新手问题 Hashtable

Question

applyTypeHash.put("applyId", Constants.FM_produceOrder004_NAME);
applyTypeHash.put("applyName", "跨销售组织转单流程");
applyTypeList.add(applyTypeHash); applyTypeHash.put("applyId", Constants.FM_produceOrder005_NAME);
applyTypeHash.put("applyName", "销售订单变更流程");
applyTypeList.add(applyTypeHash);
为什么我applyTypeList两组数 都一样啊
应该怎么写？

Answer 1

List applyTypeList = new ArrayList();
Hashtable applyTypeHash = new Hashtable(); applyTypeHash.put("applyId", Constants.FM_produceOrder001_NAME);
applyTypeHash.put("applyName", "出口车价格及合同变更审核流程");
applyTypeList.add(applyTypeHash); applyTypeHash.put("applyId", Constants.FM_produceOrde002r_NAME);
applyTypeHash.put("applyName", "海外技术订单、确定订单撤单申请");
applyTypeList.add(applyTypeHash); applyTypeHash.put("applyId", Constants.FM_produceOrder003_NAME);
applyTypeHash.put("applyName", "技术/确定订单改单审批流程");
applyTypeList.add(applyTypeHash); applyTypeHash.put("applyId", Constants.FM_produceOrder004_NAME);
applyTypeHash.put("applyName", "跨销售组织转单流程");
applyTypeList.add(applyTypeHash); applyTypeHash.put("applyId", Constants.FM_produceOrder005_NAME);
applyTypeHash.put("applyName", "销售订单变更流程");
applyTypeList.add(applyTypeHash);

request.setAttribute("applyType", applyTypeList);

Answer 2

你加到同一个Hashtable里？Key不能相同，不然就会覆盖

Answer 3

你的Key都一样，到最后就只剩最后加的了

Answer 4

我想他像数据库读出那样<logic:iterate id="" name="">我在jsp页面输出
我该怎么样，才能做成这样啊

Answer 5

你的意思不是很明白。最简单的，你直接把id作为key，name作为value就行

Answer 6

Map applyTypeHash=new Hashtable();
Hashtable applyTypeHash = new Hashtable(); applyTypeHash.put("applyId", Constants.FM_produceOrder001_NAME); 
applyTypeHash.put("applyName", "出口车价格及合更审核流程"); 
applyTypeList.add(applyTypeHash); applyTypeHash =new new Hashtable(); 
applyTypeHash.put("applyId", Constants.FM_produceOrder002_NAME); 
applyTypeHash.put("applyName", "出口车价变更审核流"); 
applyTypeList.add(applyTypeHash); applyTypeHash =new new Hashtable(); 
applyTypeHash.put("applyId", Constants.FM_produceOrder003_NAME); 
applyTypeHash.put("applyName", "出口车变更审核流程"); 
applyTypeList.add(applyTypeHash); 这样就可以了。

Answer 7

你错误的原因在于你用的都是同一个applyTypeHash! 换句话说：
Map applyTypeHash=new Hashtable(); 
Hashtable applyTypeHash = new Hashtable(); applyTypeHash.put("applyId", Constants.FM_produceOrder001_NAME); 
applyTypeHash.put("applyName", "出口车价格及合更审核流程"); 
applyTypeList.add(applyTypeHash); applyTypeHash.put("applyId", Constants.FM_produceOrder002_NAME); 
这样你的list里的值也会变成Constants.FM_produceOrder002_NAME.