最近公司有個新的需求，寫了一個接口，想要把服務(wù)暴露出去，但是這個服務(wù)所在的進程是非web項目，（可以理解成schedule/batch等進程項目），所以沒有tomcat等容器，而且只有這一個服務(wù)，無論是加dubbo服務(wù)還是加tomcat等容器都顯得復(fù)雜了。那么應(yīng)該如何將服務(wù)暴露出去？

經(jīng)過網(wǎng)上搜索后，最終解決問題，記錄在此。

為了快速搭建，使用springboot來搭建項目：

項目結(jié)構(gòu)如圖：

首先需要創(chuàng)建一個接口，服務(wù)的提供者和服務(wù)的調(diào)用方都依賴這個模塊。

package com.xiazhi.spring.service.api;import com.sun.istack.internal.NotNull;import com.sun.istack.internal.Nullable;/** * @author 趙帥 * @date 2020/6/8 */public interface IUserService { /** * 獲取姓名 * @return 姓名 */ String getName(); /** * 根據(jù)姓名獲取年齡 * @param name 姓名 * @return 年齡 */ @NotNull Integer getAge(@Nullable String name);}

然后在service模塊中，實現(xiàn)接口作為服務(wù)的提供方，需要依賴的jar包有：

<dependencies> <dependency> <groupId>com.xiazhi</groupId> <artifactId>spring-service-api</artifactId> <version>${project.version}</version> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> <exclusions><exclusion> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-tomcat</artifactId></exclusion> </exclusions> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>servlet-api</artifactId> <version>2.5</version> </dependency> </dependencies>

配置文件需要加上：

spring.main.web-application-type=none

實現(xiàn)接口：

package com.xiazhi.spring.service.impl;import com.sun.istack.internal.NotNull;import com.sun.istack.internal.Nullable;import com.xiazhi.spring.service.api.IUserService;import org.springframework.stereotype.Service;/** * @author 趙帥 * @date 2020/6/8 */@Servicepublic class UserServiceImpl implements IUserService { @Override public String getName() { return '張一'; } @Override @NotNull public Integer getAge(@Nullable String name) { if (''.equals(name)) { return 10; } return 18; }}

暴露服務(wù)：

package com.xiazhi.spring.service.config;import com.sun.net.httpserver.HttpHandler;import com.xiazhi.spring.service.api.IUserService;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;import org.springframework.core.task.TaskExecutor;import org.springframework.remoting.httpinvoker.SimpleHttpInvokerServiceExporter;import org.springframework.remoting.support.SimpleHttpServerFactoryBean;import java.util.HashMap;import java.util.Map;/** * @author 趙帥 * @date 2020/6/8 */@Configurationpublic class HttpInvokerConfiguration { private final IUserService userService; private final TaskExecutor taskExecutor; public HttpInvokerConfiguration(IUserService userService, TaskExecutor taskExecutor) { this.userService = userService; this.taskExecutor = taskExecutor; } /** * 將IUserService服務(wù)暴露出去 */ @Bean public SimpleHttpInvokerServiceExporter serviceExporter() { SimpleHttpInvokerServiceExporter exporter = new SimpleHttpInvokerServiceExporter(); exporter.setService(userService); exporter.setServiceInterface(IUserService.class); return exporter; } /** * 為暴露的服務(wù)啟用http服務(wù) * @return httpServer工廠類 */ @Bean public SimpleHttpServerFactoryBean serverFactoryBean() { SimpleHttpServerFactoryBean factoryBean = new SimpleHttpServerFactoryBean(); Map<String, HttpHandler> map = new HashMap<>(2); factoryBean.setContexts(map); factoryBean.setPort(9999); factoryBean.setExecutor(taskExecutor); return factoryBean; }}

啟動服務(wù)。

然后是服務(wù)的調(diào)用方，依賴有：

<dependencies> <dependency> <groupId>com.xiazhi</groupId> <artifactId>spring-service-api</artifactId> <version>${project.version}</version> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> </dependencies>

配置文件：

package com.xiazhi.spring.config;import com.xiazhi.spring.service.api.IUserService;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;import org.springframework.remoting.httpinvoker.HttpInvokerProxyFactoryBean;/** * @author 趙帥 * @date 2020/6/8 */@Configurationpublic class HttpServiceConfiguration { /** * 使用http代理工廠調(diào)用服務(wù) * @return http代理工廠創(chuàng)建代理對象 */ @Bean public HttpInvokerProxyFactoryBean httpInvokerProxyFactoryBean() { HttpInvokerProxyFactoryBean factoryBean = new HttpInvokerProxyFactoryBean(); factoryBean.setServiceUrl('http://localhost:9999/userService'); factoryBean.setServiceInterface(IUserService.class); return factoryBean; }}

使用接口，調(diào)用方法：

package com.xiazhi.spring.controller;import com.xiazhi.spring.service.api.IUserService;import org.springframework.web.bind.annotation.GetMapping;import org.springframework.web.bind.annotation.RestController;/** * @author 趙帥 * @date 2020/6/8 */@RestControllerpublic class UserController { private final IUserService userService; public UserController(IUserService userService) { this.userService = userService; } @GetMapping('/test') public String test() { String name = userService.getName(); Integer age = userService.getAge(null); System.out.println(String.format('姓名：[%s],age:[%s]', name, age)); return name; }}

運行，調(diào)用test路徑測試調(diào)用結(jié)果。

項目完整結(jié)構(gòu)：

以上就是本文的全部內(nèi)容，希望對大家的學習有所幫助，也希望大家多多支持好吧啦網(wǎng)。