java网站，关于jdbc连接池的问题报错

[align=center]项目启动后按F5一直刷新网站主页，
1.刚开始刷新后异常的信息为：java.sql.SQLException: We are already in the process of making 11 connections and the number of simultaneous builds has been throttled to 10
 
2.刷新一段时候后异常的信息为：java.sql.SQLException: Couldn””t get connection because we are at maximum connection count (200/200) and there are none 
 
3.最后报内存溢出异常。[/align]
代码我检查了没问题，pst,rs,conn该关闭的都关闭了，访问主页的19个查询方法也是平级的概念。

@RequestMapping(value = { "indexInfo" }, method = { RequestMethod.GET,
 RequestMethod.POST })
 public ModelAndView indexInfo(HttpServletRequest request,
 HttpServletResponse response, HttpSession session, ModelMap modelMap)
 throws Exception {
  
 List<Map<String, Object>> maps = browseByPicNewsType(7);
 
StringBuffer sb = new StringBuffer();
 StringBuffer sb1 = new StringBuffer();
 StringBuffer sb2 = new StringBuffer();
 for (Map<String, Object> map : maps) {
 sb.append("../");
 sb.append(map.get("IMAGEPATH"));
 sb.append("|");
 
sb1.append("../news_pic/picInfo.do?id=");
 sb1.append(map.get("ID"));
 sb1.append("|");
 
sb2.append(map.get("TITLE"));
 sb2.append("|");
 }
 
modelMap.put("news_pic_imgpath", sb.substring(0, sb.length() - 1));
 modelMap.put("news_pic_url", sb1.substring(0, sb1.length() - 1));
 modelMap.put("news_pic_title", sb2.substring(0, sb2.length() - 1));
 
objList = new ArrayList();
 HashMap optionMap = new HashMap();
 optionMap.put("value", "content");
 optionMap.put("text", "文章");
objList.add(optionMap);
 
optionMap = new HashMap();
 optionMap.put("value", "pics");
 optionMap.put("text", "图片");
objList.add(optionMap);
 
// 经信动态
List<Map<String, Object>> jingxindongtai = getAdminService()
 .select(
 " jxw_news",
 "Id, title, content,newType,userName,hints, issueDate,createdate",
 "newType=9 order by createdate desc limit 0,9");
 modelMap.put("jingxindongtai", jingxindongtai);
 
// 领导讲话
List<Map<String, Object>> lingdaojianghua = getAdminService()
 .select(
 " jxw_news",
 "Id, title, content,newType,userName,hints, issueDate,createdate",
 "newType=4 order by createdate desc limit 0,10");
 modelMap.put("lingdaojianghua", lingdaojianghua);
 
// 政策文件
List<Map<String, Object>> zhengcewenjian = getAdminService()
 .select(
 " jxw_news",
 "Id, title, content,newType,userName,hints, issueDate,createdate",
 "newType=10 order by createdate desc limit 0,10");
 modelMap.put("zhengcewenjian", zhengcewenjian);
 
// 机关党建
List<Map<String, Object>> jiguandangjian = getAdminService()
 .select(
 " jxw_news",
 "Id, title, content,newType,userName,hints, issueDate,createdate",
 "newType=37 order by createdate desc limit 0,10");
 modelMap.put("jiguandangjian", jiguandangjian);
 
// 县区工作
List<Map<String, Object>> xianqugongzuo = getAdminService()
 .select(
 " jxw_news",
 "Id, title, content,newType,userName,hints, issueDate,createdate",
 "newType=40 order by createdate desc limit 0,10");
 modelMap.put("xianqugongzuo", xianqugongzuo);
 
// 综合信息
List<Map<String, Object>> zonghexinxi = getAdminService()
 .select(
 " jxw_news",
 "Id, title, content,newType,userName,hints, issueDate,createdate",
 "newType=2 order by createdate desc limit 0,10");
 modelMap.put("zonghexinxi", zonghexinxi);
 
// 经信知识
List<Map<String, Object>> jingxinzhishi = getAdminService()
 .select(
 " jxw_news",
 "Id, title, content,newType,userName,hints, issueDate,createdate",
 "newType=64 order by createdate desc limit 0,10");
 modelMap.put("jingxinzhishi", jingxinzhishi);
 
// 政策法规
List<Map<String, Object>> zhengcefagui = getAdminService()
 .select(
 " jxw_news",
 "Id, title, content,newType,userName,hints, issueDate,createdate",
 "newType=3 order by createdate desc limit 0,10");
 modelMap.put("zhengcefagui", zhengcefagui);
 
// 政策法规 国资委
List<Map<String, Object>> zhengcefaguigzw = getAdminService()
 .select(
 " jxw_news",
 "Id, title, content,newType,userName,hints, issueDate,createdate",
 "newType=160 order by createdate desc limit 0,15");
 modelMap.put("zhengcefaguigzw", zhengcefaguigzw);
 
// 国资动态
List<Map<String, Object>> guozidongtai = getAdminService()
 .select(
 " jxw_news",
 "Id, title, content,newType,userName,hints, issueDate,createdate",
 "newType=22 order by createdate desc limit 0,10");
 modelMap.put("guozidongtai", guozidongtai);
 
// 国资动态 国资委
List<Map<String, Object>> guozidongtaigzw = getAdminService()
 .select(
 " jxw_news",
 "Id, title, content,newType,userName,hints, issueDate,createdate",
 "newType=161 order by createdate desc limit 0,15");
 modelMap.put("guozidongtaigzw", guozidongtaigzw);
 
// 通知公告
List<Map<String, Object>> tongzhigonggao = getAdminService()
 .select(
 " jxw_news",
 "Id, title, content,newType,userName,hints, issueDate,createdate",
 "newType=6 order by createdate desc limit 0,10");
 modelMap.put("tongzhigonggao", tongzhigonggao);
 
// 企业资讯
List<Map<String, Object>> qiyezixun = getAdminService()
 .select(
 " jxw_news",
 "Id, title, content,newType,userName,hints, issueDate,createdate",
 "newType=16 order by createdate desc limit 0,10");
 modelMap.put("qiyezixun", qiyezixun);
 
// 企业动态
List<Map<String, Object>> qiyedongtai = getAdminService()
 .select(
 " jxw_news",
 "Id, title, content,newType,userName,hints, issueDate,createdate",
 "newType=17 order by createdate desc limit 0,10");
 modelMap.put("qiyedongtai", qiyedongtai);
 
// 重点工程
List<Map<String, Object>> zhongdiangongcheng = getAdminService()
 .select(
 " jxw_news",
 "Id, title, content,newType,userName,hints, issueDate,createdate",
 "newType=18 order by createdate desc limit 0,10");
 modelMap.put("zhongdiangongcheng", zhongdiangongcheng);
 
List<Map<String, Object>> rows = getAdminService()
 .select(
 " jxw_renwu",
 "Id, name, content,phone,email,address, createdate, files, type,sortnum,showinfront",
 "type=0 order by createdate");
 
// 经信人物
modelMap.put("renwu", rows);
 
List<Map<String, Object>> rowss = getAdminService()
 .select(
 " jxw_renwu",
 "Id, name, content,phone,email,address, createdate, files, type,sortnum,showinfront",
 "type=1 order by createdate");
 // 经信企业
modelMap.put("qiye", rowss);
 
List<Map<String, Object>> zhuanti = getAdminService()
 .select(
 " jxw_renwu",
 "Id, name, content,phone,email,address, createdate, files, type,sortnum,showinfront",
 "type=2 order by createdate");
 
modelMap.put("zhuanti", zhuanti);
 
List<Map<String, Object>> images = getAdminService()
 .select(
 " jxw_picnews",
 "ID,title,newType,browseImage,imgurl,sortnum,content,createDate,userName,infoSource",
 "browseImage=1 order by sortnum limit 0,5");// sortnum
 // asc
 modelMap.put("images", images);
 modelMap.put("selectOption", objList);
 return new ModelAndView("index2.jsp", modelMap);
 }

连接池配置proxool.xml：
 
<?xml version=”1.0″ encoding=”UTF-8″?>
 <!–
the proxool configuration can be embedded within your own
 application””s. Anything outside the “proxool” tag is ignored.
–>
 <something-else-entirely>
 <proxool>
 <alias>jxw_db</alias>
 <driver-url>jdbc:mysql://192.168.1.111:3306/jxw</driver-url>
 <driver-class>com.mysql.jdbc.Driver</driver-class>
 <driver-properties>
 <property name=”user” value=”root” />
 <property name=”password” value=”rocan2012″ />
 </driver-properties>
 <simultaneousBuildThrottle>69</simultaneousBuildThrottle>
 <minimum-connection-count>20</minimum-connection-count>
 <maximum-connection-count>200</maximum-connection-count>
 <house-keeping-test-sql>select 0</house-keeping-test-sql>
 <trace>true</trace>
 </proxool>
 </something-else-entirely>