Java: add SeaweedOutputStream example

other/java/examples/src/main/java/com/seaweedfs/examples/UnzipFile.java

@@ -23,7 +23,7 @@ public class UnzipFile {
         long localProcessTime = startTime2 - startTime;
 
         SeaweedInputStream seaweedInputStream = new SeaweedInputStream(
-                filerGrpcClient, "/", "test.zip");
+                filerGrpcClient, "/test.zip");
         parseZip(seaweedInputStream);
 
         long swProcessTime = System.currentTimeMillis() - startTime2;

other/java/examples/src/main/java/com/seaweedfs/examples/WriteFile.java

@@ -0,0 +1,48 @@
+package com.seaweedfs.examples;
+
+import seaweedfs.client.FilerGrpcClient;
+import seaweedfs.client.SeaweedInputStream;
+import seaweedfs.client.SeaweedOutputStream;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.zip.ZipEntry;
+import java.util.zip.ZipInputStream;
+
+public class WriteFile {
+
+    public static void main(String[] args) throws IOException {
+
+        FilerGrpcClient filerGrpcClient = new FilerGrpcClient("localhost", 18888);
+
+        SeaweedInputStream seaweedInputStream = new SeaweedInputStream(
+                filerGrpcClient, "/test.zip");
+        unZipFiles(filerGrpcClient, seaweedInputStream);
+
+    }
+
+    public static void unZipFiles(FilerGrpcClient filerGrpcClient, InputStream is) throws IOException {
+        ZipInputStream zin = new ZipInputStream(is);
+        ZipEntry ze;
+        while ((ze = zin.getNextEntry()) != null) {
+
+            String filename = ze.getName();
+            if (filename.indexOf("/") >= 0) {
+                filename = filename.substring(filename.lastIndexOf("/") + 1);
+            }
+            if (filename.length()==0) {
+                continue;
+            }
+
+            SeaweedOutputStream seaweedOutputStream = new SeaweedOutputStream(filerGrpcClient, "/test/"+filename);
+            byte[] bytesIn = new byte[16 * 1024];
+            int read = 0;
+            while ((read = zin.read(bytesIn))!=-1) {
+                seaweedOutputStream.write(bytesIn,0,read);
+            }
+            seaweedOutputStream.close();
+
+            System.out.println(ze.getName());
+        }
+    }
+}