diff --git a/pom.xml b/pom.xml
index c20b489..3689e99 100644
--- a/pom.xml
+++ b/pom.xml
@@ -70,6 +70,11 @@
             <version>5.6.0</version>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>com.alibaba</groupId>
+            <artifactId>fastjson</artifactId>
+            <version>1.2.58</version>
+        </dependency>
     </dependencies>
 
     <build>
diff --git a/src/main/java/com/github/hcsp/encapsulation/Main.java b/src/main/java/com/github/hcsp/encapsulation/Main.java
index 51ce4a1..ba26d83 100644
--- a/src/main/java/com/github/hcsp/encapsulation/Main.java
+++ b/src/main/java/com/github/hcsp/encapsulation/Main.java
@@ -1,5 +1,7 @@
 package com.github.hcsp.encapsulation;
 
+import com.alibaba.fastjson.JSON;
+
 public class Main {
     /*
          假设你正在为学校开发一个学生分数记录系统
@@ -26,7 +28,11 @@ public static void main(String[] args) {
         student = deserialize(json);
     }
     // 序列化：将Student类转换成JSON字符串
-    public static String serialize(Student student) {}
+    public static String serialize(Student student) {
+        return JSON.toJSONString(student);
+    }
     // 反序列化：将JSON字符串转换成Student对象
-    public static Student deserialize(String json) {}
+    public static Student deserialize(String json) {
+        return JSON.parseObject(json,Student.class);
+    }
 }
diff --git a/src/main/java/com/github/hcsp/encapsulation/Student.java b/src/main/java/com/github/hcsp/encapsulation/Student.java
index 85d2f55..fea2a34 100644
--- a/src/main/java/com/github/hcsp/encapsulation/Student.java
+++ b/src/main/java/com/github/hcsp/encapsulation/Student.java
@@ -10,4 +10,33 @@ public class Student {
 
     /** 分数 */
     private int score;
+
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public boolean isFail() {
+        return this.score < 60;
+    }
+
+    public void setRetakingExam(boolean retakingExam) {
+        this.retakingExam = retakingExam;
+    }
+
+    public int getScore() {
+        return score;
+    }
+
+    public void setScore(int score) {
+        this.score = score;
+    }
+
+    public boolean isRetakingExam() {
+        return retakingExam;
+    }
 }
diff --git a/src/test/java/com/github/hcsp/encapsulation/MainTest.java b/src/test/java/com/github/hcsp/encapsulation/MainTest.java
index 3c5c949..85c1fef 100644
--- a/src/test/java/com/github/hcsp/encapsulation/MainTest.java
+++ b/src/test/java/com/github/hcsp/encapsulation/MainTest.java
@@ -28,7 +28,7 @@ public void canSerializeAndDeserialize() {
         s = com.alibaba.fastjson.JSON.parseObject(json, Student.class);
 
         Assertions.assertEquals("张三", s.getName());
-        Assertions.assertEquals(true, s.isRetakingExam());
+        Assertions.assertEquals(true, s.isFail());
         Assertions.assertEquals(59, s.getScore());
         Assertions.assertEquals(true, s.isFail());
     }