PHP传输base64数据不完整的解决方法

<?php
header('Content-Type: text/html; charset=utf-8');
header('Access-Control-Allow-Origin: *'); // 允许任何网址请求
header('Access-Control-Allow-Methods: POST, GET, OPTIONS, DELETE'); // 允许请求的类型
header('Access-Control-Allow-Credentials: true'); // 设置是否允许发送 cookies
header('Access-Control-Allow-Headers: Content-Type, Content-Length, Accept-Encoding, X-Requested-with, Origin'); // 设置允许自定义请求头的字段


// 接收POST数据

$base64=$_POST['base'];

<?php
header('Content-Type: text/html; charset=utf-8');
header('Access-Control-Allow-Origin: *'); // 允许任何网址请求
header('Access-Control-Allow-Methods: POST, GET, OPTIONS, DELETE'); // 允许请求的类型
header('Access-Control-Allow-Credentials: true'); // 设置是否允许发送 cookies
header('Access-Control-Allow-Headers: Content-Type, Content-Length, Accept-Encoding, X-Requested-with, Origin'); // 设置允许自定义请求头的字段


// 接收POST数据
$postData = file_get_contents('php://input');
$base64=urldecode($postData);
$new_base64 = substr($base64, 27); 

StringBuffer filePathStr=new StringBuffer();
			for(int i=0;i<fileList.size();i++){
				JSONObject fileObj = fileList.getJSONObject(i);
				if(null!=fileObj){
					String fileContent=fileObj.getString("FileContent");
					String fileName=fileObj.getString("FileName");
					//Base64解码  
					byte[] bytes=Base64.decodeBase64(fileContent);
					  for (int j = 0; j < bytes.length; ++j) {  
					        if (bytes[j] < 0) {// 调整异常数据  
					        	bytes[j] += 256;  
					        }  
					  }