Mabatis_配置中出現的error
1. 不區分大小寫
<mapper namespace="Message">
<resultMap type="com.imooc.bean.Message" id="MessageResult">
<id column="id" jdbcType="INTEGER" property="id"/>
<result column="COMMAND" jdbcType="VARCHAR" property="command"/>
<result column="DESCRIPTION" jdbcType="VARCHAR" property="description"/>
<result column="CONTENT" jdbcType="VARCHAR" property="content"/>
</resultMap>
<select id="queryMessageList" parameterType="com.imooc.bean.Message" resultMap="MessageResult">
select ID,COMMAND,DESCRIPTION,CONTENT from MESSAGE
</select>
</mapper>
2017-05-17 11:25:34,859 [main] DEBUG [Message.queryMessageList] - ==> Preparing: select ID,COMMAND,DESCRIPTION,CONTENT from MESSAGE 2017-05-17 11:25:34,892 [main] DEBUG [Message.queryMessageList] - ==> Parameters: 2017-05-17 11:25:34,917 [main] DEBUG [Message.queryMessageList] - <== Total: 5 Message [id=1, command=查看, description=精彩內容, content=精彩內容] Message [id=2, command=段子, description=精彩段子, content=如果你的月薪是3000塊錢，請記得分成五份，一份用來買書，一份給家人，一份給女朋友買化妝品和衣服，一份請朋友們吃飯，一份作為同事的各種婚喪嫁娶的份子錢。剩下的2999塊錢藏起來，不要告訴任何人] Message [id=3, command=新聞, description=今日頭條, content=7月17日，馬來西亞一架載有298人的777客機在烏克蘭靠近俄羅斯邊界墜毀。另據國際文傳電訊社消息，墜毀機型為一架波音777客機，機載約280名乘客和15個機組人員。 烏克蘭空管部門隨後證實馬航MH17航班墜毀。烏克蘭內政部幕僚表示，這一航班在頓涅茨克地區上空被擊落。馬來西亞航空公司確認，該公司從阿姆斯特丹飛往吉隆坡的MH17航班失聯，並稱最後與該客機取得聯系的地點在烏克蘭上空。圖為馬航客機墜毀現場。] Message [id=4, command=娛樂, description=娛樂新聞, content=昨日，鄧超在微博分享了自己和孫儷的書法。夫妻同樣寫幸福，但差距很大。鄧超自己都忍不住感慨字醜：左邊媳婦寫的。右邊是我寫的。看完我再也不幸福了。] Message [id=6, command=彩票, description=中獎號碼, content=查啥呀查，你不會中獎的！]
2. jdbcType打錯了
<mapper namespace="Message">
<resultMap type="com.imooc.bean.Message" id="MessageResult">
<id column="id" jdbcType="INTEGER" property="id"/>
<result column="COMMAND" jdbcType="VARCHAR" property="command"/>
<result column="DESCRIPTION" jdbcType="VARCHAR" property="description"/>
<result column="CONTENT" jdbcType="VARCHE
</resultMap>
<select id="queryMessageList" parameterType="com.imooc.bean.Message" resultMap="MessageResult">
select ID,COMMAND,DESCRIPTION,CONTENT from MESSAGE
</select>
</mapper>
Exception in thread "main" org.apache.ibatis.exceptions.PersistenceException:
### Error building SqlSession.
### The error may exist in com/imooc/config/sqlxml/Message.xml
### The error occurred while processing mapper_resultMap[MessageResult]
### Cause: org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. Cause: org.apache.ibatis.builder.BuilderException: Error resolving JdbcType. Cause: java.lang.IllegalArgumentException: No enum constant org.apache.ibatis.type.JdbcType.VARCHER
at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:30)
at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:52)
at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:36)
at com.imooc.DB.DBAccess.getSqlSession(DBAccess.java:17)
at com.imooc.Dao.MessageDao.query(MessageDao.java:28)
at com.imooc.Dao.MessageDao.main(MessageDao.java:15)
Caused by: org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. Cause: org.apache.ibatis.builder.BuilderException: Error resolving JdbcType. Cause: java.lang.IllegalArgumentException: No enum constant org.apache.ibatis.type.JdbcType.VARCHER
at org.apache.ibatis.builder.xml.XMLConfigBuilder.parseConfiguration(XMLConfigBuilder.java:120)
at org.apache.ibatis.builder.xml.XMLConfigBuilder.parse(XMLConfigBuilder.java:98)
at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:50)
... 4 more
Caused by: org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. Cause: org.apache.ibatis.builder.BuilderException: Error resolving JdbcType. Cause: java.lang.IllegalArgumentException: No enum constant org.apache.ibatis.type.JdbcType.VARCHER
at org.apache.ibatis.builder.xml.XMLMapperBuilder.configurationElement(XMLMapperBuilder.java:120)
at org.apache.ibatis.builder.xml.XMLMapperBuilder.parse(XMLMapperBuilder.java:92)
at org.apache.ibatis.builder.xml.XMLConfigBuilder.mapperElement(XMLConfigBuilder.java:369)
at org.apache.ibatis.builder.xml.XMLConfigBuilder.parseConfiguration(XMLConfigBuilder.java:118)
... 6 more
Caused by: org.apache.ibatis.builder.BuilderException: Error resolving JdbcType. Cause: java.lang.IllegalArgumentException: No enum constant org.apache.ibatis.type.JdbcType.VARCHER
at org.apache.ibatis.builder.BaseBuilder.resolveJdbcType(BaseBuilder.java:73)
at org.apache.ibatis.builder.xml.XMLMapperBuilder.buildResultMappingFromContext(XMLMapperBuilder.java:382)
at org.apache.ibatis.builder.xml.XMLMapperBuilder.resultMapElement(XMLMapperBuilder.java:280)
at org.apache.ibatis.builder.xml.XMLMapperBuilder.resultMapElement(XMLMapperBuilder.java:252)
at org.apache.ibatis.builder.xml.XMLMapperBuilder.resultMapElements(XMLMapperBuilder.java:244)
at org.apache.ibatis.builder.xml.XMLMapperBuilder.configurationElement(XMLMapperBuilder.java:116)
... 9 more
Caused by: java.lang.IllegalArgumentException: No enum constant org.apache.ibatis.type.JdbcType.VARCHER
at java.lang.Enum.valueOf(Enum.java:238)
at org.apache.ibatis.type.JdbcType.valueOf(JdbcType.java:25)
at org.apache.ibatis.builder.BaseBuilder.resolveJdbcType(BaseBuilder.java:71)
... 14 more
3.mapper的SQL ID寫錯了
public static List<Message> query() {
DBAccess dbaccess = new DBAccess();
List<Message> messageList = new ArrayList<Message>();
SqlSession session =null;
try {
Message m =new Message();
session = dbaccess.getSqlSession();
messageList = session.selectList("Message.queryMessageList",m);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally{
if(session != null){
session.close();
}
}
if (messageList == null) System.out.println("message is null");
return messageList;
}
<select id="MessageList" parameterType="com.imooc.bean.Message" resultMap="MessageResult"> select ID,COMMAND,DESCRIPTION,CONTENT from MESSAGE </select>
Exception in thread "main" org.apache.ibatis.exceptions.PersistenceException:
### Error querying database. Cause: java.lang.IllegalArgumentException: Mapped Statements collection does not contain value for Message.queryMessageList
### Cause: java.lang.IllegalArgumentException: Mapped Statements collection does not contain value for Message.queryMessageList
at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:30)
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:150)
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:141)
at com.imooc.Dao.MessageDao.query(MessageDao.java:29)
at com.imooc.Dao.MessageDao.main(MessageDao.java:15)
Caused by: java.lang.IllegalArgumentException: Mapped Statements collection does not contain value for Message.queryMessageList
at org.apache.ibatis.session.Configuration$StrictMap.get(Configuration.java:875)
at org.apache.ibatis.session.Configuration.getMappedStatement(Configuration.java:708)
at org.apache.ibatis.session.Configuration.getMappedStatement(Configuration.java:701)
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:147)
... 3 more
Mabatis_配置中出現的error