请教servlet中怎么获得post来的数据

请教servlet中怎么获得post来的数据

Servlet代码如下：

package servlet;

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

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

import dao.FinancingProductDao;
import entity.FinancingProduct;

public class AddServlet extends HttpServlet {
        
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
//针对post请求，设置允许接收中文
request.setCharacterEncoding("UTF-8");
//设置可以在页面中响应的内容类型及中文
response.setContentType("text/html;charset=UTF-8");
//得到响应流对象
PrintWriter out = response.getWriter();
// 接收数据
String id = request.getParameter("id");
String risk = request.getParameter("risk");
String income = request.getParameter("income");
String saleStarting = request.getParameter("saleStarting");
String saleEnd = request.getParameter("saleEnd");
String end = request.getParameter("end");

//创建实体类
FinancingProduct prod=new FinancingProduct(id, Integer.parseInt(risk), income, saleStarting, saleEnd, end);

// 查询
if(new FinancingProductDao().add(prod)==0){
out.print("");
}else{
out.print("");
}

out.flush();
out.close();
}

}

String paramVal = request.getParameter("参数名称");