diff --git a/src/main/java/com/cloverta/webapi/controller/DemoController.java b/src/main/java/com/cloverta/webapi/controller/DemoController.java
index 48739f7..27cc608 100644
--- a/src/main/java/com/cloverta/webapi/controller/DemoController.java
+++ b/src/main/java/com/cloverta/webapi/controller/DemoController.java
@@ -52,4 +52,9 @@ public class DemoController {
                     ));
         }
     }
+
+    @GetMapping("/search")
+    public List<Student> searchById(@RequestParam int id) {
+        return studentService.findById(id);
+    }
 }
diff --git a/src/main/java/com/cloverta/webapi/mapper/StudentMapper.java b/src/main/java/com/cloverta/webapi/mapper/StudentMapper.java
index af77ee2..cd18ce1 100644
--- a/src/main/java/com/cloverta/webapi/mapper/StudentMapper.java
+++ b/src/main/java/com/cloverta/webapi/mapper/StudentMapper.java
@@ -11,4 +11,6 @@ public interface StudentMapper {
     List<Student> findAll();
 
     void insert(Student student);
+
+    List<Student> findById(int id);
 }
diff --git a/src/main/java/com/cloverta/webapi/service/StudentService.java b/src/main/java/com/cloverta/webapi/service/StudentService.java
index f5d5b6f..32f9e88 100644
--- a/src/main/java/com/cloverta/webapi/service/StudentService.java
+++ b/src/main/java/com/cloverta/webapi/service/StudentService.java
@@ -29,4 +29,8 @@ public class StudentService {
         studentMapper.insert(student);
         return true;
     }
+
+    public List<Student> findById(int id) {
+        return studentMapper.findById(id);
+    }
 }
diff --git a/src/main/resources/mapper/StudentMapper.xml b/src/main/resources/mapper/StudentMapper.xml
index bde8552..6f406ba 100644
--- a/src/main/resources/mapper/StudentMapper.xml
+++ b/src/main/resources/mapper/StudentMapper.xml
@@ -14,4 +14,8 @@
                     #{name}, #{email}, #{phone}
                  )
     </insert>
+
+    <select id="findById" resultType="Student" parameterType="int">
+        SELECT * FROM student WHERE id=#{id};
+    </select>
 </mapper>
\ No newline at end of file