关于后端:SpringbootMysql实现的在线聊天及聊天室系统

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项目名称

Springboot+Mysql 实现的在线聊天及聊天室零碎

演示视频

[
Springboot+Mysql 实现的在线聊天及聊天室零碎源码_哔哩哔哩_bilibili](https://www.bilibili.com/video/BV1wp4y137oM/)

零碎介绍

3.1 性能需要剖析

在线零碎是依据网络交友的理论状况依照网络化的需要开发的，它的指标十分明确，即通过建设在线聊天平台，将原来线下聊天的形式变成线上模式，使敌人之间聊天更加便捷、平安、标准和有针对性。

零碎性能需要整体上分为用户应用性能和系统管理性能，其中用户应用性能包含增加好友、用户登录、用户注册、发送音讯、查看历史聊天记录、用户创立群组、用户查看个人信息等性能；系统管理性能包含管理员聊天和管理员管理系统设置等性能。

依据以上性能需要剖析，通过用例图来形容零碎的次要性能。构建用例模型的第一步是确定模型中的使用者有哪些，确定使用者的准则有：谁是零碎的维护者、谁是零碎的参与者等。维护者处于零碎外部，对系统有相对的控制权；而参与者个别都位于零碎的内部，处于零碎的管制之外。

当初确定本零碎用例模型有三种，别离是游客、注册用户和系统管理员。上面别离对这三个角色的性能进行形容：

 游客

游客是未注册的用户，他们只能注册成为本站用户。游客次要性能如下（图 3 - 1 为游客用例图）：

 注册成为网站用户。

图 3 - 1 游客用例图 

 注册用户

注册用户是通过网站非法认证的用户，登录网站后能够增加好友、向好友发送新音讯、查看好友发来的音讯、退出群组、创立群组和查看集体核心。注册用户次要性能如下（图 3 - 2 为注册用户用例图）：

 撤销黑名单；退出黑名单；删除好友；增加好友；查看历史聊天记录；发送音讯；创立群组；遣散群组;
邀请好友退出群组；批改个人信息；退出群组；登录；音讯免打搅。

图 3 -2 注册用户用例图 

 系统管理员

系统管理员次要负责零碎的后盾管理工作，次要性能如下（图 3 - 3 为系统管理员用例图）：

 零碎设置；聊天治理；

图 3 -3 系统管理员用例图

       在确定了零碎用户和用户性能后就能够构建在线聊天零碎的用例图了，整个零碎的用例图如图 3 - 4 零碎总体用例图所示：

零碎截图

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环境须要

1. 运行环境：最好是 java jdk 1.8，咱们在这个平台上运行的。其余版本实践上也能够。
2.IDE 环境：IDEA，Eclipse,Myeclipse 都能够。举荐 IDEA;
3.tomcat 环境：Tomcat 7.x,8.x,9.x 版本均可
4. 硬件环境：windows 7/8/10 1G 内存以上；或者 Mac OS；
5. 数据库：MySql 5.7 版本；
6. 是否 Maven 我的项目：否；

技术栈

  1. 后端：Spring+SpringMVC+Mybatis
  2. 前端：JSP+CSS+JavaScript+jQuery

应用阐明

  1. 应用 Navicat 或者其它工具，在 mysql 中创立对应名称的数据库，并导入我的项目的 sql 文件；
  2. 应用 IDEA/Eclipse/MyEclipse 导入我的项目，Eclipse/MyEclipse 导入时，若为 maven 我的项目请抉择 maven;
    若为 maven 我的项目，导入胜利后请执行 maven clean;maven install 命令，而后运行；
  3. 将我的项目中 springmvc-servlet.xml 配置文件中的数据库配置改为本人的配置;
  4. 运行我的项目，在浏览器中输出 http://localhost:8080/ 登录

POM 依赖:

<dependencies>

 
<dependency>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
  <groupId>mysql</groupId>
  <artifactId>mysql-connector-java</artifactId>
  <scope>runtime</scope>
</dependency>
 
<dependency>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-freemarker</artifactId>
</dependency>
<dependency>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-web</artifactId>
</dependency>

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

<dependency>
    <groupId>org.apache.commons</groupId>
    <artifactId>commons-lang3</artifactId>
</dependency>
<dependency>
    <groupId>commons-codec</groupId>
    <artifactId>commons-codec</artifactId>
</dependency>

<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>fastjson</artifactId>
    <version>1.2.31</version>
</dependency>

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-devtools</artifactId>
    <!-- optional=true, 依赖不会传递, 该我的项目依赖 devtools; 
        之后依赖 boot 我的项目的我的项目如果想要应用 devtools, 须要从新引入 -->
    <optional>true</optional>
</dependency>

<dependency>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-websocket</artifactId>
  <version>2.1.3.RELEASE</version><!--$NO-MVN-MAN-VER$-->
</dependency>

 <!-- webSocket 开始 -->
<dependency>
    <groupId>javax.websocket</groupId>
    <artifactId>javax.websocket-api</artifactId>
    <scope>provided</scope>
</dependency>
 
<dependency>
    <groupId>javax</groupId>
    <artifactId>javaee-api</artifactId>
    <version>8.0</version>
    <scope>provided</scope>
</dependency>
<!-- webSocket 完结 -->

</dependencies>

管理员管理控制层:

package com.sxl.controller.admin;

import java.util.List;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;

import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

import com.sxl.controller.MyController;

@Controller(“adminController”)
@RequestMapping(value = “/admin”)
public class AdminController extends MyController {



@RequestMapping(value = "/index")
public String frame(Model model, HttpServletRequest request)throws Exception {return "/admin/index";}

@RequestMapping(value = "/main")
public String main(Model model, HttpServletRequest request)throws Exception {return "/admin/main";}

@RequestMapping(value = "/tj1")
public String tj1(Model model, HttpServletRequest request)throws Exception {String sql="select DATE_FORMAT(insertDate,'%Y-%m-%d') dates,sum(allPrice) price from t_order order by DATE_FORMAT(insertDate,'%Y-%m-%d')  desc";
    List<Map> list = db.queryForList(sql);
    model.addAttribute("list", list);
    System.out.println(list);
    return "/admin/tj/tj1";
}


@RequestMapping(value = "/password")
public String password(Model model, HttpServletRequest request)throws Exception {return "/admin/password";}


@RequestMapping(value = "/changePassword")
public ResponseEntity<String> loginSave(Model model,HttpServletRequest request,String oldPassword,String newPassword) throws Exception {Map admin = getAdmin(request);
    if(oldPassword.equals(admin.get("password").toString())){
        String sql="update t_admin set password=? where id=?";
        db.update(sql, new Object[]{newPassword,admin.get("id")});
        return renderData(true,"1",null);
    }else{return renderData(false,"1",null);
    }
}

}

批改明码业务逻辑:

package com.sxl.controller.admin;

import java.util.Map;

import javax.servlet.http.HttpServletRequest;

import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

import com.sxl.controller.MyController;

@Controller(“userController”)
@RequestMapping(value = “/user”)
public class UserController extends MyController {



@RequestMapping(value = "/index")
public String frame(Model model, HttpServletRequest request)throws Exception {return "/user/index";}

@RequestMapping(value = "/main")
public String main(Model model, HttpServletRequest request)throws Exception {return "/user/main";}


@RequestMapping(value = "/password")
public String password(Model model, HttpServletRequest request)throws Exception {return "/user/password";}


@RequestMapping(value = "/changePassword")
public ResponseEntity<String> loginSave(Model model,HttpServletRequest request,String oldPassword,String newPassword) throws Exception {Map user = getUser(request);
    if(oldPassword.equals(user.get("password").toString())){
        String sql="update t_user set password=? where id=?";
        db.update(sql, new Object[]{newPassword,user.get("id")});
        return renderData(true,"1",null);
    }else{return renderData(false,"1",null);
    }
}
@RequestMapping(value = "/mine")
public String mine(Model model, HttpServletRequest request)throws Exception {

Map user =getUser(request);Map map = db.queryForMap(“select * from t_user where id=?”,new Object[]{user.get(“id”)});model.addAttribute(“map”, map); return “/user/mine”;

}



@RequestMapping(value = "/mineSave")
public ResponseEntity<String> mineSave(Model model,HttpServletRequest request,Long id
    ,String username,String password,String name,String gh,String mobile) throws Exception{
    int result = 0;
        String sql="update t_user set name=?,gh=?,mobile=? where id=?";
        result = db.update(sql, new Object[]{name,gh,mobile,id});
    if(result==1){return renderData(true,"操作胜利",null);
    }else{return renderData(false,"操作失败",null);
    }
}
}

通用治理模块:

package com.sxl.controller;

import java.nio.charset.Charset;
import java.util.Locale;
import java.util.ResourceBundle;

import javax.servlet.http.HttpServletRequest;

import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;

import com.sxl.util.JacksonJsonUtil;
import com.sxl.util.StringUtil;
import com.sxl.util.SystemProperties;

public class BaseController {

public static final Long EXPIRES_IN = 1000 * 3600 * 24 * 1L;// 1 天

@Autowired
private SystemProperties systemProperties;

/**
 * 取得配置文件内容
 */
public String getConfig(String key) {return systemProperties.getProperties(key);
}

/**
 * 返回服务器地址 like http://192.168.1.1:8441/UUBean/
 */
public String getHostUrl(HttpServletRequest request) {String hostName = request.getServerName();
    Integer hostPort = request.getServerPort();
    String path = request.getContextPath();

    if (hostPort == 80) {return "http://" + hostName + path + "/";} else {return "http://" + hostName + ":" + hostPort + path + "/";}
}

/***
 * 获取以后的 website 门路 String
 */
public static String getWebSite(HttpServletRequest request) {String returnUrl = request.getScheme() + "://"
            + request.getServerName();

    if (request.getServerPort() != 80) {returnUrl += ":" + request.getServerPort();
    }

    returnUrl += request.getContextPath();

    return returnUrl;
}



/**
 * 初始化 HTTP 头.
 * 
 * @return HttpHeaders
 */
public HttpHeaders initHttpHeaders() {HttpHeaders headers = new HttpHeaders();
    MediaType mediaType = new MediaType("text", "html",
            Charset.forName("utf-8"));
    headers.setContentType(mediaType);
    return headers;
}

/**
 * 返回 信息数据
 * 
 * @param status
 * @param msg
 * @return
 */
public ResponseEntity<String> renderMsg(Boolean status, String msg) {if (StringUtils.isEmpty(msg)) {msg = "";}
    String str = "{\"status\":\"" + status + "\",\"msg\":\""+ msg +"\"}";
    ResponseEntity<String> responseEntity = new ResponseEntity<String>(str,
            initHttpHeaders(), HttpStatus.OK);
    return responseEntity;
}

/**
 * 返回 obj 数据
 * 
 * @param status
 * @param msg
 * @param obj
 * @return
 */
public ResponseEntity<String> renderData(Boolean status, String msg,
        Object obj) {if (StringUtils.isEmpty(msg)) {msg = "";}
    StringBuffer sb = new StringBuffer();
    sb.append("{");
    sb.append("\"status\":\"" + status + "\",\"msg\":\""+ msg +"\",");
    sb.append("\"data\":" + JacksonJsonUtil.toJson(obj) + "");
    sb.append("}");

    ResponseEntity<String> responseEntity = new ResponseEntity<String>(sb.toString(), initHttpHeaders(), HttpStatus.OK);
    return responseEntity;
}


/***
 * 获取 IP（如果是多级代理，则失去的是一串 IP 值）*/
public static String getIpAddr(HttpServletRequest request) {String ip = request.getHeader("x-forwarded-for");
    if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {ip = request.getHeader("Proxy-Client-IP");
    }

    if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {ip = request.getHeader("WL-Proxy-Client-IP");
    }

    if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {ip = request.getRemoteAddr();
    }

    if (ip != null && ip.length() > 0) {String[] ips = ip.split(",");
        for (int i = 0; i < ips.length; i++) {if (!"unknown".equalsIgnoreCase(ips[i])) {ip = ips[i];
                break;
            }
        }
    }

    return ip;
}

/**
 * 国际化取得语言内容
 * 
 * @param key
 *            语言 key
 * @param args
 * @param argsSplit
 * @param defaultMessage
 * @param locale
 * @return
 */
public static String getLanguage(String key, String args, String argsSplit,
        String defaultMessage, String locale) {
    String language = "zh";
    String contry = "cn";
    String returnValue = defaultMessage;

    if (!StringUtil.isEmpty(locale)) {
        try {String[] localeArray = locale.split("_");
            language = localeArray[0];
            contry = localeArray[1];
        } catch (Exception e) {}}

    try {
        ResourceBundle resource = ResourceBundle.getBundle("lang.resource",
                new Locale(language, contry));
        returnValue = resource.getString(key);
        if (!StringUtil.isEmpty(args)) {String[] argsArray = args.split(argsSplit);
            for (int i = 0; i < argsArray.length; i++) {returnValue = returnValue.replace("{" + i + "}",
                        argsArray[i]);
            }
        }
    } catch (Exception e) { }

    return returnValue;
}

}

​

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后端
发表至： 后端
2023-08-15
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