List<Map<String, Object>> list_new = new ArrayList<Map<String, Object>>();

//新建list集合对象，用于存储新的数据

for (Map<String, Object> map : list) {//list为数据库查询出来的数据

　　Long jxjhid=Long.valueOf(map.get("jxjhid").toString());

　　//上面的是获取jxjh的值

　　String mc_new="";

　　if(jxjhid==1){

　　　　mc_new="计划";

　　}else{

　　　　mc_new="不计划";

　　}

　　

　　map.put("sfjh", mc_new);

　　list_new .add(map);

}
//另外一种方式
//不要下面两行代码

List<Map<String, Object>> list_new = new ArrayList<Map<String, Object>>();　　
list_new .add(map);

List<Map<String, Object>> list_new = new ArrayList<Map<String, Object>>();

Map<String, Object> map1=new HashMap<String, Object>();

map1.put("ks", "01");

map1.put("js", "10");

list_new.add(map1);

Map<String, Object> map2=new HashMap<String, Object>();

map2.put("ks", "01");

map2.put("js", "10");

list_new.add(map2);

for (Map<String, Object> map : list_new) {

    map.remove("js");

}

List<Map<String, Object>> list_new = new ArrayList<Map<String, Object>>();

Map<String, Object> map1=new HashMap<String, Object>();

map1.put("ks", "01");

map1.put("js", "10");

list_new.add(map1);

Map<String, Object> map2=new HashMap<String, Object>();

map2.put("ks", "01");

map2.put("js", "10");

list_new.add(map2);

for (Map<String, Object> map : list_new) {

    map.put("js","11");

}

//公司wh框架的使用方法
String sql="select * from jxap "

//  + " left outer join (select jxjhid,ks from jxjh) jxjh on jxjh.jxjhid=jxap.jxjhid"

    + " where jxap.jlztm=51 and jxap.bjid=:bjid and jxap.jxjhid in(select jxjhid from jxjh where xqm=:xqm )";

SqlCommandImpl sci=new SqlCommandImpl(sql);

sci.setInt("bjid", bjid);

sci.setInt("xqm", xqm);

List<Map<String, Object>> list=gdba.selectAsMapList(sci,jxap);

//普通的框架
List<Map<String, Object>> list = new ArrayList<Map<String, Object>>();

　// 关闭连接flag

boolean colseFlag = false;

  // 打开DB链接

if (this.connection == null) {

  this.connection = this.getDbConnection();

  colseFlag = true;

}

PreparedStatement preStat = null;

preStat = this.connection.prepareStatement(sql);

ResultSet rs = null;

Map<String, Object> map = null;

rs = preStat.executeQuery();

  // 生成ResultSetMetaData

ResultSetMetaData rsMeta = preStat.getMetaData();

while (rs.next()) {

   map = this.Result2Map(rs, rsMeta);

   // 追加到list中

   list.add(map);

  }