js 怎么获取request中的参数
2个回答
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你发的是ajax查询
这个不能用el表达式吧，
要后台把值返回后从success:function(json){ // 这个回调里从 这个json变量里获取
这个不能用el表达式吧，
要后台把值返回后从success:function(json){ // 这个回调里从 这个json变量里获取
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js获取request中的参数需要使用脚本参数获取的格式：<%=xxx=%>来获取。
举例如下：
<%@ page language="java" import="java.util.*,com.servlet.bean" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<body>
<script type="text/javascript">
<%
ArrayList list = (ArrayList)request.getAttribute("list");
for(int i=0;i<list.size();i++){
bean Bean = (bean)list.get(i);
%>
var name = '<%=Bean.getName()%>' //这里是从request获取参数，赋值给name这个变量
<%
}
%>
</script>
</body>
</html>
2、在servlet服务端的代码如下：
package com.servlet;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class servlet extends HttpServlet {
public servlet() {
super();
}
/**
* Destruction of the servlet. <br>
*/
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
bean Bean = new bean();
Bean.setName("liubin");
Bean.setPwd("123");
bean Bean2 = new bean();
Bean2.setName("aaa");
Bean2.setPwd("456");
bean Bean3 = new bean();
Bean3.setName("bbb");
Bean3.setPwd("789");
ArrayList list = new ArrayList();
list.add(Bean);
list.add(Bean2);
list.add(Bean3);
request.setAttribute("list", list);
request.getRequestDispatcher("../index.jsp").forward(request, response);
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doGet(request ,response);
}
public void init() throws ServletException {
// Put your code here
}
}
举例如下：
<%@ page language="java" import="java.util.*,com.servlet.bean" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<body>
<script type="text/javascript">
<%
ArrayList list = (ArrayList)request.getAttribute("list");
for(int i=0;i<list.size();i++){
bean Bean = (bean)list.get(i);
%>
var name = '<%=Bean.getName()%>' //这里是从request获取参数，赋值给name这个变量
<%
}
%>
</script>
</body>
</html>
2、在servlet服务端的代码如下：
package com.servlet;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class servlet extends HttpServlet {
public servlet() {
super();
}
/**
* Destruction of the servlet. <br>
*/
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
bean Bean = new bean();
Bean.setName("liubin");
Bean.setPwd("123");
bean Bean2 = new bean();
Bean2.setName("aaa");
Bean2.setPwd("456");
bean Bean3 = new bean();
Bean3.setName("bbb");
Bean3.setPwd("789");
ArrayList list = new ArrayList();
list.add(Bean);
list.add(Bean2);
list.add(Bean3);
request.setAttribute("list", list);
request.getRequestDispatcher("../index.jsp").forward(request, response);
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doGet(request ,response);
}
public void init() throws ServletException {
// Put your code here
}
}
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