From 41e68b971936844a8833816bb96d70613bee593f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=BC=A0=E9=B9=8F?= <zanpen2000@gmail.com>
Date: Mon, 27 May 2019 10:43:25 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BB=A4=E4=BA=BA=E5=8F=91=E6=8C=87=E7=9A=84?=
 =?UTF-8?q?=E6=96=B0=E5=BB=BAID=E6=93=8D=E4=BD=9C?=
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---
 java/NewId.java | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 java/NewId.java

diff --git a/java/NewId.java b/java/NewId.java
new file mode 100644
index 0000000..f22d242
--- /dev/null
+++ b/java/NewId.java
@@ -0,0 +1,28 @@
+
+import Java.util.Random;
+
+class SomeBizOperation {
+
+    /*疯狂到令人发指*/
+    public String getNewId() {
+
+        while (true) {
+            String id = newId(10);
+            var obj = SomeTableQuery.getById(id);
+            if (obj == null) {
+                return obj;
+            }
+        }
+    }
+
+    private String newId(int length) {
+        String str = "0123456789";
+        var random = new Random();
+        StringBuffer sb = new StringBuffer();
+        for (int i =0; i<length; i++){
+            int number = random.next(62);
+            sb.append(str.charAt(number));
+        }
+        return sb.toString();
+    }
+}
\ No newline at end of file
-- 
Gitee