Question

我正在尝试设置一个简单的rmi服务器

import java.net.MalformedURLException;
import java.rmi.*;
import java.rmi.server.*;

public class EmployeeServer extends UnicastRemoteObject implements Employee{

private String name,id;
private int salary;
private static final long serialVersionUID=1L;

public EmployeeServer(String n,String i,int s) throws RemoteException {
    super();
    name=n;
    id=i;
    salary=s;
}

public String getName() throws RemoteException {
    return name;
}


public String getID() throws RemoteException {
    return id;
}


public int getSalary() throws RemoteException {
    return salary;
}


public int augmentSalary(int howMuch) throws RemoteException {
    if(howMuch>0){
        salary+=howMuch;
    }
    return salary;
}

public static void main(String[] args) throws RemoteException, MalformedURLException, AlreadyBoundException {
    System.setSecurityManager(new SecurityManager());
    EmployeeServer server=new EmployeeServer("Red","0123",5000);
    Naming.rebind("Red", server);
    System.out.println("Server Ready!");
}
}

仅使用此代码我就会收到错误

Exception in thread "main" java.security.AccessControlException: access denied ("java.net.SocketPermission" "127.0.0.1:1099" "connect,resolve")

经过大量的谷歌搜索，我终于写了我的政策文件

grant codeBase "file:/Utenti/Super/workspacenew/PDEsercizioStubSkeleton2.0/bin/EmployeeServer.class" 
{
permission java.net.SocketPermission "127.0.0.1:1099", "connect, resolve";
};

并将其放在我的项目文件夹“PDEsercizioStubSkeleton2.0”中。现在我试图将此策略文件包含在我的jvm运行配置中，并将其放入VM参数中：

java -Djava.security.manager -Djava.security.policy=server.policy

然后它给了我“错误：无法找到或加载主类java”。我发现它只是检查写的第一个单词，因为我用“jaa”修改了“java”并且拼写错误的名字得到了同样的错误。我做错了什么？

Java错误：无法找到或加载主类java

0 个答案: