Amazon dynamodb Error InvalidParameterType:参数项[';pid';]应为DynamoDB中的结构
注意:所有这些都发生在DynamoDB的本地实例上 这是我用来从DynamoDB Shell创建表的代码:Amazon dynamodb Error InvalidParameterType:参数项[';pid';]应为DynamoDB中的结构,amazon-dynamodb,dynamo-local,Amazon Dynamodb,Dynamo Local,注意:所有这些都发生在DynamoDB的本地实例上 这是我用来从DynamoDB Shell创建表的代码: var params = { TableName: "TABLE-NAME", KeySchema: [ { AttributeName: "pid", KeyType: "HASH" } ], AttributeDefinitions: [ { AttributeName: "pid",
var params = {
TableName: "TABLE-NAME",
KeySchema: [
{ AttributeName: "pid",
KeyType: "HASH"
}
],
AttributeDefinitions: [
{ AttributeName: "pid",
AttributeType: "S"
}
],
ProvisionedThroughput: {
ReadCapacityUnits: 1,
WriteCapacityUnits: 1
}
};
dynamodb.createTable(params, function(err, data) {
if (err)
console.log(JSON.stringify(err, null, 2));
else
console.log(JSON.stringify(data, null, 2));
});
这是为将元素添加到DB(在node.js中)而调用的函数:
我得到的结果是:
{ TableName: 'TABLE-NAME',
Item: { pid: 'abc123' } } // THIS IS PARAMS
{
"message": "There were 7 validation errors:\n* InvalidParameterType: Expected params.Item['pid'] to be a structure\n* UnexpectedParameter: Unexpected key '0' found in params.Item['pid']\n* UnexpectedParameter: Unexpected key '1' found in params.Item['pid']\n* UnexpectedParameter: Unexpected key '2' found in params.Item['pid']\n* UnexpectedParameter: Unexpected key '3' found in params.Item['pid']\n* UnexpectedParameter: Unexpected key '4' found in params.Item['pid']\n* UnexpectedParameter: Unexpected key '5' found in params.Item['pid']",
"code": "MultipleValidationErrors",
"errors": [
{
"message": "Expected params.Item['pid'] to be a structure",
"code": "InvalidParameterType",
"time": "2015-11-26T15:51:33.932Z"
},
{
"message": "Unexpected key '0' found in params.Item['pid']",
"code": "UnexpectedParameter",
"time": "2015-11-26T15:51:33.933Z"
},
{
"message": "Unexpected key '1' found in params.Item['pid']",
"code": "UnexpectedParameter",
"time": "2015-11-26T15:51:33.933Z"
},
{
"message": "Unexpected key '2' found in params.Item['pid']",
"code": "UnexpectedParameter",
"time": "2015-11-26T15:51:33.933Z"
},
{
"message": "Unexpected key '3' found in params.Item['pid']",
"code": "UnexpectedParameter",
"time": "2015-11-26T15:51:33.933Z"
},
{
"message": "Unexpected key '4' found in params.Item['pid']",
"code": "UnexpectedParameter",
"time": "2015-11-26T15:51:33.934Z"
},
{
"message": "Unexpected key '5' found in params.Item['pid']",
"code": "UnexpectedParameter",
"time": "2015-11-26T15:51:33.934Z"
}
],
"time": "2015-11-26T15:51:33.944Z"
}
我不明白为什么或者如何得到键0、1、2、3、4和5,而它们在前一行打印时不存在
另外,如何将错误预期参数项['pid']修复为结构
?我已将其声明为字符串,并正在尝试存储字符串
其他说明:
当我在shell上运行它时,我在函数中使用的代码工作得很好。我还包括了aws sdk,并根据需要对其进行了配置:
var AWS = require('aws-sdk');
AWS.config.region = 'us-east-1';
AWS.config.endpoint = 'http://localhost:8000/'
var dynamodb = new AWS.DynamoDB();
注意:此答案可能不再有效,如以下多条评论所述。 从nodejs向数据库中添加记录必须使用的函数是
put
,而不是DynamoDB shell中使用的putItem
。将上述功能更改为以下功能将其修复
function(request, response) {
params = {
TableName: 'TABLE-NAME',
Item: {
pid: 'abc123'
}
};
console.log(params);
dynamodb.put(params, function(err, data) {
if (err)
console.log(JSON.stringify(err, null, 2));
else
console.log(JSON.stringify(data, null, 2));
});
}
类上的方法要求将params.Item
对象格式化为AttributeValue表示形式。这意味着您必须更改此选项:
params={
TableName:“TABLE-NAME”,
项目:{
pid:'abc123'
}
};
为此:
params={
TableName:“TABLE-NAME”,
项目:{
pid:{
S:‘abc123’
}
}
};
如果要使用本机javascript对象,应使用类,该类会自动将javascript类型封送到DynamoDB AttributeValue上,如下所示:
- 字符串->S
- 数字->N
- 布尔->布尔
- 空->空
- 数组->L
- 对象->M
- 缓冲区、文件、Blob、ArrayBuffer、DataView和JavaScript类型的数组->B
它提供了一种方法,委托给。
put
未在处记录,当我尝试使用它时,我得到一个错误:“TypeError:dynamodb.put不是一个函数”.put不是Dynamo DB的函数,而是Dynamo的文档客户端的函数,通过文档,它是文档客户端抽象,使用AWS SDK for JavaScript可以更轻松地向Amazon DynamoDB读取和写入数据。过来看
function(request, response) {
params = {
TableName: 'TABLE-NAME',
Item: {
pid: 'abc123'
}
};
console.log(params);
dynamodb.put(params, function(err, data) {
if (err)
console.log(JSON.stringify(err, null, 2));
else
console.log(JSON.stringify(data, null, 2));
});
}