Java 使用servlet获取并发送字符串[]数组中的数据 inti=0; 字符串[]pnumbers=新字符串[3]; 字符串[]pqtys=新字符串[3]; 受保护的void doPost(HttpServletRequest请求、HttpServletResponse响应) 抛出ServletException、IOException{ 字符串pnumber=request.getParameter(“pnumber”); DAO=新DAO(); 产品p=dao.checkProduct(产品编号); 字符串qunty=request.getParameter(“pqty”); 而(i
我需要在这个数组中添加3个来自网页的项目。但是你可以添加一项Java 使用servlet获取并发送字符串[]数组中的数据 inti=0; 字符串[]pnumbers=新字符串[3]; 字符串[]pqtys=新字符串[3]; 受保护的void doPost(HttpServletRequest请求、HttpServletResponse响应) 抛出ServletException、IOException{ 字符串pnumber=request.getParameter(“pnumber”); DAO=新DAO(); 产品p=dao.checkProduct(产品编号); 字符串qunty=request.getParameter(“pqty”); 而(i,java,jsp,servlets,Java,Jsp,Servlets,我需要在这个数组中添加3个来自网页的项目。但是你可以添加一项 int i = 0; String[] pnumbers = new String[3]; String[] pqtys = new String[3]; protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
int i = 0;
String[] pnumbers = new String[3];
String[] pqtys = new String[3];
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String pnumber = request.getParameter("pnumber");
DAO dao = new DAO();
Product p = dao.checkProduct(pnumber);
String qunty = request.getParameter("pqty");
while (i < 3) {
pnumbers[i] = p.getNumber();
pqtys[i] = p.getQty();
i++;
}
request.setAttribute("pnum" pnumbers);
}
我只需要添加3个项目的数组后,添加这3个我需要得到的值再次到同一页请帮助 一旦您在Servlet中像以前一样设置了属性
<td>
<input type="text" name="pnumber" value="" />
</td>
<td>
<input type="text" name="pqty" value="" />
</td>
将控制从Servlet转发到所需的JSP,您可以使用
request.getAttribute(paramName)
提示:
if(request.getAttribute(“pnum”)!=null){
String[]strArray=(String[])request.getAttribute(“pnum”);
对于(int i=0;iyou html代码不使用循环来显示3种产品和数量。您能详细说明您的查询吗?
request.setAttribute("pnum" pnumbers);
if(request.getAttribute("pnum")!=null){
String []strArray = (String []) request.getAttribute("pnum");
for(int i=0;i<strArray.length;i++){
out.println(strArray[i]);
}
}