通过POST请求通过AJAX将数据从表发送到Servlet

Question

I have a JSP with a table and once the 'submit' button is pressed I would like to send all the information from the table to a servlet through AJAX via POST request.

I have set up the request and response via the servlet and it is tested and working for a few variables.

However, I would like to know, whats the best way to send a lot of information, ie information from the table? The table could have 30-40 rows with each row having three columns. I need to preserve the information for each row since each row is processed independently of the others.

Answer 1

I would like to know, whats the best way to send a lot of information through AJAX

You can use JSON or XML to send the table data that contains records one for each row. You can use various JSON or XML parsing library to form java object back from JSON or XML string and vice-verse.

You can use GSON and JSON library for this purpose.

Answer 2

While adding the rows you can create the tree kind of structure in the frontend. That could be some thing like this :

Each row will be an object and it has three attribute eg :

var rows_data = {firstName:"amit", lastName:"kumar", age:28};

Keep adding this rows into the array using javascript.

var rowArray= []; rowArray.push(rows_data);

While posting you can post this javascript array and from the servlet iterate the list and process the results.

Hope it helps to solve your problem.