Question

我正在尝试使用Jquery .ajax方法访问servlet，如下所示。

function ajaxCall()
    {
     $.ajax({
        type: 'GET',
        dataType:"html",
        url: "http://localhost:7001/Macaw/MacawServlet",
        success:function(data){
         alert(data);
        },
    error:function(){
         alert("failure");
        }                   
    });
    }

Servlet内容：

   package servlet;

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

   import javax.servlet.ServletConfig;
   import javax.servlet.ServletException;
   import javax.servlet.http.HttpServlet;
   import javax.servlet.http.HttpServletRequest;
   import javax.servlet.http.HttpServletResponse;

   import org.jsoup.Jsoup;
   import org.jsoup.nodes.Document;
   import org.jsoup.nodes.Element;


   public class MacawServlet extends HttpServlet {

    private static final long serialVersionUID = 1L;

       public MacawServlet() {
           super();
           // TODO Auto-generated constructor stub
       }

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        response.setContentType("text/html");
        PrintWriter out = response.getWriter();
        File input = new File("C:/Users/540893/workspace/Macaw/WebContent/prpsl_txtsrch.html");
        Document doc = Jsoup.parse(input,"UTF-8");
        Element content = doc.getElementById("text_search");
        Element content1 = doc.getElementById("chr_val_stats");
        Element content2 = doc.getElementById("chr_val_delta");
        out.println(content);
        out.println(content1);
        out.println(content2);
        System.out.println("success");
    }

   }

每次我调用此.ajax函数时，它都会访问servlet并调用.ajax error:function(){}。

为什么不调用.ajax success:function(){}？

Answer 1

你的js和java文件在同一个上下文中吗？

如果是，则不需要在url中使用服务器地址和端口。您可以从/ Macaw / MacawServlet

开始

如果没有，请选中启用跨浏览器ajax调用。

参考 - Firefox setting to enable cross domain ajax request

Ajax从Jquery调用servlet

1 个答案: