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optimize the saver of database

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huoyo 2022-05-28 17:42:35 +08:00
parent c979f7161e
commit 012e7adc0d
1 changed files with 27 additions and 3 deletions
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30
src/main/java/cn/langpy/kotime/util/DataBaseUtil.java
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@ -32,7 +32,7 @@ public class DataBaseUtil {
} }
public static int insert(Connection connection, String sql, Object[] values) { public static int insert(Connection connection, String sql, Object[] values) {
PreparedStatement statement; PreparedStatement statement = null;
try { try {
statement = connection.prepareStatement(sql); statement = connection.prepareStatement(sql);
if (null != values) { if (null != values) {
@ -44,6 +44,14 @@ public class DataBaseUtil {
log.warning("Duplicate id：" + values[0]); log.warning("Duplicate id：" + values[0]);
} catch (SQLException throwables) { } catch (SQLException throwables) {
throwables.printStackTrace(); throwables.printStackTrace();
} finally {
if (statement != null) {
try {
statement.close();
} catch (SQLException throwables) {
throwables.printStackTrace();
}
}
} }
return 0; return 0;
} }
@ -72,7 +80,7 @@ public class DataBaseUtil {
public static List<Map<String, Object>> query(Connection connection, String sql, Object[] values) { public static List<Map<String, Object>> query(Connection connection, String sql, Object[] values) {
List<Map<String, Object>> list = new ArrayList<>(); List<Map<String, Object>> list = new ArrayList<>();
PreparedStatement statement; PreparedStatement statement = null;
try { try {
statement = connection.prepareStatement(sql); statement = connection.prepareStatement(sql);
if (null != values) { if (null != values) {
@ -90,13 +98,21 @@ public class DataBaseUtil {
} }
} catch (SQLException throwables) { } catch (SQLException throwables) {
throwables.printStackTrace(); throwables.printStackTrace();
} finally {
if (statement != null) {
try {
statement.close();
} catch (SQLException throwables) {
throwables.printStackTrace();
}
}
} }
return list; return list;
} }
public static <T> List<T> query(Connection connection, String sql, Object[] values, Class<T> c) { public static <T> List<T> query(Connection connection, String sql, Object[] values, Class<T> c) {
List<T> list = new ArrayList<>(); List<T> list = new ArrayList<>();
PreparedStatement statement; PreparedStatement statement = null;
try { try {
statement = connection.prepareStatement(sql); statement = connection.prepareStatement(sql);
if (null != values) { if (null != values) {
@ -139,6 +155,14 @@ public class DataBaseUtil {
e.printStackTrace(); e.printStackTrace();
} catch (InstantiationException e) { } catch (InstantiationException e) {
e.printStackTrace(); e.printStackTrace();
} finally {
if (statement != null) {
try {
statement.close();
} catch (SQLException throwables) {
throwables.printStackTrace();
}
}
} }
return list; return list;
} }