都对着,为什么会报这个错呢,mapper也拿到了,为什么查询时出错呢,最后看target里编译的文件发现少了mapping,xml没编译过去。
我的目录结构:dao层都编译过去了,但mapper.xml没有,那就是编译没包含进去
解决方法:pom文件里加上就好了。(然而并没有)
<build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> <resources> <resource> <directory>src/main/resources</directory> </resource> <resource> <directory>src/main/java</directory> <includes> <include>**/*.xml</include> </includes> </resource> </resources> </build>
好高兴的看到target里有了xml文件,但是启动还是报错了,Caused by: java.io.FileNotFoundException: Could not open ServletContext resource [/classpath*:com/wskt/module/*/dao/mapping/**Mapper.xml]
原因:
这样一个流程调下去,路径没有得到解析,所以找不到,
如果在配置类里就可以:
@Bean @ConfigurationProperties(prefix = "mybatis-plus") public SqlSessionFactoryBean sqlSessionFactory() throws IOException { SqlSessionFactoryBean sqlSessionFactoryBean = new SqlSessionFactoryBean(); sqlSessionFactoryBean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources("com/wskt/module/*/dao/mapping/**Mapper.xml")); sqlSessionFactoryBean.setDataSource(dynamicDataSource()); return sqlSessionFactoryBean; }
原因找到了,就看怎么指定PathMatchingResourcePatternResolver