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[TOC]


### 1.檢查xml文件所在package名稱是否和Mapper interface所在的包名

![](https://box.kancloud.cn/bb7e4f40d4177e3a0e1a4fb37b2fdb56_1585x352.png)

### 2. 方法名，方法參數與xml文件對應不上
### 3. xml文件根本就沒有被容器掃描到

springboot配置如下：掃描mapper.java和mapper.xml文件。
![](https://box.kancloud.cn/4033c18f6121d2d6ab09498debc680f7_866x466.png)

### 4. xml沒有被編譯進項目
![](https://box.kancloud.cn/abbdb8a533d2885ddf740272a7fcfdef_515x431.png)

maven中增加一下配置，將xml一起打包編譯：會將src/main/java下的xml文件隨同java編譯后的class文件一同copy到相應的class目錄

~~~
<resources>
    <resource>
        <directory>src/main/java</directory>
        <includes>
            <include>**/*.xml</include>
        </includes>
    </resource>
</resources>
~~~
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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