From 5cb990c2707cc0c32772c4e06e6ee5785dc88ae3 Mon Sep 17 00:00:00 2001
From: wu xiangkai <wuxiangkai@yonyou.com>
Date: Tue, 20 Dec 2022 20:00:04 +0800
Subject: [PATCH] =?UTF-8?q?=E6=97=A5=E5=B8=B8=E6=8F=90=E4=BA=A4?=
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---
 spring/Spring core/SpringMVC.md | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/spring/Spring core/SpringMVC.md b/spring/Spring core/SpringMVC.md
index e6260df..9378e72 100644
--- a/spring/Spring core/SpringMVC.md	
+++ b/spring/Spring core/SpringMVC.md	
@@ -577,4 +577,18 @@ public class SimpleController {
     }
 }
 ```
+该异常参数会匹配被抛出的顶层异常（例如，被直接抛出的IOException），也会匹配被包装的内层cause（例如，被包装在IllegalStateException中的IOException）。**该参数会匹配任一层级的cause。**   
+> 只要@ExceptionHandler方法的异常参数类型匹配异常抛出stacktrace中任一层次的异常类型，异常都会被捕获并且处理。
+```java
+    @PostMapping("/shiro")
+    public String shiro() {
+        throw new RuntimeException(new JarException("fuck"));
+    }
+
+    @ExceptionHandler
+    public String handleJarException(JarException e) {
+        return e.getMessage() + ", Jar";
+    }
+```
+> 如果有多个@ExceptionHandler方法匹配抛出的异常链，那么