jmete 取配置文件的行数(二)

接上一篇未解决的问题，继续...

beanshell前置处理器貌似因为作用域的问题解决不了，那这个问题怎么解决呢？

jmeter函数，可以自定义函数调用吗？答案是肯定的，下面附上代码：

其中FileRowColContainer为jmeter内部的类，刚好有文件行数的方法直接拿过来用，博友们也可以像上一篇beanshell中那样自己写

package try.jmeter.functions;

import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.Collection;
import java.util.LinkedList;
import java.util.List;

import org.apache.jmeter.engine.util.CompoundVariable;
import org.apache.jmeter.functions.AbstractFunction;
import org.apache.jmeter.functions.FileRowColContainer;
import org.apache.jmeter.functions.InvalidVariableException;
import org.apache.jmeter.samplers.SampleResult;
import org.apache.jmeter.samplers.Sampler;
import org.apache.jmeter.util.JMeterUtils;

public class FileRowCount extends AbstractFunction{
    private Object[] values;
    private FileRowColContainer fc;
    private static final List<String> desc = new LinkedList<String>();

    static
      {
        desc.add(JMeterUtils.getResString("read_file_name"));
      }

    public List<String> getArgumentDesc() {
        // TODO Auto-generated method stub
        return desc;
    }

    public synchronized String execute(SampleResult previousResult, Sampler currentSampler)
            throws InvalidVariableException {
        // TODO Auto-generated method stub
         String myValue = "";
         String fileName = ((CompoundVariable)this.values[0]).execute();
         try {
            fc = new FileRowColContainer(fileName);
            myValue = String.valueOf(fc.getSize());
         } catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return myValue;
    }

    public String getReferenceKey() {
        // TODO Auto-generated method stub
        return "__FileRowCount";
    }

    public synchronized void setParameters(Collection<CompoundVariable> parameters)
            throws InvalidVariableException {
        // TODO Auto-generated method stub
        this.values = parameters.toArray();
        checkParameterCount(parameters, 1);
    }

}

注意事项：

1.包名必须包含.functions

2.继承AbstractFunction，实现抽象方法

3.打包成jar包放到jmeter/lib/ext下

查看调用图：

参数文件中共三行，问题终于解决了~~~