Mapped Statements collection does not contain value for...

Spring整合mybatis main方法测试报错：

Exception in thread "main" java.lang.IllegalArgumentException: Mapped Statements collection does not contain value for com.Product.dao.ProductMapper.getAllProduct

at org.apache.ibatis.session.Configuration$StrictMap.get(Configuration.java:593)

at org.apache.ibatis.session.Configuration.getMappedStatement(Configuration.java:393)

at org.apache.ibatis.binding.MapperMethod.setupCommandType(MapperMethod.java:160)

at org.apache.ibatis.binding.MapperMethod.<init>(MapperMethod.java:48)

at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:37)

at $Proxy9.getAllProduct(Unknown Source)

at com.Product.service.ProductService.getAllProduct(ProductService.java:16)

at com.Product.service.ProductService$$FastClassByCGLIB$$59bee94b.invoke(<generated>)

at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:191)

 

错误原因：DAO层下xml里的namespace配置不正确或者干脆没有配置namespace

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