javalin实现restful接口并集成swagger设置header字段

Posted 2022-11-06 tower888

javalin实现restful接口并集成swagger设置header字段

 

配置依赖

dependencies 
    implementation fileTree(dir: "lib", include: ['*.jar'])
    implementation 'cn.hutool:hutool-all:5.3.5'
    implementation 'io.javalin:javalin-bundle:4.1.1'
    
    implementation 'com.alibaba:druid:1.2.6'
    implementation 'org.mybatis:mybatis:3.5.4'
    runtimeOnly 'com.oracle:ojdbc6:11.2.0.3'

    compileOnly 'org.projectlombok:lombok:1.18.12'
    annotationProcessor 'org.projectlombok:lombok:1.18.12'
    
    //implementation 'io.springfox:springfox-swagger-ui:3.0.0'
    //implementation 'io.springfox:springfox-swagger2:3.0.0'
    

代码中增加OpenApiPlugin ,增加swagger的支持

package com.soft;

import java.util.concurrent.TimeUnit;

import org.eclipse.jetty.http.HttpStatus;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.soft.config.HeaderParam;
import com.soft.config.Router;
import com.soft.config.ServerConf;
import com.soft.controller.TestController;
import com.soft.controller.UserController;
import com.soft.event.EventListener;
import com.soft.exception.AppException;
import com.soft.exception.BaseException;
import com.soft.util.CacheUtil;
import com.soft.util.ErrorType;
import com.soft.util.RetResult;

import cn.hutool.core.util.RandomUtil;
import cn.hutool.core.util.StrUtil;
import io.javalin.Javalin;
import io.javalin.apibuilder.ApiBuilder;
import io.javalin.http.util.NaiveRateLimit;
import io.javalin.plugin.openapi.InitialConfigurationCreator;
import io.javalin.plugin.openapi.OpenApiOptions;
import io.javalin.plugin.openapi.OpenApiPlugin;
import io.javalin.plugin.openapi.ui.ReDocOptions;
import io.javalin.plugin.openapi.ui.SwaggerOptions;
import io.swagger.v3.oas.models.Components;
import io.swagger.v3.oas.models.OpenAPI;
import io.swagger.v3.oas.models.info.Info;
import io.swagger.v3.oas.models.security.SecurityScheme;

public class AppStart 

	private static final Logger log = LoggerFactory.getLogger(AppStart.class);

	public static void main(String[] args) 
		Javalin app = Javalin.create(config -> 
			config.registerPlugin(getConfiguredOpenApiPlugin());
			config.defaultContentType = "application/json";
		

		).start(ServerConf.getVo().getPort());
		CacheUtil.eventBus.register(new EventListener());
		beforeHandle(app);
		afterHandle(app);
		exceptionHandle(app);
		app.routes(() -> 
			ApiBuilder.get(Router.ping, TestController::ping);
			ApiBuilder.post(Router.verifyPwd, UserController::verifyPwd);
		);
	

	private static OpenApiPlugin getConfiguredOpenApiPlugin() 
		// swagger-ui中输入框传入请求头参数验证
		// controller中每个接口方法中必须增加@OpenApiSecurity注解才能生效
		InitialConfigurationCreator init = () -> 
			Components comps = new Components();
			comps.addSecuritySchemes(HeaderParam.X_APP_ID, buildSecurityScheme(HeaderParam.X_APP_ID))
					.addSecuritySchemes(HeaderParam.X_APP_KEY, buildSecurityScheme(HeaderParam.X_APP_KEY));

			return new OpenAPI().info(new Info().version("1.0").description("接口")).components(comps);
		;

		OpenApiOptions options = new OpenApiOptions(init).activateAnnotationScanningFor("com.soft.controller")
				.path("/swagger-docs") // endpoint for OpenAPI json
				.swagger(new SwaggerOptions("/swagger")) // endpoint for swagger-ui
				.reDoc(new ReDocOptions("/redoc")) // endpoint for redoc
				.defaultDocumentation(doc -> 
//					doc.json("500", ErrorResponse.class);
//					doc.json("503", ErrorResponse.class);
				);

		return new OpenApiPlugin(options);
	

	private static SecurityScheme buildSecurityScheme(String name) 
		return new SecurityScheme().type(SecurityScheme.Type.APIKEY)
				.in(SecurityScheme.In.HEADER).name(name);
	

	private static void beforeHandle(Javalin app) 
		app.before("/*", ctx -> 
			// throws if rate limit is exceeded
			NaiveRateLimit.requestPerTimeUnit(ctx, ServerConf.getVo().getX_RateLimit_Limit(), TimeUnit.SECONDS);

			String logid = RandomUtil.randomString(5);
			ctx.attribute("logid", logid);
			String ip = ctx.ip();
			String path = ctx.path();

			if (path.contains("/test/ping") || path.contains("/swagger")) 
				return;
			
			String body = ctx.body();
			String reqid = ctx.header(HeaderParam.X_CTG_Request_ID);

			log.info("reqid:||REQ ip:,path:,body:", reqid, logid, ip, path, body);

			String x_app_id = ctx.req.getHeader(HeaderParam.X_APP_ID);
			String x_app_key = ctx.req.getHeader(HeaderParam.X_APP_KEY);
			if (StrUtil.isBlank(x_app_id) || StrUtil.isBlank(x_app_key)) 
				String msg = "请求头中 X-APP-ID, X-APP-KEY 必须传送";
				throw new AppException(ErrorType.BadReq, msg);
			
			if (!StrUtil.equalsIgnoreCase(x_app_id, ServerConf.getVo().getX_APP_ID())) 
				String msg = "请求头中X-APP-ID与服务端配置不同";
				throw new AppException(ErrorType.BadReq, msg);
			
			if (!StrUtil.equalsIgnoreCase(x_app_key, ServerConf.getVo().getX_APP_KEY())) 
				String msg = "请求头中X-APP-KEY与服务端配置不同";
				throw new AppException(ErrorType.BadReq, msg);
			

		);
	

	private static void afterHandle(Javalin app) 
		app.after("/*", ctx -> 
			// 2.1.7请求跟踪, 设置与请求头相同的值
			String reqid = ctx.req.getHeader(HeaderParam.X_CTG_Request_ID);
			ctx.res.addHeader("X-CTG-Request-ID", reqid);
			String logid = ctx.attribute("logid");
			log.info("reqid:||RSP status: body:", reqid, logid, ctx.status(), ctx.resultString());
		);
	

	private static void exceptionHandle(Javalin app) 
//		app.exception(NullPointerException.class, (e, ctx) -> 
//			// handle nullpointers here
//			log.error("", e);
//			ctx.status(HttpStatus.INTERNAL_SERVER_ERROR_500).result("NullPointerException");
//		);

		app.exception(Exception.class, (ex, ctx) -> 
			RetResult re = null;
			if (ex instanceof BaseException) // 自定义异常
				BaseException e = (BaseException) ex;
				re = new RetResult(e.getCode(), e.getMessage());
			 else 
				re = new RetResult(ErrorType.Fail.getCode(), ex.getMessage());
				log.error("", ex);
			
			ctx.status(HttpStatus.INTERNAL_SERVER_ERROR_500).json(re);
		);
	

package com.soft.controller;

import java.util.ArrayList;
import java.util.Date;
import java.util.List;

import org.eclipse.jetty.http.HttpStatus;

import io.javalin.http.Context;
import io.javalin.plugin.openapi.annotations.HttpMethod;
import io.javalin.plugin.openapi.annotations.OpenApi;
import io.javalin.plugin.openapi.annotations.OpenApiContent;
import io.javalin.plugin.openapi.annotations.OpenApiRequestBody;
import io.javalin.plugin.openapi.annotations.OpenApiResponse;
import io.javalin.plugin.openapi.annotations.OpenApiSecurity;

public class UserController 

	@OpenApi(path = Router.verifyPwd, method = HttpMethod.POST, summary = "3.21 密码验证", requestBody = @OpenApiRequestBody(content = @OpenApiContent(from = VerifyPwdReq.class)), security = 
			@OpenApiSecurity(name = HeaderParam.X_APP_ID), @OpenApiSecurity(name = HeaderParam.X_APP_KEY) )
	/**
	 * 3.21 密码验证
	 *
	 * @param req
	 * @return
	 */
	public static void verifyPwd(Context ctx) 
		VerifyPwdReq req = ctx.bodyValidator(VerifyPwdReq.class)
				.check(o -> StrUtil.isNotBlank(o.getLoginname()), Param.ACCOUNT_NO_NULL)
				.check(o -> StrUtil.isNotBlank(o.getPasswd()), Param.PASSWD_NO_NULL).get();
		//省略代码
		ctx.status(HttpStatus.BAD_REQUEST_400).json(re);
	

1.访问swagger页面

 

2.输入X-APP-ID, X-APP-KEY的值,并点击Authorize按钮

3.进行各接口方法测试

点击各接口测试发送按钮,则会自动在header中带上X-APP-ID, X-APP-KEY的值