小编典典

没有显示问题,但不起作用-dwr

jsp

大家好,我正在使用dwr处理java-servlet中的ajax调用,

这是我的dwr.xml,

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE dwr PUBLIC
"-//GetAhead Limited//DTD Direct Web Remoting 2.0//EN"
"http://getahead.org/dwr/dwr20.dtd">
<dwr>
    <allow>
        <create creator="new" javascript="TempCardServlet">
            <param name="class" value="com.slingmeadia.notifier.servlet.TempCardServlet"/>
        </create>
    </allow>
</dwr>

这是我的servlet文件,因此我将

package com.slingmeadia.notifier.servlet;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.LinkedHashMap;
import java.util.Map;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;


public class TempCardServlet extends HttpServlet {
 @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {


        String funtionType="";
        if(request.getParameter("functiontype")!=null){
            funtionType = (String)request.getParameter("functiontype");
        }
        if(funtionType.equals("logout")){
            processLogout(request, response);
        }else{

        }

    }
@Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processLogout(request, response);
    }
    public Map sampleFill(int empid,String functiontype){
      System.out.println("functiontype : "+functiontype);
        Map employeeData = new LinkedHashMap();
        if(functiontype.equals("add")){
            employeeData.put("name", "Antony");
        }else{
            employeeData.put("name", "Antony");
            employeeData.put("cardnumber", "87896857852");
            employeeData.put("issuedate", "17/01/2012");
        }
        return employeeData;
    }


}

这就是我从jsp文件中调用方法的方式:

<script src='dwr/engine.js'></script>
        <script src='dwr/util.js'></script>
        <script src='dwr/interface/TempCardServlet.js'></script>

        <script>
            function getValues(id) {
                var empid = id.value;
                var optionValue = document.getElementById("selectedOption").value;
                TempCardServlet.sampleFill(empid,optionValue,{callback:setValues,async:false});
            }
            function setValues(tempcardMap) {
                if(tempcardMap !=null){
                    document.getElementById("empname").value=tempcardMap.name;
                    document.getElementById("tempcardnumber").value=tempcardMap.cardnumber;
                    document.getElementById("dateofissue").value=tempcardMap.issuedate;
                }
            }
</script>

这就是我如何调用javascript方法:

<td width="55%"><input class="inputBoxes" type="text" name="empid" id="empid" onblur="getValues(this)" /></td>

看起来一切都安排得很好,没有问题,但它没有用,也没有任何不适。

我也尝试过喜欢

在我输入的网址中 http://localhost:8080/acct/dwr/index.html

它提供了DWR已知的类的列表:当我尝试从浏览器打开类文件并提供一些示例输入时,我的类文件也存在,但没有给出任何错误,也没有输出。

请帮助我解决此问题。

问候。


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2020-06-10

共1个答案

小编典典

1.检查DWR路径

如果您要在WEB-INF中包含查看文件,则

<script src='dwr/engine.js'></script>         
<script src='dwr/util.js'></script>         
<script src='dwr/interface/TempCardServlet.js'></script>

引用此方式将起作用。如果不是这样,则必须给出如下所示的正确路径

<script src='../dwr/engine.js'></script> 
<script src='../dwr/util.js'></script> 
<script src='../dwr/interface/TempCardServlet.js'></script>
2020-06-10