提交数据预处理程序初版

src/main/java/com/zdjizhi/utils/http/HttpClientUtil.java

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+package com.zdjizhi.utils.http;
+
+import cn.hutool.log.Log;
+import cn.hutool.log.LogFactory;
+import org.apache.commons.io.IOUtils;
+import org.apache.http.HttpEntity;
+import org.apache.http.client.methods.CloseableHttpResponse;
+import org.apache.http.client.methods.HttpGet;
+import org.apache.http.impl.client.CloseableHttpClient;
+import org.apache.http.impl.client.HttpClients;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+
+/**
+ * 获取网关schema的工具类
+ *
+ * @author qidaijie
+ */
+public class HttpClientUtil {
+    private static final Log logger = LogFactory.get();
+
+    /**
+     * 请求网关获取schema
+     *
+     * @param http 网关url
+     * @return schema
+     */
+    public static String requestByGetMethod(String http) {
+        CloseableHttpClient httpClient = HttpClients.createDefault();
+        StringBuilder entityStringBuilder;
+
+        HttpGet get = new HttpGet(http);
+        BufferedReader bufferedReader = null;
+        CloseableHttpResponse httpResponse = null;
+        try {
+            httpResponse = httpClient.execute(get);
+            HttpEntity entity = httpResponse.getEntity();
+            entityStringBuilder = new StringBuilder();
+            if (null != entity) {
+                bufferedReader = new BufferedReader(new InputStreamReader(httpResponse.getEntity().getContent(), "UTF-8"), 8 * 1024);
+                int intC;
+                while ((intC = bufferedReader.read()) != -1) {
+                    char c = (char) intC;
+                    if (c == '\n') {
+                        break;
+                    }
+                    entityStringBuilder.append(c);
+                }
+
+                return entityStringBuilder.toString();
+            }
+        } catch (IOException e) {
+            logger.error("Get Schema from Query engine ERROR! Exception message is:" + e);
+        } finally {
+            if (httpClient != null) {
+                try {
+                    httpClient.close();
+                } catch (IOException e) {
+                    logger.error("Close HTTP Client ERROR! Exception messgae is:" + e);
+                }
+            }
+            if (httpResponse != null) {
+                try {
+                    httpResponse.close();
+                } catch (IOException e) {
+                    logger.error("Close httpResponse ERROR! Exception messgae is:" + e);
+                }
+            }
+            if (bufferedReader != null) {
+                IOUtils.closeQuietly(bufferedReader);
+            }
+        }
+        return "";
+    }
+}