献给移动端的服务器搭建

移动端进阶之选：移动端开发者也能轻松搭建的服务器

前言：

笔者最近收到了挺多客户端的留言，客户端在等待后台接口的时候遥遥无期，其实客户端只需要几步就能简单搭建一个后台，用于调试接口的，本期就简单搭建一个后台，用于客户端调试接口。相关代码已放于 github

1.基础框架搭建：

使用开发工具IDEA，新建一个spring-boot项目：

IDEA下载地址下载Ultimate版本
JDK下载地址 下载对应的JDK版本即可

image image image image image

点击finish后，一个sping-boot的基础项目已经创建好了。

image

2.项目启动：

TestApplication直接run就能启动项目了的

image

application.properties这个是项目的一些配置，举例一下默认是8080端口，我们如果想改下端口的话，就可以在配置增加

server.port: 8089

这样子启动的时候端口就更改了的

image

项目的请求地址为：http://本机IP:8089

3.一个简单的接口开发：

如图创建对应的目录以及创建对应的实体类：

image

在项目启动类 TestApplication设置HttpMessageConverters的JSON格式输出为fastjson：

package com.example.test;

import com.alibaba.fastjson.serializer.SerializerFeature;
import com.alibaba.fastjson.support.config.FastJsonConfig;
import com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.http.HttpMessageConverters;
import org.springframework.context.annotation.Bean;
import org.springframework.http.MediaType;

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

@SpringBootApplication
public class TestApplication {

    /**
     * JSON格式输出使用fastjson
     * @return
     */
    @Bean
    public HttpMessageConverters fastJsonHttpMessageConverters() {
        FastJsonHttpMessageConverter fastConverter = new FastJsonHttpMessageConverter();
        FastJsonConfig fastJsonConfig = new FastJsonConfig();
        fastJsonConfig.setSerializerFeatures(SerializerFeature.PrettyFormat,SerializerFeature.DisableCircularReferenceDetect,SerializerFeature.WriteNullStringAsEmpty);
        //时间格式化
        fastJsonConfig.setDateFormat("yyyyMMddHHmmss");
        fastConverter.setFastJsonConfig(fastJsonConfig);
        //由于新版本fastjson设置了MediaType为'/',所以需要手动加入所需的MediaType
        List<MediaType> supportedMediaTypes = new ArrayList<>();
        //增加JSON的MediaType
        supportedMediaTypes.add(MediaType.APPLICATION_JSON);
        supportedMediaTypes.add(MediaType.APPLICATION_JSON_UTF8);
        //下面的都是扩展的
        supportedMediaTypes.add(MediaType.APPLICATION_ATOM_XML);
        supportedMediaTypes.add(MediaType.APPLICATION_FORM_URLENCODED);
        supportedMediaTypes.add(MediaType.APPLICATION_OCTET_STREAM);
        supportedMediaTypes.add(MediaType.APPLICATION_PDF);
        supportedMediaTypes.add(MediaType.APPLICATION_RSS_XML);
        supportedMediaTypes.add(MediaType.APPLICATION_XHTML_XML);
        supportedMediaTypes.add(MediaType.APPLICATION_XML);
        supportedMediaTypes.add(MediaType.IMAGE_GIF);
        supportedMediaTypes.add(MediaType.IMAGE_JPEG);
        supportedMediaTypes.add(MediaType.IMAGE_PNG);
        supportedMediaTypes.add(MediaType.TEXT_EVENT_STREAM);
        supportedMediaTypes.add(MediaType.TEXT_HTML);
        supportedMediaTypes.add(MediaType.TEXT_MARKDOWN);
        supportedMediaTypes.add(MediaType.TEXT_PLAIN);
        supportedMediaTypes.add(MediaType.TEXT_XML);
        fastConverter.setSupportedMediaTypes(supportedMediaTypes);
        fastConverter.setFastJsonConfig(fastJsonConfig);
        //将fastjson添加到视图消息转换器列表内
        return new HttpMessageConverters(fastConverter);
    }

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

pom.xml里面的dependencies增加如下配置：

<dependency>
   <groupId>com.alibaba</groupId>
   <artifactId>fastjson</artifactId>
   <version>1.2.47</version>
</dependency>

创建响应的基础DTO(entity目录)：

在entity文件目录单击右键 image

创建名为ResponseDTO的实体类并且实现序列化(Serializable 可以使你将一个对象的状态写入一个Byte 流里（序列化），并且可以从其它地方把该Byte 流里的数据读出来（反序列化）)

package com.example.test.entity;

import com.example.test.enums.ResponseEnum;

import java.io.Serializable;

/**
 * @author Dwyane.
 * @date 2018-11-12
 */
public class ResponseDTO<T> implements Serializable {
    private static final long serialVersionUID = -4109110629830724000L;
    /**
     * 响应code
     */
    private String responseCode;
    /**
     * 响应描述
     */
    private String responseDesc;
    /**
     * 响应的内容
     */
    private T data;

    private ResponseDTO() {
    }

    public ResponseDTO(ResponseEnum responseEnum) {
        this(responseEnum, null);

    }

    public ResponseDTO(String responseCode, String responseDesc) {
        this.responseCode = responseCode;
        this.responseDesc = responseDesc;
    }

    public ResponseDTO(T data, ResponseEnum responseEnum) {
        this(responseEnum);
        this.data = data;
    }

    public ResponseDTO(T data, String responseCode, String responseDesc) {
        this.responseCode = responseCode;
        this.responseDesc = responseDesc;
        this.data = data;
    }

    public ResponseDTO(ResponseEnum responseEnum, String extend) {
        if (responseEnum != null) {
            this.responseCode = responseEnum.getResponseCode();
            this.responseDesc = responseEnum.getResponseDesc() + (extend == null ? "" : "(" + extend + ")");
        }
    }

    public static <T> ResponseDTO<T> buildSuccess(T data) {
        return new ResponseDTO<>(data, ResponseEnum.SUCCESS);
    }

    public static <T> ResponseDTO<T> buildSuccess() {
        return new ResponseDTO<>(ResponseEnum.SUCCESS);
    }

    public static <T> ResponseDTO<T> buildFail() {
        return new ResponseDTO<>(ResponseEnum.FAIL);
    }

    public static <T> ResponseDTO<T> buildError() {
        return new ResponseDTO<>(ResponseEnum.ERROR);
    }

    public static <T> ResponseDTO<T> buildEnum(T data, ResponseEnum responseEnum) {
        return new ResponseDTO<>(data, responseEnum);
    }

    public static <T> ResponseDTO<T> buildEnum(ResponseEnum responseEnum) {
        return new ResponseDTO<>(responseEnum);
    }

    public String getResponseCode() {
        return this.responseCode;
    }

    public void setResponseCode(String responseCode) {
        this.responseCode = responseCode;
    }

    public String getResponseDesc() {
        return this.responseDesc;
    }

    public void setResponseDesc(String responseDesc) {
        this.responseDesc = responseDesc;
    }

    public T getData() {
        return this.data;
    }

    public void setData(T date) {
        this.data = date;
    }
}

创建响应的基础枚举(enums目录)：

在enums文件目录单击右键创建class时选择Enum的枚举类

image

package com.example.test.enums;

/**
 * @author Dwyane.
 * @date 2018-11-12
 */
public enum ResponseEnum {

    SUCCESS("0000","成功"),
    ERROR("9999","服务器异常"),
    FAIL("9998","失败"),

    ;
    /**
     * 返回代码
     */
    public String responseCode;
    /**
     * 返回描述
     */
    public String responseDesc;

    ResponseEnum(String responseCode, String responseDesc) {
        this.responseCode = responseCode;
        this.responseDesc = responseDesc;
    }

    /**
     * 获取  返回代码
     *
     * @return 返回代码
     */
    public String getResponseCode() {
        return this.responseCode;
    }

    /**
     * 获取  返回描述
     *
     * @return 返回描述
     */
    public String getResponseDesc() {
        return this.responseDesc;
    }

}

创建请求的实体类和响应的实体类(entity目录下的member目录)：

package com.example.test.entity.member;

import javax.validation.constraints.NotNull;

/**
 * @author Dwyane.
 * @date 2018-11-9
 */
public class LoginRequestDTO {

    @NotNull
    private String mobile;

    @NotNull
    private String pwd;

    public String getMobile() {
        return mobile;
    }

    public void setMobile(String mobile) {
        this.mobile = mobile;
    }

    public String getPwd() {
        return pwd;
    }

    public void setPwd(String pwd) {
        this.pwd = pwd;
    }
}

package com.example.test.entity.member;

/**
 * @author Dwyane.
 * @date 2018-11-9
 */
public class LoginResponseDTO {

    private String mobile;

    private String name;

    public String getMobile() {
        return mobile;
    }

    public void setMobile(String mobile) {
        this.mobile = mobile;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }
}

创建一个controller(controller目录)：

package com.example.test.controller;

import com.example.test.entity.ResponseDTO;
import com.example.test.entity.member.LoginRequestDTO;
import com.example.test.entity.member.LoginResponseDTO;
import com.example.test.enums.ResponseEnum;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.validation.Valid;

/**
 * @author Dwyane.
 * @date 2018-11-12
 */
@RestController
@RequestMapping("/member")
public class MemberController {

    @PostMapping("/login")
    public ResponseDTO<LoginResponseDTO> login(@Valid @RequestBody LoginRequestDTO requestDTO) throws Exception{
        //todo 校验账号密码

        //校验好了，返回用户信息给到客户端
        LoginResponseDTO response = new LoginResponseDTO();
        response.setMobile(requestDTO.getMobile());
        response.setName("test");
        return new ResponseDTO<>(response, ResponseEnum.SUCCESS);
    }

}

4.test接口调试：

在test目录下创建一个简单的调试类：

package com.example.test;

import com.example.test.entity.member.LoginRequestDTO;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.boot.test.web.client.TestRestTemplate;
import org.springframework.http.HttpEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpMethod;
import org.springframework.http.ResponseEntity;
import org.springframework.test.context.junit4.SpringRunner;

@RunWith(SpringRunner.class)
@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
public class TestApplicationTests {

    @Autowired
    protected TestRestTemplate restTemplate;

    /**
     * 登录单元测试
     *
     * @throws Exception
     */
    @Test
    public void login() throws Exception {
        LoginRequestDTO requestDTO = new LoginRequestDTO();
        requestDTO.setMobile("12345678910");
        requestDTO.setPwd("123");
        HttpEntity<LoginRequestDTO> formEntity = new HttpEntity<>(requestDTO, new HttpHeaders());
        ResponseEntity<String> exchange = restTemplate.exchange("/member/login",
                HttpMethod.POST, formEntity, String.class);
        System.err.println(exchange.getBody());
    }

}

直接单击右键测试类run即可：

{"responseDesc":"成功","data":{"mobile":"12345678910","name":"test"},"responseCode":"0000"}

这样一个简单的接口调用项目已经完成了。

iOS 开发者也可以用以下 swift 代码请求接口（安卓请求也简单，在此不予列出）

// 输入自己电脑连接的ip , 我的是以下ip ,其中 8089 是端口号
var urlStr = "http://192.168.1.113:8089/member/login"
var url:NSURL! = NSURL(string: urlStr)
let request:NSMutableURLRequest = NSMutableURLRequest(url: url as URL)

//设置为POST请求
request.httpMethod = "POST"
request.setValue("text/html", forHTTPHeaderField: "Content-Type")

//设置参数
var params = "{'mobile':122, 'pwd':112}"
let data = params.data(using: .utf8)
request.httpBody = data

//默认session配置
let config = URLSessionConfiguration.default
let session = URLSession(configuration: config)
//发起请求
let dataTask = session.dataTask(with: request as URLRequest) { (data, response, error) in
    // let str:String! = String(data: data!, encoding: NSUTF8StringEncoding)
    // print("str:/(str)")
    //转Json
    let jsonData:NSDictionary = try! JSONSerialization.jsonObject(with: data!, options: .mutableContainers) as! NSDictionary
    print(jsonData)
}

//请求开始
dataTask.resume()

得出如下结果：

{
data = {
mobile = 122;
name = test;
};
responseCode = 0000;
responseDesc = "\U6210\U529f";
}

至此，一个完整的、简单的后台搭建完成，客户端的朋友们，是不是觉得很简单? 如有疑问，欢迎留言，笔者第一时间回复，谢谢关注！

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