diff --git a/2.x/chapter1-4/src/main/java/com/didispace/chapter14/HelloController.java b/2.x/chapter1-4/src/main/java/com/didispace/chapter14/HelloController.java
index d19b5ef6..084af5b8 100644
--- a/2.x/chapter1-4/src/main/java/com/didispace/chapter14/HelloController.java
+++ b/2.x/chapter1-4/src/main/java/com/didispace/chapter14/HelloController.java
@@ -1,4 +1,4 @@
-package com.didispace.chapter11;
+package com.didispace.chapter14;
 
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;
diff --git a/2.x/chapter3-1/src/main/resources/application.properties b/2.x/chapter3-1/src/main/resources/application.properties
index 66ff8fe4..44b3d10e 100644
--- a/2.x/chapter3-1/src/main/resources/application.properties
+++ b/2.x/chapter3-1/src/main/resources/application.properties
@@ -1,4 +1,4 @@
-spring.datasource.url=jdbc:mysql://localhost:3306/test
+spring.datasource.url=jdbc:mysql://localhost:3306/test?useSSL=false&serverTimezone=UTC
 spring.datasource.username=root
 spring.datasource.password=
 spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
\ No newline at end of file
diff --git a/2.x/chapter3-1/src/test/java/com/didispace/chapter31/Chapter31ApplicationTests.java b/2.x/chapter3-1/src/test/java/com/didispace/chapter31/Chapter31ApplicationTests.java
index 2905f545..1756bb6c 100644
--- a/2.x/chapter3-1/src/test/java/com/didispace/chapter31/Chapter31ApplicationTests.java
+++ b/2.x/chapter3-1/src/test/java/com/didispace/chapter31/Chapter31ApplicationTests.java
@@ -36,7 +36,7 @@ public void setUp() {
     }
 
     @Test
-    public void test() throws Exception {
+    public void test() {
         // 插入5个用户
         userSerivce.create("Tom", 10);
         userSerivce.create("Mike", 11);
@@ -55,7 +55,7 @@ public void test() throws Exception {
         userSerivce.deleteByName("Tom");
         userSerivce.deleteByName("Mike");
 
-        // 查数据库，应该有5个用户
+        // 查数据库，应该有3个用户
         Assert.assertEquals(3, userSerivce.getAllUsers());
 
     }