我从一个名为Task的类中调用一个swingworker线程，它正在给NoClassDefFoundError。
Task.class和Install.class`都在jar的根目录中。
这是出错的代码：
@Override
public void actionPerformed(ActionEvent e){
if(e.getActionCommand() == "install") {
new Task().execute();
}
}
new Task().execute();是第125行。
修改 这是任务类：
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.util.Enumeration;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import javax.swing.JOptionPane;
import javax.swing.SwingUtilities;
import javax.swing.SwingWorker;
import org.json.simple.JSONObject;
import org.json.simple.parser.JSONParser;
import org.json.simple.parser.ParseException;
public class Task extends SwingWorker<Integer, String>{
String v;
String wf;
String rp;
String pn;
String otxt;
public void deleteb() {
JOptionPane.showMessageDialog(null, "The delete button isnt working yet!");
}
public void installb() {
try {
SwingUtilities.invokeLater(new Runnable() {
Install i = new Install();
public void run() {
i.setlptext("Getting map information.");
}
});
read();
setvar();
SwingUtilities.invokeLater(new Runnable() {
Install i = new Install();
public void run() {
i.setlversion(v);
i.setlmapname(pn);
i.setlptext("Creating file system.");
}
});
} catch(FileNotFoundException e) {
e.printStackTrace();
} catch(IOException e) {
e.printStackTrace();
}
try {
createfilesystem();
SwingUtilities.invokeLater(new Runnable() {
Install i = new Install();
public void run() {
i.setlptext("Exporting world resources.");
}
});
ExportResource("/" + wf,true);
SwingUtilities.invokeLater(new Runnable() {
Install i = new Install();
public void run() {
i.setlptext("Copying world to profile folder.");
}
});
copyworld();
if (rp.length() != 0) {
SwingUtilities.invokeLater(new Runnable() {
Install i = new Install();
public void run() {
i.setlptext("exporting resource pack resources.");
}
});
ExportResource("/" + rp,true);
SwingUtilities.invokeLater(new Runnable() {
Install i = new Install();
public void run() {
i.setlptext("Copying resource pack to profile folder");
}
});
copypack();
}
if (otxt.length() != 0) {
SwingUtilities.invokeLater(new Runnable() {
Install i = new Install();
public void run() {
i.setlptext("Setting correct options.");
}
});
ExportResource("/" + otxt,false);
}
} catch (Exception e) {
e.printStackTrace();
}
SwingUtilities.invokeLater(new Runnable() {
Install i = new Install();
public void run() {
i.setlptext("Getting temporary information.");
}
});
if(temp.isDirectory() && temp.exists()) {
try {
SwingUtilities.invokeLater(new Runnable() {
Install i = new Install();
public void run() {
i.setlptext("Deleting temporary information.");
}
});
delete(temp);
} catch (IOException e) {
SwingUtilities.invokeLater(new Runnable() {
Install i = new Install();
public void run() {
i.setlptext("FAILED DELETING TEMPORARY INFORMATION!");
}
});
e.printStackTrace();
}
};
SwingUtilities.invokeLater(new Runnable() {
Install i = new Install();
public void run() {
i.setlptext("Creating profile.");
}
});
setjson();
SwingUtilities.invokeLater(new Runnable() {
Install i = new Install();
public void run() {
i.setlptext("Map has succesfully installed!");
}
});
}
//************************************************************
public String getmc() {
//Windows
if(System.getProperty("os.name").toLowerCase().contains("windows"))
{
return System.getenv("APPDATA") + "\\.minecraft";
}
//Mac
if(System.getProperty("os.name").toLowerCase().contains("mac os x"))
{
return System.getProperty("user.home") + "/Library/Application Support/minecraft";
}
//Linux(hopefully)
if(System.getProperty("os.name").toLowerCase().contains("linux"))
{
return System.getProperty("user.home") + "/.minecraft";
}
return null;
}
@SuppressWarnings("unchecked")
public void setjson() {
JSONParser parser = new JSONParser();
Object obj;
try {
String mapversion = v;
String mapname = pn;
String mapdir = appdata() + File.separator + pn;
mapdir = mapdir.replace("\\","\\\\");
obj = parser.parse(new FileReader(getmc() + File.separator + "launcher_profiles.json"));
if(obj.toString().length() != 0) {
JSONObject jsonObject = (JSONObject) obj;
JSONObject profiles = (JSONObject) jsonObject.get("profiles");
JSONObject map;
map = new JSONObject();
map.put("name", mapname);
map.put("lastVersionId", mapversion);
map.put("gameDir", mapdir);
profiles.put(mapname, map);
jsonObject.put("profiles",profiles);
jsonObject.remove("selectedProfile");
jsonObject.put("selectedProfile", mapname);
System.out.println(jsonObject.toJSONString());
try (FileWriter file = new FileWriter(getmc() + File.separator + "launcher_profiles.json")) {
File f = new File(getmc() + File.separator + "launcher_profiles.json");
f.createNewFile();
file.write(jsonObject.toJSONString());
}
} else {
JOptionPane.showMessageDialog(null, "Your profile list is empty. run the minecraft launcher to fix this issue.");
}
} catch (FileNotFoundException e) {
JOptionPane.showMessageDialog(null, "You must have launched minecraft at least once!");
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (ParseException e) {
e.printStackTrace();
}
}
public boolean checkprofile(String jsonpn) {
JSONParser parser = new JSONParser();
Object obj;
try {
String mapdir = appdata() + File.separator + pn;
mapdir = mapdir.replace("\\","\\\\");
obj = parser.parse(new FileReader(getmc() + File.separator + "launcher_profiles.json"));
if(obj.toString().length() != 0) {
JSONObject jsonObject = (JSONObject) obj;
JSONObject profiles = (JSONObject) jsonObject.get("profiles");
if (profiles.get(jsonpn) != null) {
return false;
} else {
return true;
}
} else {
JOptionPane.showMessageDialog(null, "Your profile list is empty. run the minecraft launcher to fix this issue.");
}
} catch (FileNotFoundException e) {
JOptionPane.showMessageDialog(null, "You must have launched minecraft at least once!");
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (ParseException e) {
e.printStackTrace();
}
return false;
}
public void setvar() {
st = appdata() + File.separator + pn + File.separator + "options.txt";
}
//SET OPTIONS RESOURCEPACK
String st;
public String appdata() {
if(System.getProperty("os.name").toLowerCase().contains("windows"))
{
return System.getenv("APPDATA");
}
if(System.getProperty("os.name").toLowerCase().contains("mac os x"))
{
return System.getProperty("user.home") + "/Library/Application Support";
}
//(hopefully)
if(System.getProperty("os.name").toLowerCase().contains("linux"))
{
return System.getProperty("user.home") + "";
}
return null;
}
public void read() throws FileNotFoundException, IOException
{
InputStream in = this.getClass().getResourceAsStream("/info.txt");
BufferedReader reader = new BufferedReader(new InputStreamReader(in));
StringBuilder out = new StringBuilder();
String line;
while ((line = reader.readLine()) != null) {
if(line.trim().contains("v:")) {
v = line.replace("v:", "");
}
if(line.trim().contains("wf:")) {
wf = line.replace("wf:", "");
}
if(line.trim().contains("rp:")) {
rp = line.replace("rp:", "");
}
if(line.trim().contains("otxt:")) {
otxt = line.replace("otxt:", "");
}
if(line.trim().contains("pn:")) {
testprofile(line.replace("pn:", ""));
}
out.append(line);
System.out.println(line);
}
System.out.println(out.toString());
reader.close();
in.close();
}
public boolean testprofile(String pnf) {
if (!checkprofile(pnf)) {
pnf = pnf + "-";
}
File folder = new File(appdata()+File.separator+pnf);
if(folder.exists()) {
if (testprofile(pnf + "-")) {
return true;
}
} else {
pn = pnf;
return true;
}
return false;
}
public static void copyFolder(File source, File destination)
{
if (source.isDirectory())
{
if (!destination.exists())
{
destination.mkdirs();
}
String files[] = source.list();
for (String file : files)
{
File srcFile = new File(source, file);
File destFile = new File(destination, file);
copyFolder(srcFile, destFile);
}
}
else
{
InputStream in = null;
OutputStream out = null;
try
{
in = new FileInputStream(source);
out = new FileOutputStream(destination);
byte[] buffer = new byte[1024];
int length;
while ((length = in.read(buffer)) > 0)
{
out.write(buffer, 0, length);
}
}
catch (Exception e)
{
try
{
in.close();
}
catch (IOException e1)
{
e1.printStackTrace();
}
try
{
out.close();
}
catch (IOException e1)
{
e1.printStackTrace();
}
}
try
{
in.close();
}
catch (IOException e1)
{
e1.printStackTrace();
}
try
{
out.close();
}
catch (IOException e1)
{
e1.printStackTrace();
}
try
{
in.close();
in = null;
out.flush();
out.close();
out = null;
System.gc();
}
catch (IOException e)
{
e.printStackTrace();
}
}
}
private static File traverse(File dir, String name) {
if (dir.isDirectory()) {
String[] children = dir.list();
for (int i = 0; children != null && i < children.length; i++) {
File tmp = traverse(new File(dir, children[i]),name.trim());
if( tmp != null ) {
return tmp;
}
}
}
if (dir.isFile()) {
if (dir.getName().trim().equalsIgnoreCase(name.trim())) {
return dir;
}
}
return null;
}
public void copyworld() {
//extract zip
System.out.println(wftemp.getAbsolutePath());
String wfpath = appdata()+ File.separator+pn+File.separator+"temp"+File.separator+wf;
try {
openZipFile(wfpath,wftemp.getAbsolutePath().toString());
} catch (IOException e) {
e.printStackTrace();
}
//search for level.dat
File leveldat = traverse(wftemp,"level.dat");
File dir = new File(appdata()+ File.separator+pn+File.separator+"saves"+File.separator+leveldat.getParentFile().getName());
dir.mkdirs();
//copy to world folder
copyFolder(leveldat.getParentFile(),dir);
}
public void copypack() {
//extract zip
String rppath = appdata()+ File.separator+pn+File.separator+"temp"+File.separator+rp;
try {
openZipFile(rppath,rptemp.getAbsolutePath().toString());
} catch (IOException e) {
e.printStackTrace();
}
//search for level.dat
File leveldat = traverse(rptemp,"pack.mcmeta");
//copy to world folder
File dir = new File(appdata()+ File.separator+pn+File.separator+"resourcepacks"+File.separator+leveldat.getParentFile().getName());
dir.mkdirs();
copyFolder(leveldat.getParentFile(),dir);
}
File rptemp;
File wftemp;
File temp;
public void createfilesystem() {
File saves = new File(appdata()+ File.separator+pn+File.separator+"saves");
File resourcepacks = new File(appdata()+ File.separator+pn+File.separator+"resourcepacks");
saves.mkdirs();
temp = new File(appdata()+ File.separator+pn+File.separator+"temp");
wftemp = new File(appdata()+ File.separator+pn+File.separator+"temp"+File.separator+wf.replace(".zip", ""));
resourcepacks.mkdirs();
wftemp.mkdirs();
if (rp.length() != 0) {
String randompath = rp.substring(0, rp.length() - 4);
rptemp = new File(appdata()+ File.separator+pn+File.separator+"temp"+File.separator+randompath);
if (rptemp.mkdirs()) {
System.out.println("COULDNT CREATE DIR OF RESOURCEPACK");
System.out.println(rptemp.getAbsolutePath());
if(rptemp.isDirectory()) {
System.out.println("true");
} else {
System.out.println("false");
}
if(rptemp.canWrite()) {
System.out.println("true");
} else {
System.out.println("false");
}
}
}
}
@SuppressWarnings("resource")
public void openZipFile(String zipFilename, String destinationDirname) throws IOException {
byte[] buffer = new byte[1024];
int bytesRead = 0;
File zipFile = new File(zipFilename);
File destinationDir = new File(destinationDirname);
ZipFile zip = new ZipFile(zipFile);
Enumeration<? extends ZipEntry> zipEntries = zip.entries();
while (zipEntries.hasMoreElements()) {
ZipEntry entry = zipEntries.nextElement();
if (entry.isDirectory()) {
File newDir = new File(destinationDir, entry.getName());
newDir.mkdirs();
} else {
BufferedInputStream inputStream = new BufferedInputStream(zip.getInputStream(entry));
File outputFile = new File(destinationDir, entry.getName());
BufferedOutputStream outputStream = new BufferedOutputStream(new FileOutputStream(outputFile));
while ((bytesRead = inputStream.read(buffer)) != -1) {
outputStream.write(buffer, 0, bytesRead);
}
try {
inputStream.close();
outputStream.close();
} finally {
try
{
inputStream.close();
inputStream = null;
outputStream.flush();
outputStream.close();
outputStream = null;
System.gc();
}
catch (IOException e)
{
e.printStackTrace();
}
}
}
}
}
public void ExportResource(String resourceName, boolean temp) throws Exception {
InputStream stream = null;
OutputStream resStreamOut = null;
String path = "";
if (temp) {
path = File.separator + "temp";
} else {
path = "";
}
try {
stream = this.getClass().getResourceAsStream(resourceName);
if(stream == null) {
throw new Exception("Cannot get resource \"" + resourceName + "\" from Jar file.");
}
int readBytes;
byte[] buffer = new byte[4096];
resStreamOut = new FileOutputStream(appdata() + File.separator + pn + path + resourceName);
while ((readBytes = stream.read(buffer)) > 0) {
resStreamOut.write(buffer, 0, readBytes);
}
} catch (Exception ex) {
throw ex;
} finally {
stream.close();
resStreamOut.close();
}
stream.close();
resStreamOut.close();
}
public static void delete(File file)
throws IOException{
if(file.isDirectory()){
//directory is empty, then delete it
if(file.list().length==0){
if(file.delete()) {
System.out.println("Directory is deleted : "
+ file.getAbsolutePath());
}else {
System.out.println("FAILED TO DELETE");
}
}else{
//list all the directory contents
String files[] = file.list();
for (String temp : files) {
//construct the file structure
File fileDelete = new File(file, temp);
//recursive delete
delete(fileDelete);
}
//check the directory again, if empty then delete it
if(file.list().length==0){
file.delete();
System.out.println("Directory is deleted : "
+ file.getAbsolutePath());
}
}
}else{
//if file, then delete it
file.delete();
System.out.println("File is deleted : " + file.getAbsolutePath());
}
}
@Override
protected Integer doInBackground() throws Exception {
installb();
return null;
}
}
这是错误：
Exception in thread "AWT-EventQueue-0" java.lang.NoClassDefFoundError: Task$1
at Task.installb(Task.java:38)
at Install.actionPerformed(Install.java:125)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2348)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
at java.awt.Component.processMouseEvent(Component.java:6535)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3324)
at java.awt.Component.processEvent(Component.java:6300)
at java.awt.Container.processEvent(Container.java:2236)
at java.awt.Component.dispatchEventImpl(Component.java:4891)
at java.awt.Container.dispatchEventImpl(Container.java:2294)
at java.awt.Component.dispatchEvent(Component.java:4713)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4888)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4525)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4466)
at java.awt.Container.dispatchEventImpl(Container.java:2280)
at java.awt.Window.dispatchEventImpl(Window.java:2750)
at java.awt.Component.dispatchEvent(Component.java:4713)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
at java.awt.EventQueue.access$500(EventQueue.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:709)
at java.awt.EventQueue$3.run(EventQueue.java:703)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:86)
at java.awt.EventQueue$4.run(EventQueue.java:731)
at java.awt.EventQueue$4.run(EventQueue.java:729)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)
Caused by: java.lang.ClassNotFoundException: Task$1
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 38 more
Exception in thread "AWT-EventQueue-0" java.lang.NoClassDefFoundError: Task$1
at Task.installb(Task.java:38)
at Install.actionPerformed(Install.java:125)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2348)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)