Question

关于HashMap<Integer,HashMap<String,String>>的问题 纠结了许久 请高手帮忙解决

我定义了一个两个哈希，一个是HashMap<String,String>用于存每个流程的详细信息，另一个HashMap<Integer,HashMap<String,String>>用于将各个流程汇总。需要从数据库中读取每条流程存入HashMap<String,String>，再将HashMap<String,String>存入HashMap<Integer,HashMap<String,String>>，测试时一共15条记录，最后的结果是每存一条信息流程就把之前的给覆盖了，请各位帮忙看下是什么问题，谢谢。

打印结果为：

{0={exetime=4, editor=null, status=null, trigtype=2, proname=爱爱爱tt, remarks=null, protype=1, execycle=3}}

{0={exetime=4, editor=null, status=null, trigtype=2, proname=爱爱爱fghf, remarks=null, protype=1, execycle=3}, 1={exetime=4, editor=null, status=null, trigtype=2, proname=爱爱爱fghf, remarks=null, protype=1, execycle=3}}

{0={exetime=213, editor=null, status=null, trigtype=234, proname=测试1, remarks=null, protype=123, execycle=3243}, 1={exetime=213, editor=null, status=null, trigtype=234, proname=测试1, remarks=null, protype=123, execycle=3243}, 2={exetime=213, editor=null, status=null, trigtype=234, proname=测试1, remarks=null, protype=123, execycle=3243}}

代码为：

int i = 0;

HashMap<String,String> processDetail = new HashMap<String,String>();

HashMap<Integer,HashMap<String,String>> processDetailSummary = new HashMap<Integer,HashMap<String,String>>();

try {

stmt = conn.createStatement();

ResultSet res = stmt.executeQuery(detailSql);

while (res.next())

{

processDetail.put("proname", res.getString("PRONAME"));

processDetail.put("protype", res.getString("PROTYPE"));

processDetail.put("trigtype", res.getString("TRIGTYPE"));

processDetail.put("execycle", res.getString("EXECYCLE"));

processDetail.put("exetime", res.getString("EXETIME"));

processDetail.put("editor", res.getString("EDITOR"));

processDetail.put("remarks", res.getString("REMARKS"));

processDetail.put("status", res.getString("STATUS"));

processDetailSummary.put(i++, processDetail);

System.out.println(processDetailSummary);

}

}

Answer 1

你把i++改成++i吧
现在你的应该是先把key装进去再++，所以一直有重复的