************


<apex:page sidebar="false" controller="FileUploader">
   <apex:form >
      <apex:sectionHeader title="Upload data from CSV file"/>
      <apex:pagemessages />
      <apex:pageBlock >
             <center>
              <apex:inputFile value="{!contentFile}" filename="{!nameFile}" /> <apex:commandButton action="{!ReadFile}" value="Upload File" id="theButton" style="width:70px;"/>
              <br/> <br/> <font color="red"> <b>Note: Please use the standard csv file to upload Accounts. </b> </font>
             </center> 
          
      <apex:pageblocktable value="{!uploadedAccounts}" var="acc" rendered="{!NOT(ISNULL(uploadedAccounts))}">
          <apex:column headerValue="Account Name">
              <apex:outputField value="{!acc.Name}"/>
          </apex:column>
          <apex:column headerValue="Shipping Street">
              <apex:outputField value="{!acc.ShippingStreet}"/>
          </apex:column>
          <apex:column headerValue="Shipping City">
              <apex:outputField value="{!acc.ShippingCity}"/>
          </apex:column>
          <apex:column headerValue="Shipping State">
              <apex:outputField value="{!acc.ShippingState}"/>
          </apex:column>
          <apex:column headerValue="Shipping Postal Code">
              <apex:outputField value="{!acc.ShippingPostalCode}"/>
          </apex:column>
          <apex:column headerValue="Shipping Country">
              <apex:outputField value="{!acc.ShippingCountry}"/>
          </apex:column>
      </apex:pageblocktable>
     
      </apex:pageBlock>      
   </apex:form>  
</apex:page>

***********Controller of the page**********


public class FileUploader
{
    public string nameFile{get;set;}
    public Blob contentFile{get;set;}
    String[] filelines = new String[]{};
    List<Account> accstoupload;
   
    public Pagereference ReadFile()
    {
        nameFile=contentFile.toString();
        filelines = nameFile.split('\n');
        accstoupload = new List<Account>();
        for (Integer i=1;i<filelines.size();i++)
        {
            String[] inputvalues = new String[]{};
            inputvalues = filelines[i].split(',');
           
            Account a = new Account();
            a.Name = inputvalues[0];
            a.ShippingStreet = inputvalues[1];      
            a.ShippingCity = inputvalues[2];
            a.ShippingState = inputvalues[3];
            a.ShippingPostalCode = inputvalues[4];
            a.ShippingCountry = inputvalues[5];

            accstoupload.add(a);
        }
        try{
        insert accstoupload;
        }
        catch (Exception e)
        {
            ApexPages.Message errormsg = new ApexPages.Message(ApexPages.severity.ERROR,'An error has occured. Please check the template or try again later');
            ApexPages.addMessage(errormsg);
        }   
        return null;
    }
   
    public List<Account> getuploadedAccounts()
    {
        if (accstoupload!= NULL)
            if (accstoupload.size() > 0)
                return accstoupload;
            else
                return null;                   
        else
            return null;
    }           
}

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