测试

ruoyi-common/src/main/java/com/ruoyi/common/utils/file/WeatherUtils.java

@@ -0,0 +1,66 @@
+package com.ruoyi.common.utils.file;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.io.*;
+import java.net.*;
+import java.util.Map;
+
+/**
+ * @Author: JinSheng Song
+ * @Date: 2022/6/10 9:17
+ */
+public class WeatherUtils
+{
+
+
+    public static String httpRequest(String requestUrl,Map params) {
+        //buffer用于接受返回的字符
+        StringBuffer buffer = new StringBuffer();
+        try {
+            //建立URL，把请求地址给补全，其中urlencode（）方法用于把params里的参数给取出来
+            URL url = new URL(requestUrl+"?"+urlencode(params));
+            //打开http连接
+            HttpURLConnection httpUrlConn = (HttpURLConnection) url.openConnection();
+            httpUrlConn.setDoInput(true);
+            httpUrlConn.setRequestMethod("GET");
+            httpUrlConn.connect();
+
+            //获得输入
+            InputStream inputStream = httpUrlConn.getInputStream();
+            InputStreamReader inputStreamReader = new InputStreamReader(inputStream, "utf-8");
+            BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
+
+            //将bufferReader的值给放到buffer里
+            String str = null;
+            while ((str = bufferedReader.readLine()) != null) {
+                buffer.append(str);
+            }
+            //关闭bufferReader和输入流
+            bufferedReader.close();
+            inputStreamReader.close();
+            inputStream.close();
+            inputStream = null;
+            //断开连接
+            httpUrlConn.disconnect();
+
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+        //返回字符串
+        return buffer.toString();
+    }
+
+    public static String urlencode(Map<String,Object>data) {
+        //将map里的参数变成像 showapi_appid=###&showapi_sign=###&的样子
+        StringBuilder sb = new StringBuilder();
+        for (Map.Entry i : data.entrySet()) {
+            try {
+                sb.append(i.getKey()).append("=").append(URLEncoder.encode(i.getValue()+"","UTF-8")).append("&");
+            } catch (UnsupportedEncodingException e) {
+                e.printStackTrace();
+            }
+        }
+        return sb.toString();
+    }
+}