我在RapidMiner中有一个文本分类过程。它从指定的excel

ssheet读取测试数据并进行分类。我还有一个小型Java应用程序，它正在运行此过程。现在，我想在应用程序中添加文件输入部分，以便每次我都可以从应用程序(而不是RapidMiner)中指定excel文件。有什么提示吗？

这是代码：

import com.rapidminer.RapidMiner;

import com.rapidminer.Process;

import com.rapidminer.example.Attribute;

import com.rapidminer.example.Example;

import com.rapidminer.example.ExampleSet;

import com.rapidminer.operator.IOContainer;

import com.rapidminer.operator.Operator;

import com.rapidminer.operator.OperatorException;

import java.io.File;

import java.io.IOException;

import java.util.Iterator;

import com.rapidminer.operator.io.ExcelExampleSource;

import com.rapidminer.tools.XMLException;

public class Classification {

public static void main(String [] args) throws Exception{

ExampleSet resultSet1 = null;

IOContainer ioInput = null;

IOContainer ioResult;

try {

RapidMiner.setExecutionMode(RapidMiner.ExecutionMode.COMMAND_LINE);

RapidMiner.init();

Process pr = new Process(new File("C:\\Users\\MP-TEST\\Desktop\\Rapid_Test\\Wieder_Model.rmp"));

Operator op = pr.getOperator("Read Excel");

op.setParameter(ExcelExampleSource.PARAMETER_EXCEL_FILE, "C:\\Users\\MP-TEST\\Desktop\\Rapid_Test\\HaendlerRatings_neu.xls");

ioResult = pr.run(ioInput);

if (ioResult.getElementAt(0) instanceof ExampleSet) {

resultSet1 = (ExampleSet)ioResult.getElementAt(0);

for (Example example : resultSet1) {

Iterator allAtts = example.getAttributes().allAttributes();

while(allAtts.hasNext()) {

Attribute a = allAtts.next();

if (a.isNumerical()) {

double value = example.getValue(a);

System.out.println(value);

} else {

String value = example.getValueAsString(a);

System.out.println(value);

}

}

}

}

} catch (IOException | XMLException | OperatorException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

}

这是错误：

Apr 09, 2013 9:06:05 AM com.rapidminer.Process run

INFO: Process C:\Users\MP-TEST\Desktop\Rapid_Test\Wieder_Model.rmp starts

com.rapidminer.operator.UserError: A value for the parameter 'excel_file' must be specified!

at com.rapidminer.operator.nio.model.ExcelResultSetConfiguration.makeDataResultSet(ExcelResultSetConfiguration.java:316)

at com.rapidminer.operator.nio.model.AbstractDataResultSetReader.createExampleSet(AbstractDataResultSetReader.java:127)

at com.rapidminer.operator.io.AbstractExampleSource.read(AbstractExampleSource.java:52)

at com.rapidminer.operator.io.AbstractExampleSource.read(AbstractExampleSource.java:1)

at com.rapidminer.operator.io.AbstractReader.doWork(AbstractReader.java:126)

at com.rapidminer.operator.Operator.execute(Operator.java:855)

at com.rapidminer.operator.execution.SimpleUnitExecutor.execute(SimpleUnitExecutor.java:51)

at com.rapidminer.operator.ExecutionUnit.execute(ExecutionUnit.java:711)

at com.rapidminer.operator.OperatorChain.doWork(OperatorChain.java:379)

at com.rapidminer.operator.Operator.execute(Operator.java:855)

at com.rapidminer.Process.run(Process.java:949)

at com.rapidminer.Process.run(Process.java:873)

at com.rapidminer.Process.run(Process.java:832)

at com.rapidminer.Process.run(Process.java:827)

at Classification.main(Classification.java:29)

最好的祝福

Armen