Amazon DynamoDB和AngularJS [英] Amazon DynamoDB and AngularJS

问题描述

所以，我创建了一个AWS dynamoDB表（数据库），我准备好使用AngularJS获取这些数据。我如何做这个与AngularJS？我需要与亚马逊设置另一个服务吗？或者我可以直接访问我的数据库吗？

So, I created an AWS dynamoDB table (database) and I am ready to get that data with AngularJS. How do I do this with AngularJS? Do I need to setup another service with Amazon? Or can I access my database directly?

我直接找不到任何与DynamoDB和AngularJS相关的东西。

I was unable to find anything related to DynamoDB and AngularJS directly. Any help would be greatly appreciated!

推荐答案

虽然Mars JSON演示非常出色，但这里有一个非常简单的例子， AWS SDK for JavaScript v2.1.33。切断您自己的钥匙。这是一个演示，不要硬编码密钥，可以使用AWS Cognito代替。查看几个AWS gotcha的屏幕截图。

While the Mars JSON demo is excellent, here's a really simple example to get started that uses AWS SDK for JavaScript v2.1.33. Switch out the keys for your own. This is a demo only, don't hardcode secret keys, may use AWS Cognito instead. Review the screenshots for several AWS gotcha's.

https://github.com/mayosmith / HelloDynamoDB

/*
-----------------------------------------------------------------
AWS configure
Note: this is a simple experiement for demonstration
purposes only. Replace the keys below with your own.
Do not include the secret key in an actual production
environment, because, then, it wont be secret anymore...
-----------------------------------------------------------------
*/
AWS.config.update({accessKeyId: 'AKIAJUPWRIYYQGDB6AFA', secretAccessKey: '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'});
// Configure the region
AWS.config.region = 'us-west-2';  //us-west-2 is Oregon
//create the ddb object
var ddb = new AWS.DynamoDB();
/*
-----------------------------------------------------------------
Update the Table
-----------------------------------------------------------------
*/
//update the table with this data
var params = {
  Key: {
    name: {S: 'John Mayo-Smith'},
    city: {S: 'New York'}
  },
  AttributeUpdates: {
    food: {
      Action: 'PUT',
      Value: {S: 'chocolate'}
    }
  },
  TableName: 'sampletable',
  ReturnValues: 'ALL_NEW'
};
//update the table
update();
/*
-----------------------------------------------------------------
Get Item from the Table
-----------------------------------------------------------------
*/
//attribute to read
var readparams = {

  Key: {
    name: {S: 'John Mayo-Smith'},
    city: {S: 'New York'}
  },
  AttributesToGet: ['food'],
  TableName: 'sampletable'
};
//get the item
read();
/*
-----------------------------------------------------------------
function update()
Description: Calls updateItem which is part of the AWS Javascript
SDK.
Returns: JSON object (the object is stringifyed so we can see 
what's going on in the javascript console)
-----------------------------------------------------------------
*/
function update(){
    ddb.updateItem(params, function(err, data) {
        if (err) { return console.log(err); }
        console.log("We updated the table with this: " + JSON.stringify(data));
    });
}
/*
-----------------------------------------------------------------
function read()
Description: Calls getItem which is part of the AWS Javascript
SDK.
Returns: JSON object (the object is stringifyed so we can see 
what's going on in the javascript console)
-----------------------------------------------------------------
*/
function read(){
    ddb.getItem(readparams, function(err, data) {
        if (err) { return console.log(err); }
        console.log(": " + data);       

    console.log("John's favorite food is: "+ JSON.stringify(data.Item.food.S)); // print the item data
});
}

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