java通過HttpServletRequest獲取post請求中的body內容的方法

package com.lenovo.servlet;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

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

import org.apache.commons.lang.StringUtils;
import org.apache.log4j.Logger;

import com.alibaba.dubbo.common.utils.IOUtils;
import com.lenovo.service.BusinessService;
import com.lenovo.utils.WebContext;
public class BusinessServlet extends HttpServlet{
 public static final Logger log = Logger.getLogger(BusinessServlet.class);
 
 /**
 * 
 */
 private static final long serialVersionUID = 1L;
 private static BusinessService service;
 static{
 service = (BusinessService) WebContext.getBean("businessService"); 
 }
 @Override
 protected void doGet(HttpServletRequest req, HttpServletResponse resp)
  throws ServletException, IOException {
 doPost(req, resp);
 }
 @Override
 protected void doPost(HttpServletRequest req, HttpServletResponse res)
  throws ServletException, IOException {
 
 BufferedReader reader = new BufferedReader(new InputStreamReader(req.getInputStream()));
 String body = IOUtils.read(reader);
 String name = req.getParameter("name");
 if(StringUtils.isNotBlank(body)){
  log.info("business receive somthing with body :"+body);
 }
 res.setCharacterEncoding("UTF-8");
 res.setContentType("application/json");
 res.setStatus(HttpServletResponse.SC_OK);
 res.getWriter().println(service.getName(name));
 }
 
}