Spring boot + mybatis 只读取到一个jar包中的mapper配置文件

Posted 2021-02-06 江南叶少

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)};
        }
    }