自定義typehandler
對于自定義typehandler來說,需要在配置文件中注冊typehandlers 然后需要實現typehandler接口,
一個例子
首先編寫調度的處理類
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package com.ming.mybatis;import org.apache.ibatis.type.jdbctype;import org.apache.ibatis.type.typehandler;import org.apache.logging.log4j.logmanager;import org.apache.logging.log4j.logger;import java.sql.callablestatement;import java.sql.preparedstatement;import java.sql.resultset;import java.sql.sqlexception;public class stringtypehandler implements typehandler<string> { private static logger logger = logmanager.getlogger(); /** * 對預編譯的sql語句進行設置的時候, * @param ps * @param i * @param parameter * @param jdbctype * @throws sqlexception */ @override public void setparameter(preparedstatement ps, int i, string parameter, jdbctype jdbctype) throws sqlexception { logger.info("使用typehandler"); // 設置預編譯的sql對象,的string ps.setstring(i, parameter); } /** * 獲得結果的時候,獲取到列名的時候,調度此方法 * @param rs * @param columnname * @return * @throws sqlexception */ @override public string getresult(resultset rs, string columnname) throws sqlexception { logger.info("使用自定義類型,結果獲取列名字符串"); return rs.getstring(columnname); } /** * 獲取結果集中的index * @param rs * @param columnindex * @return * @throws sqlexception */ @override public string getresult(resultset rs, int columnindex) throws sqlexception { logger.info("在結果集中獲取columnindex"); return rs.getstring(columnindex); } /** * 獲取結果集中的下標對應的字符串 * @param cs * @param columnindex * @return * @throws sqlexception */ @override public string getresult(callablestatement cs, int columnindex) throws sqlexception { logger.info("結果集中,下標獲取到字符串"); return cs.getstring(columnindex); }} |
再次編寫配置文件
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<typehandlers> <typehandler jdbctype="varchar" javatype="string" handler="com.ming.mybatis.stringtypehandler"> </typehandlers> |
傳入數據庫的為的varchar類型,javatype類型為string類型,調度的類為com.ming.mybatis.stringtypehandler
修改映射文件,說明那些需要對結果進行修改
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<?xml version="1.0" encoding="utf-8" ?><!doctype mapper public "-//mybatis.org//dtd mapper 3.0//en" "http://mybatis.org/dtd/mybatis-3-mapper.dtd"><!-- 定義接口類 --><mapper namespace="com.ming.mybatis.pojo.rolemapper"> <!-- id表示標簽標識 type標識結果的返回類型,其中role為在配置文件中使用的別名 role類 --> <resultmap type="role" id="rolemap"> <!-- id為主鍵映射關系 其中數據庫中的id為主鍵 --> <id column="id" property="id" javatype="int" jdbctype="integer"/> <!-- result為其他基本數據類型和實體類之間的映射 映射關系為role_name 到 rolename之間的映射 數據類型為string到varchar之間的映射關系 --> <result column="role_name" property="rolename" javatype="string" jdbctype="varchar"/> <!-- 這里使用typehandler表示遇到此處理集的時候,將會執行com.ming.mybatis.stringtypehandler --> <result column="note" property="note" typehandler="com.ming.mybatis.stringtypehandler"/> </resultmap> <!-- 書寫sql語句 定義使用resultmap為rolemap--> <select id="getrole" parametertype="int" resultmap="rolemap"> select id, role_name, note from t_role4 where id = #{id} </select> </mapper> |
其中傳入的參數為int類型,由于結果中mybatis沒有int類型,對應的是integer類型,在mysql中兩者類型相同,所以修改如上所示,表類型
書寫index.jsp
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<%@ page import="org.apache.ibatis.session.sqlsession" %><%@ page import="com.ming.util.sqlsessionfactoryutil" %><%@ page import="com.ming.mybatis.pojo.rolemapper" %><%@ page import="com.ming.mybatis.pojo.role" %><html><body><h2>hello world!</h2><% long starttime = system.currenttimemillis(); //獲取開始時間 sqlsession sqlsession = null; role role = null; for(int i = 0; i < 10; i++) { try { sqlsession = sqlsessionfactoryutil.opensqlsesion(); rolemapper rolemapper = sqlsession.getmapper(rolemapper.class); role = rolemapper.getrole(100); sqlsession.commit(); } catch (exception e) { e.printstacktrace(); sqlsession.rollback(); } finally { if (sqlsession != null) { sqlsession.close(); } } } long endtime = system.currenttimemillis(); //獲取結束時間%><%=role.getnote()%></body></html> |
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2019-04-13 05:03:33.181 [debug] org.apache.ibatis.transaction.jdbc.jdbctransaction.openconnection(jdbctransaction.java:136) - opening jdbc connection2019-04-13 05:03:33.181 [debug] org.apache.ibatis.datasource.pooled.pooleddatasource.popconnection(pooleddatasource.java:397) - checked out connection 197673257 from pool.2019-04-13 05:03:33.182 [debug] org.apache.ibatis.transaction.jdbc.jdbctransaction.setdesiredautocommit(jdbctransaction.java:100) - setting autocommit to false on jdbc connection [com.mysql.cj.jdbc.connectionimpl@bc84129]2019-04-13 05:03:33.235 [debug] org.apache.ibatis.logging.jdbc.basejdbclogger.debug(basejdbclogger.java:143) - ==> preparing: select id, role_name, note from t_role4 where id = ? 2019-04-13 05:03:33.236 [debug] org.apache.ibatis.logging.jdbc.basejdbclogger.debug(basejdbclogger.java:143) - ==> parameters: 100(integer)2019-04-13 05:03:33.275 [info ] com.ming.mybatis.stringtypehandler.getresult(stringtypehandler.java:48) - 使用自定義類型,結果獲取列名字符串2019-04-13 05:03:33.276 [info ] com.ming.mybatis.stringtypehandler.getresult(stringtypehandler.java:48) - 使用自定義類型,結果獲取列名字符串2019-04-13 05:03:33.277 [debug] org.apache.ibatis.logging.jdbc.basejdbclogger.debug(basejdbclogger.java:143) - <== total: 12019-04-13 05:03:33.277 [debug] org.apache.ibatis.transaction.jdbc.jdbctransaction.resetautocommit(jdbctransaction.java:122) - resetting autocommit to true on jdbc connection [com.mysql.cj.jdbc.connectionimpl@bc84129]2019-04-13 05:03:33.312 [debug] org.apache.ibatis.transaction.jdbc.jdbctransaction.close(jdbctransaction.java:90) - closing jdbc connection [com.mysql.cj.jdbc.connectionimpl@bc84129]2019-04-13 05:03:33.312 [debug] org.apache.ibatis.datasource.pooled.pooleddatasource.pushconnection(pooleddatasource.java:362) - returned connection 197673257 to pool.2019-04-13 05:03:33.313 [debug] org.apache.ibatis.transaction.jdbc.jdbctransaction.openconnection(jdbctransaction.java:136) - opening jdbc connection2019-04-13 05:03:33.314 [debug] org.apache.ibatis.datasource.pooled.pooleddatasource.popconnection(pooleddatasource.java:397) - checked out connection 197673257 from pool.2019-04-13 05:03:33.314 [debug] org.apache.ibatis.transaction.jdbc.jdbctransaction.setdesiredautocommit(jdbctransaction.java:100) - setting autocommit to false on jdbc connection [com.mysql.cj.jdbc.connectionimpl@bc84129]2019-04-13 05:03:33.346 [debug] org.apache.ibatis.logging.jdbc.basejdbclogger.debug(basejdbclogger.java:143) - ==> preparing: select id, role_name, note from t_role4 where id = ? 2019-04-13 05:03:33.348 [debug] org.apache.ibatis.logging.jdbc.basejdbclogger.debug(basejdbclogger.java:143) - ==> parameters: 100(integer)2019-04-13 05:03:33.386 [info ] com.ming.mybatis.stringtypehandler.getresult(stringtypehandler.java:48) - 使用自定義類型,結果獲取列名字符串2019-04-13 05:03:33.390 [info ] com.ming.mybatis.stringtypehandler.getresult(stringtypehandler.java:48) - 使用自定義類型,結果獲取列名字符串2019-04-13 05:03:33.391 [debug] org.apache.ibatis.logging.jdbc.basejdbclogger.debug(basejdbclogger.java:143) - <== total: 12019-04-13 05:03:33.395 [debug] org.apache.ibatis.transaction.jdbc.jdbctransaction.resetautocommit(jdbctransaction.java:122) - resetting autocommit to true on jdbc connection [com.mysql.cj.jdbc.connectionimpl@bc84129]2019-04-13 05:03:33.442 [debug] org.apache.ibatis.transaction.jdbc.jdbctransaction.close(jdbctransaction.java:90) - closing jdbc connection [com.mysql.cj.jdbc.connectionimpl@bc84129]2019-04-13 05:03:33.443 [debug] org.apache.ibatis.datasource.pooled.pooleddatasource.pushconnection(pooleddatasource.java:362) - returned connection 197673257 to pool.2019-04-13 05:03:33.443 [debug] org.apache.ibatis.transaction.jdbc.jdbctransaction.openconnection(jdbctransaction.java:136) - opening jdbc connection2019-04-13 05:03:33.444 [debug] org.apache.ibatis.datasource.pooled.pooleddatasource.popconnection(pooleddatasource.java:397) - checked out connection 197673257 from pool.2019-04-13 05:03:33.444 [debug] org.apache.ibatis.transaction.jdbc.jdbctransaction.setdesiredautocommit(jdbctransaction.java:100) - setting autocommit to false on jdbc connection [com.mysql.cj.jdbc.connectionimpl@bc84129]2019-04-13 05:03:33.479 [debug] org.apache.ibatis.logging.jdbc.basejdbclogger.debug(basejdbclogger.java:143) - ==> preparing: select id, role_name, note from t_role4 where id = ? 2019-04-13 05:03:33.480 [debug] org.apache.ibatis.logging.jdbc.basejdbclogger.debug(basejdbclogger.java:143) - ==> parameters: 100(integer)2019-04-13 05:03:33.518 [info ] com.ming.mybatis.stringtypehandler.getresult(stringtypehandler.java:48) - 使用自定義類型,結果獲取列名字符串2019-04-13 05:03:33.519 [info ] com.ming.mybatis.stringtypehandler.getresult(stringtypehandler.java:48) - 使用自定義類型,結果獲取列名字符串2019-04-13 05:03:33.520 [debug] org.apache.ibatis.logging.jdbc.basejdbclogger.debug(basejdbclogger.java:143) - <== total: 12019-04-13 05:03:33.520 [debug] org.apache.ibatis.transaction.jdbc.jdbctransaction.resetautocommit(jdbctransaction.java:122) - resetting autocommit to true on jdbc connection [com.mysql.cj.jdbc.connectionimpl@bc84129]2019-04-13 05:03:33.556 [debug] org.apache.ibatis.transaction.jdbc.jdbctransaction.close(jdbctransaction.java:90) - closing jdbc connection [com.mysql.cj.jdbc.connectionimpl@bc84129]2019-04-13 05:03:33.557 [debug] org.apache.ibatis.datasource.pooled.pooleddatasource.pushconnection(pooleddatasource.java:362) - returned connection 197673257 to pool.2019-04-13 05:03:33.558 [debug] org.apache.ibatis.transaction.jdbc.jdbctransaction.openconnection(jdbctransaction.java:136) - opening jdbc connection2019-04-13 05:03:33.558 [debug] org.apache.ibatis.datasource.pooled.pooleddatasource.popconnection(pooleddatasource.java:397) - checked out connection 197673257 from pool.2019-04-13 05:03:33.558 [debug] org.apache.ibatis.transaction.jdbc.jdbctransaction.setdesiredautocommit(jdbctransaction.java:100) - setting autocommit to false on jdbc connection [com.mysql.cj.jdbc.connectionimpl@bc84129]2019-04-13 05:03:33.591 [debug] org.apache.ibatis.logging.jdbc.basejdbclogger.debug(basejdbclogger.java:143) - ==> preparing: select id, role_name, note from t_role4 where id = ? 2019-04-13 05:03:33.592 [debug] org.apache.ibatis.logging.jdbc.basejdbclogger.debug(basejdbclogger.java:143) - ==> parameters: 100(integer)2019-04-13 05:03:33.638 [info ] com.ming.mybatis.stringtypehandler.getresult(stringtypehandler.java:48) - 使用自定義類型,結果獲取列名字符串2019-04-13 05:03:33.639 [info ] com.ming.mybatis.stringtypehandler.getresult(stringtypehandler.java:48) - 使用自定義類型,結果獲取列名字符串2019-04-13 05:03:33.640 [debug] org.apache.ibatis.logging.jdbc.basejdbclogger.debug(basejdbclogger.java:143) - <== total: 12019-04-13 05:03:33.640 [debug] org.apache.ibatis.transaction.jdbc.jdbctransaction.resetautocommit(jdbctransaction.java:122) - resetting autocommit to true on jdbc connection [com.mysql.cj.jdbc.connectionimpl@bc84129]2019-04-13 05:03:33.676 [debug] org.apache.ibatis.transaction.jdbc.jdbctransaction.close(jdbctransaction.java:90) - closing jdbc connection [com.mysql.cj.jdbc.connectionimpl@bc84129]2019-04-13 05:03:33.677 [debug] org.apache.ibatis.datasource.pooled.pooleddatasource.pushconnection(pooleddatasource.java:362) - returned connection 197673257 to pool.2019-04-13 05:03:33.677 [debug] org.apache.ibatis.transaction.jdbc.jdbctransaction.openconnection(jdbctransaction.java:136) - opening jdbc connection2019-04-13 05:03:33.677 [debug] org.apache.ibatis.datasource.pooled.pooleddatasource.popconnection(pooleddatasource.java:397) - checked out connection 197673257 from pool.2019-04-13 05:03:33.677 [debug] org.apache.ibatis.transaction.jdbc.jdbctransaction.setdesiredautocommit(jdbctransaction.java:100) - setting autocommit to false on jdbc connection [com.mysql.cj.jdbc.connectionimpl@bc84129]2019-04-13 05:03:33.711 [debug] org.apache.ibatis.logging.jdbc.basejdbclogger.debug(basejdbclogger.java:143) - ==> preparing: select id, role_name, note from t_role4 where id = ? 2019-04-13 05:03:33.712 [debug] org.apache.ibatis.logging.jdbc.basejdbclogger.debug(basejdbclogger.java:143) - ==> parameters: 100(integer)2019-04-13 05:03:33.747 [info ] com.ming.mybatis.stringtypehandler.getresult(stringtypehandler.java:48) - 使用自定義類型,結果獲取列名字符串2019-04-13 05:03:33.748 [info ] com.ming.mybatis.stringtypehandler.getresult(stringtypehandler.java:48) - 使用自定義類型,結果獲取列名字符串2019-04-13 05:03:33.748 [debug] org.apache.ibatis.logging.jdbc.basejdbclogger.debug(basejdbclogger.java:143) - <== total: 12019-04-13 05:03:33.749 [debug] org.apache.ibatis.transaction.jdbc.jdbctransaction.resetautocommit(jdbctransaction.java:122) - resetting autocommit to true on jdbc connection [com.mysql.cj.jdbc.connectionimpl@bc84129]2019-04-13 05:03:33.780 [debug] org.apache.ibatis.transaction.jdbc.jdbctransaction.close(jdbctransaction.java:90) - closing jdbc connection [com.mysql.cj.jdbc.connectionimpl@bc84129]2019-04-13 05:03:33.780 [debug] org.apache.ibatis.datasource.pooled.pooleddatasource.pushconnection(pooleddatasource.java:362) - returned connection 197673257 to pool.2019-04-13 05:03:33.781 [debug] org.apache.ibatis.transaction.jdbc.jdbctransaction.openconnection(jdbctransaction.java:136) - opening jdbc connection2019-04-13 05:03:33.781 [debug] org.apache.ibatis.datasource.pooled.pooleddatasource.popconnection(pooleddatasource.java:397) - checked out connection 197673257 from pool.2019-04-13 05:03:33.781 [debug] org.apache.ibatis.transaction.jdbc.jdbctransaction.setdesiredautocommit(jdbctransaction.java:100) - setting autocommit to false on jdbc connection [com.mysql.cj.jdbc.connectionimpl@bc84129]2019-04-13 05:03:33.830 [debug] org.apache.ibatis.logging.jdbc.basejdbclogger.debug(basejdbclogger.java:143) - ==> preparing: select id, role_name, note from t_role4 where id = ? 2019-04-13 05:03:33.831 [debug] org.apache.ibatis.logging.jdbc.basejdbclogger.debug(basejdbclogger.java:143) - ==> parameters: 100(integer)2019-04-13 05:03:33.868 [info ] com.ming.mybatis.stringtypehandler.getresult(stringtypehandler.java:48) - 使用自定義類型,結果獲取列名字符串2019-04-13 05:03:33.870 [info ] com.ming.mybatis.stringtypehandler.getresult(stringtypehandler.java:48) - 使用自定義類型,結果獲取列名字符串2019-04-13 05:03:33.870 [debug] org.apache.ibatis.logging.jdbc.basejdbclogger.debug(basejdbclogger.java:143) - <== total: 12019-04-13 05:03:33.872 [debug] org.apache.ibatis.transaction.jdbc.jdbctransaction.resetautocommit(jdbctransaction.java:122) - resetting autocommit to true on jdbc connection [com.mysql.cj.jdbc.connectionimpl@bc84129]2019-04-13 05:03:33.913 [debug] org.apache.ibatis.transaction.jdbc.jdbctransaction.close(jdbctransaction.java:90) - closing jdbc connection [com.mysql.cj.jdbc.connectionimpl@bc84129]2019-04-13 05:03:33.914 [debug] org.apache.ibatis.datasource.pooled.pooleddatasource.pushconnection(pooleddatasource.java:362) - returned connection 197673257 to pool.2019-04-13 05:03:33.914 [debug] org.apache.ibatis.transaction.jdbc.jdbctransaction.openconnection(jdbctransaction.java:136) - opening jdbc connection2019-04-13 05:03:33.915 [debug] org.apache.ibatis.datasource.pooled.pooleddatasource.popconnection(pooleddatasource.java:397) - checked out connection 197673257 from pool.2019-04-13 05:03:33.915 [debug] org.apache.ibatis.transaction.jdbc.jdbctransaction.setdesiredautocommit(jdbctransaction.java:100) - setting autocommit to false on jdbc connection [com.mysql.cj.jdbc.connectionimpl@bc84129]2019-04-13 05:03:33.956 [debug] org.apache.ibatis.logging.jdbc.basejdbclogger.debug(basejdbclogger.java:143) - ==> preparing: select id, role_name, note from t_role4 where id = ? 2019-04-13 05:03:33.957 [debug] org.apache.ibatis.logging.jdbc.basejdbclogger.debug(basejdbclogger.java:143) - ==> parameters: 100(integer)2019-04-13 05:03:33.994 [info ] com.ming.mybatis.stringtypehandler.getresult(stringtypehandler.java:48) - 使用自定義類型,結果獲取列名字符串2019-04-13 05:03:33.994 [info ] com.ming.mybatis.stringtypehandler.getresult(stringtypehandler.java:48) - 使用自定義類型,結果獲取列名字符串2019-04-13 05:03:33.995 [debug] org.apache.ibatis.logging.jdbc.basejdbclogger.debug(basejdbclogger.java:143) - <== total: 12019-04-13 05:03:33.995 [debug] org.apache.ibatis.transaction.jdbc.jdbctransaction.resetautocommit(jdbctransaction.java:122) - resetting autocommit to true on jdbc connection [com.mysql.cj.jdbc.connectionimpl@bc84129]2019-04-13 05:03:34.029 [debug] org.apache.ibatis.transaction.jdbc.jdbctransaction.close(jdbctransaction.java:90) - closing jdbc connection [com.mysql.cj.jdbc.connectionimpl@bc84129]2019-04-13 05:03:34.029 [debug] org.apache.ibatis.datasource.pooled.pooleddatasource.pushconnection(pooleddatasource.java:362) - returned connection 197673257 to pool.2019-04-13 05:03:34.030 [debug] org.apache.ibatis.transaction.jdbc.jdbctransaction.openconnection(jdbctransaction.java:136) - opening jdbc connection2019-04-13 05:03:34.030 [debug] org.apache.ibatis.datasource.pooled.pooleddatasource.popconnection(pooleddatasource.java:397) - checked out connection 197673257 from pool.2019-04-13 05:03:34.030 [debug] org.apache.ibatis.transaction.jdbc.jdbctransaction.setdesiredautocommit(jdbctransaction.java:100) - setting autocommit to false on jdbc connection [com.mysql.cj.jdbc.connectionimpl@bc84129]2019-04-13 05:03:34.095 [debug] org.apache.ibatis.logging.jdbc.basejdbclogger.debug(basejdbclogger.java:143) - ==> preparing: select id, role_name, note from t_role4 where id = ? 2019-04-13 05:03:34.097 [debug] org.apache.ibatis.logging.jdbc.basejdbclogger.debug(basejdbclogger.java:143) - ==> parameters: 100(integer)2019-04-13 05:03:34.133 [info ] com.ming.mybatis.stringtypehandler.getresult(stringtypehandler.java:48) - 使用自定義類型,結果獲取列名字符串2019-04-13 05:03:34.133 [info ] com.ming.mybatis.stringtypehandler.getresult(stringtypehandler.java:48) - 使用自定義類型,結果獲取列名字符串2019-04-13 05:03:34.134 [debug] org.apache.ibatis.logging.jdbc.basejdbclogger.debug(basejdbclogger.java:143) - <== total: 12019-04-13 05:03:34.134 [debug] org.apache.ibatis.transaction.jdbc.jdbctransaction.resetautocommit(jdbctransaction.java:122) - resetting autocommit to true on jdbc connection [com.mysql.cj.jdbc.connectionimpl@bc84129]2019-04-13 05:03:34.168 [debug] org.apache.ibatis.transaction.jdbc.jdbctransaction.close(jdbctransaction.java:90) - closing jdbc connection [com.mysql.cj.jdbc.connectionimpl@bc84129]2019-04-13 05:03:34.169 [debug] org.apache.ibatis.datasource.pooled.pooleddatasource.pushconnection(pooleddatasource.java:362) - returned connection 197673257 to pool.2019-04-13 05:03:34.170 [debug] org.apache.ibatis.transaction.jdbc.jdbctransaction.openconnection(jdbctransaction.java:136) - opening jdbc connection2019-04-13 05:03:34.170 [debug] org.apache.ibatis.datasource.pooled.pooleddatasource.popconnection(pooleddatasource.java:397) - checked out connection 197673257 from pool.2019-04-13 05:03:34.171 [debug] org.apache.ibatis.transaction.jdbc.jdbctransaction.setdesiredautocommit(jdbctransaction.java:100) - setting autocommit to false on jdbc connection [com.mysql.cj.jdbc.connectionimpl@bc84129]2019-04-13 05:03:34.214 [debug] org.apache.ibatis.logging.jdbc.basejdbclogger.debug(basejdbclogger.java:143) - ==> preparing: select id, role_name, note from t_role4 where id = ? 2019-04-13 05:03:34.215 [debug] org.apache.ibatis.logging.jdbc.basejdbclogger.debug(basejdbclogger.java:143) - ==> parameters: 100(integer)2019-04-13 05:03:34.252 [info ] com.ming.mybatis.stringtypehandler.getresult(stringtypehandler.java:48) - 使用自定義類型,結果獲取列名字符串2019-04-13 05:03:34.252 [info ] com.ming.mybatis.stringtypehandler.getresult(stringtypehandler.java:48) - 使用自定義類型,結果獲取列名字符串2019-04-13 05:03:34.253 [debug] org.apache.ibatis.logging.jdbc.basejdbclogger.debug(basejdbclogger.java:143) - <== total: 12019-04-13 05:03:34.254 [debug] org.apache.ibatis.transaction.jdbc.jdbctransaction.resetautocommit(jdbctransaction.java:122) - resetting autocommit to true on jdbc connection [com.mysql.cj.jdbc.connectionimpl@bc84129]2019-04-13 05:03:34.291 [debug] org.apache.ibatis.transaction.jdbc.jdbctransaction.close(jdbctransaction.java:90) - closing jdbc connection [com.mysql.cj.jdbc.connectionimpl@bc84129]2019-04-13 05:03:34.291 [debug] org.apache.ibatis.datasource.pooled.pooleddatasource.pushconnection(pooleddatasource.java:362) - returned connection 197673257 to pool.2019-04-13 05:03:34.292 [debug] org.apache.ibatis.transaction.jdbc.jdbctransaction.openconnection(jdbctransaction.java:136) - opening jdbc connection2019-04-13 05:03:34.292 [debug] org.apache.ibatis.datasource.pooled.pooleddatasource.popconnection(pooleddatasource.java:397) - checked out connection 197673257 from pool.2019-04-13 05:03:34.292 [debug] org.apache.ibatis.transaction.jdbc.jdbctransaction.setdesiredautocommit(jdbctransaction.java:100) - setting autocommit to false on jdbc connection [com.mysql.cj.jdbc.connectionimpl@bc84129]2019-04-13 05:03:34.336 [debug] org.apache.ibatis.logging.jdbc.basejdbclogger.debug(basejdbclogger.java:143) - ==> preparing: select id, role_name, note from t_role4 where id = ? 2019-04-13 05:03:34.337 [debug] org.apache.ibatis.logging.jdbc.basejdbclogger.debug(basejdbclogger.java:143) - ==> parameters: 100(integer)2019-04-13 05:03:34.379 [info ] com.ming.mybatis.stringtypehandler.getresult(stringtypehandler.java:48) - 使用自定義類型,結果獲取列名字符串2019-04-13 05:03:34.380 [info ] com.ming.mybatis.stringtypehandler.getresult(stringtypehandler.java:48) - 使用自定義類型,結果獲取列名字符串2019-04-13 05:03:34.380 [debug] org.apache.ibatis.logging.jdbc.basejdbclogger.debug(basejdbclogger.java:143) - <== total: 12019-04-13 05:03:34.381 [debug] org.apache.ibatis.transaction.jdbc.jdbctransaction.resetautocommit(jdbctransaction.java:122) - resetting autocommit to true on jdbc connection [com.mysql.cj.jdbc.connectionimpl@bc84129]2019-04-13 05:03:34.415 [debug] org.apache.ibatis.transaction.jdbc.jdbctransaction.close(jdbctransaction.java:90) - closing jdbc connection [com.mysql.cj.jdbc.connectionimpl@bc84129]2019-04-13 05:03:34.415 [debug] org.apache.ibatis.datasource.pooled.pooleddatasource.pushconnection(pooleddatasource.java:362) - returned connection 197673257 to pool. |
ps 類型轉換的問題
總結
以上就是這篇文章的全部內容了，希望本文的內容對大家的學習或者工作具有一定的參考學習價值，謝謝大家對服務器之家的支持。
原文鏈接：https://www.iming.info/mybatis-zi-ding-yi-typehandler/
