From e823c424891be5d0ea95e714c333d1d6b66be3e9 Mon Sep 17 00:00:00 2001
From: Jame <3525166560@qq.com>
Date: Fri, 28 Jun 2024 06:51:12 +0000
Subject: [PATCH] =?UTF-8?q?add=20Java/abstract.java.=20=E7=A7=B0=E4=B9=8B?=
 =?UTF-8?q?=E4=B8=BA=E6=88=91=E8=A7=81=E8=BF=87=E7=9A=84=E7=9C=9F=E7=9A=84?=
 =?UTF-8?q?=E6=9C=80=E6=8A=BD=E8=B1=A1=E7=9A=84=E4=BB=A3=E7=A0=81?=
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Signed-off-by: Jame <3525166560@qq.com>
---
 Java/abstract.java | 109 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 109 insertions(+)
 create mode 100644 Java/abstract.java

diff --git a/Java/abstract.java b/Java/abstract.java
new file mode 100644
index 0000000..527db76
--- /dev/null
+++ b/Java/abstract.java
@@ -0,0 +1,109 @@
+@Controller
+public class XXXController {
+
+    /**
+     * 真事，之前的公司项目就是这样的，我都看傻了
+     * 一个controller直接掌管全局，根据入参的"cmd"参数来控制到底走那个处理
+     * 你可能会问，那传json怎么传呢？哎！人家自有妙招 直接转字符串传入，然后在转Map处理
+     * 无论是普通的请求，还是下载文件等等，只要是请求，就都请求这个一个接口
+     * @param req
+     * @param res
+     */
+    @RequestMapping(value = "/xxx", method = {RequestMethod.GET})
+    public void xxx(HttpServletRequest req, HttpServletResponse res) {
+        A a = new A();
+        B b = new B();
+        C c = new C();
+        if (a.invoke(req, res)) return;
+        if (b.invoke(req, res)) return;
+        if (c.invoke(req, res)) return;
+    }
+
+}
+
+class A {
+
+    public boolean invoke(HttpServletRequest req, HttpServletResponse res) {
+        int cmd = Integer.parseInt(req.getParameter("cmd"));
+        int c = 6000;
+        if (cmd == c) {
+            //一顿操作
+            return true;
+        } else if (cmd == c + 1) {
+            //一顿操作
+            return true;
+        } else if (cmd == c + 2) {
+            //一顿操作
+            return true;
+        } else if (cmd == c + 3) {
+            //一顿操作
+            return true;
+        } else if (cmd == c + 4) {
+            //一顿操作
+            return true;
+        } else if (cmd == c + 5) {
+            //一顿操作
+            return true;
+        }
+        return false;
+    }
+
+}
+
+class B {
+
+    public boolean invoke(HttpServletRequest req, HttpServletResponse res) {
+        int cmd = Integer.parseInt(req.getParameter("cmd"));
+        int c = 7000;
+        if (cmd == c) {
+            //一顿操作
+            return true;
+        } else if (cmd == c + 1) {
+            //一顿操作
+            return true;
+        } else if (cmd == c + 2) {
+            //一顿操作
+            return true;
+        } else if (cmd == c + 3) {
+            //一顿操作
+            return true;
+        } else if (cmd == c + 4) {
+            //一顿操作
+            return true;
+        } else if (cmd == c + 5) {
+            //一顿操作
+            return true;
+        }
+        return false;
+    }
+
+}
+
+class C {
+
+    public boolean invoke(HttpServletRequest req, HttpServletResponse res) {
+        int cmd = Integer.parseInt(req.getParameter("cmd"));
+        int c = 8000;
+        if (cmd == c) {
+            //一顿操作
+            return true;
+        } else if (cmd == c + 1) {
+            //一顿操作
+            return true;
+        } else if (cmd == c + 2) {
+            //一顿操作
+            return true;
+        } else if (cmd == c + 3) {
+            //一顿操作
+            return true;
+        } else if (cmd == c + 4) {
+            //一顿操作
+            return true;
+        } else if (cmd == c + 5) {
+            //一顿操作
+            return true;
+        }
+        return false;
+    }
+
+}
\ No newline at end of file
-- 
Gitee