VF實現Excel/CSV的導入導出

時間 2019-11-12

標籤實現 excel csv 導入導出欄目 Microsoft Office 简体版

原文原文鏈接

1.先貼上VF頁面的代碼經過在<apex:page contenttype="application/x-excel# GenExcel.xls>能夠實現生成Excelhtml

實現Excel的導出VF頁面代碼以下數組

<apex:page controller="BookController" contenttype="application/x-excel# GenExcel.xls" showheader="false"> app

<head>fetch

</head>url

<apex:dataTable value="{!acclist}" var="acc" border="1">debug

<apex:column >excel

<apex:facet name="header">Name</apex:facet>code

{!acc.Name}orm

</apex:column>

<apex:column >

<apex:facet name="header">Phone</apex:facet>

{!acc.Phone}

</apex:column>

<apex:column >

<apex:facet name="header">AccountNumber</apex:facet>

{!acc.AccountNumber}

</apex:column>

</apex:dataTable>

</apex:page>

apex類後臺控制器代碼

public class BookController {

public List<Account> acclist{get;set;}

public List<Account> getBookWithIndex() {

String fetchAllGoods = 'SELECT Name,Phone,AccountNumber FROM Account';

system.debug(fetchAllGoods);

acclist = Database.query(fetchAllGoods);

return acclist;

}

二、實現CSV、EXcel的導入都是一樣的方法

VF頁面代碼

<apex:page controller="importDataFromCSVController">

<apex:form >

<apex:pagemessages />

<apex:pageBlock >

<apex:pageBlockSection columns="4">

<apex:inputFile value="{!csvFileBody}" filename="{!csvAsString}"/>

<apex:commandButton value="Import Account" action="{!importCSVFile}"/>

</apex:pageBlockSection>

</apex:pageBlock>

<apex:pageBlock >

<apex:pageblocktable value="{!accList}" var="acc">

<apex:column value="{!acc.Name}" />

<apex:column value="{!acc.Phone}" />

<apex:column value="{!acc.AccountNumber}" />

</apex:pageblocktable>

</apex:pageBlock>

</apex:form>

</apex:page>

Apex類控制後臺代碼實現

public class importDataFromCSVController {

public Blob csvFileBody{get;set;}

public string csvAsString{get;set;}

public String[] csvFileLines{get;set;}

public List<Account> acclist{get;set;}

public importDataFromCSVController(){

csvFileLines = new String[]{};

acclist = New List<Account>();

}

public void importCSVFile(){

system.debug('ssss');

try{

csvAsString = bitToString(csvFileBody,'gb2312');

system.debug(csvAsString);

csvFileLines = csvAsString.split('\n');

system.debug(csvFileLines.size());

for(Integer i=1;i<csvFileLines.size();i++){

system.debug('Account');

Account accObj = new Account() ;

string[] csvRecordData = csvFileLines[i].split(',');

system.debug(csvRecordData);

accObj.Name = csvRecordData[0] ;

accObj.Phone=csvRecordData[1];

accObj.AccountNumber=csvRecordData[2];

acclist.add(accObj);

system.debug('gg'+ accObj.AccountNumber);

}

system.debug(acclist);

insert acclist;

ApexPages.Message successMsg = new ApexPages.Message(ApexPages.severity.INFO,'import success');

ApexPages.addMessage(successMsg);

}

catch (Exception e)

{

ApexPages.Message errorMessage = new ApexPages.Message(ApexPages.severity.ERROR,'An error has occured while importin data Please make sure input csv file is correct');

ApexPages.addMessage(errorMessage);

}

public static String bitToString(Blob input, String inCharset){

//轉換成16進制

String hex = EncodingUtil.convertToHex(input);

//一個String類型兩個字節 32位（bit）,則一個String長度應該爲兩個16進制的長度，因此此處向右平移一個單位，即除以2

//向右平移一個單位在正數狀況下等同於除以2，負數狀況下不等

//eg 9 00001001 >>1 00000100 結果爲49

final Integer bytesCount = hex.length() >> 1;

// //聲明String數組，長度爲16進制轉換成字符串的長度1

String[] bytes = new String[bytesCount];

for(Integer i = 0; i < bytesCount; ++i) {

//將相鄰兩位的16進制字符串放在一個String中

bytes[i] = hex.mid(i << 1, 2);

}

//解碼成指定charset的字符串

return EncodingUtil.urlDecode('%' + String.join(bytes, '%'), inCharset);

}

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