一、问题

eclipse启动时报下面的错误:

Caused by: java.lang.IllegalArgumentException: Caches collection already contains value for com.crm.dao.PaperUserMapper
    at org.apache.ibatis.session.Configuration$StrictMap.put(Configuration.java:782) ~[mybatis-3.2.7.jar:3.2.7]
    at org.apache.ibatis.session.Configuration$StrictMap.put(Configuration.java:754) ~[mybatis-3.2.7.jar:3.2.7]
    at org.apache.ibatis.session.Configuration.addCache(Configuration.java:516) ~[mybatis-3.2.7.jar:3.2.7]
    at org.apache.ibatis.builder.MapperBuilderAssistant.useNewCache(MapperBuilderAssistant.java:132) ~[mybatis-3.2.7.jar:3.2.7]
    at org.apache.ibatis.builder.xml.XMLMapperBuilder.cacheElement(XMLMapperBuilder.java:209) ~[mybatis-3.2.7.jar:3.2.7]
    at org.apache.ibatis.builder.xml.XMLMapperBuilder.configurationElement(XMLMapperBuilder.java:114) ~[mybatis-3.2.7.jar:3.2.7]
    ... 82 common frames omitted


二、解决

    a.检查命名空间、别名是否正确

    b.检查mapper.xml和mapper.java中是否有重复的

我这里是因为项目mapper.xml中出现重复的,修改后问题成功解决。小建议:把insert、select这些标签折起来,然后看看id属性是不是有重复的。


三、参考文献

https://blog.csdn.net/prader/article/details/80547010

https://blog.csdn.net/zengdeqing2012/article/details/46340357

mybatis报错:Caused by: java.lang.IllegalArgumentException: Caches collection already contains value for com.crm.dao.PaperUserMapper的更多相关文章

  1. springboot整合mybatis的时候报错Caused by: java.lang.IllegalArgumentException: Property 'sqlSessionFactory' or 'sqlSessionTemplate' are required

    今天闲来无事,学习springboot整合mybatis,在bilibili看视频学的,视频中在dao层的interface上面加上org.apache.ibatis.annotations.Mapp ...

  2. springcloud中config启动时候报错Caused by: java.lang.IllegalArgumentException: Could not resolve placeholder 'config.info' in value "${config.info}"

    -noverify -Dspring.output.ansi.enabled=always -Dcom.sun.management.jmxremote -Dcom.sun.management.jm ...

  3. SpringBoot启动报:Caused by: java.lang.IllegalArgumentException: At least one JPA metamodel must be present!

    使用spring boot对项目改造,启动报错: Caused by: java.lang.IllegalArgumentException: At least one JPA metamodel m ...

  4. kettle添加hadoop cluster时报错Caused by: java.lang.IllegalArgumentException: Does not contain a valid host:port authority: hadoop:password@node56:9000

    完整报错是: Caused by: java.lang.IllegalArgumentException: Does not contain a valid host:port authority: ...

  5. 【spring boot】【elasticsearch】spring boot整合elasticsearch,启动报错Caused by: java.lang.IllegalStateException: availableProcessors is already set to [8], rejecting [8

    spring boot整合elasticsearch, 启动报错: Caused by: java.lang.IllegalStateException: availableProcessors ], ...

  6. tomcat使用cookies缓存的时候中文报错解决办法 java.lang.IllegalArgumentException: Control character in cookie value or attribute.

    报错出现 java.lang.IllegalArgumentException: Control character in cookie value or attribute. at org.apac ...

  7. javafx:JavaFX Scene Builder 2.0打开含有第三方jar包的fxml文件报错 Caused by: java.lang.ClassNotFoundException

    报错如下: java.io.IOException: javafx.fxml.LoadException: /C:/User.................test.fxml at com.orac ...

  8. 【原创】大叔问题定位分享(8)提交spark任务报错 Caused by: java.lang.ClassNotFoundException: org.I0Itec.zkclient.exception.ZkNoNodeException

    spark 2.1.1 一 问题重现 spark-submit --master local[*] --class app.package.AppClass --jars /jarpath/zkcli ...

  9. Feign调用远程服务报错:Caused by: java.lang.IllegalStateException: Method getMemberInfo not annotated with HTTP method type (ex. GET, POST)

    org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'ord ...

随机推荐

  1. 【CSS 第六天】三种简历

    1.盒子模型 2.三种简历 利用float和CSS制作内容一致,但是样式不一致的三种简历. 代码 3.效果 style-1 3.2效果2 效果三

  2. react-native-upgrade-android

    React Native的版本升级插件(仅是android), react-native版本需要0.17.0及以上 如何安装 1.首先安装npm包 npm install react-native-u ...

  3. python—迭代器、生成器

    1.迭代器(iteration) 迭代器协议:提供next()方法,该方法要么返回迭代的下一项,要么异常.(只能往后走) 可迭代对象:实现迭代器协议的对象. **字符串.列表.元祖.字典.集合.文件都 ...

  4. charles-web端开发者实用功能点

    ##网速模拟功能 throttle功能对于前端来说非常实用,可以看页面在低网速下的表现,从而找出优化的点. 在线上环境通常有些因为网速慢导致的bug,在本机无法重现,那时候就很抓瞎,如果嫌远程麻烦,推 ...

  5. 坦白说bug

    安卓收藏他发的图片就可以在收藏里看到了哦 苹果直接搜索聊天记录就行了哦(人 •͈ᴗ•͈)۶♡♡比心心

  6. 数据库sql常见优化方法

    以前刚开始做项目的时候,开发经验尚浅,每次遇到查询比较慢时,项目经理就会问:是不是又用select * 了?查询条件有没有加索引?一语惊醒梦中人,赶紧检查..果然如此! 有时我们写sql语句时,没有考 ...

  7. [Swift]LeetCode162. 寻找峰值 | Find Peak Element

    A peak element is an element that is greater than its neighbors. Given an input array nums, where nu ...

  8. [Swift]LeetCode735. 行星碰撞 | Asteroid Collision

    We are given an array asteroids of integers representing asteroids in a row. For each asteroid, the ...

  9. python判断文件是否存在

    # 判断文件是否存在 def judgejson(jsonpath): # 如果存在就返回True,不存在就返回False return os.path.exists(jsonpath)

  10. Session知识点

    知识点概要    - Session    - CSRF    - Model操作    - Form验证(ModelForm)    - 中间件    - 缓存    - 信号 内容详细: 1. S ...