SpringBoot项目多个启动类模块之间相互调用

1. 项目整体结构

1.2 先创建 spring-server 模块，在 spring-client 模块引用 spring-server 模块的依赖

2. 搭建 spring-server 模块

2.1 创建一个 springboot 工程模块

2.2 修改 pom 文件

<dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
    </dependencies>

2.3 修改 application.properties 文件

server.port=9092

2.4 创建 ServerController

package com.server.controller;

import com.server.service.ServerService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("/server")
public class ServerController {

    @Autowired
    private ServerService serverService;

    @GetMapping("/selectServerName")
    public String selectServerName(String name) {
        String result = serverService.selectName(name);
        return result;
    }

}

2.5 创建 ServerService 接口和实现类 ServerServiceImpl

package com.server.service;

public interface ServerService {

    String selectName(String name);

}

package com.server.service.impl;

import com.server.service.ServerService;
import org.springframework.stereotype.Service;

@Service
public class ServerServiceImpl implements ServerService {

    @Override
    public String selectName(String name) {
        return name;
    }

}

2.6 spring-server 模块结构

3. 搭建 spring-client 模块

3.1 创建一个 springboot 工程模块

3.2 修改 pom 文件，添加 spring-server 模块的依赖

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter</artifactId>
    </dependency>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
    </dependency>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>

    <dependency>
        <groupId>com.server</groupId>
        <artifactId>spring-server</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </dependency>
</dependencies>

3.3 修改 application.properties 文件

server.port=9091

3.4 创建 ClientController

package com.client.controller;

import com.client.service.ClientService;
import com.server.service.ServerService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("/client")
public class ClientController {

    @Autowired
    private ClientService clientService;

    @Autowired
    private ServerService serverService;

    @GetMapping("/selectClientName")
    public String selectClientName(String name) {
        String result = clientService.selectName(name);
        return result;
    }

    @GetMapping("/selectServerName")
    public String selectServerName(String name) {
        String result = serverService.selectName(name);
        return result;
    }

}

3.5 创建 ClientService 接口和实现类 ClientServiceImpl

package com.client.service;

public interface ClientService {

    String selectName(String name);

}

package com.client.service.impl;

import com.client.service.ClientService;
import org.springframework.stereotype.Service;

@Service
public class ClientServiceImpl implements ClientService {

    @Override
    public String selectName(String name) {
        return name;
    }

}

3.6 注入 ServerService 之后发现注入失败了，原因是 spring-client 和 spring-server 下面的包结构不同

 

3.7 修改 spring-client 启动类，加入扫描包的注解

@ComponentScan(basePackages = {"com.client", "com.server"})

package com.client;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ComponentScan;

@SpringBootApplication
@ComponentScan(basePackages = {"com.client", "com.server"})
public class SpringClientApplication {

    public static void main(String[] args) {
        SpringApplication.run(SpringClientApplication.class, args);
    }

}

3.8 spring-client 模块结构

4. 测试接口功能

4.1 测试 spring-client 模块接口 /client/selectClientName

http://localhost:9091/client/selectClientName?name=呵呵

4.2 测试 spring-client 模块接口 /client/selectServerName

http://localhost:9091/client/selectServerName?name=嘻嘻

4.3 测试 spring-server 模块接口 /server/selectServerName

http://localhost:9092/server/selectServerName?name=哈哈

4.4 完整项目地址：springboot-client-server