Dorado
简单、快速、轻量级的http restful server实现,基于Netty4和JDK1.8+
Features
- HTTP/1.1 and HTTP/1.0协议支持
- 内置JSON/Protobuf序列化支持,JSON序列化框架使用Fastjson, 依赖内置;
如果使用protobuf序列化,需要自行添加protobuf依赖, protobuf版本2.x - Http路由支持, 路由path支持任意的java正则表达式,通过{pathVariable:regex}这种方式支持
- 支持文件上传
- Spring框架支持,默认支持注解方式初始化spring容器
- SpringBoot集成
- 集成swagger restful API文档生成工具
- 过滤器支持,实现类似于spring mvc的interceptor功能
- 支持全局异常处理
- 支持统一响应格式处理
Latest version
0.0.51
Maven
<dependency>
<groupId>ai.houyi</groupId>
<artifactId>dorado-core</artifactId>
<version>${dorado.version}</version>
</dependency>
Quick start
- 最简单的Dorado rest server
public class Application {
public static void main(String[] args) throws Exception {
// create simple rest server, scanPackages现在可选,如果不设置
//系统默认会自动找到main主类所在的包作为basePackage进行扫描
DoradoServerBuilder.forPort(18888).build().start();
}
}
- 更多定制化参数服务器
public class Application {
public static void main(String[] args) throws Exception {
DoradoServerBuilder.forPort(18888).acceptors(2).ioWorkers(4)
.minWorkers(10).maxWorkers(100)
.backlog(1024)
.maxConnection(500).maxPendingRequest(10000)
.maxIdleTime(120).sendBuffer(256 * 1024)
.recvBuffer(256 * 1024)
.scanPackages("com.rtbstack.demo.controller",
"com.rtbstack.demo.controller1")
.build().start();
}
}
-
spring框架支持
DoradoServerBuilder.forPort(port).springOn()
由于框架本身不直接依赖spring框架,如果启用spring之后,务必自行添加spring框架相关依赖到项目中,否则系统启动会出现ClassNotFoundException
public class Application {
public static void main(String[] args) throws Exception {
DoradoServerBuilder.forPort(18888).springOn()
.scanPackages("com.rtbstack.demo",
"com.rtbstack.demo.controller1")
.build().start();
}
}
- Rest Controller
@Controller
@Path("/campaign")
public class CampaignController {
@Path("/{id:[0-9]+}")
@GET
public Campaign newCampaign(int id) {
Campaign campaign = new Campaign();
campaign.setId(id);
campaign.setName("test campaign");
return campaign;
}
@Path("/name")
public String campaignName() {
return String.format("hello_campaign", "");
}
@POST
public Campaign save(Campaign campaign) {
System.out.println(campaign);
return campaign;
}
@Path("/{id}")
@DELETE
public void deleteCampaign(int id) {
System.out.println("delete campaign, id: " + id);
}
@GET
@Path("/{id}")
public Campaign getCampaign(int id) {
return Campaign.builder().withId(12)
.withName("网易考拉推广计划")
.build();
}
}
- Filter
@FilterPath(include = "/campaign/*")
public class DemoFilter implements Filter {
@Override
public boolean preFilter(HttpRequest request, HttpResponse response) {
System.out.println("execute demo filter");
response.sendError(403, "Forbidden");
return false;
}
}
- 文件上传支持
支持文件上传很简单,只需要将controller方法的参数设置未MultipartFile或者MultipartFile[]即可,单文件用MultipartFile,
多文件用MultipartFile[]
@Path("/file/upload")
@POST
public String uploadFile(MultipartFile[] fs,String name) {
for(MultipartFile f:fs) {
System.out.println(f.getName());
System.out.println(f.getContentType());
System.out.println(f.getSize());
}
return String.format("name: %s, file info: %s", name,f.toString());
}
-
全局异常处理
dorado支持用户通过自定义的类来进行全局异常处理,处理异常的方法名必须是handleException,类上面增加ExceptionAdvice注解@ExceptionAdvice public class TestExceptionAdvice { @ExceptionType(MyException.class) @Status(400) //Status注解来指定http响应状态码 public String handleException(MyException ex) { return "cause: " + ex.getClass().getName() + "," + ex.getMessage(); } @ExceptionType(Exception.class) public String handleException(Exception ex) { return "use default exception handler,cause: " + ex.getClass().getName() + "," + ex.getMessage(); } }
-
全局统一响应格式处理
在实际项目开发中,基于rest的服务一般都会定义统一的响应格式,如下面所示格式:{ "code": 0, "data": data, "msg": "OK" }
为了避免在每个方法的时候都要执行相同的处理操作,dorado支持定义一个ai.houyi.dorado.rest.http.MethodReturnValueHandler来
实现这个功能public class TestMethodReturnValueHandler implements MethodReturnValueHandler { @Override public Object handleMethodReturnValue(Object value, MethodDescriptor methodDescriptor) { return TestResp.builder().withCode(0).withMsg("OK").withData(value).build(); } //自定义这个方法实现,用来控制哪些返回值需要被这个类进行处理 public boolean supportsReturnType(MethodDescriptor returnType) { return true; } }
-
More examples
Please visit https://github.com/javagossip/dorado-examples
注解说明
类注解
注解类型 | 描述 |
---|---|
Controller | 控制器 |
Path | 控制器访问Path |
FilterPath | 过滤器过滤路径,包括include以及exclude属性 |
方法注解
注解类型 | 描述 |
---|---|
Path | 资源访问路径,实际访问path为:controllerPath+methodPath |
GET | 方法仅支持Http GET请求 |
POST | 方法仅支持Http POST请求 |
PUT | 方法仅支持HTTP PUT请求 |
DELETE | 方法仅支持HTTP DELETE请求 |
Consume | 方法参数支持的MediaType, 如:application/json |
Produce | 方法响应MediaType, 如:application/json |
方法参数注解
注解类型 | 描述 | 参数支持数据类型 |
---|---|---|
RequestParam | Query or Form parameter | Primitive type&wrapper class,String |
PathVariable | Uri path variable, example: {var} | Primitive type&wrapper class,String |
HeaderParam | Request header value | Primitive type&wrapper class,String |
CookieParam | Request cookie value | Primitive type&wrapper class,String |
RequestBody | Http request body | String, byte[],InputStream or any serializable type |
内置服务
- Get Server configuration: http://{ip}:{port}/config
- Get Server status: http://{ip}:{port}/status
- List All services: http://{ip}:{port}/services
SpringBoot集成
-
添加dorado-spring-boot-starter核心依赖
<dependency> <groupId>ai.houyi</groupId> <artifactId>dorado-spring-boot-starter</artifactId> <version>${dorado.version}</version> </dependency>
-
基于springboot的dorado应用
@SpringBootApplication @EnableDorado //用这个注解开启dorado server public class SpringBootApplication { public static void main(String[] args) throws Exception { SpringApplication.run(SpringBootApplication.class, args); } }
或者直接使用DoradoSpringBootApplication来替换SpringBootApplication和EnableDorado,如下:
@DoradoSpringBootApplication public class SpringBootApplication { public static void main(String[] args) throws Exception { SpringApplication.run(SpringBootApplication.class, args); } }
-
Dorado框架的spring-boot配置参数
参数名 描述 默认值 dorado.port dorado server监听端口 18888 dorado.backlog backlog队列大小 10000 dorado.acceptors dorado acceptor count cpu核心数*2 dorado.io-workers dorado io worker count cpu核心数*2 dorado.min-workers 业务线程池最小线程数 100 dorado.max-workers 业务线程池最大线程数 100 dorado.max-connections 服务器最大连接数 100000 dorado.max-pending-request 业务线程池队列长度 10000 dorado.send-buffer send buffer size 256k dorado.recv-buffer recv buffer size 256k dorado.max-idle-time 连接最大空闲时间 8h dorado.max-packet-length http请求包体大小 1M
swagger集成
如果对swagger还不了解的话,参考:https://swagger.io/
- 添加dorado-swagger-ui依赖
<dependency>
<groupId>ai.houyi</groupId>
<artifactId>dorado-swagger-ui</artifactId>
<version>${dorado.version}</version>
</dependency>
- 项目启动类中使用EnableSwagger注解启用swagger
@EnableSwagger
public class Application {
public static void main(String[] args) throws Exception {
// create simple rest server
DoradoServerBuilder.forPort(18888).maxPacketLength(1024*1024*10)
.build().start();
}
}
- 设置Api文档全局信息
实现ai.houyi.dorado.swagger.ext.ApiContextBuilder接口
@Component //如果是集成spring或springboot环境的话,直接增加component注解即可
@Override
// 这里定制Api全局信息,如文档描述、license,contact等信息
public ApiContext buildApiContext() {
Info info = new Info()
.contact(new Contact().email("[email protected]").name("weiping wang")
.url("http://github.com/javagossip/dorado"))
.license(new License().name("apache v2.0").url("http://www.apache.org"))
.termsOfService("http://swagger.io/terms/").description("Dorado服务框架api接口文档")
.title("dorado demo api接口文档").version("1.0.0");
//构造api访问授权的apiKey
ApiKey apiKey = ApiKey.builder().withName("Authorization").withIn("header").build();
ApiContext apiContext = ApiContext.builder().withApiKey(apiKey)
.withInfo(info).build();
return apiContext;
}
非spring环境需要在resources/META-INF/services下的ai.houyi.dorado.swagger.ext.ApiContextBuilder文件中增加如下配置:
ai.houyi.dorado.demo.ApiContextBuilderImpl
- 在controller实现里面增加swagger相关的注解即可自动生成在线的api doc
@Controller
@Path("/campaign")
@Api(tags = { "营销活动管理" })
public class CampaignController {
@Autowired
private CampaignService campaignService;
@Path("/{id:[0-9]+}")
@GET
@ApiOperation("新建campaign")
public Campaign newCampaign(@PathVariable("id") int id) {
Campaign campaign = new Campaign();
campaign.setId(id);
campaign.setName("test campaign");
return campaign;
}
}
-
spring-boot环境,可以直接引入dorado-swagger-spring-boot-starter依赖来进一步简化swagger的使用
<dependency> <groupId>ai.houyi</groupId> <artifactId>dorado-swagger-spring-boot-starter</artifactId> <version>${dorado.version}</version> </dependency>
然后在application.properties配置文件中增加如下配置即可:
dorado.swagger.title=Zhuque's dashboard api dorado.swagger.description=${dorado.swagger.title} dorado.swagger.license=Apache License dorado.swagger.licenseUrl=http://www.apache.org/licenses/LICENSE-2.0 dorado.swagger.contact.name=weiping wang [email protected] dorado.swagger.contact.url=https://github.com/javagossip //API全局认证配置 dorado.swagger.apiKey.name=Authorization dorado.swagger.apiKey.in=header or query
- 浏览器访问如下地址即可
http://{host}:{port}/swagger-ui.html