使用 java -cp Main.jar main.Main，-jar 用于捆绑的 jars清单说明将哪个类用作主类.您对 -cp(以及在您的 ant 构建文件中)所做的只是将它放在主路径上:您将 main.Main 指定为主类明确地，不在清单中.

Use java -cp Main.jar main.Main, -jar is for bundled jars with a Manifest saying which class is to be used as the main class. What you're doing with -cp (and within your ant build file) is just putting it on the main path: you're specifying main.Main as the main class explicitly, not within a manifest.

您还应该将其他 jar 放在类路径上(例如 -cp lib/example1.jar:lib/example2.jar:Main.jar).根据与 **/*.jar 匹配的内容，可能有很多.

You should also put the other jars on the classpath (e.g. -cp lib/example1.jar:lib/example2.jar:Main.jar). Depending on what matches **/*.jar, there may be a number of them.