简单、快速、轻量级的http restful server实现,基于Netty4和JDK1.8+
0.0.51
<dependency>
<groupId>ai.houyi</groupId>
<artifactId>dorado-core</artifactId>
<version>${dorado.version}</version>
</dependency>
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();
}
}
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();
}
}
@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();
}
}
@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;
}
}
@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 |
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 |
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 |
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 |
如果对swagger还不了解的话,参考:[https://swagger.io/]()
<dependency>
<groupId>ai.houyi</groupId>
<artifactId>dorado-swagger-ui</artifactId>
<version>${dorado.version}</version>
</dependency>
@EnableSwagger
public class Application {
public static void main(String[] args) throws Exception {
// create simple rest server
DoradoServerBuilder.forPort(18888).maxPacketLength(1024*1024*10)
.build().start();
}
}
@Component //如果是集成spring或springboot环境的话,直接增加component注解即可
@Override
// 这里定制Api全局信息,如文档描述、license,contact等信息
public ApiContext buildApiContext() {
Info info = new Info()
.contact(new Contact().email("[email protected]").name("weiping wang")
.url("http://github.com/javagossip/dorado"))
.license(new License().name("apache v2.0").url("http://www.apache.org"))
.termsOfService("http://swagger.io/terms/").description("Dorado服务框架api接口文档")
.title("dorado demo api接口文档").version("1.0.0");
//构造api访问授权的apiKey
ApiKey apiKey = ApiKey.builder().withName("Authorization").withIn("header").build();
ApiContext apiContext = ApiContext.builder().withApiKey(apiKey)
.withInfo(info).build();
return apiContext;
}
非spring环境需要在resources/META-INF/services下的ai.houyi.dorado.swagger.ext.ApiContextBuilder文件中增加如下配置:
ai.houyi.dorado.demo.ApiContextBuilderImpl
@Controller
@Path("/campaign")
@Api(tags = { "营销活动管理" })
public class CampaignController {
@Autowired
private CampaignService campaignService;
@Path("/{id:[0-9]+}")
@GET
@ApiOperation("新建campaign")
public Campaign newCampaign(@PathVariable("id") int id) {
Campaign campaign = new Campaign();
campaign.setId(id);
campaign.setName("test campaign");
return campaign;
}
}
spring-boot环境,可以直接引入dorado-swagger-spring-boot-starter依赖来进一步简化swagger的使用
<dependency>
<groupId>ai.houyi</groupId>
<artifactId>dorado-swagger-spring-boot-starter</artifactId>
<version>${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