From bad976cba89d411a4228f8b4fc13b1c51644bf18 Mon Sep 17 00:00:00 2001
From: Tang <tang_0416@126.com>
Date: Sun, 16 Jul 2023 10:47:59 +0000
Subject: [PATCH] =?UTF-8?q?add=20Java/ReUserVar.java.=20=E8=BF=99=E4=B8=AA?=
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Signed-off-by: Tang <tang_0416@126.com>
---
 Java/ReUserVar.java | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 Java/ReUserVar.java

diff --git a/Java/ReUserVar.java b/Java/ReUserVar.java
new file mode 100644
index 0000000..cc0025d
--- /dev/null
+++ b/Java/ReUserVar.java
@@ -0,0 +1,35 @@
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+public class ReuseVar {
+    public static void main(String[] args) {
+        List<Map<String, Object>> handle = handle("");
+        System.out.println(handle);
+    }
+
+    // 模拟下方法，实际是在 service 中的数据处理方法
+    public static List<Map<String, Object>> handle(String arg) {
+        // ... 相关业务查询（arg 在这部分做筛选用）
+
+        List<Map<String, Object>> result = new ArrayList<>();
+        HashMap<String, Object> row = new HashMap<>();
+
+        // 这里模拟下有3条记录
+        int rowsNum = 3;
+
+        // 模拟遍历处理
+        for (int i = 0; i < rowsNum; i++) {
+            // 数据处理(mapKey 取的是数据中的标识)
+            row.put("xxx", new Object());
+            // ... 其他处理 设置的key不固定
+            row.put("yyy", new Object());
+            row.put("zzz", new Object());
+            // ...
+            result.add(row);
+        }
+
+        return result;
+    }
+}
\ No newline at end of file
-- 
Gitee