Mabatis_配置中出现的error

Posted 2020-09-18 charles999

1. 不区分大小写

<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=精彩内容, content=精彩内容]
Message [id=2, command=段子, description=精彩段子, content=如果你的月薪是3000块钱，请记得分成五份，一份用来买书，一份给家人，一份给女朋友买化妆品和衣服，一份请朋友们吃饭，一份作为同事的各种婚丧嫁娶的份子钱。剩下的2999块钱藏起来，不要告诉任何人]
Message [id=3, command=新闻, description=今日头条, content=7月17日，马来西亚一架载有298人的777客机在乌克兰靠近俄罗斯边界坠毁。另据国际文传电讯社消息，坠毁机型为一架波音777客机，机载约280名乘客和15个机组人员。
乌克兰空管部门随后证实马航MH17航班坠毁。乌克兰内政部幕僚表示，这一航班在顿涅茨克地区上空被击落。马来西亚航空公司确认，该公司从阿姆斯特丹飞往吉隆坡的MH17航班失联，并称最后与该客机取得联系的地点在乌克兰上空。图为马航客机坠毁现场。]
Message [id=4, command=娱乐, description=娱乐新闻, content=昨日，邓超在微博分享了自己和孙俪的书法。夫妻同样写幸福，但差距很大。邓超自己都忍不住感慨字丑：左边媳妇写的。右边是我写的。看完我再也不幸福了。]
Message [id=6, command=彩票, description=中奖号码, content=查啥呀查，你不会中奖的！]

 

2. jdbcType打错了

<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="VARCHER" property="content"/>
  </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写错了

    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