Log4j PropertyConfigurator.configure()在eclipse中不接受字符串

Question

我有一个奇怪的问题，可能是一些简单的问题，但我已经用谷歌搜索了20分钟，现在还没有解决方案

我正尝试在Eclipse中使用log4j。我下载了最新的zip并添加到我的类路径中。我已经通过复制教程创建了属性文件。属性文件位于我的项目的根文件夹中，名为"log4j.properties“。该文件包含

#define the console appender
log4j.appender.consoleAppender = org.apache.log4j.ConsoleAppender

# now define the layout for the appender
log4j.appender.consoleAppender.layout = org.apache.log4j.PatternLayout
log4j.appender.consoleAppender.layout.ConversionPattern=%-4r [%t] %-5p %c %x - %m%n

# now map our console appender as a root logger, means all log messages will go to this     appender
log4j.rootLogger = DEBUG, consoleAppender

我的类如下所示，eclipse在PropertyConfigurator.configure()行中有以下错误。此行有多个标记-标记""log4j.properties"“上的语法错误，删除此标记-标记上的语法错误，错误的构造

然而，log4j的api显示属性配置器应该接受一个字符串。有什么建议吗？

package org.dnsdojo.ryanhost.GA.MuPlusOne;

import java.util.Random;
import org.apache.log4j.Logger;
import org.apache.log4j.PropertyConfigurator;


public class Genome
{
private static Logger logger = Logger.getLogger(Genome.class);
PropertyConfigurator.configure("log4j.properties");
byte[] genome;
Random rng = new Random();
String genomeString = "";

public Genome ( int stringLength, int motorSet )
{
    genome = new byte[ stringLength * 7 * motorSet]; // stringLength depends on how many bytes you wish to have. For the arpibot this is dependant on the number of sensor readings taken
    for (int i = 0; i < genome.length; i++)
    {
        genome[i] = (byte)rng.nextInt(2);
        genomeString += genome[i];
    }
    logger.debug(genomeString);     
}

public byte[] getGenome()
{
    return genome;
}

public byte[] mutate (float mutationStep)
{
    return genome;                                  //placeholder
}

}

Answer 1

你当前的类块中有PropertyConfigurator.configure，所以编译器会报错。将该语句(以及其他非声明性语句)移动到方法或static初始值设定项块中。