采用spring boot 开发了一个多模块项目，有多个模块中都有mapper配置文件。
采用如下的方式配置，制度去到了一个模块jar包中配置文件：
@Bean(name = "sqlSessionFactory") public SqlSessionFactory sqlSessionFactoryBean() { SqlSessionFactoryBean bean = new SqlSessionFactoryBean(); bean.setDataSource(dataSource); bean.setTypeAliasesPackage("tk.mybatis.springboot.model"); MybatisInterceptor interceptor = new MybatisInterceptor(); bean.setPlugins(new Interceptor[]{interceptor}); //添加XML目录 ResourcePatternResolver resolver = new PathMatchingResourcePatternResolver(); try { //\com\tritrust\t\core\dict\sqlmap //\com\tritrust\t\system\sqlmap bean.setMapperLocations(resolver.getResources("classpath:com/tritrust/t/**/sqlmap/*.xml")); return bean.getObject(); } catch (Exception e) { e.printStackTrace(); throw new RuntimeException(e); } }
需要读取多个jar里面的配置需要修改配置路径为：
bean.setMapperLocations(resolver.getResources("classpath*:com/tritrust/t/**/sqlmap/*.xml"));
classpath*:就可以读取多个jar里面文件了。
查看spring core 中org.springframework.core.io.support.PathMatchingResourcePatternResolver类有如下代码：
public Resource[] getResources(String locationPattern) throws IOException { Assert.notNull(locationPattern, "Location pattern must not be null"); if (locationPattern.startsWith("classpath*:")) { return this.getPathMatcher().isPattern(locationPattern.substring("classpath*:".length())) ? this.findPathMatchingResources(locationPattern) : this.findAllClassPathResources(locationPattern.substring("classpath*:".length())); } else { int prefixEnd = locationPattern.startsWith("war:") ? locationPattern.indexOf("*/") + 1 : locationPattern.indexOf(58) + 1; return this.getPathMatcher().isPattern(locationPattern.substring(prefixEnd)) ? this.findPathMatchingResources(locationPattern) : new Resource[]{this.getResourceLoader().getResource(locationPattern)}; } }