标签：文件 字节 zip fileNameList inputStream length new null String

InputStream[] inputStreamsList = new InputStream[jsonArr.size()];
String[] fileNameList = new String[jsonArr.size()];

这里是前台获取的文件信息，到fastdfs中查询出相应文件流

for(int i=0;i<jsonArr.size();i++) {
JSONObject jsonObj = (JSONObject) jsonArr.get(i);

String fileName = jsonObj.getString("filename");
String fastdir = jsonObj.getString("fastdir");
String conf_filename = this.getClass().getResource("/db.properties").getPath();
ClientGlobal.init(conf_filename);
TrackerClient tracker = null;
tracker = new TrackerClient();
TrackerServer trackerServer = null;
trackerServer = tracker.getConnection();
StorageServer storageServer = null;
StorageClient storageClient = null;
storageClient = new StorageClient(trackerServer, storageServer);
byte[] b = storageClient.download_file("group1", fastdir);

InputStream inputStream = new ByteArrayInputStream(b);
inputStreamsList[i] =inputStream;
fileNameList[i]= fileName;

}

//调用zip打包方法
public static void zip(String[] fileNameList, InputStream[] inputStream,String zipath) throws Exception {
if (fileNameList==null||fileNameList.length==0) {
throw new IllegalArgumentException("fileNameList is empty !");
}
if (fileNameList.length != inputStream.length) {
throw new IllegalArgumentException("fileNameList length is not equals to inputStream length !");
}
if(inputStream==null||inputStream.length==0) {
throw new IllegalArgumentException("inputStream is empty !");
}

ZipOutputStream zipOut = null;
try {

//创建一个空白zip
createNewzip(zipath);

File dir = new File(zipath);
OutputStream out = new FileOutputStream(dir);
zipOut = new ZipOutputStream(out);
for (int i = 0; i < fileNameList.length; i++) {
if (null == inputStream[i]) {
return;
}
try {
zipOut.putNextEntry(new ZipEntry(fileNameList[i]));
byte[] b = new byte[1024];
int len = 0;
while((len = inputStream[i].read(b)) != -1) {
zipOut.write(b,0,len);
}
zipOut.flush();
} catch (Exception e) {
e.printStackTrace();
}finally{
if(inputStream[i] != null) {
inputStream[i].close();
}
}
}
} finally {
try {
zipOut.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}

//创建一个空白zip参考

https://www.cnblogs.com/nje19951205/p/11991395.html

标签：文件,字节,zip,fileNameList,inputStream,length,new,null,String
来源： https://www.cnblogs.com/nje19951205/p/11991432.html

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