通過Tomcat創建文件失敗

但是，它不能保存文件成功。我的意思是'RootCertGenerator.java'中的代碼應該生成一個'rootCertificate.cer'文件。這是成功的純Java工作。

但是當我在Tomcat運行 'generateRootCert.jsp' 它，它無法生成文件

請幫我

--generateRootCert.jsp

<%@ page language="java" contentType="text/html; charset=EUC-KR"%> 
<%@ page import="java.sql.DriverManager" %> 
<%@ page import="java.sql.Connection" %> 
<%@ page import="java.sql.PreparedStatement" %> 
<%@ page import="java.sql.Statement" %> 
<%@ page import="java.sql.SQLException" %> 
<%@ page import="java.sql.ResultSet" %> 
<%@ page import="myPackage.Utils" %> 
<%@ page import="myPackage.RootCertGenerator" %> 

<html> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=EUC-KR"> 
<title>Make root Certificate</title> 
</head> 
<% 
RootCertGenerator.execute(); 
%> 
<body> 
</body> 
</html>

--RootCertGenerator.java

package myPackage; 

import java.io.ByteArrayOutputStream; 
import java.io.FileOutputStream; 
import java.io.FileWriter; 
import java.io.OutputStreamWriter; 
import java.io.PrintStream; 
import java.io.StringWriter; 
import java.math.BigInteger; 
import java.security.*; 
import java.security.cert.X509Certificate; 
import java.util.Date; 

import javax.security.auth.x500.X500Principal; 

import org.bouncycastle.openssl.PEMWriter; 
import org.bouncycastle.x509.X509V1CertificateGenerator; 
//add 20130424 
//import org.bouncycastle.jce.provider.BouncyCastleProvider; 

//add 20130427 
import java.sql.DriverManager; 
import java.sql.Connection; 
import java.sql.PreparedStatement; 
import java.sql.Statement; 
import java.sql.SQLException; 
import java.sql.ResultSet; 


/** 
* Basic X.509 V1 Certificate creation. 
*/ 
public class RootCertGenerator 
{ 


    public static X509Certificate generateV1Certificate(KeyPair pair) 
     throws InvalidKeyException, NoSuchProviderException, SignatureException 
    { 
     //add 20130424 
     //Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider()); 
     // generate the certificate 
     X509V1CertificateGenerator certGen = new X509V1CertificateGenerator(); 

     certGen.setSerialNumber(BigInteger.valueOf(System.currentTimeMillis())); 
     certGen.setIssuerDN(new X500Principal("CN=Test Certificate")); 
     certGen.setNotBefore(new Date(System.currentTimeMillis() - (7 * 24 * 60 * 60 * 1000))); //1 week 
     certGen.setNotAfter(new Date(System.currentTimeMillis() + (7 * 24 * 60 * 60 * 1000))); 
     certGen.setSubjectDN(new X500Principal("CN=Test Certificate")); 
     certGen.setPublicKey(pair.getPublic()); 
     certGen.setSignatureAlgorithm("SHA256WithRSAEncryption"); 

     //return certGen.generateX509Certificate(pair.getPrivate(), "BC"); 
     return certGen.generateX509Certificate(pair.getPrivate()); 
    } 

    //////////added by jeon 
    public static void pemEncodeToFile(String filename, Object obj, char[] password) throws Exception{ 
    PEMWriter pw = new PEMWriter(new FileWriter(filename)); 
     if (password != null && password.length > 0) { 
      pw.writeObject(obj, "DESEDE", password, new SecureRandom()); 
     } else { 
      pw.writeObject(obj); 
     } 
     pw.flush(); 
     pw.close(); 
    } 
    //////////add 20130427 
    public static String pemEncodeToString(Object obj, char[] password) throws Exception{ 
     PEMWriter pw = new PEMWriter(new StringWriter(1)); 
      if (password != null && password.length > 0) { 
       pw.writeObject(obj, "DESEDE", password, new SecureRandom()); 
      } else { 
       pw.writeObject(obj); 
      } 
      String str=null; 
      pw.write(str); 

      return str; 
      //pw.flush(); 
      //pw.close(); 
     } 
    //////////add 20130427 
    public static void rootCertUpdate(String rootCert) 
    { 
     String sql = "update testca.testca_init set certificate = '"+rootCert+"' where user_id='root'"; 
     try { 
      Class.forName("com.mysql.jdbc.Driver"); 
     } catch (ClassNotFoundException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } 

     Connection conn = null; 
     //PreparedStatement pstmt = null; 

     Statement stmt = null; 
     //ResultSet rs = null; 

     String jdbcDriver = "jdbc:mysql://localhost:3306/"; 
     String dbUser = "root"; 
     String dbPass = "forgetmenot"; 

     try{ 
      conn = DriverManager.getConnection(jdbcDriver, dbUser, dbPass); 
      stmt = conn.createStatement(); 
      stmt.executeUpdate(sql); 

     }catch(Exception ex){System.out.println("Error 2: " +ex);} 
    } 
    //////////added by jeon 

    public static void execute() 
     throws Exception 
    { 
     Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider()); 
     // create the keys 
     KeyPair   pair = Utils.generateRSAKeyPair(); 


     ////private key 
     PrivateKey  key = (PrivateKey)pair.getPrivate(); 
     // generate the certificate 
     X509Certificate cert = generateV1Certificate(pair); 
     byte[] a = cert.getEncoded(); 
     //System.out.println(a); 
     //System.out.println(cert); 

     ////////////////////writing root certificate 
     PEMWriter pemWrt = new PEMWriter(new OutputStreamWriter(System.out)); 

     pemWrt.writeObject(cert); 

     pemEncodeToFile("rootCertificate.cer", cert, null); 

     //20130428 
     ByteArrayOutputStream baos = new ByteArrayOutputStream(); 
     PrintStream ps = new PrintStream(baos); 
     PrintStream old = System.out; 
     System.setOut(ps); 
     System.out.println(cert); 
     //System.out.flush(); 
     pemWrt.flush(); 
     System.setOut(old); 
     System.out.println("Here: " + baos.toString()); 
     pemWrt.close(); 

     rootCertUpdate(baos.toString()); 

     // show some basic validation 
     cert.checkValidity(new Date()); 

     cert.verify(cert.getPublicKey()); 

     System.out.println("valid certificate generated"); 
    } 
}

來源

2013-04-27 user1349407

您不僅應該提供證書的文件名（rootCerti ficate.cer），而且如果你在Tomcat中使用這個類，它也應該創建它的完整路徑。

您可以編輯以下行。相反

pemEncodeToFile("rootCertificate.cer", cert, null);

喜歡寫東西

pemEncodeToFile("C:/servers/rootCertificate.cer", cert, null);

或

pemEncodeToFile("C:\\servers\\rootCertificate.cer", cert, null);

該文件應在提到路徑中創建。確保該文件夾（在本例中爲「服務器」）已經存在。您還可以通過文件名來增強您的方法簽名並在JSP中編輯文件名。

來源

2013-04-27 19:26:38

你能給我一個例子'PEMWriter pw = new PEMWriter（new FileWriter（filename））;'在Windows系統上？ – user1349407 2013-04-27 19:32:02

感謝問題已解決 – user1349407 2013-04-27 20:13:19

通過Tomcat創建文件失敗

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