Windows Azure Mobiles Services实现客户端的登录注册

下文只是简单实现，客户端以Android端的实现为例：

用户表Account：

package com.microsoft.ecodrive.model;public class Account {@com.google.gson.annotations.SerializedName("id")public String id;@com.google.gson.annotations.SerializedName("username")public String username;@com.google.gson.annotations.SerializedName("password")public String password;@Overridepublic boolean equals(Object o) {return o instanceof Account && ((Account) o).id == id;}}

一、登录

1、服务端新建api:login，将其script替换如下：

exports.post = function(request, response) {    // Use "request.service" to access features of your mobile service, e.g.:    //   var tables = request.service.tables;    //   var push = request.service.push;    response.send(statusCodes.OK, { message : "post" });};exports.get = function(request, response) {    var myTable = request.service.tables.getTable('Account');    myTable.where({        username: request.param('username'),        password:request.param('password')    }).read({        success: checkPermissions    });    function checkPermissions(results) {        if (results.length <= 0) {            response.send(statusCodes.BAD_REQUEST, 'No such user.');        } else {            response.send(statusCodes.OK, { message : 'sucess.' });         }    }};

2、客户端登录代码如下：

private void login(final String name,final String pwd) {List<Pair<String, String>> parameters = new ArrayList<Pair<String, String>>();parameters.add(new Pair<String, String>("username", name));parameters.add(new Pair<String, String>("password", pwd));mClient.invokeApi("login","get", parameters, APIResult.class, new ApiOperationCallback<APIResult>() {        @Override        public void onCompleted(APIResult result, Exception exception, ServiceFilterResponse response) {        int code = response.getStatus().getStatusCode();Log.i(TAG, "StatusCode:"+code);if (exception == null) {showToast("Login sucess!");} else if (code==400) {showToast("Username or password is wrong, please try again.");}else{showToast(exception.getMessage());}        }    });}

注：由于是从项目中摘出来的，一些方法需要自己去初始化。

二、注册

方法一：api方式

1、服务端新建api：register，将其script替换如下：

exports.post = function(request, response) {    var myTable = request.service.tables.getTable('Account');    myTable.where({        username: request.param('username')    }).read({        success: checkPermissions    });    function checkPermissions(results) {        if (results.length <= 0) {            var toInsert ={username:request.param('username'),password:request.param('password')};            myTable.insert(toInsert, {                success: function () {                    response.send(statusCodes.OK, { message : 'Register sucess!'});                }            });        } else {            console.log('User %s Already exist.', request.param('username'));            response.send(statusCodes.BAD_REQUEST, 'Already exist.');        }    }};exports.get = function(request, response) {    response.send(statusCodes.OK, { message : 'Hello World!' });};

2、客户端代码如下：

//use apiprivate void register1(final String name,final String pwd) {List<Pair<String, String>> parameters = new ArrayList<Pair<String, String>>();parameters.add(new Pair<String, String>("username", name));parameters.add(new Pair<String, String>("password", pwd));mClient.invokeApi("register","post", parameters, APIResult.class, new ApiOperationCallback<APIResult>() {        @Override        public void onCompleted(APIResult result, Exception exception, ServiceFilterResponse response) {        int code = response.getStatus().getStatusCode();Log.i(TAG, "StatusCode:"+code);if (exception == null) {//SucessshowToast(result.message);} else if (code==400) {showToast(response.getContent());}else{showToast(exception.getMessage());}        }    });}

方法二：修改Accout表的insert的script。

1、替换Accout表的insert的script如下：

function insert(item, user, request) {    var permissionsTable = tables.getTable('Account');    permissionsTable.where({        username: item.username    }).read({        success: checkPermissions    });    function checkPermissions(results) {        if (results.length <= 0) {            request.execute();        } else {            console.log('User %s Already exist.', item.username);            request.respond(statusCodes.BAD_REQUEST, 'User already exist');        }    }}

2、客户端代码如下：

//use insertprivate void register(final String name,final String pwd) {Account account = new Account();account.username = name;account.password = pwd;mAccountTable.insert(account,new TableOperationCallback<Account>() {@Overridepublic void onCompleted(Account result, Exception exception,ServiceFilterResponse response) {int code = response.getStatus().getStatusCode();Log.i(TAG, "StatusCode:"+code);if (exception == null) {//SucessshowToast("Register sucess!");} else if (code==400) {showToast(response.getContent().replace("\"", ""));}else{showToast(exception.getMessage());}}});}

另，APIResult类如下：

package com.microsoft.ecodrive.model;import com.google.gson.annotations.SerializedName;public class APIResult {@SerializedName("count")    public int mCount;    public int getCount() {return mCount;}public String message;}