導入庫和依賴
配置druid.properties配置文件
此處使用的是mysql-connector-java-8連接器, 因此驅動器路徑(driverClassName)與5的不同
driverClassName=com.mysql.cj.jdbc.Driver
url=jdbc:mysql://localhost:3306/score_management_db?characterEncoding=UTF-8&serverTimezone=UTC
username=root
password=123123
# 初始化連接數量
initialSize=5
# 最大連接數
maxActive=10
# 最大等待時間
maxWait=3000
timeBetweenEvictionRunsMillis=60000
minEvictableIdleTimeMillis=300000
validationQuery=SELECT 1
testWhileIdle=true
testOnBorrow=false
testOnReturn=false
poolPreparedStatements=true
maxPoolPreparedStatementPerConnectionSize=200
寫一個JDBCUtil工具類
import com.alibaba.druid.pool.DruidDataSourceFactory;
import java.io.InputStream;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Properties;
import javax.sql.DataSource;
public class JDBCUtil {
private static DataSource ds;
static {
Properties prop = new Properties();
InputStream is = Main.class.getClassLoader().getResourceAsStream("druid.properties");
try {
prop.load(is);
ds = DruidDataSourceFactory.createDataSource(prop);
} catch (Exception var3) {
var3.printStackTrace();
}
}
public JDBCUtil() {
}
public static Connection getConnection() throws SQLException {
return ds.getConnection();
}
public static void close(Statement stat, Connection conn) {
close((ResultSet)null, stat, conn);
}
public static DataSource getDataSource() {
return ds;
}
public static void close(ResultSet rs, Statement stat, Connection conn) {
if (rs != null) {
try {
rs.close();
} catch (SQLException var6) {
var6.printStackTrace();
}
}
if (stat != null) {
try {
stat.close();
} catch (SQLException var5) {
var5.printStackTrace();
}
}
if (conn != null) {
try {
conn.close();
} catch (SQLException var4) {
var4.printStackTrace();
}
}
}
}
使用
JdbcTemplate template = new JdbcTemplate(JDBCUtil.getDataSource());
Q&A 請指正!