亚马逊 DynamoDB 和 AngularJS [英] Amazon DynamoDB and AngularJS

问题描述

因此，我创建了一个 AWS dynamoDB 表(数据库)，并且准备好使用 AngularJS 获取该数据.我如何用 AngularJS 做到这一点?我需要在亚马逊上设置其他服务吗?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?

我无法直接找到与 DynamoDB 和 AngularJS 相关的任何内容.任何帮助将不胜感激！

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示例，可以开始使用 AWS SDK for JavaScript v2.1.33.换出自己的钥匙.这只是一个演示，不要硬编码密钥，可以改用 AWS Cognito.查看几个 AWS 问题的屏幕截图.

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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