Laravel 9共享主机上mikehaertl/php-pdftk无法正常工作求助

开发Laravel 9项目时，使用mikehaertl/php-pdftk工具从数据库填充PDF表单，部署到共享主机后出现错误：提示找不到Java证书文件/usr/lib/jvm/java-1.5.0-gcj-1.5.0.0/jre/lib/security/cacerts，无法打开指定PDF文件。但相同主机和域名下的原生PHP代码可正常运行，Laravel代码报错，相关代码及错误信息如下：

错误信息 #

Error: Unexpected Exception in open_reader()
java.lang.RuntimeException: java.lang.RuntimeException: error instantiating default socket factory: java.security.KeyManagementException: java.security.KeyStoreException: java.io.FileNotFoundException: /usr/lib/jvm/java-1.5.0-gcj-1.5.0.0/jre/lib/security/cacerts (No such file or directory)
   at javax.net.ssl.SSLSocketFactory$ErrorSocketFactory.createSocket(libgcj.so.10)
   at gnu.java.net.protocol.http.HTTPConnection.getSocket(libgcj.so.10)
   at gnu.java.net.protocol.http.HTTPConnection.getOutputStream(libgcj.so.10)
   at gnu.java.net.protocol.http.Request.dispatch(libgcj.so.10)
   at gnu.java.net.protocol.http.HTTPURLConnection.connect(libgcj.so.10)
   at gnu.java.net.protocol.http.HTTPURLConnection.getInputStream(libgcj.so.10)
   at java.net.URL.openStream(libgcj.so.10)
   at pdftk.com.lowagie.text.pdf.RandomAccessFileOrArray.(pdftk)
   at pdftk.com.lowagie.text.pdf.RandomAccessFileOrArray.(pdftk)
   at pdftk.com.lowagie.text.pdf.PRTokeniser.(pdftk)
   at pdftk.com.lowagie.text.pdf.PdfReader.(pdftk)
   at pdftk.com.lowagie.text.pdf.PdfReader.(pdftk)
Caused by: java.lang.RuntimeException: error instantiating default socket factory: java.security.KeyManagementException: java.security.KeyStoreException: java.io.FileNotFoundException: /usr/lib/jvm/java-1.5.0-gcj-1.5.0.0/jre/lib/security/cacerts (No such file or directory)
   at javax.net.ssl.SSLSocketFactory.getDefault(libgcj.so.10)
   at javax.net.ssl.HttpsURLConnection.getDefaultSSLSocketFactory(libgcj.so.10)
   at javax.net.ssl.HttpsURLConnection.getSSLSocketFactory(libgcj.so.10)
   ...8 more
Caused by: java.security.KeyManagementException: java.security.KeyStoreException: java.io.FileNotFoundException: /usr/lib/jvm/java-1.5.0-gcj-1.5.0.0/jre/lib/security/cacerts (No such file or directory)
   at gnu.javax.net.ssl.provider.SSLContextImpl.defaultTrustManager(libgcj.so.10)
   at gnu.javax.net.ssl.provider.SSLContextImpl.engineInit(libgcj.so.10)
   at javax.net.ssl.SSLContext.init(libgcj.so.10)
   at javax.net.ssl.SSLSocketFactory.getDefault(libgcj.so.10)
   ...10 more
Caused by: java.security.KeyStoreException: java.io.FileNotFoundException: /usr/lib/jvm/java-1.5.0-gcj-1.5.0.0/jre/lib/security/cacerts (No such file or directory)
   at gnu.javax.net.ssl.provider.X509TrustManagerFactory.engineInit(libgcj.so.10)
   at javax.net.ssl.TrustManagerFactory.init(libgcj.so.10)
   at gnu.javax.net.ssl.provider.SSLContextImpl.defaultTrustManager(libgcj.so.10)
   ...13 more
Caused by: java.io.FileNotFoundException: /usr/lib/jvm/java-1.5.0-gcj-1.5.0.0/jre/lib/security/cacerts (No such file or directory)
   at gnu.java.nio.channels.FileChannelImpl.open(libgcj.so.10)
   at gnu.java.nio.channels.FileChannelImpl.(libgcj.so.10)
   at gnu.java.nio.channels.FileChannelImpl.create(libgcj.so.10)
   at java.io.FileInputStream.(libgcj.so.10)
   at java.io.FileInputStream.(libgcj.so.10)
   at gnu.javax.net.ssl.provider.X509TrustManagerFactory.engineInit(libgcj.so.10)
   ...15 more
Error: Failed to open PDF file: 
   https://tax-ein-number.com/pdf/fss4.pdf
Errors encountered.  No output created.
Done.  Input errors, so no output created.

Laravel控制器代码 #

use mikehaertl\pdftk\Pdf;
class FillAblePdfController extends Controller
{
    public function autofillpdf_ss4(Request $request, $order_id)
    {
         $filename = 'pdf_'.rand(2000, 1200000).'.pdf';
         $pdf = new Pdf(asset('/pdf/fss4.pdf'),[
                    'command' => public_path('/pdftk/bin/pdftk'),
                    'procEnv' => ['LD_LIBRARY_PATH' => public_path('pdftk/bin/libgcj.so.10')]
         ]);
         $result = $pdf->fillForm([
                'topmostSubform[0].Page1[0].f1_40[0]' => 'Jhon',
         ])->needAppearances()->saveAs(asset('pdf/'.$filename));

         if ($result === false) {
            echo $pdf->getError();
        }  
    }
}

可正常运行的原生PHP代码 #

require_once 'vendor/autoload.php';
use mikehaertl\pdftk\Pdf;
$filename = 'pdf_'.rand(2000, 1200000).'.pdf';
$pdf = new Pdf('./fss4.pdf',['command' => './pdftk/bin/pdftk','procEnv' => ['LD_LIBRARY_PATH' => './pdftk/lib/libgcj.so.10']]);
$result = $pdf->fillForm([
        'topmostSubform[0].Page1[0].f1_40[0]' => 'Ali'
    ])->needAppearances()
    ->saveAs('./pdf/'.$filename);
if ($result === false) {           
  echo $pdf->getError();
}
echo 'Your PDF is now generated, <a href="./pdf/'.$filename.'" download>Download it here</a>';

问题解决办法 #

核心问题分析 #

1. Laravel代码使用asset()生成HTTPS URL加载PDF，触发pdftk通过网络请求读取文件，进而触发Java证书查找逻辑；而原生PHP直接使用本地文件路径，规避了该问题。
2. LD_LIBRARY_PATH配置错误：该变量应指向包含libgcj.so.10的目录，而非文件本身。
3. saveAs()使用asset()生成的URL作为保存路径，属于错误用法，需用本地绝对路径。

修改后的Laravel控制器代码 #

use mikehaertl\pdftk\Pdf;
use Illuminate\Http\Request;

class FillAblePdfController extends Controller
{
    public function autofillpdf_ss4(Request $request, $order_id)
    {
         $filename = 'pdf_'.rand(2000, 1200000).'.pdf';
         // 使用本地绝对路径加载PDF，避免HTTPS请求触发证书问题
         $pdfSourcePath = public_path('/pdf/fss4.pdf');
         $pdf = new Pdf($pdfSourcePath, [
                    'command' => public_path('/pdftk/bin/pdftk'),
                    // 配置LD_LIBRARY_PATH指向libgcj.so.10所在目录
                    'procEnv' => ['LD_LIBRARY_PATH' => public_path('pdftk/lib')]
         ]);
         $savePath = public_path('pdf/'.$filename);
         $result = $pdf->fillForm([
                'topmostSubform[0].Page1[0].f1_40[0]' => 'Jhon',
         ])->needAppearances()->saveAs($savePath);

         if ($result === false) {
            echo $pdf->getError();
        }  
    }
}

额外排查点 #

• 确认共享主机上public/pdftk/lib/libgcj.so.10文件存在且权限为可读。
• 若仍有Java环境相关问题，可尝试在procEnv中添加JAVA_HOME指向主机上可用的JRE路径（如'JAVA_HOME' => '/usr/lib/jvm/java-1.8.0-openjdk'，需根据主机实际情况调整）。

内容的提问来源于stack exchange，提问作者MShoaib