翻转""为equals调用方，防止空指针异常

Sxile

2020-07-17 aad58640dcaab7bed4f9720b57bb7f0cc2c4e343

 ruoyi/src/main/java/com/ruoyi/common/utils/http/HttpUtils.java

@@ -204,7 +204,7 @@
            String ret = "";

            while ((ret = br.readLine()) != null)

            {

                if (ret != null && !ret.trim().equals(""))

                if (ret != null && !"".equals(ret.trim()))

                {

                    result.append(new String(ret.getBytes("ISO-8859-1"), "utf-8"));

                }