i am trying post pdf file from visual page to my controller using apex:form and send it third party using rest api, but on controller end i am not getting my pdf file.its field is null, visual page

<apex:page controller="SendAgreementExt" docType="html-5.0">
<apex:form enctype="multipart/form-data">
<apex:pageBlock >
       <apex:pageBlockButtons >
        <apex:commandButton value="Send" action="{!send}"/>

        <apex:pageBlockSection showHeader="false" columns="2">
            <apex:pageBlockSectionItem >
                <apex:outputLabel value="File Name" for="fileName" />
                 <apex:inputText value="{!attachment.name}"></apex:inputText>

            <apex:pageBlockSectionItem >
                <apex:outputLabel value="File" for="file" />
                 <apex:inputFile value="{!attachment.body}"></apex:inputFile>


Public with Sharing Class SendAgreementExt

       public String LeadMessage{get;set;}
       public String name{get;set;}
       public String agreement{get;set;}
      public Attachment attachment {  get {      if (attachment == null)
        attachment = new Attachment();
      return attachment;
    }  set;
  }        public void send()
           JSONParser parser;
             Http h = new Http();
         ID leadid=ApexPages.currentPage().getParameters().get('id');       
         string redirect_uri =URL.getSalesforceBaseUrl()+'/apex/sendagreementvf';

            HttpRequest req = new HttpRequest();
               req.setHeader('Content-Length', '512'); 
               req.setHeader('Access-Token', Label.echosign_access_token); 
               req.setHeader('Content-Type', 'application/x-www-form-urlencoded');  
               HttpResponse res;

               res = h.send(req);
            parser = JSON.createParser(res.getBody());

  • 2
    The apex:inputFile tag is the simplest way to bind a file input to controller properties including a Blob property to hold the data. – Keith C May 18 '16 at 20:48
  • i tried this also <apex:inputFile value="{!attachment.body}"></apex:inputFile> but how can i get file from this tag on controller – vishal chaudhary May 18 '16 at 20:58
  • in debug it shows Attachment:{Body=Blob[46003], Name=test} how can i extract pdf file from it or send pdf file through my api – vishal chaudhary May 18 '16 at 21:01
  • You need to research what formats the API allows. You can base 64 encode the Blob using EncodingUtil.base64Encode, but that only helps if they support that format. – Keith C May 18 '16 at 21:19
  • will it be work like this String pdf=base64Encode(attachment.body); – vishal chaudhary May 18 '16 at 21:22

thanx guys for your help i have done it ajax

<apex:page controller="SendAgreementExt">
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
    <form id="data" method="post" enctype="multipart/form-data">
        <apex:pageBlock >
            <apex:pageBlockSection showHeader="false" columns="2">
                <apex:pageBlockSectionItem >
                    <apex:outputLabel value="File Name" for="fileName" />
                    <input type="text" name="File-Name" value="" />
                    <input type="hidden" name="Mime-Type" value="application/pdf" />
                <apex:pageBlockSectionItem >
                    <apex:outputLabel value="File" for="file" />
                    <input name="File" type="file" />
            <apex:pageBlockButtons >
    <div id="warehouseList"></div>
    <script type="text/javascript">

            var formData = new FormData($(this)[0]);

                url: 'https://api.na1.echosign.com/api/rest/v5/transientDocuments',
                type: 'POST',
                headers: {'Access-Token' :'3AAABLblqZhCG8fU-alud8zcDf-N8I68P7yfB6nIi6U_PcCQsnobiSYzIpfzmgYaCMnl2PwcuVlSbk7yS_uNV8BkF8ymc3f2m'},
                data: formData,
                async: false,
                success: function (data) {
                cache: false,
                contentType: false,
                processData: false

            return false;

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