解析应用名称并为每种类型生成字符串

Question

我有以下应用名称，它们按每种类型分类，如下所示：

#Below is for `app_kop_az1` type
app_kop_az1_hello
app_kop_az1_world
app_kop_az1_laguna
app_kop_az1_jolla

#Below is for `app_kop_az2` type
app_kop_az2_depot
app_kop_az2_friday
app_kop_az2_curad
app_kop_az2_daily

#Below is for `app_toy_az1` type
app_toy_az1_users
app_toy_az1_web
app_toy_az1_metrics
app_toy_az1_advert

#Below is for `app_toy_az2` type
app_toy_az2_exper
app_toy_az2_views
app_toy_az2_access
app_toy_az2_sas

#Below is for `app_wer_az1` type
app_wer_az1_dart
app_wer_az1_logical
app_wer_az1_trojan
app_wer_az1_table

#Below is for `app_wer_az2` type
app_wer_az2_cache
app_wer_az2_desco
app_wer_az2_peeko
app_wer_az2_loopo

所以我总共有 6 种类型，如下所示：

app_kop_az1
app_kop_az2
app_toy_az1
app_toy_az2
app_wer_az1
app_wer_az2

现在我需要以这样的方式存储上述数据，以便最后我可以生成这样的字符串。对于每种类型，我需要制作五行，其中每一行都是其他类型的应用名称（不包括我们正在处理的那个）。

if_process_look app_kop_az1.* then add_pc pc_kop_az2 app_kop_az2_depot app_kop_az2_friday app_kop_az2_curad app_kop_az2_daily
if_process_look app_kop_az1.* then add_pc pc_toy_az1 app_toy_az1_users app_toy_az1_web app_toy_az1_metrics app_toy_az1_advert
if_process_look app_kop_az1.* then add_pc pc_toy_az2 app_toy_az2_exper app_toy_az2_views app_toy_az2_access app_toy_az2_sas
if_process_look app_kop_az1.* then add_pc pc_wer_az1 app_wer_az1_dart app_wer_az1_logical app_wer_az1_trojan app_wer_az1_table
if_process_look app_kop_az1.* then add_pc pc_wer_az2 app_wer_az2_cache app_wer_az2_desco app_wer_az2_peeko app_wer_az2_loopo

if_process_look app_kop_az2.* then add_pc pc_kop_az1 app_kop_az1_hello app_kop_az1_world app_kop_az1_laguna app_kop_az1_jolla  
if_process_look app_kop_az2.* then add_pc pc_toy_az1 app_toy_az1_users app_toy_az1_web app_toy_az1_metrics app_toy_az1_advert
if_process_look app_kop_az2.* then add_pc pc_toy_az2 app_toy_az2_exper app_toy_az2_views app_toy_az2_access app_toy_az2_sas
if_process_look app_kop_az2.* then add_pc pc_wer_az1 app_wer_az1_dart app_wer_az1_logical app_wer_az1_trojan app_wer_az1_table
if_process_look app_kop_az2.* then add_pc pc_wer_az2 app_wer_az2_cache app_wer_az2_desco app_wer_az2_peeko app_wer_az2_loopo

if_process_look app_toy_az1.* then add_pc pc_kop_az1 app_kop_az1_hello app_kop_az1_world app_kop_az1_laguna app_kop_az1_jolla
if_process_look app_toy_az1.* then add_pc pc_kop_az2 app_kop_az2_depot app_kop_az2_friday app_kop_az2_curad app_kop_az2_daily
if_process_look app_toy_az1.* then add_pc pc_toy_az2 app_toy_az2_exper app_toy_az2_views app_toy_az2_access app_toy_az2_sas
if_process_look app_toy_az1.* then add_pc pc_wer_az1 app_wer_az1_dart app_wer_az1_logical app_wer_az1_trojan app_wer_az1_table
if_process_look app_toy_az1.* then add_pc pc_wer_az2 app_wer_az2_cache app_wer_az2_desco app_wer_az2_peeko app_wer_az2_loopo

if_process_look app_toy_az2.* then add_pc pc_kop_az1 app_kop_az1_hello app_kop_az1_world app_kop_az1_laguna app_kop_az1_jolla
if_process_look app_toy_az2.* then add_pc pc_kop_az2 app_kop_az2_depot app_kop_az2_friday app_kop_az2_curad app_kop_az2_daily
if_process_look app_toy_az2.* then add_pc pc_toy_az1 app_toy_az1_users app_toy_az1_web app_toy_az1_metrics app_toy_az1_advert 
if_process_look app_toy_az2.* then add_pc pc_wer_az1 app_wer_az1_dart app_wer_az1_logical app_wer_az1_trojan app_wer_az1_table
if_process_look app_toy_az2.* then add_pc pc_wer_az2 app_wer_az2_cache app_wer_az2_desco app_wer_az2_peeko app_wer_az2_loopo

if_process_look app_wer_az1.* then add_pc pc_kop_az1 app_kop_az1_hello app_kop_az1_world app_kop_az1_laguna app_kop_az1_jolla
if_process_look app_wer_az1.* then add_pc pc_kop_az2 app_kop_az2_depot app_kop_az2_friday app_kop_az2_curad app_kop_az2_daily
if_process_look app_wer_az1.* then add_pc pc_toy_az1 app_toy_az1_users app_toy_az1_web app_toy_az1_metrics app_toy_az1_advert
if_process_look app_wer_az1.* then add_pc pc_toy_az2 app_toy_az2_exper app_toy_az2_views app_toy_az2_access app_toy_az2_sas
if_process_look app_wer_az1.* then add_pc pc_wer_az2 app_wer_az2_cache app_wer_az2_desco app_wer_az2_peeko app_wer_az2_loopo

if_process_look app_wer_az2.* then add_pc pc_kop_az1 app_kop_az1_hello app_kop_az1_world app_kop_az1_laguna app_kop_az1_jolla
if_process_look app_wer_az2.* then add_pc pc_kop_az2 app_kop_az2_depot app_kop_az2_friday app_kop_az2_curad app_kop_az2_daily
if_process_look app_wer_az2.* then add_pc pc_toy_az1 app_toy_az1_users app_toy_az1_web app_toy_az1_metrics app_toy_az1_advert
if_process_look app_wer_az2.* then add_pc pc_toy_az2 app_toy_az2_exper app_toy_az2_views app_toy_az2_access app_toy_az2_sas
if_process_look app_wer_az2.* then add_pc pc_wer_az1 app_wer_az1_dart app_wer_az1_logical app_wer_az1_trojan app_wer_az1_table

我想创建一个Map<String, List<String>>，其中键将是类型名称，值将是该类型的应用程序名称列表，但我很困惑如何使用此映射为每种类型逐行生成上述字符串？像这样使用地图是否正确？

注意：我目前正在使用 Java 7。

Answer 1

您可以尝试使用以下代码结构：

Map<String, List<String>> myMap = ... // create data here

List<String> result = myMap.entrySet()
  .stream()
  .map(e -> {
    String s = "if_process_look " + e.getKey() + ".* ";
    // here you can do internal loop over e.getValue() and add what you want
    //   and concatenate it into one line text
    return s;
  })
  .collect(Collectors.toList());

但还有很多其他方法可以做到这一点。