c# autofac结合WebApi的使用

一、下载相关类库引用

　　install-package autofac

　　install-package autofac.mvc4

　　install-package autofac.webapi2

 

二、配置autofac

 public class autofacutil
    {
        /// <summary>
        /// autofac容器对象
        /// </summary>
        private static icontainer _container;

        /// <summary>
        /// 初始化autofac
        /// </summary>
        public static void initautofac()
        {
            var builder = new containerbuilder();

            builder.registercontrollers(assembly.getcallingassembly());
            builder.registerapicontrollers(assembly.getcallingassembly());

            //配置接口依赖
            builder.registerinstance<idbconnection>(dbfactory.createconnection()).as<idbconnection>();
            builder.registergeneric(typeof(genericrepository<>)).as(typeof(igenericrepository<>));
            //注入仓储类
            builder.registerassemblytypes(assembly.load("demo.repository"))
                   .where(x => x.name.endswith("repository"))
                   .asimplementedinterfaces();

            _container = builder.build();

            //设置mvc依赖注入
            dependencyresolver.setresolver(new autofacdependencyresolver(_container));

            //设置webapi依赖注入
            globalconfiguration.configuration.dependencyresolver = new autofacwebapidependencyresolver((icontainer)_container);
        }

        /// <summary>
        /// 从autofac容器获取对象
        /// </summary>
        /// <typeparam name="t"></typeparam>
        /// <returns></returns>
        public static t getfromfac<t>()
        {
            return _container.resolve<t>();
        }
    }

 

三、注册autofac

　　在global.asax全局文件中application_start方法添加代码

autofacutil.initautofac();

 

四、使用案例

 public class codecontroller : baseapicontroller
    {
        private readonly ismcoderepository _smcoderepository;
        public codecontroller(ismcoderepository smcoderepository)
        {
            _smcoderepository = smcoderepository;
        }

        /// <summary>
        /// 获取数据字典数据列表
        /// </summary>
        /// <param name="codetypeno">数据字典字典类型代码</param>
        /// <returns></returns>
        [httppost]
        public apiresult getcodelist(smcodetype codetypeentity)
        {
            var result = _smcoderepository.getcodelist(codetypeentity.codetypeno);
            return new apiresult() { data = result.select(x => new { x.codeno, x.codename }) };
        }
    }