Java: InvalidAlgorithmParameterException Premier taille doit être un multiple de 64

J'ai mis en place un programme Java qui va se connecter et exécuter une commande sur un serveur distant à l'aide de JSCH. Le problème est qu'à chaque fois que j'ai essayé de vous connecter au serveur, j'ai obtenu l'exception suivante:

com.jcraft.jsch.JSchException: Session.connect: java.security.InvalidAlgorithmParameterException: Prime size must be multiple of 64, and can only range from 256 to 2048 (inclusive)

J'ai essayé la solution de l'ajout du Château Gonflable fournisseur de jre/lib et de la sécurité.fournisseur et il fonctionne. Mais j'ai besoin de faire ce projet dépend, j'ai essayé d'ajouter un Château Gonflable dans mon build path et ajouter manuellement le Château Gonflable fournisseur dans mon programme. Mais après l'exportation de pot, je ne reçois toujours l'exception.

package services;
import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.security.Security;
import java.util.Iterator;
import java.util.Properties;
import org.bouncycastle.jce.provider.BouncyCastleProvider;
public class MainService {
public MainService() {
Security.addProvider(new BouncyCastleProvider()); //Adding BouncyCastlePRovider in security
//TODO Auto-generated constructor stub
String report = "";
StringBuilder sb = new StringBuilder();
System.out.println("Running the monitoring...");
System.out.println("Starting printer monitoring...");
PrinterService ps = new PrinterService(); //A service that connects to the server and executes the commands
System.out.println("Building report for printer");
sb.append(ps.buildReport());
System.out.println("Done building report for printer");
System.out.println("Finish printer Monitoring...");
report = sb.toString();
writeToFile(report,"fai");
}
public static void main(String[] args) {
//TODO Auto-generated method stub
MainService msrv = new MainService();
}
public void writeToFile(String contents,String report_name){
try {
System.out.println("Writing to file...");
PrintWriter pw = new PrintWriter(new BufferedWriter(new FileWriter(report_name+".html",false)));
pw.println(contents);
pw.close();
System.out.println("Done writing...");
} catch (IOException e) {
e.printStackTrace();
}
}
}

Voici ma utilitaires du Serveur qui gère la connexion au serveur:

package utilities;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Properties;
import javax.swing.JOptionPane;
import com.jcraft.jsch.ChannelExec;
import com.jcraft.jsch.JSch;
import com.jcraft.jsch.JSchException;
import com.jcraft.jsch.Session;
import entity.Server;
public class ServerUtil {
public ServerUtil() {
//TODO Auto-generated constructor stub
}
public static Session createSession(Server srv){
JSch js = new JSch();
try {
Session s = js.getSession(srv.getUser().getUsername(), srv.getAddress(), 22);
s.setPassword(srv.getUser().getPassword());
Properties config = new Properties();
config.put("StrictHostKeyChecking", "no");
config.put("PreferredAuthentications", "password");
s.setConfig(config);
s.connect();
return s;
} catch (JSchException e) {
//TODO Auto-generated catch block
e.printStackTrace();
return null;
}
}
public static ArrayList<String> executeCommands(Session s, String commands){
ArrayList<String> result = new ArrayList<String>();
try {
System.out.println("Creating channel...");
ChannelExec channel = (ChannelExec) s.openChannel("exec");
System.out.println("Channel created.");
System.out.println("Setting commands...");
channel.setCommand(commands);
System.out.println("Commands set.");
System.out.println("Connecting to channel...");
channel.connect();
System.out.println("Channel connected.");
System.out.println("Retrieving output...");
BufferedReader reader = new BufferedReader(new InputStreamReader(channel.getInputStream()));
String line;
while((line = reader.readLine()) != null){
result.add(line);
}
System.out.println("Output retrieved.");
channel.disconnect();
System.out.println("Returning result...");
return result;
} catch (JSchException e) {
//TODO Auto-generated catch block
e.printStackTrace();
return result;
}catch (IOException e) {
//TODO Auto-generated catch block
e.printStackTrace();
return result;
}
}
}

Pendant le débogage, je trouve que l'erreur se produit lorsque l'imprimante de service tente de se connecter au serveur.

    package services;
import java.sql.Timestamp;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.Iterator;
import java.util.StringTokenizer;
import com.jcraft.jsch.Session;
import entity.Server;
import utilities.DatabaseUtil;
import utilities.ServerUtil;
public class PrinterService {
private ArrayList<String> server_names;
private ArrayList<ArrayList<String>> result_server;
public PrinterService() {
//TODO Auto-generated constructor stub
executePrinterMonitoring();
}
//Connect to the printer server and process printer monitoring
public void executePrinterMonitoring(){
Iterator<Server> it_s = DatabaseUtil.getServers("PRINTER").iterator();
server_names = new ArrayList<String>();
result_server = new ArrayList<ArrayList<String>>();
while(it_s.hasNext()){
Server svr = it_s.next();
System.out.println("***********START PRINTER SERVER***********");
String commands = "lpstat -t | sed '/READY/d'; lpstat -W | sed '/READY/d'";
Session connect = ServerUtil.createSession(svr);
StringTokenizer tokenize = new StringTokenizer(commands, ";");
ArrayList<String> res;
ArrayList<ArrayList<String>> res2 = new ArrayList<ArrayList<String>>();
System.out.println("Executing commands...");
while(tokenize.hasMoreTokens()){
String comm = tokenize.nextToken().trim();
res = ServerUtil.executeCommands(connect, comm);
res2.add(res);
}
System.out.println("Done executing commands...");
System.out.println("Processing results...");
processPMonitoring(res2,svr.getName());
connect.disconnect();
System.out.println("***********END PRINTER SERVER***********");
}
}
//Get the current date, date - 1, and date - 2
public String getDate(Calendar cal){
String mon;
String dy;
String dy2;
String dy3;
String yr;
int month = cal.get(Calendar.MONTH)+1;
int day = cal.get(Calendar.DATE);
int year = cal.get(Calendar.YEAR);
if(month < 10)
mon = "0"+month;
else
mon = ""+month;
if(day < 10){
dy = "0"+day;
}
else{
dy = ""+day;
}
yr = (year+"").substring(2, 4);
String date =  mon+ "/"+dy+"/"+yr;
return date;
}
//Split and process the result from the server.
public void processPMonitoring(ArrayList<ArrayList<String>> s,String servername){
Iterator<String> res1 = s.get(0).iterator();
Iterator<String> res2 = s.get(1).iterator();
ArrayList<String> as = new ArrayList<String>();
ArrayList<String> fres = new ArrayList<String>();
Calendar cal = Calendar.getInstance();
String date1 = getDate(cal);
cal.add(Calendar.DATE, -1);
String date2 = getDate(cal);
cal.add(Calendar.DATE, -1);
String date3 = getDate(cal);
int header = 1;
System.out.println("Checking server:"+servername);
System.out.println("Getting queued results...");
while(res1.hasNext()){
if(header <= 3){
//as.add(res1.next());
header++;
}
else{
String curr = res1.next();
if(curr.contains("@")){
if(curr.contains("STDIN")){
String f4 = "";
String f5 = "";
if(res1.hasNext())
f4 = res1.next();
if(res1.hasNext())
f5 = res1.next();
if(f4.contains(date1)){
as.add(curr);
}
else if(f4.contains(date2)){
as.add(curr);
}
else if(f4.contains(date3)){
as.add(curr);
}
}
}
else{
String f1 = curr;
String f2 = "";
String f3 = "";
if(res1.hasNext())
f2 = res1.next();
if(res1.hasNext())
f3 = res1.next();
if(f2.contains(date1)){
as.add(f1);
}
else if(f2.contains(date2)){
as.add(f1);
}
else if(f2.contains(date3)){
as.add(f1 + " - 3 DAYS OLD!");
}
}
}
}
System.out.println("Done queued results...");
Iterator<String> g = as.iterator();
boolean flag = true;
String cl = "";
String std = "";
header = 1;
System.out.println("Processing queued results...");
while(res2.hasNext() && g.hasNext()){
if(header <=2){
fres.add(res2.next());
header++;
}
else{
String curr = res2.next();
if(curr.contains("@")){
fres.add(curr);
continue;
}
if(flag){
cl = g.next();
if(cl.contains("@") && cl.contains("STDIN")){
continue;
}
int first_st = cl.indexOf("STDIN");
int last_ind = 0;
for(last_ind = first_st+1;;last_ind++){
//System.out.println("Value of CL:"+cl);
//System.out.println("Checking for spaces");
//System.out.println("STD CURRENT CHAR:"+cl.charAt(last_ind));
if(cl.charAt(last_ind) == ' '){
break;
}
}
std = cl.substring(first_st, last_ind);
flag = false;
if(fres.get(fres.size()-1).contains(std)){
flag = true;
continue;
}
}
if(curr.contains(std)){
fres.add(curr);
flag = true;
}
}
}
System.out.println("Done processing queued results...");
System.out.println("Post-process queued results...");
int size = fres.size();
boolean down = false;
for(int i=0;i<size;i++){
if(fres.get(i).contains("@") && fres.get(i).contains("DOWN")){
down = true;
fres.remove(i);
i--;
size--;
continue;
}
if(down){
if(fres.get(i).contains("@") && !fres.get(i).contains("DOWN")){
down = false;
continue;
}
fres.remove(i);
i--;
size--;
}
}
System.out.println("Done post-processing queued results...");
//Post-process
server_names.add(servername);
result_server.add(fres);
//fres.add(0,servername);
//writeToFile(fres,3);
}
public String buildReport(){
String report = "";
StringBuilder sb = new StringBuilder();
Timestamp ts = new Timestamp(new Date().getTime());
sb.append("<table style=\"border:1px solid black; text-align:center;\" rules=\"all\">");
sb.append("<h1 style=\"margin:0px 0px 0px 50px\">Printer Monitoring as of "+ts.toString()+"</h1>");
sb.append("<tr style=\"background-color: seagreen\">"
+ "<th style=\"padding: 6px\">SERVER</th>"
+ "<th style=\"padding: 6px\">QUEUE</th>"
+ "<th style=\"padding: 6px\">DEV</th>"
+ "<th style=\"padding: 6px\">STATUS</th>"
+ "<th style=\"padding: 6px\">JOB FILES</th>"
+ "<th style=\"padding: 6px\">USER</th>"
+ "<th style=\"padding: 6px\">PP</th>"
+ "<th style=\"padding: 6px\">%</th>"
+ "<th style=\"padding: 6px\">BLKS</th>"
+ "<th style=\"padding: 6px\">CP</th>"
+ "<th style=\"padding: 6px\">RNK</th>"
+ "</tr>");
int counter = 0;
Iterator<String> it_s = server_names.iterator();
while(it_s.hasNext()){
sb.append("<tr style=\"background-color: green\"><td style=\"padding: 6px\"><b>"+it_s.next().toUpperCase()+"</b></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>");
Iterator<String> it_res = result_server.get(counter).iterator();
if(result_server.get(counter).isEmpty()){
sb.append("<tr><td></td><td style=\"padding: 6px\"><h5>CLEAN</h5></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>");
}
else if(result_server.get(counter).size() == 2){
sb.append("<tr><td></td><td style=\"padding: 6px\"><h5>CLEAN</h5></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>");
}
else{
while(it_res.hasNext()){
String res = it_res.next();
if(!res.contains("Dev") && !res.contains("----")){
StringTokenizer tok = new StringTokenizer(res," ");
sb.append("<tr>");
if(tok.countTokens() == 11){
sb.append("<td style=\"padding: 6px\"></td>");
for(int x=0;x<10;x++){
if(x == 3){
sb.append("<td style=\"padding: 6px\">"+tok.nextToken()+" "+tok.nextToken()+"</td>");
}
else{
sb.append("<td style=\"padding: 6px\">"+tok.nextToken()+"</td>");
}
}
}
else{
sb.append("<td style=\"padding: 6px\"></td>");
sb.append("<td style=\"padding: 6px\"></td>");
sb.append("<td style=\"padding: 6px\"></td>");
sb.append("<td style=\"padding: 6px\">"+tok.nextToken()+"</td>");
sb.append("<td style=\"padding: 6px\">"+tok.nextToken()+" "+tok.nextToken()+"</td>");
sb.append("<td style=\"padding: 6px\">"+tok.nextToken()+"</td>");
sb.append("<td style=\"padding: 6px\"></td>");
sb.append("<td style=\"padding: 6px\"></td>");
sb.append("<td style=\"padding: 6px\">"+tok.nextToken()+"</td>");
sb.append("<td style=\"padding: 6px\">"+tok.nextToken()+"</td>");
sb.append("<td style=\"padding: 6px\">"+tok.nextToken()+"</td>");
}
sb.append("</tr>");
}
}
}
counter++;
}
sb.append("</table>");
sb.append("</br></br>");
report = sb.toString();
return report;
}
}

Je voudrais aussi savoir si il existe un moyen de faire Château Gonflable un peu de poids, car j'ai besoin de mon bocal pour être < 2 MO car j'ai besoin de le transférer à un serveur, et je n'ai pas l'autorisation pour le transfert d'un fichier > 2 MO.

Vous remercier pour l'aide. Ceci est mon premier post dans stackoverflow, et j'aime vraiment cette communauté. Merci.

OriginalL'auteur Vaanz | 2016-03-30