From d2301be9661987e0dc70ec47caa601767a7d58f4 Mon Sep 17 00:00:00 2001
From: tritty <tritty@tritty-HP-Notebook>
Date: Mon, 28 May 2018 00:59:22 +0530
Subject: [PATCH] inputstream retrieval added

---
 .../resource/ClassPathResourceReader.java     | 26 +++++++++++++++++--
 .../baeldung/resource/SpringResourceTest.java |  9 ++++++-
 2 files changed, 32 insertions(+), 3 deletions(-)

diff --git a/spring-core/src/main/java/com/baeldung/resource/ClassPathResourceReader.java b/spring-core/src/main/java/com/baeldung/resource/ClassPathResourceReader.java
index f1e88eef04..c4618247e9 100644
--- a/spring-core/src/main/java/com/baeldung/resource/ClassPathResourceReader.java
+++ b/spring-core/src/main/java/com/baeldung/resource/ClassPathResourceReader.java
@@ -5,6 +5,9 @@ import java.io.File;
 import java.io.FileNotFoundException;
 import java.io.FileReader;
 import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.UnsupportedEncodingException;
 
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.annotation.Value;
@@ -68,7 +71,7 @@ public class ClassPathResourceReader {
     }
 
     /**
-     * Utility method to list contents ofa file.
+     * Utility method to list contents of a file.
      * 
      * @param fileResource
      * @return
@@ -83,11 +86,30 @@ public class ClassPathResourceReader {
             fileData.append(dataLine);
             dataLine = bufReader.readLine();
         }
-
+        bufReader.close();
         fileReader.close();
         return fileData.toString();
     }
 
+    /**
+     * Utility method to list contents of a stream 
+     * 
+     * @param ipStream
+     * @return
+     * @throws IOException
+     */
+    public String listResourceContentsUsingInputStream(InputStream ipStream) throws IOException {
+        BufferedReader bufReader = new BufferedReader(new InputStreamReader(ipStream, "UTF-8"));
+        String dataLine = bufReader.readLine();
+        StringBuilder fileData = new StringBuilder();
+        while (null != dataLine) {
+            fileData.append(dataLine);
+            dataLine = bufReader.readLine();
+        }
+        bufReader.close();
+        return fileData.toString();
+    }
+
     public Resource getSampleFile() {
         return resourceFile;
     }
diff --git a/spring-core/src/test/java/com/baeldung/resource/SpringResourceTest.java b/spring-core/src/test/java/com/baeldung/resource/SpringResourceTest.java
index 7703a016f4..ba1e2c6d37 100644
--- a/spring-core/src/test/java/com/baeldung/resource/SpringResourceTest.java
+++ b/spring-core/src/test/java/com/baeldung/resource/SpringResourceTest.java
@@ -18,7 +18,7 @@ public class SpringResourceTest {
 
     @Autowired
     private ClassPathResourceReader classPathResourceReader;
-    
+
     static final String testData = "This is a sample text to demonstrate usage of Spring Resource.";
 
     @Test
@@ -54,4 +54,11 @@ public class SpringResourceTest {
         String fileData = classPathResourceReader.listResourceContentsUsingFile(classPathResourceReader.retrieveFileUsingResourceUtils());
         assertEquals(testData, fileData);
     }
+
+    @Test
+    public void whenResourceAsStream_thenReadSuccessful() throws IOException {
+        Resource resource = classPathResourceReader.retrieveResourceUsingResourceLoader();
+        String fileData = classPathResourceReader.listResourceContentsUsingInputStream(resource.getInputStream());
+        assertEquals(testData, fileData);
+    }
 }