浅谈两个jar包中包含完全相同的包名和类名的加载问题

<plugin>    <artifactId>maven-assembly-plugin</artifactId>    <version>2.4</version>    <configuration>     <descriptorRefs>      <descriptorRef>jar-with-dependencies</descriptorRef>     </descriptorRefs>     <archive>      <manifest>       <mainClass>Main.Main</mainClass>      </manifest>     </archive>    </configuration>    <executions>     <execution>      <id>make-assembly</id>      <phase>package</phase>      <goals>       <goal>single</goal>      </goals>     </execution>    </executions>   </plugin>配置了一个manifest标签来配置Main函数的入口。然后通过如下指令来实现打包。 mvn assembly:assembly

protected Class<?> loadClass(String name, boolean resolve)  throws ClassNotFoundException {  synchronized (getClassLoadingLock(name)) {   // First, check if the class has already been loaded   Class<?> c = findLoadedClass(name);   if (c == null) {    long t0 = System.nanoTime();    try {     if (parent != null) {      c = parent.loadClass(name, false);     } else {      c = findBootstrapClassOrNull(name);     }    } catch (ClassNotFoundException e) {     // ClassNotFoundException thrown if class not found     // from the non-null parent class loader    }     if (c == null) {     // If still not found, then invoke findClass in order     // to find the class.     long t1 = System.nanoTime();     c = findClass(name);      // this is the defining class loader; record the stats     sun.misc.PerfCounter.getParentDelegationTime().addTime(t1 - t0);     sun.misc.PerfCounter.getFindClassTime().addElapsedTimeFrom(t1);     sun.misc.PerfCounter.getFindClasses().increment();    }   }   if (resolve) {    resolveClass(c);   }   return c;  } }