我正在创建一个带有web表单的应用程序，当用户单击"提交"时，数据被添加到DynamoDB表中。
我的web表单的HTML代码包括一个API(使用API Gateway创建)，它触发一个Lambda函数，该函数应该解析数据并将其放在DynamoDB中。然而，当我提交web表单时，我得到了一个Unexpected token Z in JSON at position 0错误。
下面是我的HTML代码:
<!DOCTYPE html>
<html lang="en-US">
<body>
<p>Sign-Up Form</p>
<form action="https://XXXXXXXXXX.execute-api.us-east-1.amazonaws.com/Prod/submit" method="post">
<ul>
<li>
<label for="first_name">First Name:</label>
<input type="text" id="first_name" name="first_name" required>
</li>
<li>
<label for="last_name">Last Name:</label>
<input type="text" id="last_name" name="last_name" required>
</li>
<li>
<label for="mail">E-mail:</label>
<input type="email" id="mail" name="user_email" required>
</li>
<li>
<label for="region">Which region are you based in?</label>
<select name="region" id="region" required>
<option value="">--Select--</option>
<option value="emea">EMEA</option>
<option value="amer">AMER</option>
<option value="apj">APJ</option>
</select>
</li>
<li class="button">
<button type="submit">Submit Sign-Up Form</button>
</li>
</ul>
</form>
</body>
</html>
这是我的Lambda函数:
const AWS = require("aws-sdk");
const dynamo = new AWS.DynamoDB.DocumentClient();
exports.handler = async (event, context) => {
let body;
let statusCode = 200;
const headers = {
"Content-Type": "application/json"
};
try {
switch (event.routeKey) {
case "POST /items":
let requestJSON = JSON.parse(event.body);
await dynamo
.post({
TableName: "XXXXXX",
Item: {
first_name: requestJSON.first_name,
last_name: requestJSON.last_name,
user_email: requestJSON.user_email,
region: requestJSON.region
}
})
.promise();
body = `Put item ${requestJSON.user_email}`;
break;
default:
throw new Error(`Unsupported route: "${event.routeKey}"`);
}
} catch (err) {
statusCode = 400;
body = err.message;
} finally {
body = JSON.stringify(body);
}
return {
statusCode,
body,
headers
};
};
表单不以JSON格式发送数据。表单发送application/x-www-form-urlencode内容类型。您可以使用URLSearchParams对象来处理表单数据。