当我尝试执行下面的java类（AuctionExample1.java）时，我得到了以下错误："选择不包含主类型"
这是java类：
package org.cloudbus.cloudsim.examples.auction;
/**
* A simple example showing how to create a bidder datacenter and a bidder broker
* and start the auction.
* No VM is specified at all because no one wins he auction.
*
* Created on 2011/9/9
*/
import java.text.DecimalFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.LinkedList;
import java.util.List;
import org.cloudbus.cloudsim.Cloudlet;
import org.cloudbus.cloudsim.CloudletSchedulerTimeShared;
import org.cloudbus.cloudsim.DatacenterCharacteristics;
import org.cloudbus.cloudsim.Host;
import org.cloudbus.cloudsim.Log;
import org.cloudbus.cloudsim.Pe;
import org.cloudbus.cloudsim.Storage;
import org.cloudbus.cloudsim.UtilizationModel;
import org.cloudbus.cloudsim.UtilizationModelFull;
import org.cloudbus.cloudsim.Vm;
import org.cloudbus.cloudsim.VmAllocationPolicySimple;
import org.cloudbus.cloudsim.VmSchedulerTimeShared;
import org.cloudbus.cloudsim.auction.auctioneer.Auctioneer;
import org.cloudbus.cloudsim.auction.bid.DatacenterBid;
import org.cloudbus.cloudsim.auction.bid.DatacenterBrokerBid;
import org.cloudbus.cloudsim.auction.bidder.BidderDatacenter;
import org.cloudbus.cloudsim.auction.bidder.BidderDatacenterBroker;
import org.cloudbus.cloudsim.auction.vm.DatacenterAbstractVm;
import org.cloudbus.cloudsim.auction.vm.VmCharacteristics;
import org.cloudbus.cloudsim.core.CloudSim;
import org.cloudbus.cloudsim.provisioners.BwProvisionerSimple;
import org.cloudbus.cloudsim.provisioners.PeProvisionerSimple;
import org.cloudbus.cloudsim.provisioners.RamProvisionerSimple;
public class AuctionExample1 {
/** The cloudlet list. */
private static List<Cloudlet> cloudletList;
/** The vmlist. */
private static List<Vm> vmlist;
/**
* Creates main() to run this example.
*
* @param args the args
*/
public static void main(String[] args) {
Log.printLine("Starting AuctionExample1...");
try {
// First step: Initialize the CloudSim package. It should be called
// before creating any entities.
int num_user = 1; // number of cloud users
Calendar calendar = Calendar.getInstance();
boolean trace_flag = false; // mean trace events
// Initialize the CloudSim library
CloudSim.init(num_user, calendar, trace_flag);
Auctioneer.initAuctioneer();
// Second step: Create Datacenters
// Datacenters are the resource providers in CloudSim. We need at
// list one of them to run a CloudSim simulation
BidderDatacenter datacenter0 = createDatacenter("Datacenter_0");
// Third step: Create Broker
BidderDatacenterBroker broker = createBroker();
int brokerId = broker.getId();
// Fourth step: Create one virtual machine
vmlist = new ArrayList<Vm>();
// VM description
int vmid = 0;
int mips = 1000; /*Youness: VM need to be allocated a share of
processing power on Datacenter's hosts.*/
long size = 10000; // image size (MB) (Youness: virtual machine's image size)
int ram = 512; // vm memory (MB)
long bw = 1000;
int pesNumber = 1; // number of cpus
String vmm = "Xen"; // VMM name
// create VM
Vm vm = new Vm(vmid, brokerId, mips, pesNumber, ram, bw, size, vmm, new CloudletSchedulerTimeShared());
// add the VM to the vmList
vmlist.add(vm);
// Fifth step: Create one Cloudlet
cloudletList = new ArrayList<Cloudlet>();
// Cloudlet properties
int id = 0;
long length = 400000; //MI cloudletLength
long fileSize = 300; //cloudletFileSize
long outputSize = 300; //cloudletOutputSize
UtilizationModel utilizationModel = new UtilizationModelFull();
Cloudlet cloudlet = new Cloudlet(id, length, pesNumber, fileSize, outputSize, utilizationModel, utilizationModel, utilizationModel);
cloudlet.setUserId(brokerId);
cloudlet.setVmId(vmid);//Youness: Bind cloudLet to a VM. If you do not do this, application assigns the first created VM for this cloudlet
// add the cloudlet to the list
cloudletList.add(cloudlet);
// submit cloudlet list to the broker
broker.submitCloudletList(cloudletList);
DatacenterBrokerBid brokerBid = new DatacenterBrokerBid(broker.getId(), 0.0035);
brokerBid.addVM(vm, 1);
broker.submitBid(brokerBid);
// Sixth step: Starts the simulation
CloudSim.startSimulation();
CloudSim.stopSimulation();
//Final step: Print results when simulation is over
List<Cloudlet> newList = broker.getCloudletReceivedList();
printCloudletList(newList);
// Print the debt of each user to each datacenter
datacenter0.printDebts();
Log.printLine("AuctionExample1 finished!");
} catch (Exception e) {
e.printStackTrace();
Log.printLine("Unwanted errors happen");
}
}
/**
* Creates the datacenter.
*
* @param name the name
*
* @return the datacenter
*/
private static BidderDatacenter createDatacenter(String name) {
// Here are the steps needed to create a PowerDatacenter:
// 1. We need to create a list to store
// our machine
List<Host> hostList = new ArrayList<Host>();
// 2. A Machine contains one or more PEs or CPUs/Cores.
// In this example, it will have only one core.
List<Pe> peList = new ArrayList<Pe>();
int mips = 1000;
// 3. Create PEs and add these into a list.
peList.add(new Pe(0, new PeProvisionerSimple(mips))); // need to store Pe id and MIPS Rating
// 4. Create Host with its id and list of PEs and add them to the list
// of machines
int hostId = 0;
int ram = 2048; // host memory (MB)
long storage = 1000000; // host storage
int bw = 10000;
Host host = new Host(
hostId,
new RamProvisionerSimple(ram),
new BwProvisionerSimple(bw),
storage,
peList,
new VmSchedulerTimeShared(peList)
);
hostList.add(host); // This is our machine
// 5. Create a DatacenterCharacteristics object that stores the
// properties of a data center: architecture, OS, list of
// Machines, allocation policy: time- or space-shared, time zone
// and its price (G$/Pe time unit).
String arch = "x86"; // system architecture
String os = "Linux"; // operating system
String vmm = "Xen";
double time_zone = 10.0; // time zone this resource located
double cost = 3.0; // the cost of using processing in this resource
double costPerMem = 0.05; // the cost of using memory in this resource
double costPerStorage = 0.001; // the cost of using storage in this
// resource
double costPerBw = 0.0; // the cost of using bw in this resource
LinkedList<Storage> storageList = new LinkedList<Storage>(); // we are not adding SAN
// devices by now
DatacenterCharacteristics characteristics = new DatacenterCharacteristics(
arch, os, vmm, hostList, time_zone, cost, costPerMem,
costPerStorage, costPerBw);
// 6. Finally, we need to create a PowerDatacenter object.
BidderDatacenter datacenter = null;
try {
datacenter = new BidderDatacenter(name, characteristics, new VmAllocationPolicySimple(hostList), storageList, 0);
} catch (Exception e) {
e.printStackTrace();
}
//TODO check if VM fits the host
VmCharacteristics vmCharacteristics = new VmCharacteristics(
arch, os, vmm, time_zone, cost, costPerMem,
costPerStorage, costPerBw);
DatacenterAbstractVm vm = new DatacenterAbstractVm(1000, 1, 512, 1000, 1000, vmCharacteristics);
DatacenterBid bid = new DatacenterBid(datacenter.getId());
bid.addVM(vm, 1);
datacenter.submitBid(bid);
return datacenter;
}
// We strongly encourage users to develop their own broker policies, to
// submit vms and cloudlets according
// to the specific rules of the simulated scenario
/**
* Creates the broker.
*
* @return the datacenter broker
*/
private static BidderDatacenterBroker createBroker() {
BidderDatacenterBroker broker = null;
try {
broker = new BidderDatacenterBroker("Broker");
} catch (Exception e) {
e.printStackTrace();
return null;
}
return broker;
}
/**
* Prints the Cloudlet objects.
*
* @param list list of Cloudlets
*/
private static void printCloudletList(List<Cloudlet> list) {
int size = list.size();
Cloudlet cloudlet;
String indent = " ";
Log.printLine();
Log.printLine("========== OUTPUT ==========");
Log.printLine("Cloudlet ID" + indent + "STATUS" + indent
+ "Data center ID" + indent + "VM ID" + indent + "Time" + indent
+ "Start Time" + indent + "Finish Time");
DecimalFormat dft = new DecimalFormat("###.##");
for (int i = 0; i < size; i++) {
cloudlet = list.get(i);
Log.print(indent + cloudlet.getCloudletId() + indent + indent);
if (cloudlet.getCloudletStatus() == Cloudlet.SUCCESS) {
Log.print("SUCCESS");
Log.printLine(indent + indent + cloudlet.getResourceId()
+ indent + indent + indent + cloudlet.getVmId()
+ indent + indent
+ dft.format(cloudlet.getActualCPUTime()) + indent
+ indent + dft.format(cloudlet.getExecStartTime())
+ indent + indent
+ dft.format(cloudlet.getFinishTime()));
}
}
}
}
我想补充一点，这个项目的结构并没有组成包。以下是项目层次结构的概要描述：
/CloudAuction
/CloudAuction/src
/CloudAuction/src/main
/CloudAuction/src/test
/CloudAuction/src/test/java
/CloudAuction/src/test/java/org.cloudbus.cloudsim.examples.auction
/CloudAuction/src/test/java/org.cloudbus.cloudsim.examples.auction/AuctionExample1.java
/CloudAuction/src/test/java/org.cloudbus.cloudsim.examples.auction/AuctionExample2.java
/CloudAuction/src/test/java/org.cloudbus.cloudsim.examples.auction/AuctionExample3.java
/CloudAuction/src/test/java/org.cloudbus.cloudsim.examples.auction/AuctionExample4.java
/CloudAuction/src/test/java/org.cloudbus.cloudsim.examples.auction/BidderBrokerFactory.java
/CloudAuction/src/test/java/org.cloudbus.cloudsim.examples.auction/BidderDatacenterFactory.java
/CloudAuction/target
/CloudAuction/pom.xml
有人能帮我找到解决这个问题的办法吗？
在src文件夹下，包名必须用文件夹表示。在你的代码中，你有：org.cloudbus.cloudsim.examples.action作为包名，但你的src中没有相同的文件夹，文件夹需要像这样：
src/org/cloudbus/cloudsim/examples/auction/YourClass.java