Java ajax将值从jsp传递给servlet

我试图通过ajax将jsp等基本值传递给servlet.我尝试了一切,但只传递了null.甚至console.log(val)也不会向浏览器控制台打印任何内容.

我的理解是：网页有表单值,提交调用js文件. js有一个调用servlet并传递表单数据的ajax. servlet通过request.getParameter(val)从ajax中获取数据

这是我的代码：

main.jsp中

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<Meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js" type="text/javascript">
<script src="js/main.js" type="text/javascript"></script>
</head>
<body>

<form method="post" action="Main" id="f@R_502_6447@tform">
    <h1>Enter name:</h1>
    <input type="text" name="id" id="id" />
    <input type="submit" name="submit"/>
</form>

</body>
</html>

main.js

var form = $('#f@R_502_6447@tform');
console.log("gi");
form.submit(function()
{
    $.ajax({
        url: 'Main',
        data: form.serialize(),
        type: 'post',
        success: function(data){ 
            console.log(data);
        }
            });

    //return false;

});

Main.java

package servlets;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.servletexception;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Servlet implementation class Main
 */
@WebServlet("/Main")
public class Main extends HttpServlet {
    private static final long serialVersionUID = 1L;

    /**
     * @see HttpServlet#HttpServlet()
     */
    public Main() {
        super();
        // Todo Auto-generated constructor stub
    }

    /**
     * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
     */
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws servletexception, IOException {
        // Todo Auto-generated method stub
        int ids;
        response.setContentType("text/html;charset=UTF-8");

        PrintWriter out = response.getWriter();
        String val = request.getParameter("id");
        System.out.print(val);
        if(val != null){
            ids = Integer.parseInt(val);
            out.print(ids); //
        }

    }

    /**
     * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
     */
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws servletexception, IOException {
        // Todo Auto-generated method stub
    }

}

**问题：
1)从jsp传递给servlet的值
2)console.log不会在浏览器控制台上打印任何内容

1)工作,但2)仍然没有.**

解决方法:

在main.js类型中是type：’post’,你在get方法中编写了代码
输入：’get’

Java ajax将值从jsp传递给servlet

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