流读取Properties文件/Joda-time时间与字符串转换/POJO与VO/FTP上传服务

一、流读取Properties文件

注意其中的静态块的使用，可以用来初始化。

public class PropertiesUtil {

    private static Logger logger = LoggerFactory.getLogger(PropertiesUtil.class);

    private static Properties props = null;

    static {
        String fileName = "mmall.properties";
        props = new Properties();
        try {
            props.load(new InputStreamReader(PropertiesUtil.class.getResourceAsStream(fileName)));
        } catch (IOException e) {
            logger.error("配置文件读取异常", e);
        }
    }

    public static String getProperty(String key){
        String value = props.getProperty(key);
        if (value == null){
            return null;
        }
        return value.trim();
    }

    public static String getProperty(String key, String defaultValue){
        String value = props.getProperty(key);
        if (value == null){
            return defaultValue;
        }
        return value.trim();
    }

}

二、Joda-time的时间与字符串之间的转换

public class DateTimeUtil {

    private static final String STANDARD_FORMAT = "yyyy-MM-dd HH:mm:ss";

    //str > date
    public static Date strToDate(String dateTimeStr){
        DateTimeFormatter dateTimeFormat = DateTimeFormat.forPattern(STANDARD_FORMAT);
        DateTime dateTime = dateTimeFormat.parseDateTime(dateTimeStr);
        return dateTime.toDate();
    }

    public static Date strToDate(String dateTimeStr, String formatStr){
        DateTimeFormatter dateTimeFormat = DateTimeFormat.forPattern(formatStr);
        DateTime dateTime = dateTimeFormat.parseDateTime(dateTimeStr);
        return dateTime.toDate();
    }

    //date > str
    public static String dateToStr(Date date){
        if (date == null){
            return null;
        }
        DateTime dateTime = new DateTime(date);
        return dateTime.toString(STANDARD_FORMAT);
    }

    public static String dateToStr(Date date, String formatStr){
        if (date == null){
            return null;
        }
        DateTime dateTime = new DateTime(date);
        return dateTime.toString(formatStr);
    }

}

三、POJO与VO转换

POJO对象中有些字段值我们可能不需要，VO就是对POJO进一步加工，最后我们需要的是VO对象。

POJO:

package com.mmall.pojo;

import java.math.BigDecimal;
import java.util.Date;

public class Product {
    private Integer id;

    private Integer categoryId;

    private String name;

    private String subtitle;

    private String mainImage;

    private String subImages;

    private String detail;

    private BigDecimal price;

    private Integer stock;

    private Integer status;

    private Date createTime;

    private Date updateTime;

    public Product(Integer id, Integer categoryId, String name, String subtitle, String mainImage, String subImages, String detail, BigDecimal price, Integer stock, Integer status, Date createTime, Date updateTime) {
        this.id = id;
        this.categoryId = categoryId;
        this.name = name;
        this.subtitle = subtitle;
        this.mainImage = mainImage;
        this.subImages = subImages;
        this.detail = detail;
        this.price = price;
        this.stock = stock;
        this.status = status;
        this.createTime = createTime;
        this.updateTime = updateTime;
    }

    public Product() {
        super();
    }

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public Integer getCategoryId() {
        return categoryId;
    }

    public void setCategoryId(Integer categoryId) {
        this.categoryId = categoryId;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name == null ? null : name.trim();
    }

    public String getSubtitle() {
        return subtitle;
    }

    public void setSubtitle(String subtitle) {
        this.subtitle = subtitle == null ? null : subtitle.trim();
    }

    public String getMainImage() {
        return mainImage;
    }

    public void setMainImage(String mainImage) {
        this.mainImage = mainImage == null ? null : mainImage.trim();
    }

    public String getSubImages() {
        return subImages;
    }

    public void setSubImages(String subImages) {
        this.subImages = subImages == null ? null : subImages.trim();
    }

    public String getDetail() {
        return detail;
    }

    public void setDetail(String detail) {
        this.detail = detail == null ? null : detail.trim();
    }

    public BigDecimal getPrice() {
        return price;
    }

    public void setPrice(BigDecimal price) {
        this.price = price;
    }

    public Integer getStock() {
        return stock;
    }

    public void setStock(Integer stock) {
        this.stock = stock;
    }

    public Integer getStatus() {
        return status;
    }

    public void setStatus(Integer status) {
        this.status = status;
    }

    public Date getCreateTime() {
        return createTime;
    }

    public void setCreateTime(Date createTime) {
        this.createTime = createTime;
    }

    public Date getUpdateTime() {
        return updateTime;
    }

    public void setUpdateTime(Date updateTime) {
        this.updateTime = updateTime;
    }
}

VO:

package com.mmall.vo;

import java.math.BigDecimal;
import java.util.Date;

/**
 * @author GenshenWang.nomico
 * @date 2018/4/10.
 */
public class ProductDetailVo {
    private Integer id;

    private Integer categoryId;

    private String name;

    private String subtitle;

    private String mainImage;

    private String subImages;

    private String detail;

    private BigDecimal price;

    private Integer stock;

    private Integer status;

    private String createTime;

    private String updateTime;

    //图片服务器URL前缀
    private String imageHost;
    //父分类
    private Integer parentCategoryId;

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public Integer getCategoryId() {
        return categoryId;
    }

    public void setCategoryId(Integer categoryId) {
        this.categoryId = categoryId;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getSubtitle() {
        return subtitle;
    }

    public void setSubtitle(String subtitle) {
        this.subtitle = subtitle;
    }

    public String getMainImage() {
        return mainImage;
    }

    public void setMainImage(String mainImage) {
        this.mainImage = mainImage;
    }

    public String getSubImages() {
        return subImages;
    }

    public void setSubImages(String subImages) {
        this.subImages = subImages;
    }

    public String getDetail() {
        return detail;
    }

    public void setDetail(String detail) {
        this.detail = detail;
    }

    public BigDecimal getPrice() {
        return price;
    }

    public void setPrice(BigDecimal price) {
        this.price = price;
    }

    public Integer getStock() {
        return stock;
    }

    public void setStock(Integer stock) {
        this.stock = stock;
    }

    public Integer getStatus() {
        return status;
    }

    public void setStatus(Integer status) {
        this.status = status;
    }

    public String getCreateTime() {
        return createTime;
    }

    public void setCreateTime(String createTime) {
        this.createTime = createTime;
    }

    public String getUpdateTime() {
        return updateTime;
    }

    public void setUpdateTime(String updateTime) {
        this.updateTime = updateTime;
    }

    public String getImageHost() {
        return imageHost;
    }

    public void setImageHost(String imageHost) {
        this.imageHost = imageHost;
    }

    public Integer getParentCategoryId() {
        return parentCategoryId;
    }

    public void setParentCategoryId(Integer parentCategoryId) {
        this.parentCategoryId = parentCategoryId;
    }
}

package com.mmall.vo;

import java.math.BigDecimal;

/**
 * @author GenshenWang.nomico
 * @date 2018/4/10.
 */
public class ProductListVo {
    private Integer id;
    private Integer categoryId;
    private String name;
    private String mainImage;
    private Integer status;
    private BigDecimal price;
    private String subTitle;
    private String imageHost;

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public Integer getCategoryId() {
        return categoryId;
    }

    public void setCategoryId(Integer categoryId) {
        this.categoryId = categoryId;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getMainImage() {
        return mainImage;
    }

    public void setMainImage(String mainImage) {
        this.mainImage = mainImage;
    }

    public Integer getStatus() {
        return status;
    }

    public void setStatus(Integer status) {
        this.status = status;
    }

    public BigDecimal getPrice() {
        return price;
    }

    public void setPrice(BigDecimal price) {
        this.price = price;
    }

    public String getImageHost() {
        return imageHost;
    }

    public void setImageHost(String imageHost) {
        this.imageHost = imageHost;
    }

    public String getSubTitle() {
        return subTitle;
    }

    public void setSubTitle(String subTitle) {
        this.subTitle = subTitle;
    }
}

四、FTPServer上传

package com.mmall.util;

import org.apache.commons.net.ftp.FTPClient;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.List;

/**
 * @author GenshenWang.nomico
 * @date 2018/4/11.
 */
public class FTPUtill {

    private static final Logger logger = LoggerFactory.getLogger(FTPUtill.class);

    //todo FTP服务器未配置
    private static String ftpIp = PropertiesUtil.getProperty("ftp.server.ip");
    private static int ftpPort = 21;
    private static String ftpUser = PropertiesUtil.getProperty("mmallftp");
    private static String ftpPass = PropertiesUtil.getProperty("ftppassword");

    private String ip;
    private int port;
    private String user;
    private String pwd;
    private FTPClient ftpClient;

    public static Logger getLogger() {
        return logger;
    }

    public static String getFtpIp() {
        return ftpIp;
    }

    public static void setFtpIp(String ftpIp) {
        FTPUtill.ftpIp = ftpIp;
    }

    public static int getFtpPort() {
        return ftpPort;
    }

    public static void setFtpPort(int ftpPort) {
        FTPUtill.ftpPort = ftpPort;
    }

    public static String getFtpUser() {
        return ftpUser;
    }

    public static void setFtpUser(String ftpUser) {
        FTPUtill.ftpUser = ftpUser;
    }

    public static String getFtpPass() {
        return ftpPass;
    }

    public static void setFtpPass(String ftpPass) {
        FTPUtill.ftpPass = ftpPass;
    }

    public String getIp() {
        return ip;
    }

    public void setIp(String ip) {
        this.ip = ip;
    }

    public int getPort() {
        return port;
    }

    public void setPort(int port) {
        this.port = port;
    }

    public String getUser() {
        return user;
    }

    public void setUser(String user) {
        this.user = user;
    }

    public String getPwd() {
        return pwd;
    }

    public void setPwd(String pwd) {
        this.pwd = pwd;
    }

    public FTPClient getFtpClient() {
        return ftpClient;
    }

    public void setFtpClient(FTPClient ftpClient) {
        this.ftpClient = ftpClient;
    }

    public FTPUtill(String ip, int port, String user, String pass){
        this.ip = ip;
        this.port = port;
        this.user = user;
        this.pwd = pass;
    }

    private boolean connectFTPServer(String ip, int port, String user, String pass){
        boolean connectSuccess = false;
        ftpClient = new FTPClient();
        try {
            ftpClient.connect(ip);
            connectSuccess = ftpClient.login(user, pass);
        } catch (IOException e) {
            logger.error("连接FTP服务器异常", e);
        }
        return connectSuccess;
    }

    public static boolean uploadFile(List<File> fileList){
        FTPUtill ftpUtill = new FTPUtill(ftpIp, ftpPort, ftpUser, ftpPass);
        logger.info("开始连接ftp服务器");
        boolean result = ftpUtill.uploadFile("img", fileList);
        logger.info("结束上传,上传结果:{}");
        return result;
    }

    private boolean uploadFile(String remotePath, List<File> fileList){
        boolean uploaded = true;
        FileInputStream fis = null;
        boolean isConnectSuccess = connectFTPServer(this.ip, this.port, this.user, this.pwd);
        if (isConnectSuccess){
            try {
                ftpClient.changeWorkingDirectory(remotePath);
                ftpClient.setBufferSize(1024);
                ftpClient.setControlEncoding("UTF-8");
                ftpClient.setFileType(FTPClient.BINARY_FILE_TYPE);
                ftpClient.enterLocalPassiveMode();
                for (File file : fileList){
                    fis = new FileInputStream(file);
                    ftpClient.storeFile(file.getName(), fis);
                }
            } catch (IOException e) {
                logger.error("上传文件异常", e);
                uploaded = false;
            }

        }
        return uploaded;
    }
}