从web工程的src目录上读取.properties文件

import org.apache.log4j.logger;import java.io.file;import java.io.ioexception;import java.io.inputstream;import java.util.properties;public class ftpurlutil{    /**     * 日志组件     */    private static logger logger = logger.getlogger(ftpurlutil.class.getname());    private static ftpurlutil instance = null;        /**     * 用于存放上传文件的目录     */    private string uploadpath;    /**     * 配置文件名称     */    private string configfilestring = "ftpurl.properties";    /**     * 读取文件后的结果     */    private string exeresult;    /**     * 只允许创建一个实例对象     */    private ftpurlutil()    {    }    /**     * 创建本类的单例     * <p/>     * getinstance(单例)     *     * @return ftpurlutil对象     */    public static ftpurlutil getinstance()    {        if (instance == null)        {            instance = new ftpurlutil();        }        return instance;    }    /**     * 读取配置文件     *     * @return boolean     */    public boolean readconfigfile()    {        //读取配置文件             inputstream inputstream = this.getclass().getclassloader().getresourceasstream(configfilestring);        //读路径出错，换另一种方式读取配置文件        if (null == inputstream)        {            logger.error("read config file failed.");            this.exeresult = "upload_read_config_file_failed";            return false;        }        //读取配置文件中的appid和moduleid        properties p = new properties();        try        {            p.load(inputstream);        }        catch (ioexception e1)        {            logger.error("load config file failed." + e1);            this.exeresult = "upload_load_config_file_failed";            return false;        }        //得到文件路径        this.uploadpath = p.getproperty("path");        //判断文件路径是否存在        try        {            file filepath = new file(this.uploadpath.trim());            if (!filepath.exists())            {                this.exeresult = "upload_file_path_no_exist";                return false;            }        }        catch (exception e)        {            logger.error("read filepath failed." + e);            this.exeresult = "upload_file_path_no_exist";            return false;        }        return true;    }    public string getexeresult()    {        return exeresult;    }    public void setexeresult(string exeresult)    {        this.exeresult = exeresult;    }    public string getuploadpath()    {        return uploadpath;    }    public void setuploadpath(string uploadpath)    {        this.uploadpath = uploadpath;    }}