pomelo 环境
操作系统和node pomelo版本
ubuntu16.04 64bit
node 5.8.0 ($node -v)
npm 3.7.3 ($npm -v)
pomelo 1.2.3 ($pemelo –version)
npm安装的模块
注意模块的版本,比如
generic-pool 我的安装命令是
$npm install generic-pool@"<3.0" -g
因为generic-pool 3.0 在之前的基础上有很大的改变
pomelo建立项目
pomelo初始项目 需要选择websocket, socke.io(按照提示选择即可)
package.json
每个项目的根目录下面,一般都有一个package.json文件,定义了这个项目所需要的各种模块,以及项目的配置信息(比如名称、版本、许可证等元数据)。npm install命令根据这个配置文件,自动下载所需的模块,也就是配置项目所需的运行和开发环境。
例如game-server文件夹下的 package.json
{
"name":"pemelopro1",
"version":"0.0.1",
"private":false,
"dependencies":{
"pomelo":"1.2.3"
}
}
$sh npm-install.sh
pomelo 新建项目后,需要intall模块 即使用如下命令
sh npm-install.sh
可以查看npm-install.sh的内容,如下
cd ./game-server && npm install -d
echo '============ game-server npm installed ============'
cd ..
cd ./web-server && npm install -d
echo '============ web-server npm installed ============'
mysql操作,注意自己的模块版本
game-server/app 目录下新建两个文件
dao/MySQL/dao-pool.js
var _poolModule = require('generic-pool');
/*
* Create mysql connection pool.
*/
var createMysqlPool = function(app) {
var mysqlConfig = app.get('mysql');
var pool = _poolModule.Pool({
name: 'mysql',
create: function(callback) {
var mysql = require('mysql');
var client = mysql.createConnection({
host: mysqlConfig.host,
user: mysqlConfig.user,
password: mysqlConfig.password,
database: mysqlConfig.database
});
callback(null, client);
},
destroy: function(client) {
client.end();
},
max: 10,
idleTimeoutMillis : 30000,
log : false
});
return pool;
};
exports.createMysqlPool = createMysqlPool;
dao/mysql/mysql.js
var sqlclient = module.exports;
var _pool;
var NND = {};
/*
* Init sql connection pool
* @param {Object} app The app for the server.
*/
NND.init = function(app){
_pool = (require('./dao-pool')).createMysqlPool(app);
};
/**
* Excute sql statement
* @param {String} sql Statement The sql need to excute.
* @param {Object} args The args for the sql.
* @param {fuction} cb Callback function.
*
*/
NND.query = function(sql, args, cb){
_pool.acquire(function(err, client) {
if (!!err) {
console.error('[sqlqueryErr] '+err.stack);
return;
}
client.query(sql, args, function(err, res) {
_pool.release(client);
cb(err, res);
});
});
};
/**
* Close connection pool.
*/
NND.shutdown = function(){
_pool.destroyAllNow();
};
/**
* init database
*/
sqlclient.init = function(app) {
if (!!_pool){
return sqlclient;
} else {
NND.init(app);
sqlclient.insert = NND.query;
sqlclient.update = NND.query;
sqlclient.delete = NND.query;
sqlclient.query = NND.query;
return sqlclient;
}
};
/**
* shutdown database
*/
sqlclient.shutdown = function(app) {
NND.shutdown(app);
};
config 下写mysql.json,数据库的连接,例如
{
"development": {
"host" : "127.0.0.1",
"port" : "3306",
"database" : "mydb",
"user" : "root",
"password" : "123456"
},
"production": {
"host" : "127.0.0.1",
"port" : "3306",
"database" : "mydb",
"user" : "root",
"password" : "123456"
}
}
修改 game-server下的app.js
添加三句话
app.loadConfig("mysql", app.getBase() + "/config/mysql.json"); // 添加配置
var dbclient = require("./app/dao/mysql/mysql.js").init(app); // 初始化dbclient
app.set("dbclient", dbclient);// dbclient 为外部数据库接口,app.get("dbclient") 来使用
完整的app.js
var pomelo = require('pomelo');
/**
* Init app for client.
*/
var app = pomelo.createApp();
app.set('name', 'pemelopro1');
app.loadConfig("mysql", app.getBase() + "/config/mysql.json"); // 添加配置
// app configuration
app.configure('production|development', 'connector', function(){
app.set('connectorConfig',
{
connector : pomelo.connectors.sioconnector,
//websocket, htmlfile, xhr-polling, jsonp-polling, flashsocket
transports : ['websocket'],
heartbeats : true,
closeTimeout : 60,
heartbeatTimeout : 60,
heartbeatInterval : 25
});
var dbclient = require("./app/dao/mysql/mysql.js").init(app); // 初始化dbclient
app.set("dbclient", dbclient);// dbclient 为外部数据库接口,app.get("dbclient") 来使用
});
// start app
app.start();
process.on('uncaughtException', function (err) {
console.error(' Caught exception: ' + err.stack);
});
客户端代码修改
很简单,就是请求时,传给服务端的数据修改了,变成了如下的数据
{username:'zhang',password:'123'}
<script type="text/javascript">
var pomelo = window.pomelo;
var host = "127.0.0.1";
var port = "3010";
function show() {
pomelo.init({
host: host,
port: port,
log: true
}, function() {
pomelo.request("connector.entryHandler.entry",{username:'zhang',password:'123'}, function(data) {
alert(data.msg);
});
});
}
</script>
服务端代码修改
app/servers/connector/handler/entryHandler.js
直接修改Handler.prototype.entry 方法
Handler.prototype.entry = function(msg, session, next) {
//next(null, {code: 200, msg: 'game server is ok.'});
var username = msg.username;
var password = msg.password
var clientMsg ="";
clientMsg += 'username:';
clientMsg += username;
clientMsg += 'password:';
clientMsg += password;
console.log(clientMsg);
var sql = "insert into `User`(`username`,`password`) values(?, ?);";
var args = [username, password];
var dbclient = this.app.get('dbclient');//获取全局mysql client
dbclient.query(sql, args, function (err, res) {//执行sql语句 函数insert和query等
console.log("......................");
console.log(err + "" + JSON.stringify(res));
console.log("......................");
if (err) {
next(null, {code: 200 , msg: 'db error'});
}
else {
next(null, {code: 200 , msg: clientMsg });
}
});
//next(null, result);
//next(null, {code: 200, msg: clientMsg});
};
运行截图
搜出来的(基本都这样,否则需要github上看文档),写的不错,不过没有交代pomelo的环境,并且模块版本不一样,也是不行的,注意我上面方法的区别之处。
建议安装node-dev模块
$ npm install node-dev -g
z在运行web-server时
原来的 node app.js 换成
$node-dev --debug app.js
当有js文件修改后,自动去重启nodejs进程, 这样就不用每次ctrl+c终止,然后再重启了
而且不仅支持js文件, .json .node .coffee 文件格式都支持。