package com.mfh.comn.fs;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.InputStream;
import java.util.List;
import org.apache.commons.lang3.StringUtils;
import com.alibaba.fastjson.util.Base64;
import com.mfh.comn.ConstantActions;
import com.mfh.comn.bean.Pair;
import com.mfh.comn.utils.FileUtils;
import com.mfh.comn.utils.UuidUtil;
/**
* 接收文件数据时的操作参数
* 文件可能来自于网络、摄像头、录音设备等，支持大文件长时间接收。
* 用于客户端（手机、java客户端）传递文件参数。
* @author zhangyz created on 2012-4-17
* @since Framework 1.0
*/
public class FileItemParam {
public static String DEFAULT_FILEPATH_FIELD = "filePath";//缺省的文件路径字段名
private int operKind;//操作类型
private String operName;//文件名
private InputStream fileContent;//文件内容
private long size;//文件内容大小
private Integer resizeWidth = 0;
public static String DEFAULT_SUFFIX = ".dat";
public static String MIX_SUFFIX = ".mix";//混合字段产生的文件扩展名
public FileItemParam() {
super();
}
/**
* 直接根据文件对象构造一个插入操作的文件操作参数
* @param file
*/
public FileItemParam(File file) {
this.operKind = ConstantActions.OPER_INSERT;
this.operName = file.getName();
checkFileName();
try {
this.fileContent = new java.io.FileInputStream(file);
}
catch (FileNotFoundException e) {
throw new RuntimeException("指定的文件不存在:" + file.getName());
}
this.size = file.length();
}
/**
* 构造函数
* @param operKind 操作类型
* @param fileName 文件名
* @param fileContent 文件内容
*/
public FileItemParam(int operKind, String fileName, InputStream fileContent, long size) {
super();
this.operKind = operKind;
this.operName = fileName;
checkFileName();
this.fileContent = fileContent;
this.size = size;
}
public FileItemParam(int operKind, File file, String fileName) {
super();
this.operKind = operKind;
if (fileName != null)
this.operName = fileName;
else
this.operName = file.getName();
checkFileName();
try {
this.fileContent = new java.io.FileInputStream(file);
}
catch (FileNotFoundException e) {
throw new RuntimeException("指定的文件不存在:" + file.getName());
}
this.size = file.length();
}
public FileItemParam(int operKind, String fileName, byte[] fileContent) {
super();
this.operKind = operKind;
this.operName = fileName;
checkFileName();
if (fileContent != null){
this.fileContent = new java.io.ByteArrayInputStream(fileContent);
this.size = fileContent.length;
}
}
/**
* 构造函数,xml结构如下:
* 若newName为空oldName不为空代表需要删除该文件;newName不为空代表覆盖或新建文件;两者相同代表修改文件。
* <fileItem newFileName="" oldFileName="">文件字节流base64编码</fileItem>
*/
/*public FileItemParam(Element fileEle) {
super();
operName = fileEle.attributeValue("fileName");
String kind = fileEle.attributeValue("kind");
operKind = ConstantActions.TranslateOperKind(kind);
checkFileName();
String content = fileEle.getText();
if (content != null && content.length() > 0){
byte[] fileBytes = Base64.decodeBase64(content.getBytes());
size = fileBytes.length;
fileContent = new java.io.ByteArrayInputStream(fileBytes);
}
else
size = 0;
}*/
/**
* 构造函数
* @param operKind 操作类型
* @param fileName 文件名
* @param base64Content 文件内容(base64编码)
*/
public FileItemParam(String kind, String fileName, String base64Content) {
super();
operKind = ConstantActions.TranslateOperKind(kind);
operName = fileName;
checkFileName();
if (base64Content != null && base64Content.length() > 0){
byte[] fileBytes = Base64.decodeFast(base64Content);
//byte[] fileBytes = Base64.decodeBase64(base64Content.getBytes());
size = fileBytes.length;
fileContent = new java.io.ByteArrayInputStream(fileBytes);
}
else
size = 0;
}
private void checkFileName(){
if (operName == null || operName.length() == 0){
if (operKind == ConstantActions.OPER_INSERT)
operName = UuidUtil.getUuid() + DEFAULT_SUFFIX;
}
else{
String suffix = FileUtils.getSuffixName(operName);
if (StringUtils.isBlank(suffix))
operName = operName + DEFAULT_SUFFIX;//自动增加扩展名
}
}
/**
* 自动生成文件名
* @param preId 前缀
* @param index 序号，图片集中的第几个，0代表第一个
* @return
* @author zhangyz created on 2012-5-8
*/
public String getAutoFileName(String preId, int index){
StringBuilder builder = new StringBuilder();
String oldName;
oldName = getFileName();
String suffix = null;
if (oldName != null)
suffix = FileUtils.divideFileName(oldName)[1];
else
suffix = DEFAULT_SUFFIX;
/*if (index > 0)
builder.append(HtxtHelper.FILES_DIVIDE);*/
builder.append(preId);
if (index > 0)
builder.append("_").append(index);
builder.append(suffix);
return builder.toString();
}
/**
* 生成一个与已有文件名不重名的新文件名
* @param preId 文件名前缀
* @param oldFileItems 旧文件名集,包括路径和文件名两部分.
* @return 新文件名，不含目录。
* @author zhangyz created on 2012-5-8
*/
public String genNewFileItemName(String preId, List<Pair<String, String>> oldFileItems){
int index = 0;
String preToken;
do{
if (index == 0)
preToken = preId;
else
preToken = preId + "_" + index;
boolean bFind = false;
if (oldFileItems != null){
for (int ii = 0; ii < oldFileItems.size(); ii++){
if (oldFileItems.get(ii).getV2().startsWith(preToken)){
bFind = true;
break;
}
}
}
if (!bFind){
return getAutoFileName(preId, index);
}
index ++;
}
while (true);
}
/**
* 是否新增
* @return
* @author zhangyz created on 2012-4-17
*/
public boolean isInsert(){
return operKind == ConstantActions.OPER_INSERT;
}
/**
* 是否修改
* @return
* @author zhangyz created on 2012-4-17
*/
public boolean isUpdate(){
return operKind == ConstantActions.OPER_UPDATE;
}
/**
* 是删除
* @return
* @author zhangyz created on 2012-4-17
*/
public boolean isDelete(){
return operKind == ConstantActions.OPER_DELETE;
}
public boolean isIgnore(){
return operKind == ConstantActions.OPER_IGNORE;
}
/**
* 判断是否可以没有实际文件内容（在某些操作类型下）
* @return
* @author zhangyz created on 2012-5-12
*/
public boolean canNoContent(){
return (isDelete() || isIgnore());
}
public int getOperKind() {
return operKind;
}
public void setOperKind(int operKind) {
this.operKind = operKind;
}
public String getFileName() {
return operName;
}
public void setFileName(String fileName) {
this.operName = fileName;
}
public InputStream getFileContent() {
return fileContent;
}
public void setFileContent(InputStream fileContent) {
this.fileContent = fileContent;
}
public long getSize() {
return size;
}
/**
* 补充设置文件大小
* @param size
* @author zhangyz created on 2014-4-6
*/
public void initSize(long size) {
if (this.size <= 0)
this.size = size;
}
/**
* 获取接收到的文件的扩展名
* @return
* @author zhangyz created on 2013-6-7
*/
public String getSuffix() {
return FileUtils.getSuffixName(operName);
}
/**
* 存储的内容是否为文件名
* @param filePathName
* @return
* @author zhangyz created on 2012-8-16
*/
public static boolean isMixFileName(String filePathName){
if (StringUtils.isNotBlank(filePathName) && filePathName.endsWith(FileItemParam.MIX_SUFFIX)){
if (filePathName.length() == 40)
return true;
else{
int index = filePathName.lastIndexOf("/");
if (index > 0){
filePathName = filePathName.substring(index + 1);
if (filePathName.length() == 40)
return true;
}
//还不行说明是新的数字命名的文件名
String onlyFileName = FileUtils.getOnlyFileName(filePathName);//如最新的试题回答表的id是long型
if (StringUtils.isNumeric(onlyFileName))
return true;
}
return false;
}
else
return false;
}
public Integer getResizeWidth() {
return resizeWidth;
}
public void setResizeWidth(Integer resizeWidth) {
this.resizeWidth = resizeWidth;
}
}