#

18516761980

2021-12-16 aae2a9ba3a33136e4106e36e47fbd5b5c31c4fd9

 src/main/java/com/zy/common/service/erp/ErpSqlServer.java

@@ -2,9 +2,14 @@

import com.core.common.Cools;
import com.zy.common.properties.ErpDbProperties;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.sql.*;
import java.util.ArrayList;
import java.util.HashMap;
@@ -15,11 +20,12 @@
 * 简单持久层框架
 * Created by vincent on 2020/11/26
 */
@Slf4j
@Service
public class ErpSqlServer {

    // 数据库连接
    private Connection conn;
//    private Connection conn;
    // 创建预编译语句对象，一般都是用这个而不用Statement
    private PreparedStatement pstm = null;
    // 创建一个结果集对象
@@ -61,30 +67,87 @@
    /*********************************   核心层   *********************************/
    /*****************************************************************************/


    private List<Map<String, Object>> executeQuery(String sql) {
        Connection conn = null;
        try {
            Connection conn = getConn();
            conn = getConn();
            pstm = conn.prepareStatement(sql);
            rs = pstm.executeQuery();
//            List<Map<String, Object>> maps = convertList(rs);
            return convertList(rs);
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        } finally {
            release();
            if (conn != null) {
                try {
                    conn.close();
                    conn = null;
                } catch (SQLException e) {
                    e.printStackTrace();
                }
            }
        }
    }

    private int executeUpdate(String sql) {

    public Number executeQueryCount(String sql, String column) {
        Number value = 0;
        Connection conn = null;
        try {
            Connection conn = getConn();
            conn = getConn();
            pstm = conn.prepareStatement(sql);
            return pstm.executeUpdate();
            rs = pstm.executeQuery();
//            ResultSetMetaData metaData = rs.getMetaData();
            while (rs.next()) {
                value = (Number) rs.getInt(column);
            }
            return value;
        } catch (Exception e) {
            e.printStackTrace();
            return 0;
        } finally {
            release();
            if (conn != null) {
                try {
                    conn.close();
                    conn = null;
                } catch (SQLException e) {
                    e.printStackTrace();
                }
            }
        }
    }

    private int executeUpdate(String sql) {
        Connection conn = null;
        try {
            conn = getConn();
            if(null != conn)
            {
                pstm = conn.prepareStatement(sql);
            } else {
                log.error("更新ERP中间表失败===>>数据库连接conn为空");
                log.error("更新ERP中间表失败===>>" + sql);
            }
            return pstm.executeUpdate();
        } catch (Exception e) {
            e.printStackTrace();
            log.error("更新ERP中间表失败===>>" + sql);
            log.error("更新ERP中间表失败===>>" + e);
            return 0;
        } finally {
            release();
            if (conn != null) {
                try {
                    conn.close();
                    conn = null;
                } catch (SQLException e) {
                    e.printStackTrace();
                }
            }
        }
    }

@@ -102,17 +165,29 @@
        return list;
    }

    private Connection getConn() {
        if (null == this.conn) {
            try {
                Class.forName(erpDbProperties.getDriver_class_name()).newInstance();
                this.conn = DriverManager.getConnection(erpDbProperties.getUr(), erpDbProperties.getUsername(), erpDbProperties.getPassword());
            } catch (Exception e) {
                e.printStackTrace();
                throw new RuntimeException("获取ERP数据库连接失败");
            }
    //synchronized
    public Connection getConn() throws SQLException {
        Connection conn = null;
        try {
            Class.forName(erpDbProperties.getDriver_class_name()).newInstance();
            conn = DriverManager.getConnection(erpDbProperties.getUr(), erpDbProperties.getUsername(), erpDbProperties.getPassword());
        } catch (Exception e) {
            log.error("获取ERP数据库连接失败");
            e.printStackTrace();
            throw new RuntimeException("获取ERP数据库连接失败");
        }
        return this.conn;
        return conn;
//        if (null == this.conn || this.conn.isClosed()) {
//            try {
//                Class.forName(erpDbProperties.getDriver_class_name()).newInstance();
//                this.conn = DriverManager.getConnection(erpDbProperties.getUr(), erpDbProperties.getUsername(), erpDbProperties.getPassword());
//            } catch (Exception e) {
//                log.error("获取ERP数据库连接失败");
//                e.printStackTrace();
//                throw new RuntimeException("获取ERP数据库连接失败");
//            }
//        }
//        return this.conn;
    }

    private void release() {
@@ -130,13 +205,31 @@
                e.printStackTrace();
            }
        }
        if (conn != null) {
            try {
                conn.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
//        if (conn != null) {
//            try {
//                conn.close();
//                conn = null;
//            } catch (SQLException e) {
//                e.printStackTrace();
//            }
//        }
    }

    /**
     * 深拷贝
     */
    public ArrayList deepClone(List list) throws Exception {
        // 序列化
        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        ObjectOutputStream oos = new ObjectOutputStream(bos);

        oos.writeObject(list);

        // 反序列化
        ByteArrayInputStream bis = new ByteArrayInputStream(bos.toByteArray());
        ObjectInputStream ois = new ObjectInputStream(bis);

        return (ArrayList) ois.readObject();
    }

}