From 2a31c8f42d8d33f3c627d1b9dc72c96d27ee0ede Mon Sep 17 00:00:00 2001
From: Rikako Wu <496063163@qq.com>
Date: Mon, 19 Dec 2022 23:51:08 +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 | 42 ++++++++++++++++++++++++++++++++-
 1 file changed, 41 insertions(+), 1 deletion(-)

diff --git a/spring/Spring core/SpringMVC.md b/spring/Spring core/SpringMVC.md
index 01394e5..e6260df 100644
--- a/spring/Spring core/SpringMVC.md	
+++ b/spring/Spring core/SpringMVC.md	
@@ -536,5 +536,45 @@ public class FormController {
 ```
 ### Model Design
 在web应用的上下文中，data binding涉及将http请求中的参数绑定到model object及其内层嵌套对象中。  
-默认情况下，所有spring允许绑到model object中所有的公共属性（有public的getter和setter）。
+默认情况下，所有spring允许绑到model object中所有的公共属性（有public的getter和setter）。  
+通常情况下，会自定义一个特定的model object类，并且该类中的public属性与表单中提交的参数相关联。
+```java
+// 只会对如下两个public属性进行data binding
+public class ChangeEmailForm {
+
+    private String oldEmailAddress;
+    private String newEmailAddress;
+
+    public void setOldEmailAddress(String oldEmailAddress) {
+        this.oldEmailAddress = oldEmailAddress;
+    }
+
+    public String getOldEmailAddress() {
+        return this.oldEmailAddress;
+    }
+
+    public void setNewEmailAddress(String newEmailAddress) {
+        this.newEmailAddress = newEmailAddress;
+    }
+
+    public String getNewEmailAddress() {
+        return this.newEmailAddress;
+    }
+
+}
+```
+### Exception
+在@Controller和@ControllerAdvice类中，可以含有@ExceptionHandler方法，该方法用于处理controller方法中抛出的异常，使用如下所示：
+```java
+@Controller
+public class SimpleController {
+
+    // ...
+
+    @ExceptionHandler
+    public ResponseEntity<String> handle(IOException ex) {
+        // ...
+    }
+}
+```