diff --git a/pom.xml b/pom.xml
index 115f598..7666981 100644
--- a/pom.xml
+++ b/pom.xml
@@ -17,6 +17,16 @@
             </includes>
         </resource>
     </resources>
+    <plugins>
+        <plugin>
+            <groupId>org.apache.maven.plugins</groupId>
+            <artifactId>maven-compiler-plugin</artifactId>
+            <configuration>
+                <source>8</source>
+                <target>8</target>
+            </configuration>
+        </plugin>
+    </plugins>
 </build>
 
 <dependencies>
diff --git a/src/main/java/minsecurity/identity/persist/sqlite/Sqlite.java b/src/main/java/minsecurity/identity/persist/sqlite/Sqlite.java
new file mode 100644
index 0000000..dfa3206
--- /dev/null
+++ b/src/main/java/minsecurity/identity/persist/sqlite/Sqlite.java
@@ -0,0 +1,54 @@
+package minsecurity.identity.persist.sqlite;
+
+/*
+ * @Author: zhengqi wu
+ * @Description: Sqlite封装
+ * @Version: 1.0.0
+ * @Date: 22:34 2021/04/01
+ * @Copyright: MIN-Group；国家重大科技基础设施——未来网络北大实验室；深圳市信息论与未来网络重点实验室
+ */
+// 存在配置信息，使用单例模式封装工具类
+public class Sqlite {
+    private static final Sqlite Instance = new Sqlite(); // sqlite 唯一object
+
+    private String passwd = "2DD29CA851E7B56E4697B0E1F08507293D761A05CE4D1B628663F411A8086D99"; // 初始数据库密码
+    private String db_file = "identity.db"; // 数据库文件名
+    private Sqlite(){
+
+    }
+
+    /**
+     * 获取Sqlite object
+     * @return Sqlite object
+     */
+    public static Sqlite getInstance() {
+        return Instance;
+    }
+
+    /**
+     * 设置数据库的连接密码
+     * @param pass 新密码
+     * @throws Exception
+     */
+    public void setPasswd(String pass) throws Exception {
+        if (pass.length() != 64){
+            throw new Exception("Invalid Length");
+        }
+        passwd = pass;
+    }
+
+    public void open(String filePath){
+        try{
+            boolean db_exists = SqliteUtil.pathExists(filePath);
+            if (!db_exists){
+
+            }
+            String real_db_file = filePath + db_file;
+
+        }catch (Exception ex){
+            // TODO 出错时关闭数据库
+        }
+    }
+
+
+}
diff --git a/src/main/java/minsecurity/identity/persist/sqlite/SqliteUtil.java b/src/main/java/minsecurity/identity/persist/sqlite/SqliteUtil.java
new file mode 100644
index 0000000..03820c8
--- /dev/null
+++ b/src/main/java/minsecurity/identity/persist/sqlite/SqliteUtil.java
@@ -0,0 +1,33 @@
+package minsecurity.identity.persist.sqlite;
+
+import java.io.File;
+
+/*
+ * @Author: zhengqi wu
+ * @Description: sqlite工具类封装
+ * @Version: 1.0.0
+ * @Date: 10:34 2021/03/10
+ * @Copyright: MIN-Group；国家重大科技基础设施——未来网络北大实验室；深圳市信息论与未来网络重点实验室
+ */
+
+// 无配置信息，采用静态类
+public final class SqliteUtil {
+    // Home returns the home directory for the executing user.
+    //
+    // This uses an OS-specific method for discovering the home directory.
+    // An error is returned if a home directory cannot be detected.
+    public static String home()
+    {
+        return System.getProperty("user.home");
+    }
+
+    /**
+     * 判断文件是否存在
+     * @param path 特定文件路径
+     * @return 判断结果
+     */
+    public static boolean pathExists(String path){
+        File file = new File(path);
+        return file.exists();
+    }
+}
diff --git a/src/main/java/minsecurity/identity/persist/sqlite/db/Db.java b/src/main/java/minsecurity/identity/persist/sqlite/db/Db.java
new file mode 100644
index 0000000..8198d7a
--- /dev/null
+++ b/src/main/java/minsecurity/identity/persist/sqlite/db/Db.java
@@ -0,0 +1,4 @@
+package minsecurity.identity.persist.sqlite.db;
+
+public class Db {
+}
diff --git a/src/main/java/minsecurity/identity/persist/sqlite/db/Internal.java b/src/main/java/minsecurity/identity/persist/sqlite/db/Internal.java
new file mode 100644
index 0000000..11433d0
--- /dev/null
+++ b/src/main/java/minsecurity/identity/persist/sqlite/db/Internal.java
@@ -0,0 +1,4 @@
+package minsecurity.identity.persist.sqlite.db;
+
+public class Internal {
+}
diff --git a/src/test/java/minsecurity/identity/sqlite/SqliteTest.java b/src/test/java/minsecurity/identity/sqlite/SqliteTest.java
new file mode 100644
index 0000000..8f2f170
--- /dev/null
+++ b/src/test/java/minsecurity/identity/sqlite/SqliteTest.java
@@ -0,0 +1,14 @@
+package minsecurity.identity.sqlite;
+
+import minsecurity.identity.persist.sqlite.SqliteUtil;
+import org.junit.Test;
+
+import static org.junit.Assert.assertFalse;
+
+public class SqliteTest {
+    @Test
+    public void testHome(){
+        System.out.println(SqliteUtil.home());
+        assertFalse(SqliteUtil.pathExists("/aaa/1.txt"));
+    }
+}