diff --git a/plusone-basic/plusone-basic-common/src/main/java/xyz/zhouxy/plusone/constant/ErrorCodeConsts.java b/plusone-basic/plusone-basic-common/src/main/java/xyz/zhouxy/plusone/constant/ErrorCodeConsts.java
index 2c38bd4..569a78f 100644
--- a/plusone-basic/plusone-basic-common/src/main/java/xyz/zhouxy/plusone/constant/ErrorCodeConsts.java
+++ b/plusone-basic/plusone-basic-common/src/main/java/xyz/zhouxy/plusone/constant/ErrorCodeConsts.java
@@ -2,6 +2,8 @@ package xyz.zhouxy.plusone.constant;
 
 public class ErrorCodeConsts {
     public static final int DEFAULT_ERROR_CODE = 9999999;
+    public static final int DEFAULT_SYS_ERROR_CODE = 5000000;
+    public static final int DEFAULT_BIZ_ERROR_CODE = 4000000;
 
     private ErrorCodeConsts() {
         throw new IllegalStateException("Utility class");
diff --git a/plusone-basic/plusone-basic-infrastructure/src/main/java/xyz/zhouxy/plusone/jdbc/common/ResultMapper.java b/plusone-basic/plusone-basic-infrastructure/src/main/java/xyz/zhouxy/plusone/jdbc/common/ResultMapper.java
index 55cf363..6d12efd 100644
--- a/plusone-basic/plusone-basic-infrastructure/src/main/java/xyz/zhouxy/plusone/jdbc/common/ResultMapper.java
+++ b/plusone-basic/plusone-basic-infrastructure/src/main/java/xyz/zhouxy/plusone/jdbc/common/ResultMapper.java
@@ -8,7 +8,7 @@ import java.sql.SQLException;
  *
  * <p>
  * 通过在 {@link #map(ResultSet)} 中配置 {@link ResultSet} 到对象的映射，
- * 可将 {@link #rowMapper(ResultSet, int)} 的方法应用，
+ * 可将 {@link #rowMapper(ResultSet, int)} 的方法引用，
  * 直接当成 {@link org.springframework.jdbc.core.RowMapper} 对象传给
  * {@link org.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate}
  * 的查询方法，