Java+Unity实现简单通信

原本准备实现

后端：java+spring+netty+mysql

但由于很久没有使用sql，便只使用了java+spring+netty的解决方案。

内容实现为简单的查询和登录功能。

后端实现

使用了spring webflux框架

<!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-web -->
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-webflux</artifactId>
</dependency>

Bean：userbean储存信息

public class UserBean {

	private String name;
	private String passWord;
	
	
	public UserBean(String name, String passWord) {
		super();
		this.name = name;
		this.passWord = passWord;
	}
	
	public String getName() {
		return name;
	}
	
	public void setName(String name) {
		this.name = name;
	}
	
	public String getPassWord() {
		return passWord;
	}
	
	public void setPassWord(String passWord) {
		this.passWord = passWord;
	}

	@Override
	public String toString() {
		return "UserBean [name=" + name + ", passWord=" + passWord + "]";
	}
	
	
}

这里没有使用server层和dao层，只写了control层相应请求。

@RestController
public class GameService {

	@CrossOrigin
	@GetMapping("/hello")
	public String hello() {
		return "hello";
	}
    //登录
	@PostMapping("/login")
	public boolean login(UserBean userBean) {
		System.out.println(userBean);
        //登录信息必须为账号123，密码123456，才认证成功
		if(userBean.getName().equals("123")  && userBean.getPassWord().equals("123456")) {
			return true;
		}else {
			return false;
		}
	}
    //注册
	@PutMapping("/register")
	public boolean register(@RequestBody UserBean userBean) {
		System.out.println(userBean);
		return true;
	}
    //获取用户列表
	@GetMapping("/user")
	@ResponseBody
	public ArrayList<UserBean> getUsers() {
		UserBean user1 = new UserBean("123465", "aaaa");
		UserBean user2 = new UserBean("zzzz", "aaaa");
		ArrayList<UserBean> list = new ArrayList<UserBean>();
		list.add(user1);
		list.add(user2);
		return list;
	}
	
}

webflux的过滤器，可以实现一些过滤功能，这里仅测试用

//@Component
@Configuration
public class TestServletFilter implements WebFilter {

	@Override
	public Mono<Void> filter(ServerWebExchange exchange, WebFilterChain chain) {
		// TODO Auto-generated method stub
		System.out.println("新的请求");
		exchange.getSession().doOnNext(t -> {
			System.out.println(t.getId());
		});

		System.out.println(exchange.getRequest().getPath());
		System.out.println(exchange.getResponse().getStatusCode());
		System.out.println(exchange.getSession().subscribe(t -> {
			System.out.println(t.getId());
			t.save();
		}));
		return chain.filter(exchange);
	}

}

unity

搭建ui

登录

注册

列表

制作相应的ui控制脚本，这里只展示UnityWebRequest的使用，由web管理组件控制。

public class WebSocketManager : MonoBehaviour
{
    //UI管理器引用
    public UIManager uIManager;
    //web管理器唯一引用，以便其他对象引用
    public static WebSocketManager socketManager;
    //host
    public string host = "http://127.0.0.1";
    void Start()
    {
        //单例
        if(socketManager!= null)
        {
            Destroy(gameObject);
        }
        else
        {
            socketManager = this;
        }
        
    }
    //登录
    public void login(string name, string pw)
    {
        StartCoroutine(_login(name, pw));
    }
    //登录的协程
    public IEnumerator _login(string name,string pw)
    {
        
        string url = host + "/login";
        //创建表单数据，发送请求
        List<IMultipartFormSection> fromData = new List<IMultipartFormSection>();
        fromData.Add(new MultipartFormDataSection("name", name));
        fromData.Add(new MultipartFormDataSection("passWord", pw));
        UnityWebRequest request =UnityWebRequest.Post(url,fromData);
        yield return request.SendWebRequest();
        if(request.result != UnityWebRequest.Result.Success)
        {
            Debug.LogWarning("请求失败:"+request.error);
        }
        else
        {
            Debug.Log(request.downloadHandler.text);
            bool isLogin = bool.Parse(request.downloadHandler.text);
            //请求为ture后跳转至主页面
            if (isLogin)
            {
                uIManager.OpenMain();
            }
        }

    }
    //获得多个用户
   public void getuser()
    {
        StartCoroutine(_getUser());
    }
    //获得多个用户的协程
    IEnumerator _getUser()
    {
        string url = host+"/user";
        UnityWebRequest request = UnityWebRequest.Get(url);
        yield return request.SendWebRequest();
        if (request.result != UnityWebRequest.Result.Success)
        {
            Debug.LogWarning("请求失败:" + request.error);
        }
        else
        {
            Debug.Log(request.downloadHandler.text);
            //使用jsonNet将list的json数据转换为list对象
            List<UserBean> users = JsonConvert.DeserializeObject<List<UserBean>>(request.downloadHandler.text);
            //unity自带的json转换器不能转换list对象
            //List<UserBean> users = JsonUtility.FromJson<List<UserBean>>(request.downloadHandler.text);
            //主页面数据更新
            uIManager.main.updataUserData(users);
        }
    }
    //注册
    public void regist(string name, string pw)
    {
        StartCoroutine(_register(name, pw));
    }
    //注册的协程
    IEnumerator _register(string name,string pw)
    {
        string url =host+ "/register";
        UserBean user = new UserBean();
        user.name = name;
        user.passWord = pw;
        string data = JsonUtility.ToJson(user);
        Debug.Log("发送信息：" + data);
        //发送put请求，并将改写contentType
        UnityWebRequest request = UnityWebRequest.Put(url, data);
        request.uploadHandler.contentType = "application/json";
        yield return request.SendWebRequest();
        if (request.result != UnityWebRequest.Result.Success)
        {
            Debug.LogWarning("请求失败:" + request.error);
        }
        else
        {
            Debug.Log(request.downloadHandler.text);
            bool isRigster = bool.Parse(request.downloadHandler.text);
            //注册成功，跳转至登录页面
            if (isRigster)
            {
                uIManager.OpenLogin();
            }
        }
    }
}

演示效果：

整体上，没有什么难度，只是在netty中没有session，花了很大的时间才发现为什么sessionID一直在变，对于netty需要自己去实现sessionID的细节来保持会话。