diff --git a/eladmin-common/src/main/java/me/zhengjie/utils/QueryHelp.java b/eladmin-common/src/main/java/me/zhengjie/utils/QueryHelp.java
index 73d67b1a..3a93ce4e 100644
--- a/eladmin-common/src/main/java/me/zhengjie/utils/QueryHelp.java
+++ b/eladmin-common/src/main/java/me/zhengjie/utils/QueryHelp.java
@@ -13,9 +13,9 @@ import java.util.*;
  * @date 2019-6-4 14:59:48
  */
 @Slf4j
+@SuppressWarnings({"unchecked","all"})
 public class QueryHelp {
 
-    @SuppressWarnings("all")
     public static <R, Q> Predicate getPredicate(Root<R> root, Q query, CriteriaBuilder cb) {
         List<Predicate> list = new ArrayList<>();
 
diff --git a/eladmin-generator/src/main/java/me/zhengjie/service/impl/GeneratorServiceImpl.java b/eladmin-generator/src/main/java/me/zhengjie/service/impl/GeneratorServiceImpl.java
index bff73357..ae31a12d 100644
--- a/eladmin-generator/src/main/java/me/zhengjie/service/impl/GeneratorServiceImpl.java
+++ b/eladmin-generator/src/main/java/me/zhengjie/service/impl/GeneratorServiceImpl.java
@@ -32,7 +32,7 @@ import java.util.Map;
  * @date 2019-01-02
  */
 @Service
-@SuppressWarnings("all")
+@SuppressWarnings({"unchecked","all"})
 public class GeneratorServiceImpl implements GeneratorService {
 
     @PersistenceContext
diff --git a/eladmin-system/src/main/java/me/zhengjie/modules/mnt/util/DataTypeEnum.java b/eladmin-system/src/main/java/me/zhengjie/modules/mnt/util/DataTypeEnum.java
index e6d4ef46..e104b9ee 100644
--- a/eladmin-system/src/main/java/me/zhengjie/modules/mnt/util/DataTypeEnum.java
+++ b/eladmin-system/src/main/java/me/zhengjie/modules/mnt/util/DataTypeEnum.java
@@ -18,43 +18,60 @@
  */
 
 package me.zhengjie.modules.mnt.util;
-
 import lombok.extern.slf4j.Slf4j;
 
+/**
+ * @author /
+ */
 @Slf4j
+@SuppressWarnings({"unchecked","all"})
 public enum DataTypeEnum {
 
+    /** mysql */
     MYSQL("mysql", "mysql", "com.mysql.jdbc.Driver", "`", "`", "'", "'"),
 
+    /** oracle */
     ORACLE("oracle", "oracle", "oracle.jdbc.driver.OracleDriver", "\"", "\"", "\"", "\""),
 
+    /** sql server */
     SQLSERVER("sqlserver", "sqlserver", "com.microsoft.sqlserver.jdbc.SQLServerDriver", "\"", "\"", "\"", "\""),
 
+    /** h2 */
     H2("h2", "h2", "org.h2.Driver", "`", "`", "\"", "\""),
 
+    /** phoenix */
     PHOENIX("phoenix", "hbase phoenix", "org.apache.phoenix.jdbc.PhoenixDriver", "", "", "\"", "\""),
 
+    /** mongo */
     MONGODB("mongo", "mongodb", "mongodb.jdbc.MongoDriver", "`", "`", "\"", "\""),
 
+    /** sql4es */
     ELASTICSEARCH("sql4es", "elasticsearch", "nl.anchormen.sql4es.jdbc.ESDriver", "", "", "'", "'"),
 
+    /** presto */
     PRESTO("presto", "presto", "com.facebook.presto.jdbc.PrestoDriver", "", "", "\"", "\""),
 
+    /** moonbox */
     MOONBOX("moonbox", "moonbox", "moonbox.jdbc.MbDriver", "`", "`", "`", "`"),
 
+    /** cassandra */
     CASSANDRA("cassandra", "cassandra", "com.github.adejanovski.cassandra.jdbc.CassandraDriver", "", "", "'", "'"),
 
+    /** click house */
     CLICKHOUSE("clickhouse", "clickhouse", "ru.yandex.clickhouse.ClickHouseDriver", "", "", "\"", "\""),
 
+    /** kylin */
     KYLIN("kylin", "kylin", "org.apache.kylin.jdbc.Driver", "\"", "\"", "\"", "\""),
 
+    /** vertica */
     VERTICA("vertica", "vertica", "com.vertica.jdbc.Driver", "", "", "'", "'"),
 
+    /** sap */
     HANA("sap", "sap hana", "com.sap.db.jdbc.Driver", "", "", "'", "'"),
 
+    /** impala */
     IMPALA("impala", "impala", "com.cloudera.impala.jdbc41.Driver", "", "", "'", "'");
 
-
     private String feature;
     private String desc;
     private String driver;
@@ -63,7 +80,7 @@ public enum DataTypeEnum {
     private String aliasPrefix;
     private String aliasSuffix;
 
-    private static final String jdbcUrlPrefix = "jdbc:";
+    private static final String JDBC_URL_PREFIX = "jdbc:";
 
     DataTypeEnum(String feature, String desc, String driver, String keywordPrefix, String keywordSuffix, String aliasPrefix, String aliasSuffix) {
         this.feature = feature;
@@ -78,7 +95,7 @@ public enum DataTypeEnum {
     public static DataTypeEnum urlOf(String jdbcUrl) {
         String url = jdbcUrl.toLowerCase().trim();
         for (DataTypeEnum dataTypeEnum : values()) {
-            if (url.startsWith(jdbcUrlPrefix + dataTypeEnum.feature)) {
+            if (url.startsWith(JDBC_URL_PREFIX + dataTypeEnum.feature)) {
                 try {
                     Class<?> aClass = Class.forName(dataTypeEnum.getDriver());
                     if (null == aClass) {
diff --git a/eladmin-system/src/main/java/me/zhengjie/modules/mnt/util/SqlUtils.java b/eladmin-system/src/main/java/me/zhengjie/modules/mnt/util/SqlUtils.java
index 9920dc87..74693cef 100644
--- a/eladmin-system/src/main/java/me/zhengjie/modules/mnt/util/SqlUtils.java
+++ b/eladmin-system/src/main/java/me/zhengjie/modules/mnt/util/SqlUtils.java
@@ -5,14 +5,17 @@ import com.alibaba.druid.pool.DruidDataSource;
 import com.alibaba.druid.util.StringUtils;
 import com.google.common.collect.Lists;
 import lombok.extern.slf4j.Slf4j;
-
 import javax.sql.DataSource;
 import java.io.*;
+import java.nio.charset.StandardCharsets;
 import java.sql.*;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 
+/**
+ * @author /
+ */
 @Slf4j
 public class SqlUtils {
 
@@ -36,17 +39,17 @@ public class SqlUtils {
 	/**
 	 * 获取数据源
 	 *
-	 * @param jdbcUrl
-	 * @param userName
-	 * @param password
-	 * @return
+	 * @param jdbcUrl /
+	 * @param userName /
+	 * @param password /
+	 * @return DataSource
 	 */
 	private static DataSource getDataSource(String jdbcUrl, String userName, String password) {
 		String key = getKey(jdbcUrl, userName, password);
 		if (!map.containsKey(key) || null == map.get(key)) {
 			DruidDataSource druidDataSource = new DruidDataSource();
 
-			String className = null;
+			String className;
 			try {
 				className = DriverManager.getDriver(jdbcUrl.trim()).getClass().getName();
 			} catch (SQLException e) {
@@ -98,11 +101,10 @@ public class SqlUtils {
 		Connection connection = null;
 		try {
 			connection = dataSource.getConnection();
-		} catch (Exception e) {
-			connection = null;
-		}
+		} catch (Exception ignored) {}
 		try {
-			if (null == connection || connection.isClosed() || !connection.isValid(5)) {
+			int timeOut = 5;
+			if (null == connection || connection.isClosed() || !connection.isValid(timeOut)) {
 				log.info("connection is closed or invalid, retry get connection!");
 				connection = dataSource.getConnection();
 			}
@@ -117,10 +119,9 @@ public class SqlUtils {
 		if (null != connection) {
 			try {
 				connection.close();
-				connection = null;
 			} catch (Exception e) {
 				e.printStackTrace();
-				log.error("connection close error", e.getMessage());
+				log.error("connection close error：" + e.getMessage());
 			}
 		}
 	}
@@ -130,7 +131,6 @@ public class SqlUtils {
 		if (rs != null) {
 			try {
 				rs.close();
-				rs = null;
 			} catch (Exception e) {
 				e.printStackTrace();
 			}
@@ -145,7 +145,7 @@ public class SqlUtils {
 				return true;
 			}
 		} catch (Exception e) {
-			log.info("Get connection failed:", e.getMessage());
+			log.info("Get connection failed:" + e.getMessage());
 		} finally {
 			releaseConnection(connection);
 		}
@@ -168,9 +168,8 @@ public class SqlUtils {
 
 	/**
 	 * 批量执行sql
-	 * @param connection
-	 * @param sqlList
-	 * @return
+	 * @param connection /
+	 * @param sqlList /
 	 */
 	public static void batchExecute(Connection connection, List<String> sqlList) throws SQLException {
 			Statement st = connection.createStatement();
@@ -185,18 +184,16 @@ public class SqlUtils {
 
 	/**
 	 * 将文件中的sql语句以；为单位读取到列表中
-	 * @param sqlFile
-	 * @return
-	 * @throws Exception
+	 * @param sqlFile /
+	 * @return /
+	 * @throws Exception e
 	 */
 	private static List<String> readSqlList(File sqlFile) throws Exception {
 		List<String> sqlList = Lists.newArrayList();
 		StringBuilder sb = new StringBuilder();
-		BufferedReader reader = null;
-		try {
-			reader = new BufferedReader(new InputStreamReader(
-					new FileInputStream(sqlFile), "UTF-8"));
-			String tmp = null;
+		try (BufferedReader reader = new BufferedReader(new InputStreamReader(
+				new FileInputStream(sqlFile), StandardCharsets.UTF_8))) {
+			String tmp;
 			while ((tmp = reader.readLine()) != null) {
 				log.info("line:{}", tmp);
 				if (tmp.endsWith(";")) {
@@ -210,11 +207,6 @@ public class SqlUtils {
 			if (!"".endsWith(sb.toString().trim())) {
 				sqlList.add(sb.toString());
 			}
-		} finally {
-			try {
-				reader.close();
-			} catch (IOException e1) {
-			}
 		}
 
 		return sqlList;
diff --git a/eladmin-system/src/main/java/me/zhengjie/modules/system/service/impl/DictDetailServiceImpl.java b/eladmin-system/src/main/java/me/zhengjie/modules/system/service/impl/DictDetailServiceImpl.java
index 6c9c990e..2ea7ccb0 100644
--- a/eladmin-system/src/main/java/me/zhengjie/modules/system/service/impl/DictDetailServiceImpl.java
+++ b/eladmin-system/src/main/java/me/zhengjie/modules/system/service/impl/DictDetailServiceImpl.java
@@ -39,7 +39,7 @@ public class DictDetailServiceImpl implements DictDetailService {
 
     @Override
     @Cacheable
-    public Map queryAll(DictDetailQueryCriteria criteria, Pageable pageable) {
+    public Map<String,Object> queryAll(DictDetailQueryCriteria criteria, Pageable pageable) {
         Page<DictDetail> page = dictDetailRepository.findAll((root, criteriaQuery, criteriaBuilder) -> QueryHelp.getPredicate(root,criteria,criteriaBuilder),pageable);
         return PageUtil.toPage(page.map(dictDetailMapper::toDto));
     }