提取网络请求部分

src/main/java/cn/celess/blog/util/HttpUtil.java

@@ -0,0 +1,51 @@
+package cn.celess.blog.util;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.net.HttpURLConnection;
+import java.net.URL;
+import java.nio.charset.StandardCharsets;
+
+/**
+ * @Author: 小海
+ * @Date: 2020-04-23 15:51
+ * @Desc:
+ */
+public class HttpUtil {
+
+    public static String get(String urlStr) throws IOException {
+
+        StringBuffer sb = new StringBuffer();
+
+        HttpURLConnection urlConnection = null;
+        try {
+            URL url = new URL(urlStr);
+
+            //打开http
+            urlConnection = (HttpURLConnection) url.openConnection();
+            urlConnection.setDoInput(true);
+            urlConnection.setRequestMethod("GET");
+            urlConnection.connect();
+
+            try (
+                    InputStream inputStream = urlConnection.getInputStream();
+                    InputStreamReader inputStreamReader = new InputStreamReader(inputStream, StandardCharsets.UTF_8);
+                    BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
+            ) {
+                //将bufferReader的值给放到buffer里
+                String str = null;
+                while ((str = bufferedReader.readLine()) != null) {
+                    sb.append(str);
+                }
+            }
+        } finally {
+            //断开连接
+            if (urlConnection != null) {
+                urlConnection.disconnect();
+            }
+        }
+        return sb.toString();
+    }
+}