From 6b7b2214ef457a953381226dc42354d237d6b295 Mon Sep 17 00:00:00 2001
From: liulin <lin.liu@aliyun.com>
Date: 星期二, 13 八月 2024 00:39:26 +0800
Subject: [PATCH] 导出mysql
---
src/test/java/com/lunhan/xxx/host/Mysql2Gauss.java | 91 ++++++++++++++++++++++++++++++++++++++-------
1 files changed, 77 insertions(+), 14 deletions(-)
diff --git a/src/test/java/com/lunhan/xxx/host/Mysql2Gauss.java b/src/test/java/com/lunhan/xxx/host/Mysql2Gauss.java
index d7217f8..24ea4cf 100644
--- a/src/test/java/com/lunhan/xxx/host/Mysql2Gauss.java
+++ b/src/test/java/com/lunhan/xxx/host/Mysql2Gauss.java
@@ -1,34 +1,94 @@
package com.lunhan.xxx.host;
import com.lunhan.xxx.common.util.ListUtil;
-import com.lunhan.xxx.common.util.SerializeUtil;
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.SQLException;
import java.util.List;
import java.util.Map;
import java.util.Objects;
public class Mysql2Gauss {
- private static final String Mysql_DB = "water_basic";
- private static final String Gauss_DB = "water_basic";
- public static void main(String[] args) {
+ private static final String FROM_HOST = "113.250.189.120";
+ private static final String FROM_PORT = "23306";
+ private static final String FROM_USER = "lunhan";
+ private static final String FROM_PASSWORD = "lunhan123";
+ private static final String FROM_DB_NAME = "water_basic";
+ private static final String FROM_DRIVER = "com.mysql.cj.jdbc.Driver";
+ private static final String FROM_CONNECTION_STR = "jdbc:mysql://" + FROM_HOST + ":" + FROM_PORT + "/" + FROM_DB_NAME + "?serverTimezone=UTC&useUnicode=true&characterEncoding=utf8&useSSL=false";
+
+ private static final String TO_HOST = "113.250.189.120";
+ private static final String TO_PORT = "57654";
+ private static final String TO_USER = "lunhan";
+ private static final String TO_PASSWORD = "lunhan.20240330";
+ private static final String TO_DB_NAME = "water_basic";
+ private static final String TO_DRIVER = "org.postgresql.Driver";
+ private static final String TO_CONNECTION_STR = "jdbc:postgresql://" + TO_HOST + ":" + TO_PORT + "/" + TO_DB_NAME;
+
+ private static Connection CONN_FROM = null;
+ private static Connection CONN_TO = null;
+
+ static {
+ //加载驱动
+ try {
+ Class.forName(FROM_DRIVER);
+ } catch (ClassNotFoundException e) {
+ e.printStackTrace();
+ }
+ //获得连接
+ try {
+ CONN_FROM = DriverManager.getConnection(FROM_CONNECTION_STR, FROM_USER, FROM_PASSWORD);
+ } catch (SQLException e) {
+ e.printStackTrace();
+ }
+ //加载驱动
+ try {
+ Class.forName(TO_DRIVER);
+ } catch (ClassNotFoundException e) {
+ e.printStackTrace();
+ }
+ //获得连接
+ try {
+ CONN_TO = DriverManager.getConnection(TO_CONNECTION_STR, TO_USER, TO_PASSWORD);
+ } catch (SQLException e) {
+ e.printStackTrace();
+ }
+ }
+
+ public static void main(String[] args) throws SQLException {
+ // 创建触发器需要的函数
+ GenCodeGauss.execSql(CONN_TO, "CREATE OR REPLACE FUNCTION \"public\".\"update_timestamp_column\"()\n" +
+ " RETURNS \"pg_catalog\".\"trigger\" AS $BODY$\n" +
+ "BEGIN\n" +
+ "NEW.update_time := current_timestamp;\n" +
+ "RETURN NEW;\n" +
+ "END;\n" +
+ "$BODY$\n" +
+ " LANGUAGE plpgsql VOLATILE\n" +
+ " COST 100");
+
// 获取mysql所有的表名称
- Map<String, String> tables = GenCodeMysql.getTables(Mysql_DB);
+ Map<String, String> tables = GenCodeMysql.getTables(CONN_FROM, FROM_DB_NAME);
// 遍历表名，获取表结构
for (Map.Entry<String, String> table : tables.entrySet()) {
// 获取mysql表结构
- List<Map<String, Object>> columns = GenCodeMysql.getColumns(table.getKey(), Mysql_DB);
+ List<Map<String, Object>> columns = GenCodeMysql.getColumns(CONN_FROM, table.getKey(), FROM_DB_NAME);
// 获取mysql表的主键
- Map<String, String> mapPK = GenCodeMysql.getPK(table.getKey());
+ Map<String, String> mapPK = GenCodeMysql.getPK(CONN_FROM, table.getKey());
// 获取mysql表的索引
- Map<String, String> mapIndex = GenCodeMysql.getIndex(table.getKey());
+ Map<String, String> mapIndex = GenCodeMysql.getIndex(CONN_FROM, table.getKey());
System.out.println("从mysql查询表结构：" + table.getKey());
// 调用gauss创建表结构
- boolean genTale = GenCodeGauss.genTable(table.getKey(), table.getValue(), columns, mapPK, mapIndex);
- System.out.println("向gauss数据库创建表结果：" + genTale);
+ List<String> listGenTable = GenCodeGauss.genTable(table.getKey(), table.getValue(), columns, mapPK, mapIndex);
+ for (String sql : listGenTable) {
+ boolean result = GenCodeGauss.execSql(CONN_TO, sql);
+ System.out.println(sql + ", 执行结果：" + result);
+ }
// 获取mysql表所有数据
- String sqlSelect = "SELECT * FROM " + Mysql_DB + "." + table.getKey();
+ String sqlSelect = "SELECT * FROM " + FROM_DB_NAME + "." + table.getKey();
Integer count = 1;
Integer pageSize = 500;
String orderBy = "id";
@@ -36,7 +96,7 @@
while (count > 0) {
count = 0;
String sql = sqlSelect + (Objects.isNull(lastId) ? "" : " WHERE " + orderBy + " > " + GenCodeGauss.toDBValue(lastId) + "") + " ORDER BY " + orderBy + " LIMIT " + pageSize;
- List<Map<String, Object>> list = GenCodeMysql.getListAll(sql);
+ List<Map<String, Object>> list = GenCodeMysql.getListAll(CONN_FROM, sql);
if (ListUtil.isNullOrEmpty(list)) {
continue;
}
@@ -45,8 +105,11 @@
System.out.println("从mysql获取到数据：" + count);
// 批量插入gauss数据库
- List<Boolean> insertAll = GenCodeGauss.insertAll(list, table.getKey(), pageSize);
- System.out.println("向gauss数据库插入数据结果：" + SerializeUtil.toJson(insertAll));
+ List<String> insertAll = GenCodeGauss.insertAll(list, table.getKey(), pageSize);
+ for (String addData : insertAll) {
+ boolean result = GenCodeGauss.execSql(CONN_TO, addData);
+ System.out.println(addData + ", 执行结果：" + result);
+ }
}
}
}
--
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