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Using try-with-resource to enable AutoCloseable feature in Java 8 #14

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Using try-with-resource to enable AutoCloseable feature in Java 8 #14

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26 changes: 4 additions & 22 deletions DownloadImg.java
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Original file line number Diff line number Diff line change
Expand Up @@ -15,10 +15,7 @@ public class DownloadImg {

public static void writeImgEntityToFile(HttpEntity imgEntity,String fileAddress) {
File storeFile = new File(fileAddress);
FileOutputStream output = null;
try {
output = new FileOutputStream(storeFile);

try (FileOutputStream output = new FileOutputStream(storeFile)){
if (imgEntity != null) {
InputStream instream;
instream = imgEntity.getContent();
Expand All @@ -27,30 +24,22 @@ public static void writeImgEntityToFile(HttpEntity imgEntity,String fileAddress)
while ((count = instream.read(b)) != -1) {
output.write(b, 0, count);
}

}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
output.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}

public static void main(String[] args) {
System.out.println("获取Bing图片地址中……");

SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
CloseableHttpClient httpClient = HttpClients.createDefault();
HttpGet httpGet = new HttpGet("http://cn.bing.com/");
CloseableHttpResponse response = null;
try {
response = httpClient.execute(httpGet);
try (
CloseableHttpClient httpClient = HttpClients.createDefault();
CloseableHttpResponse response = httpClient.execute(httpGet)) {
Pattern p = Pattern.compile("g_img=\\{url:.*\\.jpg");
Matcher m = p.matcher(EntityUtils.toString(response.getEntity()));
String address = null;
Expand All @@ -70,13 +59,6 @@ public static void main(String[] args) {
System.out.println("下载完毕.");
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
httpClient.close();
response.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}