我的项目将在Eclipse中运行没问题，但是当作为jar导出并从命令提示符（java -jar automation.jar）运行时，程序崩溃并给我以下错误：
Exception in thread "main" java.lang.NoClassDefFoundError: autoitx4java/AutoItX
at BuildCustomAction.main(BuildCustomAction.java:66)
Caused by: java.lang.ClassNotFoundException: autoitx4java.AutoItX
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)
... 1 more
...和
Exception in thread "main" java.lang.UnsatisfiedLinkError: Can't load library: C
:\Users\XXXX\Documents\lib\jacob-1.18-M2-x64.dll
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1827)
at java.lang.Runtime.load0(Runtime.java:809)
at java.lang.System.load(System.java:1086)
at com.jacob.com.LibraryLoader.loadJacobLibrary(LibraryLoader.java:151)
at com.jacob.com.JacobObject.<clinit>(JacobObject.java:110)
at autoitx4java.AutoItX.<init>(AutoItX.java:181)
at BuildCustomAction.main(BuildCustomAction.java:66)
这是完整的来源。
import java.io.File;
import autoitx4java.AutoItX;
import com.jacob.com.LibraryLoader;
import java.lang.System;
import java.util.UUID;
import javax.swing.JOptionPane;
public class BuildCustomAction {
public static void main(String[] args) throws InterruptedException {
// Save the user's %HOMEPATH% directory
String homepath = System.getProperty("user.home");
// The plugin directory
// String a = "plugins";
// String a = args[0];
String a = JOptionPane.showInputDialog("The location of your workspace directory in your %HOMEPATH%:");
System.out.println("Workspace: " + homepath + "\\" + a);
// The artifact name
// String b = "myCustomArtifact2";
// String b = args[1];
String b = JOptionPane.showInputDialog("The name of your new artifact, i.e. myCustomArtifact");
System.out.print("Artifact Name: " + b);
File f = new File(homepath +"\\"+ a +"\\" + b);
if (f.exists() && f.isDirectory()) {
System.out.println("\nA project with this artifact name already exists.");
String z = b;
while (b.equals(z)) {
b = JOptionPane.showInputDialog("Please choose a unique name for your new artifact");
System.out.println("Artifact Name: " + b);
}
}
// The group name
// String c ="org.package.name";
// String c = args[2];
String c = JOptionPane.showInputDialog("The name of your group, i.e. org.package.name");
System.out.println("Group Name: " + c);
// Check for 32 or 64 bit Windows
String jacobDllVersionToUse;
if (jvmBitVersion().contains("32")){
jacobDllVersionToUse = "jacob-1.18-M2-x86.dll";
}
else {
jacobDllVersionToUse = "jacob-1.18-M2-x64.dll";
}
File file = new File("lib", jacobDllVersionToUse);
System.setProperty(LibraryLoader.JACOB_DLL_PATH, file.getAbsolutePath());
AutoItX x = new AutoItX();
// Open cmd
x.run("C:\\WINDOWS\\system32\\cmd.exe", "", AutoItX.SW_SHOW);
x.winActivate("C:\\WINDOWS\\system32\\cmd.exe");
x.winWaitActive("C:\\WINDOWS\\system32\\cmd.exe");
// Run archetype creation from %HOMEPATH%\\plugins
sendCommand(x, "cd " + homepath +"\\" + a);
/*sendCommand(x, "cd " + homepath +"\\" + "plugins");*/
// Create the number of projects defined by the user
sendCommand(x, "mvn archetype:generate -DarchetypeCatalog=file://"+ homepath + "/.m2/repository");
sendCommand(x, "1");
Thread.sleep(3000);
UUID uuid = newUUID();
//myGroup
sendCommand(x, c);
/*sendCommand(x, "myNewCustomGroup");*/
//myArtifact
sendCommand(x, b);
/*sendCommand(x, "myNewCustomArtifact");*/
//myGroup
sendCommand(x, c);
/*sendCommand(x, "myNewCustomGroup");*/
//myUUID
sendUUID(x, uuid.toString());
//Confirm project creation
sendCommand(x, "Y");
//Navigate to new project directory
/*sendCommand(x, "cd " + homepath +"\\"+ "plugins" +"\\" + "myNewCustomArtifact");*/
sendCommand(x, "cd " + homepath +"\\"+ a +"\\" + b);
//Confirm project creation
System.out.println("Building project...");
sendCommand(x, "mvn clean install");
// Reset in preparation for next project creation
/*sendCommand(x, "cd " + homepath +"\\" + "plugins");*/
sendCommand(x, "cd " + homepath +"\\" + a);
// Check if Path exists.
/*File f = new File(homepath +"\\"+ "plugins" +"\\" + "myNewArtifact");*/
if (f.exists() && f.isDirectory()) {
generatePOM(a, b, c, homepath, x);
} else {
//The "result_message" output
sendCommand(x, "color 0c");
System.out.println("The project directory was not configured properly. There may be an issue with your %HOMEPATH%. Try providing the full path directly instead.");
}
Thread.sleep(3000);
sendCommand(x, "color 0a");
System.out.println("Great! Your plugin archetype is now ready for use.");
}
@SuppressWarnings("unused")
private static void writeCommand(AutoItX x, String text) {
x.send(text);
}
private static void generatePOM(String a, String b, String c, String homepath, AutoItX x) {
//Navigate to project directory
System.out.println("The project build was successfull.");
sendCommand(x, "cd " + homepath +"\\" + a +"\\" + b + "\\" + b + "-plugin" + "\\target");
// Extract requisite pom.xml
System.out.println("Extracting pom.xml...");
String zipDirectory = homepath +"\\" + a +"\\" + b + "\\" + b + "-plugin" + "\\target\\" + b + "-plugin-1.0.0.jar";
sendCommand(x, "jar -xvf " + zipDirectory);
sendCommand(x, "cd " + homepath +"\\" + a +"\\" + b + "\\" + b + "-plugin" + "\\target\\" + "\\META-INF\\maven\\" + c + "\\" + b + "-plugin");
System.out.println("The directory was located successfully.");
// Copy and move pom.xml
String pluginDirectory = homepath +"\\" + a +"\\" + b + "\\" + b + "-plugin" + "\\target";
sendCommand(x, "copy pom.xml " + pluginDirectory);
sendCommand(x, "cd " + pluginDirectory);
// Rename pom.xml
sendCommand(x, "rename pom.xml " + b + "-plugin-1.0.0.pom");
System.out.println("The project .pom file was generated successfully.");
}
// Returns if the JVM is 32 or 64 bit version
public static String jvmBitVersion(){
return System.getProperty("sun.arch.data.model");
}
private static UUID newUUID() {
UUID uuid = UUID.randomUUID();
return uuid;
}
private static void sendUUID(AutoItX x, String uuid) {
x.send(uuid);
sendEnter(x);
}
private static void sendCommand(AutoItX x, String text) {
x.send(text);
sendEnter(x);
}
private static void sendEnter(AutoItX x) {
x.send("{ENTER}!", false);
}
}
为什么程序在Eclipse中执行得很好但不能作为可运行的JAR执行？
答案 0 :(得分：2)
假设您启动Jar作为
java -jar your_app.jar
然后该库必须位于当前目录下面的目录中
lib\
当代码检查子目录lib中相对于当前路径的库时。
假设在Jar中你有所有需要的库类（jacob，AutoItX4Java）。结构需要
.\your_app.jar
.\lib\jacob-1.18-M2-x64.dll