场景
项目框架情况：
SpringMVC + MybatisPlus + msyql...
需求：
从sqlserver数据库中同步产品和产品类别两个表的数据。
思路
1、利用 java自带的java.sql.Connection 与sqlserver数据库建立连接。
2、通过Apache的dbutils工具类QueryRunner（ org.apache.commons.dbutils.QueryRunner）来获取sqlserver中的对应数据。
3、分析转化上述数据至我们需要的数据。
4、通过本地项目中的mysql数据源（或者步骤1中同样的方式），与msyql建立连接。
5、批量插入、更新mysql中的数据。
代码
1、数据源连接工具类DbConnUtil
package com.platform.syncdatabase.util;
import com.platform.utils.ResourceUtil;
import java.sql.Connection;
import java.sql.DriverManager;
public class DbConnUtil {
private static String sqlserverDriverClassName = ResourceUtil.getConfigByName("hy.jindie.sqlserverDriverClassName");
private static String sqlserverDbUrl = ResourceUtil.getConfigByName("hy.jindie.sqlserverDbUrl");
private static String sqlserverDbUser = ResourceUtil.getConfigByName("hy.jindie.sqlserverDbUser");
private static String sqlserverDbPwd = ResourceUtil.getConfigByName("hy.jindie.sqlserverDbPwd");
/**
* 从这里取数据
*
* @return
*/
public static Connection createConnSrc() {
Connection conn = null;
try {
Class.forName(sqlserverDriverClassName).newInstance();
conn = DriverManager.getConnection(sqlserverDbUrl, sqlserverDbUser, sqlserverDbPwd);
} catch (Exception e) {
e.printStackTrace();
}
return conn;
}
/**
* 存入的目标数据库
*
* @return
*/
public static Connection createConnDist() {
Connection conn = null;
try {
String driverClassName = "com.mysql.jdbc.Driver";
String dbUrl = "jdbc:mysql://192.168.1.110:3306/haoyuan?useUnicode=true&characterEncoding=UTF-8";
String dbUser = "root";
String dbPwd = "1234567890";
Class.forName(driverClassName).newInstance();
conn = DriverManager.getConnection(dbUrl, dbUser, dbPwd);
} catch (Exception e) {
e.printStackTrace();
}
return conn;
}
public static void close(Connection conn) {
try {
conn.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
2、Apache dbutils QueryRunner数据操作工具类的封装类DbBuilder
package com.platform.syncdatabase;
import com.platform.syncdatabase.util.DbConnUtil;
import org.apache.commons.dbutils.QueryRunner;
import org.apache.commons.dbutils.handlers.BeanHandler;
import org.apache.commons.dbutils.handlers.BeanListHandler;
import org.apache.commons.dbutils.handlers.MapHandler;
import org.apache.commons.dbutils.handlers.MapListHandler;
import java.sql.Connection;
import java.util.List;
import java.util.Map;
public class DbBuilder {
Connection connection = null;
public DbBuilder(Connection conn) {
this.connection = conn;
}
public QueryRunner getQueryRunner() {
return new QueryRunner();
}
/**
* 根据传入的sql，查询记录，以Map形式返回第一行记录 注意：如果有多行记录，只会返回第一行，所以使用场景需要注意，可以使用根据主键来查询的场景
*
* @param sql
* @param params
* @return
*/
public Map<String, Object> getFirstRowMap(String sql, Object... params) {
try {
QueryRunner runner = new QueryRunner();
return runner.query(connection, sql, new MapHandler(), params);
} catch (Exception ex) {
ex.printStackTrace();
}
return null;
}
/**
* 根据传入的sql查询数据，以List Map形式返回
*
* @param sql
* @param params
* @return
*/
public List<Map<String, Object>> getListMap(String sql, Object... params) {
try {
QueryRunner runner = new QueryRunner();
return runner.query(connection, sql, new MapListHandler(), params);
} catch (Exception ex) {
ex.printStackTrace();
}
return null;
}
/**
* 根据sql和对象，查询结果并以对象形式返回
*
* @param sql
* @param type
* @return
*/
public <T> T getBean(String sql, Class<T> type) {
try {
QueryRunner runner = getQueryRunner();
return runner.query(sql, new BeanHandler<T>(type));
} catch (Exception ex) {
ex.printStackTrace();
}
return null;
}
/**
* 根据sql和对象，查询结果并以对象形式返回
*
* @param sql
* @param type
* @return
*/
public <T> T getBean(Connection connection, String sql, Class<T> type) {
try {
QueryRunner runner = new QueryRunner();
return runner.query(connection, sql, new BeanHandler<T>(type));
} catch (Exception ex) {
ex.printStackTrace();
}
return null;
}
/**
* 根据sql和对象，查询结果并以对象形式返回
*
* @param sql
* @param type
* @param params
* @return
*/
public <T> T getBean(Connection connection, String sql, Class<T> type, Object... params) {
try {
QueryRunner runner = new QueryRunner();
return runner.query(connection, sql, new BeanHandler<T>(type), params);
} catch (Exception ex) {
ex.printStackTrace();
}
return null;
}
/**
* 根据sql查询list对象
*
* @param sql
* @param type
* @return
*/
public <T> List<T> getListBean(Connection connection, String sql, Class<T> type) {
try {
QueryRunner runner = new QueryRunner();
return runner.query(connection, sql, new BeanListHandler<T>(type));
} catch (Exception ex) {
ex.printStackTrace();
}
return null;
}
/**
* 根据sql查询list对象
*
* @param sql
* @param type
* @param params
* @return
*/
public <T> List<T> getListBean(String sql, Class<T> type, Object... params) {
try {
QueryRunner runner = getQueryRunner();
return runner.query(sql, new BeanListHandler<T>(type), params);
} catch (Exception ex) {
ex.printStackTrace();
}
return null;
}
/**
* 根据sql查询list对象
*
* @param sql
* @param type
* @param params
* @return
*/
public <T> List<T> getListBean(Connection connection, String sql, Class<T> type, Object... params) {
try {
QueryRunner runner = new QueryRunner();
return runner.query(connection, sql, new BeanListHandler<T>(type), params);
} catch (Exception ex) {
ex.printStackTrace();
}
return null;
}
/**
* 保存操作
*
* @param sql
* @param params
* @return
*/
public int save(String sql, Object... params) {
try {
QueryRunner runner = getQueryRunner();
return runner.update(connection, sql, params);
} catch (Exception ex) {
ex.printStackTrace();
}
return 0;
}
/**
* 保存操作
*
* @param sql
* @param params
* @return
*/
public int save(Connection connection, String sql, Object... params) {
try {
QueryRunner runner = new QueryRunner();
return runner.update(connection, sql, params);
} catch (Exception ex) {
ex.printStackTrace();
}
return 0;
}
/**
* 更新操作
*
* @param sql
* @param params
* @return
*/
public int update(String sql, Object... params) {
try {
QueryRunner runner = getQueryRunner();
return runner.update(sql, params);
} catch (Exception ex) {
ex.printStackTrace();
}
return 0;
}
/**
* 更新操作
*
* @param sql
* @param params
* @return
*/
public int update(Connection connection, String sql, Object... params) {
try {
QueryRunner runner = new QueryRunner();
return runner.update(connection, sql, params);
} catch (Exception ex) {
ex.printStackTrace();
}
return 0;
}
/**
* 删除操作
*
* @param sql
* @param params
* @return
*/
public int delete(String sql, Object... params) {
try {
QueryRunner runner = getQueryRunner();
return runner.update(sql, params);
} catch (Exception ex) {
ex.printStackTrace();
}
return 0;
}
/**
* 删除操作
*
* @param sql
* @param params
* @return
*/
public int delete(Connection connection, String sql, Object... params) {
try {
QueryRunner runner = new QueryRunner();
return runner.update(connection, sql, params);
} catch (Exception ex) {
ex.printStackTrace();
}
return 0;
}
/**
* 批量操作，包括批量保存、修改、删、 *
*
* @param sql
* @param params
* @return
*/
public int[] batch(String sql, Object[][] params) {
try {
QueryRunner runner = getQueryRunner();
return runner.batch(sql, params);
} catch (Exception ex) {
ex.printStackTrace();
}
return null;
}
/**
* 批量操作，包括批量保存、修改、删处 *
*
* @param sql
* @param params
* @return
*/
public int[] batch(Connection connection, String sql, Object[][] params) {
try {
QueryRunner runner = new QueryRunner();
return runner.batch(connection, sql, params);
} catch (Exception ex) {
ex.printStackTrace();
}
return null;
}
/**
* �?��事务
*/
public void beginTransaction(Connection conn) {
try {
conn.setAutoCommit(false);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
/**
* 回滚事务
*/
public void rollback(Connection conn) {
try {
conn.rollback();
} catch (Exception e) {
throw new RuntimeException(e);
}
}
/**
* 提交事务
*/
public void commit(Connection conn) {
try {
conn.commit();
} catch (Exception e) {
throw new RuntimeException(e);
}
}
public static void main(String[] args) {
try {
Connection conn = DbConnUtil.createConnDist();
DbBuilder b = new DbBuilder(conn);
System.out.println(b.save("insert into demo_test(id,kitchen) values(?,?)", "11", "11"));
DbConnUtil.close(conn);
} catch (Exception e) {
e.printStackTrace();
}
}
}
3、数据同步类DoDataSycn，以下同步中对mysql中已存在的数据进行更新时可以先与sqlserver中的数据对比版本变化，只更新有变化的数据即可。此处由于sqlserver数据库的数据版本信息不可用所以取消了对比，而是全量更新。
package com.platform.syncdatabase;
import com.platform.entity.CategoryEntity;
import com.platform.entity.GoodsEntity;
import com.platform.service.CategoryService;
import com.platform.service.GoodsService;
import com.platform.syncdatabase.util.DbConnUtil;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import java.math.BigDecimal;
import java.sql.Connection;
import java.util.*;
@Slf4j
public class DoDataSycn {
@Autowired
CategoryService categoryService;
@Autowired
GoodsService goodsService;
/**
* 更新品类
*/
public void updateCategory() {
//打开链接
Connection connSqlserver = DbConnUtil.createConnSrc();
DbBuilder sqlserver = new DbBuilder(connSqlserver);
try {
//DO
//DO 1、遍历mysql数据。添加map id为key
//DO 2、遍历sqlserver数据获取新增数据添加插入map，获取修改过的数据添加update map
//DO 3、实现批量更新功能
String sql = "Select * from t_Item WHERE FItemClassID = 4";
List<Map<String, Object>> remoteList = sqlserver.getListMap(sql, null);//获取远程金蝶数据
if (remoteList != null && !remoteList.isEmpty()) {
List<CategoryEntity> insertList = new ArrayList<>();
List<CategoryEntity> updateList = new ArrayList<>();
//查询mysql现有品类
List<CategoryEntity> mysqlCategoryList = categoryService.queryList(new HashMap<>());
if (mysqlCategoryList != null && !mysqlCategoryList.isEmpty()) {//已存在数据时，对比更新
//1、现有数据分析整理
Map<String, CategoryEntity> mysqlCategoryMap = new HashMap<>();
for (CategoryEntity category : mysqlCategoryList) {
mysqlCategoryMap.put(category.getId() + "", category);
}
//获取现有id
Set<String> ids = mysqlCategoryMap.keySet();
log.info("ids.size() " + ids.size());
//2、开始对比数据
//遍历金蝶数据
for (Map item : remoteList) {
try {
String id = item.get("FItemID") + "";
if (ids.contains(id)) {//已存在的品类 更新
updateList.add(copyCategoryInfo(item, mysqlCategoryMap.get(id)));
} else {//新增的品类
insertList.add(copyCategoryInfo(item, new CategoryEntity()));
}
} catch (Exception e) {
e.printStackTrace();
}
}
} else {//初始化全量插入
for (Map item : remoteList) {
try {
insertList.add(copyCategoryInfo(item, new CategoryEntity()));
} catch (Exception e) {
e.printStackTrace();
}
}
}
try {
if (!insertList.isEmpty()) {
log.info(("saveBatch category " + insertList.size()));
categoryService.saveBatch(insertList);
}
} catch (Exception e) {
e.printStackTrace();
}
try {
if (!updateList.isEmpty()) {
log.info(("batchUpdate category " + updateList.size()));
categoryService.batchUpdate(updateList);
}
} catch (Exception e) {
e.printStackTrace();
}
}
} catch (Exception e) {
e.printStackTrace();
} finally {
//关闭
DbConnUtil.close(connSqlserver);
}
}
/**
* 更新品类信息
*
* @param item
* @param categoryEntity
* @return
*/
private CategoryEntity copyCategoryInfo(Map item, CategoryEntity categoryEntity) {
categoryEntity.setId(Integer.parseInt(item.get("FItemID") + ""));
categoryEntity.setName(item.get("FName") + "");
categoryEntity.setParentId(Integer.parseInt(item.get("FParentID") + ""));
categoryEntity.setSortOrder(Integer.parseInt(item.get("FShortNumber") + ""));
String fDeleted = item.get("FDeleted") + "";
if (StringUtils.isNotBlank(fDeleted) && "1".equals(fDeleted)) {
categoryEntity.setIsShow(0);
} else {
categoryEntity.setIsShow(1);
}
categoryEntity.setLevel(item.get("FLevel") + "");
categoryEntity.setFlevel(Integer.parseInt(item.get("FLevel") + ""));
categoryEntity.setFullnumber(item.get("FFullNumber") + "");
categoryEntity.setFullname(item.get("FFullName") + "");
categoryEntity.setUuid(item.get("UUID") + "");
//拼接ModifyTime
byte[] fModifyTimes = (byte[]) item.get("FModifyTime");
StringBuilder modifyTime = new StringBuilder();
for (byte b : fModifyTimes) {
modifyTime.append(b);
}
categoryEntity.setModifyTime(modifyTime.toString());//添加更新版本信息
categoryEntity.setIsGood((boolean) item.get("FDetail") ? "1" : "0");
return categoryEntity;
}
/**
* 更新产品
*/
public void updateGoods() {
//打开链接
Connection connSqlserver = DbConnUtil.createConnSrc();
DbBuilder sqlserver = new DbBuilder(connSqlserver);
try {
//DO
//DO 1、遍历mysql数据。添加map id为key
//DO 2、遍历sqlserver数据获取新增数据添加插入map，获取修改过的数据添加update map
//DO 3、实现批量更新功能
String sql = "SELECT" +
" i.FItemID," +
" c.FName," +
" i.FParentID," +
" i.FShortNumber," +
" i.FDeleted," +
" i.FLevel," +
" i.FFullNumber," +
" i.FFullName," +
" i.UUID," +
" i.FModifyTime," +
" c.FOrderPrice," +
" c.FOrderPrice," +
" c.FOrderPrice," +
" c.FModel " +
"FROM " +
" t_item i" +
" LEFT JOIN t_icitemcore c ON i.FItemID = c.FItemID " +
"WHERE " +
" i.FItemClassID = 4 " +
" AND i.FDetail = 1 ;";
// " AND i.FDetail = 1 "+
// " AND i.FItemID = 291;";
List<Map<String, Object>> remoteList = sqlserver.getListMap(sql, null);//获取远程金蝶数据
if (remoteList != null && !remoteList.isEmpty()) {
List<GoodsEntity> insertList = new ArrayList<>();
List<GoodsEntity> updateList = new ArrayList<>();
//查询mysql现有产品
List<GoodsEntity> mysqlGoodsList = goodsService.queryAllGoods();
if (mysqlGoodsList != null && !mysqlGoodsList.isEmpty()) {//已存在数据时，对比更新
//1、现有数据分析整理
Map<String, GoodsEntity> mysqlGoodsMap = new HashMap<>();
for (GoodsEntity goods : mysqlGoodsList) {
mysqlGoodsMap.put(goods.getId() + "", goods);
}
//获取现有id
Set<String> ids = mysqlGoodsMap.keySet();
//2、开始对比数据
//遍历金蝶数据
for (Map item : remoteList) {
try {
String id = item.get("FItemID") + "";
if (ids.contains(id)) {//已存在的品类
//更新
updateList.add(copyGoodsInfo(item, mysqlGoodsMap.get(id)));
} else {//新增的品类
insertList.add(copyGoodsInfo(item, new GoodsEntity()));
}
} catch (Exception e) {
e.printStackTrace();
}
}
} else {//初始化全量插入
for (Map item : remoteList) {
try {
insertList.add(copyGoodsInfo(item, new GoodsEntity()));
} catch (Exception e) {
e.printStackTrace();
}
}
}
try {
if (!insertList.isEmpty()) {
log.info(("saveBatch goods " + insertList.size()));
goodsService.saveBatch(insertList);
}
} catch (Exception e) {
e.printStackTrace();
}
try {
if (!updateList.isEmpty()) {
log.info(("batchUpdate goods " + updateList.size()));
goodsService.batchUpdate(updateList);
}
} catch (Exception e) {
e.printStackTrace();
}
}
} catch (Exception e) {
e.printStackTrace();
} finally {
//关闭
DbConnUtil.close(connSqlserver);
}
}
/**
* 更新产品信息
*
* @param item
* @param goodsEntity
* @return
*/
private GoodsEntity copyGoodsInfo(Map item, GoodsEntity goodsEntity) {
goodsEntity.setId(Integer.parseInt(item.get("FItemID") + ""));
goodsEntity.setName(item.get("FName") + "");
goodsEntity.setCategoryId(Integer.parseInt(item.get("FParentID") + ""));
goodsEntity.setSortOrder(Integer.parseInt(item.get("FShortNumber") + ""));
String fDeleted = item.get("FDeleted") + "";
if (StringUtils.isNotBlank(fDeleted) && "1".equals(fDeleted)) {
goodsEntity.setIsDelete(0);
} else {
goodsEntity.setIsDelete(1);
}
goodsEntity.setFlevel(Integer.parseInt(item.get("FLevel") + ""));
goodsEntity.setFullnumber(item.get("FFullNumber") + "");
goodsEntity.setFullname(item.get("FFullName") + "");
goodsEntity.setUuid(item.get("UUID") + "");
//拼接ModifyTime
byte[] fModifyTimes = (byte[]) item.get("FModifyTime");
StringBuilder modifyTime = new StringBuilder();
for (byte b : fModifyTimes) {
modifyTime.append(b);
}
goodsEntity.setModifyTime(modifyTime.toString());//添加更新版本信息
goodsEntity.setCounterPrice(new BigDecimal(item.get("FOrderPrice") + ""));
goodsEntity.setRetailPrice(new BigDecimal(item.get("FOrderPrice") + ""));
goodsEntity.setUnitPrice(new BigDecimal(item.get("FOrderPrice") + ""));
goodsEntity.setModel(item.get("FModel") + "");
return goodsEntity;
}
}
4、项目properties配置文件中的sqlserver连接信心配置
#sqlserver连接信息
hy.jindie.sqlserverDriverClassName = net.sourceforge.jtds.jdbc.Driver
hy.jindie.sqlserverDbUrl = jdbc:jtds:sqlserver://192.168.1.111:1433;DatabaseName=haoyuan
hy.jindie.sqlserverDbUser = sa
hy.jindie.sqlserverDbPwd = 123213214123在此鸣谢开源作者：在水一方发盐人 的开源代码。https://gitee.com/lostad/sqlserver_to_mysql/tree/master