获取SqlServer数据库数据，转成JSON对象

研究了很多天，终于能够把数据库获取的数据成功转换成jsonObject对象

 

 

重要代码：

 

NoticeDaoImpl.java

try {
   conn3 = DBUtil.getConnection();
   st3 = conn3.createStatement();
   rs3 = st3
     .executeQuery("SELECT [noticeID],[range],[expiration],[title],[info]"
       + ",[orgID],[depID],[usersID],[affix],[logDate]"
       + " FROM [WisdomOffice].[dbo].[Notice]");
   result3.append("{'noticeList':[");
   if (rs3 != null) {
    while (rs3.next()) {
     int id = rs3.getInt(1);
     String range = rs3.getString(2);
     String expiration = rs3.getString(3);
     String title = rs3.getString(4);
     String info = rs3.getString(5);
     int orgId = rs3.getInt(6);
     int depid = rs3.getInt(7);
     int userId = rs3.getInt(8);
     String affix = rs3.getString(9);
     String logDate = rs3.getString(10);
     if (info != null)
      info = info.replaceAll("\\s","");
     result3.append("{'noticeId':'" + id + "','range':'" + range
       + "','expiration':'" + expiration + "','title':'"
       + title + "','info':'" + info + "','orgID':'"
       + orgId + "','depID':'" + depid + "','usersID':'"
       + userId + "','affix':'" + affix + "','logDate':'"
       + logDate + "'}");

     if (!rs3.isLast()) {
      result3.append(",");
     }
    }
   }
   result3.append("]}");
   System.out.println(result3.toString());

  } catch (sqlException e) {
   // Todo Auto-generated catch block
   e.printstacktrace();
   result3.append("{'operating':'查询出错了'}]}");
  } finally {
   DBUtil.freeDB(rs3,st3,conn3);
  }

 

 

SbgStatisticsHandler.java

 

/**
  * 查询所有
  *
  * @return
  */
 public JSONObject handleIV() {

  try {
   System.out.println("11Try");
   StringBuffer sb = impl.getNoticeAll();
   JSONObject object9 = JSONObject.fromObject(sb.toString());
   System.out.println(sb.toString());
   return object9;
  } catch (Exception e) {
   System.out.println("erroratch");
   e.printstacktrace();
   String str = "{errorcode:'0',errormsg:'查询失败'}";
   JSONObject object = JSONObject.fromObject(str);
   return object;
  }

 }

 

TestServlet.java

@Override
 protected void service(HttpServletRequest request,
   HttpServletResponse response) throws servletexception,IOException {
  // Todo Auto-generated method stub

  response.setCharacterEncoding("UTF-8");

  response.setHeader("content-type","text/html;charset=UTF-8");

  PrintWriter writer = response.getWriter();
  switch (4) {
  case 0:// 查询公司名称
   JSONObject jsonObject = handler.handle();
   writer.write(jsonObject.toString());
   break;
  case 1:// 按Id查询
   JSONObject object = handler.handleI(11);
   writer.write(object.toString());
   break;
  case 2:// 按Id删除
   JSONObject object1 = handler.handleII(188);
   writer.write(object1.toString());
   break;
  case 3:// 按Id和userId更新
   // object = handler.handleIII(189);
   // writer = response.getWriter();
   // writer.write(object.toString());
   break;
  case 4:// 查询所有
   JSONObject object3 = handler.handleIV();
   writer.write(object3.toString());
   break;
  }
 }

 

在研究中遇到了一个问题：json unterminated string at character

最后是因为我的sqlServer数据库中获取的数据里面有换行空格或制表符等特殊符号，我添加了这个判断后，就好了：  

  if (info != null)
      info = info.replaceAll("\\s","");

 

 

2014.4.29

Ida

莹和视兴