ionic打包未签名apk

此文阅次

常规打包cordova build --release android

可能会出现的错误

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
:compileReleaseJava                 
注: 某些输入文件使用或覆盖了已过时的 API。                                                                                                                                                                              
注: 有关详细信息, 请使用 -Xlint:deprecation 重新编译。                                                                                                                                                                  
注: 某些输入文件使用了未经检查或不安全的操作。                                                                                                                                                                          
注: 有关详细信息, 请使用 -Xlint:unchecked 重新编译。                                                                                                                                                                                   
:lintVitalRelease                   
F:\work\wosai\code.wosai\edu.k12\k12student\platforms\android\res\values\arrays.xml:3: Error: "country_codes" is not translated in "ar" (Arabic), "bg" (Bulgarian), "ca" (Catalan), "cs" (Czech), "da" (Danish), "de" (G
erman), "el" (Greek), "es" (Spanish), "eu" (Basque), "fi" (Finnish), "fr" (French), "he" (Hebrew), "hi" (Hindi), "hu" (Hungarian), "id" (Indonesian), "it" (Italian), "iw" (Hebrew), "ja" (Japanese), "ko" (Korean), "nl
" (Dutch), "pl" (Polish), "pt" (Portuguese), "ru" (Russian), "sk" (Slovak), "sl" (Slovene), "sv" (Swedish), "tr" (Turkish), "zh-rCN" (Chinese: China), "zh-rTW" (Chinese: Taiwan, Province of China) [MissingTranslation
]
  <string-array name="country_codes">
                ~~~~~~~~~~~~~~~~~~~~
F:\work\wosai\code.wosai\edu.k12\k12student\platforms\android\res\values\strings.xml:3: Error: "app_name" is not translated in "ar" (Arabic), "bg" (Bulgarian), "ca" (Catalan), "cs" (Czech), "da" (Danish), "de" (Germa
n), "el" (Greek), "es" (Spanish), "eu" (Basque), "fi" (Finnish), "fr" (French), "he" (Hebrew), "hi" (Hindi), "hu" (Hungarian), "id" (Indonesian), "it" (Italian), "iw" (Hebrew), "ja" (Japanese), "ko" (Korean), "nl" (D
utch), "pl" (Polish), "pt" (Portuguese), "ru" (Russian), "sk" (Slovak), "sl" (Slovene), "sv" (Swedish), "tr" (Turkish), "zh-rCN" (Chinese: China), "zh-rTW" (Chinese: Taiwan, Province of China) [MissingTranslation]
    <string name="app_name">赛学霸</string>                                                                                                                                                                             
            ~~~~~~~~~~~~~~~
F:\work\wosai\code.wosai\edu.k12\k12student\platforms\android\res\values\strings.xml:4: Error: "launcher_name" is not translated in "ar" (Arabic), "bg" (Bulgarian), "ca" (Catalan), "cs" (Czech), "da" (Danish), "de" (
German), "el" (Greek), "es" (Spanish), "eu" (Basque), "fi" (Finnish), "fr" (French), "he" (Hebrew), "hi" (Hindi), "hu" (Hungarian), "id" (Indonesian), "it" (Italian), "iw" (Hebrew), "ja" (Japanese), "ko" (Korean), "n
l" (Dutch), "pl" (Polish), "pt" (Portuguese), "ru" (Russian), "sk" (Slovak), "sl" (Slovene), "sv" (Swedish), "tr" (Turkish), "zh-rCN" (Chinese: China), "zh-rTW" (Chinese: Taiwan, Province of China) [MissingTranslatio
n]
    <string name="launcher_name">@string/app_name</string>
            ~~~~~~~~~~~~~~~~~~~~
F:\work\wosai\code.wosai\edu.k12\k12student\platforms\android\res\values\strings.xml:5: Error: "activity_name" is not translated in "ar" (Arabic), "bg" (Bulgarian), "ca" (Catalan), "cs" (Czech), "da" (Danish), "de" (
German), "el" (Greek), "es" (Spanish), "eu" (Basque), "fi" (Finnish), "fr" (French), "he" (Hebrew), "hi" (Hindi), "hu" (Hungarian), "id" (Indonesian), "it" (Italian), "iw" (Hebrew), "ja" (Japanese), "ko" (Korean), "n
l" (Dutch), "pl" (Polish), "pt" (Portuguese), "ru" (Russian), "sk" (Slovak), "sl" (Slovene), "sv" (Swedish), "tr" (Turkish), "zh-rCN" (Chinese: China), "zh-rTW" (Chinese: Taiwan, Province of China) [MissingTranslatio
n]
    <string name="activity_name">@string/launcher_name</string>
            ~~~~~~~~~~~~~~~~~~~~


   Explanation for issues of type "MissingTranslation":
   If an application has more than one locale, then all the strings declared
   in one language should also be translated in all other languages.


   If the string should not be translated, you can add the attribute
   translatable="false" on the <string> element, or you can define all your
   non-translatable strings in a resource file called donottranslate.xml. Or,
   you can ignore the issue with a tools:ignore="MissingTranslation"
   attribute.


   By default this detector allows regions of a language to just provide a
   subset of the strings and fall back to the standard language strings. You
   can require all regions to provide a full translation by setting the
   environment variable ANDROID_LINT_COMPLETE_REGIONS.


   You can tell lint (and other tools) which language is the default language
   in your res/values/ folder by specifying tools:locale="languageCode" for
   the root <resources> element in your resource file. (The tools prefix
   refers to the namespace declaration http://schemas.android.com/tools.)


F:\work\wosai\code.wosai\edu.k12\k12student\platforms\android\res\values-ar\strings.xml:64: Error: "menu_settings" is translated here but not found in default locale [ExtraTranslation]
  <string name="menu_settings">???????</string>
          ~~~~~~~~~~~~~~~~~~~~
    F:\work\wosai\code.wosai\edu.k12\k12student\platforms\android\res\values-bg\strings.xml:64: Also translated here
    F:\work\wosai\code.wosai\edu.k12\k12student\platforms\android\res\values-ca\strings.xml:64: Also translated here
    F:\work\wosai\code.wosai\edu.k12\k12student\platforms\android\res\values-cs\strings.xml:64: Also translated here
    F:\work\wosai\code.wosai\edu.k12\k12student\platforms\android\res\values-da\strings.xml:64: Also translated here
    F:\work\wosai\code.wosai\edu.k12\k12student\platforms\android\res\values-de\strings.xml:64: Also translated here
    F:\work\wosai\code.wosai\edu.k12\k12student\platforms\android\res\values-el\strings.xml:64: Also translated here
    F:\work\wosai\code.wosai\edu.k12\k12student\platforms\android\res\values-es\strings.xml:64: Also translated here
    F:\work\wosai\code.wosai\edu.k12\k12student\platforms\android\res\values-eu\strings.xml:64: Also translated here
    F:\work\wosai\code.wosai\edu.k12\k12student\platforms\android\res\values-fi\strings.xml:64: Also translated here
    F:\work\wosai\code.wosai\edu.k12\k12student\platforms\android\res\values-fr\strings.xml:64: Also translated here
    F:\work\wosai\code.wosai\edu.k12\k12student\platforms\android\res\values-he\strings.xml:64: Also translated here
    F:\work\wosai\code.wosai\edu.k12\k12student\platforms\android\res\values-hi\strings.xml:64: Also translated here
    F:\work\wosai\code.wosai\edu.k12\k12student\platforms\android\res\values-hu\strings.xml:64: Also translated here
    F:\work\wosai\code.wosai\edu.k12\k12student\platforms\android\res\values-id\strings.xml:64: Also translated here
    F:\work\wosai\code.wosai\edu.k12\k12student\platforms\android\res\values-it\strings.xml:64: Also translated here
    F:\work\wosai\code.wosai\edu.k12\k12student\platforms\android\res\values-iw\strings.xml:64: Also translated here
    F:\work\wosai\code.wosai\edu.k12\k12student\platforms\android\res\values-ja\strings.xml:64: Also translated here
    F:\work\wosai\code.wosai\edu.k12\k12student\platforms\android\res\values-ko\strings.xml:64: Also translated here
    F:\work\wosai\code.wosai\edu.k12\k12student\platforms\android\res\values-nl\strings.xml:64: Also translated here
    F:\work\wosai\code.wosai\edu.k12\k12student\platforms\android\res\values-pl\strings.xml:64: Also translated here
    F:\work\wosai\code.wosai\edu.k12\k12student\platforms\android\res\values-pt\strings.xml:64: Also translated here
    F:\work\wosai\code.wosai\edu.k12\k12student\platforms\android\res\values-ru\strings.xml:64: Also translated here
    F:\work\wosai\code.wosai\edu.k12\k12student\platforms\android\res\values-sk\strings.xml:64: Also translated here
    F:\work\wosai\code.wosai\edu.k12\k12student\platforms\android\res\values-sl\strings.xml:64: Also translated here
    F:\work\wosai\code.wosai\edu.k12\k12student\platforms\android\res\values-sv\strings.xml:64: Also translated here
    F:\work\wosai\code.wosai\edu.k12\k12student\platforms\android\res\values-tr\strings.xml:64: Also translated here
    F:\work\wosai\code.wosai\edu.k12\k12student\platforms\android\res\values-zh-rCN\strings.xml:64: Also translated here
    F:\work\wosai\code.wosai\edu.k12\k12student\platforms\android\res\values-zh-rTW\strings.xml:64: Also translated here


   Explanation for issues of type "ExtraTranslation":
   If a string appears in a specific language translation file, but there is
   no corresponding string in the default locale, then this string is probably
   unused. (It's technically possible that your application is only intended
   to run in a specific locale, but it's still a good idea to provide a
   fallback.).


   Note that these strings can lead to crashes if the string is looked up on
   any locale not providing a translation, so it's important to clean them
   up.


5 errors, 0 warnings
                                                                                                                                                                                                                       :
lintVitalRelease                                                                                                                                                                                                       F
AILED         
              
FAILURE: Build failed with an exception.
              
* What went wrong:
Execution failed for task ':lintVitalRelease'.
> Lint found fatal errors while assembling a release target.
              
To proceed, either fix the issues identified by lint, or modify your build script as follows:
...
android {
    lintOptions {
        checkReleaseBuilds false
        // Or, if you prefer, you can continue to check for errors in release builds,
        // but continue the build even when errors are found:
        abortOnError false
    }
}
...
              
* Try:        
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.
              
BUILD FAILED  
              
Total time: 22.092 secs
              
F:\work\wosai\code.wosai\edu.k12\k12student\platforms\android\cordova\node_modules\q\q.js:126
                    throw e;
                    ^
Error code 1 for command: cmd with args: /s /c "F:\work\wosai\code.wosai\edu.k12\k12student\platforms\android\gradlew cdvBuildRelease -b F:\work\wosai\code.wosai\edu.k12\k12student\platforms\android\build.gradle -Dor
g.gradle.daemon=true"
ERROR building one of the platforms: Error: cmd: Command failed with exit code 1
You may not have the required environment or OS to build this project
Error: cmd: Command failed with exit code 1
    at ChildProcess.whenDone (C:\Users\Administrator\AppData\Roaming\npm\node_modules\cordova\node_modules\cordova-lib\src\cordova\superspawn.js:139:23)
    at emitTwo (events.js:87:13)
    at ChildProcess.emit (events.js:172:7)
    at maybeClose (internal/child_process.js:817:16)
    at Process.ChildProcess._handle.onexit (internal/child_process.js:211:5)

已经提示了处理建议

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
* What went wrong:
Execution failed for task ':lintVitalRelease'.
> Lint found fatal errors while assembling a release target.
              
To proceed, either fix the issues identified by lint, or modify your build script as follows:
...
android {
    lintOptions {
        checkReleaseBuilds false
        // Or, if you prefer, you can continue to check for errors in release builds,
        // but continue the build even when errors are found:
        abortOnError false
    }
}
...

查看错误日志发现问题基本是 translation 错误

解决方法

在 platforms/android/build.gradle 文件的android {} 节点中增加

1
2
3
4
5
6
7
android {
  lintOptions{
          abortOnError false
          checkReleaseBuilds false

  }
}

如图:

more >>

展开全文 >>

ios免App Store审核安装几种途径

此文阅次

途径一 : 打包前,为用于打包的证书,关联调试设备

此方式打出的ipa包可免审核安装

添加调试设备: 开发者官网-Certificates-Devices-all

注意: 限制100台设备

证书关联设备

位置: 开发者官网-Certificates- Provisioning Profiles- [Development/Distribution]

  • 新建: 开发证书,常用于真机调试. Development- iOS App Development …选设备-download

  • 新建: 发布证书,常用于内部测试. Distribution - Ad Hoc…选设备-download

  • 更新: 选择目标证书-Edit…勾选新设备-download(会自动打开xcode且更新相关配置)

打包

更新配置 Builder Setting-code Signing-Provisioning Profile 选择正确的证书

  • 发布AppStore一般都选projectname-dis
  • 需要给内部员工测试选择projectname-dis-ad hoc

导出ipa

打包成功后自动弹出 Organizer 或 手动选择 window- Organizer
选择 export - 再依据情况选择不同的导出项

  • 上架App Store选: Save for iOS App Store D eployment

  • 发布设备内侧选: Save for Ad Hoc D eployment

  • 发布企业包选: Save for Enterprise D eployment

  • 导出设备开发包: Save for Developent D eployment

结果ipa文件会出现在桌面

发布包上架AppStore

使用 Application Loader

内测包,上传至第三方应用内侧托管平台

如: fir.im 平台会提供测试应用的地址及 二维码供内侧用户下载

途径二: 提交审核后,审核通过前. 使用itunes.apple审核APP中的TestFlight.

  • 内部测试:审核通过前可安装使用. ( 限25名用户)
  • 外部测试:签核后才可安装使用. (不限 用户)

途径三(推荐): 企业账号,使用企业证书打包

  • 优点: 不需要提前添加设备,不限制设备数量,配合第三方内侧托管平台可快速发布,安装
  • 特点: 企业应用,不可上架App Store,适合不公开应用使用. 其次是脱离AppStore管理,快速发布.

位置: 开发者官网-Certificates- Provisioning Profiles- [Development/Distribution]

  • 新建: 企业证书,用于企业发布. Development- iOS App Development …选设备-download

ios apple企业账号申请流程
http://my.oschina.net/u/1025290/blog/299040?fromerr=j6bC8HuY

iOS 企业证书发布app 流程
http://blog.csdn.net/justinjing0612/article/details/8758692

以无线方式安装企业内部应用-官方说明
http://help.apple.com/deployment/ios/#/apda0e3426d7

ios apple企业账号申请流程
http://my.oschina.net/u/1025290/blog/299040
http://bbs.9ria.com/thread-197242-1-1.html

http://www.cnblogs.com/xilinch/p/4037164.html

iOS 开发者中的公司账号与个人账号之间有什么区别？
https://www.zhihu.com/question/20308474
https://developer.apple.com/support/compare-memberships/

# 企业包,上传至第三方应用内侧托管平台

如: fir.im 平台会提供测试应用的地址及 二维码供内侧用户下载

途径四 (非商业): 越狱+第三方工具安装

more >>

展开全文 >>

ios证书结构

此文阅次

Provisioning Profiles 证书

Development 开发 -不可上app Store

  • iOS App Development 可添加测试设备 (免审核安装)-用于真机调试

Distribution 发布 - 可上app Store

  • App Store 不可添加 测试 设备
  • Ad Hoc 可添加 测试 设备(免审核安装) more >>

展开全文 >>

ios 编译/打包问题笔录

此文阅次

UUID找不到?

错误:

1
Code Sign error: No matching provisioning profile found: Your build settings specify a provisioning profile with the UUID “5789f696-49dc-4b81-977c-48f780c54273”, however, no such provisioning profile was found.

UUID “ 5789f696-49dc-4b81-977c-48f780c54273 ” 是什么?

UUID是”Provisioning Profile”对应的实际文件名,证明:

解决问题, 清理无效的UUID

1.打开路径cd /Users/*/Library/MobileDevice open Provisioning Profiles ,
2.删除” 5789f696-49dc-4b81-977c-48f780c54273.mobileprovision “文件.
3.重新到苹果开发者网站下载新的Provisionning Profiles文件, download 会自定更新xcode
4.再试报错的行为(打包),看此错误是否解决.

次级处理方式： （ 见：mac项目编译 UUID 找不到,解决办法.md ）
Your build settings specify a provisioning profile with the UUID, no provisioning profile was found - rbyyy(Create produce different)

  • 清理project.pbxproj文件中UUID：文件中配置“PROVISIONING_PROFILE”项清理

Command /usr/bin/codesign failed with exit code 1

报错原因：codesign 证书找不到
证书指：打包使用的Provisioning Profiles 文件 中所配置依赖的Certificates证书
找不到指：本机设备 （mac） 中找不到，正常在钥匙扣中。
注意事项： Certificates 证书存在开发（dev）与发布（dis）两种，具体查看PP 文件 中所配置。

1
2
3
4
5
6
7
8
9
10
11
12
13
CodeSign /Users/wosai/Library/Developer/Xcode/DerivedData/爱科学-fhrouhlgzqrnrqcorivoclqidoop/Build/Products/Debug-iphoneos/爱科学.app
    cd "/Users/wosai/Desktop/work/hybrid Dev/k12student/platforms/ios"
    export CODESIGN_ALLOCATE=/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/codesign_allocate
    export PATH="/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin:/Applications/Xcode.app/Contents/Developer/usr/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin"
 
Signing Identity:     "iPhone Developer: Xiang Liu (W66R7RU3TA)"
Provisioning Profile: "aikexue_dev"
                      (48442213-e40e-4b23-97d1-bb8b90b535b7)
 
    /usr/bin/codesign --force --sign 046D9F6D7C99A7C383E4FF8D76A80878BBFCB0BF --entitlements /Users/wosai/Library/Developer/Xcode/DerivedData/爱科学-fhrouhlgzqrnrqcorivoclqidoop/Build/Intermediates/爱科学.build/Debug-iphoneos/爱科学.build/爱科学.app.xcent --timestamp=none /Users/wosai/Library/Developer/Xcode/DerivedData/爱科学-fhrouhlgzqrnrqcorivoclqidoop/Build/Products/Debug-iphoneos/爱科学.app
 
046D9F6D7C99A7C383E4FF8D76A80878BBFCB0BF: no identity found
Command /usr/bin/codesign failed with exit code 1

IOS 开发 证书显示 此证书签发者无效 解决办法
http://blog.csdn.net/ddd998/article/details/50673592

1
2
3
4
5
6
7
8
9
钥匙串中的所有证书 都 提示此证书签发者无效
经查找得知系统证书WWDR在2016年2月14日失效，需要更新WWDR系统证书
下载证书地址https://developer.apple.com/certificationauthority/AppleWWDRCA.cer下载之后 双击安装
到这  还需要一步
1.在登录里面删除过期的证书WWDR
2.在系统里面 删除过期的证书WWDR 就可以完美的解决了。所有的证书 都可以使用了


找不到过期证书？点击显示-->显示已过期的证书。

使用的PP 文件 中配置的Certificates证书，没有下载到本机钥匙扣。

  • no identities from profile
1
2
3
No identities from profile
Build Settings|CodeSigning的Provisioning Profile中选择了本地安装的provisioning profile之后，Code Signing Identity中下拉提示No identities from profile “…”or No identities from keychain.
Xcode配置指定UDID的provisioning profile中的DeveloperCertificates在本地KeyChain中不存在（No identities are available）或不一致（KeyPair中的Private Key丢失），此时需去网站检查ProvisioningProfile中的App ID-Certificate-Device配置是否正确。如果是别人提供的共享账号（*.developerprofile）或共享证书(*.p12)，请确保导出了对应Key Pair中的Private Key。必要时也直接在Xcode中Fix issue予以解决（可能自动生成iOS Team ProvisioningProfile）。

参考
iOS Provisioning Profile(Certificate)与Code Signing详解 - pilqc2009的专栏 - 博客频道 - CSDN.NET
http://blog.csdn.net/pilqc2009/article/details/46698541

more >>

展开全文 >>

java8 初探——内建函数builtInFunction

此文阅次

BuiltInFunction

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
package java8.builtInFunction;


import java.time.Clock;
import java.time.DayOfWeek;
import java.time.Instant;
import java.time.LocalDate;
import java.time.LocalTime;
import java.time.Month;
import java.time.ZoneId;
import java.time.format.DateTimeFormatter;
import java.time.format.FormatStyle;
import java.time.temporal.ChronoUnit;
import java.util.ArrayList;
import java.util.Comparator;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.Objects;
import java.util.Optional;
import java.util.UUID;
import java.util.concurrent.TimeUnit;
import java.util.function.Consumer;
import java.util.function.Function;
import java.util.function.Predicate;
import java.util.function.Supplier;


public class BuiltInFunction {


public static void predicate() {
Predicate<String> predicate = (s) -> s.length() > 0;


System.out.println(predicate.test("foo"));// true
System.out.println(predicate.negate().test("foo"));// false


Predicate<Boolean> nonNull = Objects::nonNull;
Predicate<Boolean> isNull = Objects::isNull;


Predicate<String> isEmpty = String::isEmpty;
Predicate<String> isNotEmpty = isEmpty.negate();
}


public static void function() {
Function<String, Integer> toInteger = Integer::valueOf;
Function<String, String> backToString = toInteger.andThen(String::valueOf);


System.out.println(backToString.apply("123"));// "123"
}


public static void supplier() {
Supplier<Person> personSupplier = Person::new;
personSupplier.get(); // new Person
}


public static void consumer() {
Consumer<Person> greeter = (p) -> System.out.println("Hello, " + p.firstName);
greeter.accept(new Person("Luke", "Skywalker"));
}


public static void comparator() {
Comparator<Person> comparator = (p1, p2) -> p1.firstName.compareTo(p2.firstName);


Person p1 = new Person("John", "Doe");
Person p2 = new Person("Alice", "Wonderland");


comparator.compare(p1, p2); // > 0
comparator.reversed().compare(p1, p2); // < 0
}


public static void optional() {
Optional<String> optional = Optional.of("bam");


optional.isPresent(); // true
optional.get(); // "bam"
optional.orElse("fallback");// "bam"


optional.ifPresent((s) -> System.out.println(s.charAt(0)));// "b"
}


public static void stream() {
List<String> stringCollection = new ArrayList<String>();
stringCollection.add("ddd2");
stringCollection.add("aaa2");
stringCollection.add("bbb1");
stringCollection.add("aaa1");
stringCollection.add("bbb3");
stringCollection.add("ccc");
stringCollection.add("bbb2");
stringCollection.add("ddd1");


// stringCollection.stream().filter((String item) ->
// item.startsWith("a")).forEach(System.out::println);
stringCollection.stream().filter((s) -> s.startsWith("a")).forEach(System.out::println);


stringCollection.stream().sorted().filter((s) -> s.startsWith("a")).forEach(System.out::println);
System.out.println(stringCollection);


stringCollection.stream().map(String::toUpperCase).sorted((a, b) -> b.compareTo(a)).forEach(System.out::println);


boolean anyStartsWithA = stringCollection.stream().anyMatch((s) -> s.startsWith("a"));
System.out.println(anyStartsWithA); // true


boolean allStartsWithA = stringCollection.stream().allMatch((s) -> s.startsWith("a"));
System.out.println(allStartsWithA); // false


boolean noneStartsWithZ = stringCollection.stream().noneMatch((s) -> s.startsWith("z"));
System.out.println(noneStartsWithZ); // tr


long startsWithB = stringCollection.stream().filter((s) -> s.startsWith("b")).count();
System.out.println(startsWithB); // 3


Optional<String> reduced = stringCollection.stream().sorted().reduce((s1, s2) -> s1 + "#" + s2);
reduced.ifPresent(System.out::println); // "aaa1#aaa2#bbb1#bbb2#bbb3#ccc#ddd1#ddd2"
}


/**
* 并行流
*/
public static void parallelFlow() {
int max = 1000000;
List<String> values = new ArrayList<>(max);
for (int i = 0; i < max; i++) {
UUID uuid = UUID.randomUUID();
values.add(uuid.toString());
}


/** 串行排序 */
long t0 = System.nanoTime();


long count = values.stream().sorted().count();
System.out.println(count);


long t1 = System.nanoTime();


long millis = TimeUnit.NANOSECONDS.toMillis(t1 - t0);
System.out.println(String.format("sequential sort took: %d ms", millis));
// sequential sort took: 899 ms


/** 并行排序 */
t0 = System.nanoTime();


count = values.parallelStream().sorted().count();
System.out.println(count);


t1 = System.nanoTime();


millis = TimeUnit.NANOSECONDS.toMillis(t1 - t0);
System.out.println(String.format("parallel sort took: %d ms", millis));


// parallel sort took: 472 ms
}


public static void map() {
// map是不支持流操作的
Map<Integer, String> map = new HashMap<>();


for (int i = 0; i < 10; i++) {
map.putIfAbsent(i, "val" + i);
}


map.forEach((id, val) -> System.out.println(val));


map.computeIfPresent(3, (num, val) -> val + num);
map.get(3);// val33


map.computeIfPresent(9, (num, val) -> null);
map.containsKey(9);// false


map.computeIfAbsent(23, num -> "val" + num);
map.containsKey(23);// true


map.computeIfAbsent(3, num -> "bam");
map.get(3);// val33


map.remove(3, "val3");
map.get(3);// val33


map.remove(3, "val33");
map.get(3);// null


map.getOrDefault(42, "not found");// not found


map.merge(9, "val9", (value, newValue) -> value.concat(newValue));
map.get(9);// val9


map.merge(9, "concat", (value, newValue) -> value.concat(newValue));
map.get(9);// val9concat
}


public static void dateApi() {
Clock clock = Clock.systemDefaultZone();
long millis = clock.millis();


Instant instant = clock.instant();
Date legacyDate = Date.from(instant); // legacy java.util.Date


// 时区
System.out.println(ZoneId.getAvailableZoneIds());
// prints all available timezone ids


ZoneId zone1 = ZoneId.of("Europe/Berlin");
ZoneId zone2 = ZoneId.of("Brazil/East");
System.out.println(zone1.getRules());
System.out.println(zone2.getRules());


// ZoneRules[currentStandardOffset=+01:00]
// ZoneRules[currentStandardOffset=-03:00]


// localTime 比较
LocalTime now1 = LocalTime.now(zone1);
LocalTime now2 = LocalTime.now(zone2);


System.out.println(now1.isBefore(now2)); // false


long hoursBetween = ChronoUnit.HOURS.between(now1, now2);
long minutesBetween = ChronoUnit.MINUTES.between(now1, now2);


System.out.println(hoursBetween); // -3
System.out.println(minutesBetween); // -239


LocalTime late = LocalTime.of(23, 59, 59);
System.out.println(late); // 23:59:59


// 时间字符串进行解析
DateTimeFormatter germanFormatter = DateTimeFormatter.ofLocalizedTime(FormatStyle.SHORT).withLocale(Locale.GERMAN);


LocalTime leetTime = LocalTime.parse("13:37", germanFormatter);
System.out.println(leetTime); // 13:37


// LocalDate
LocalDate today = LocalDate.now();
LocalDate tomorrow = today.plus(1, ChronoUnit.DAYS);
LocalDate yesterday = tomorrow.minusDays(2);


LocalDate independenceDay = LocalDate.of(2014, Month.JULY, 4);
DayOfWeek dayOfWeek = independenceDay.getDayOfWeek();
System.out.println(dayOfWeek); // FRIDAY


// 解析字符串并形成LocalDate对象
germanFormatter = DateTimeFormatter.ofLocalizedDate(FormatStyle.MEDIUM).withLocale(Locale.GERMAN);


LocalDate xmas = LocalDate.parse("24.12.2014", germanFormatter);
System.out.println(xmas); // 2014-12-24
}


public static void main(String[] args) {
predicate();// 断言
function();// 功能函数
consumer();//
comparator();//
optional();
stream();
}
}


class Person {
String firstName;
String lastName;


Person() {
}


Person(String firstName, String lastName) {
this.firstName = firstName;
this.lastName = lastName;
}
}


/**
 * Java8 简明教程 - 推酷
 * 
 * @http://www.tuicool.com/articles/buuIjeB
 **/
more >>

展开全文 >>

java8 初探——Optional

此文阅次

MyOptional

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
package java8.optional;
import java.util.Optional;
public class MyOptional {
    public static void optional() {
        Optional<String> optional = Optional.of("bam");
        optional.isPresent(); // true
        optional.get(); // "bam"
        optional.orElse("fallback");// "bam"
        optional.ifPresent((s) -> System.out.println(s.charAt(0)));// "b"
    }
    public static void optionalMore() {
        String str = "aaa";
        Optional<String> optional_2 = Optional.of(str); // 如果str ==
                                                        // null，抛出错误NullPointerException
        Optional<String> optional = Optional.ofNullable(str); // 如果str ==
                                                                // null，返回一个空Optional<String>
        Optional.<String> empty(); // 返回一个空Optional<String>
        String s = optional.get(); // 获取被包装的值
        optional.ifPresent((value) -> System.out.println("hello " + value)); // 如果optional的value不是null，则执行函数表达式
        optional.orElse("elseValue"); // 如果optional的value为null，则返回"elseValue"
        optional.orElseGet(() -> "orElseGet"); // 如果optional的value不是null，则返回函数表达式的执行结果
        optional.orElseThrow(RuntimeException::new); // 如果optional的value不是null，则抛出错误
        optional.filter((value) -> value.length() == 5); // 过滤得到长度等于5的value
        optional.map((value) -> {
            System.out.println("map:" + value);
            return value;
        });
        optional.flatMap((value) -> {
            System.out.println("flatMap:" + value);
            return Optional.ofNullable(value);
        });
        // map 与 flatMap 区别
        Optional<String> os = Optional.of("bbb");
        os.map((value) -> Optional.of(value)); // 返回的类型是Optional<Optional<String>>
        os.flatMap((value) -> Optional.of(value)); // 返回的类型是Optional<String>
    }
    public static void main(String[] args) {
        optional();
        optionalMore();
    }
}
/**
* Optionals(可选项)
*
* @Optionals是没有函数的接口，取而代之的是防止 NullPointerException
 *                             异常。这是下一节的一个重要概念，所以让我们看看如何结合Optionals工作。
*
* @Optional is a simple container for a value which may be null or non-null.
 *           Think of a method which may return a non-null result but sometimes
 *           return nothing. Instead of returning null you return an Optional in
 *           Java 8.
*
* @Optional是一个简单的容器，这个值可能是空的或者非空的。考虑到一个方法可能会返回一个non-null的值， 也可能返回一个空值。
 *                                                           为了不直接返回null，我们在Java
 *                                                           8中就返回一个Optional。
*
*
* @http://www.tuicool.com/articles/RjqEJrm
**/
more >>

展开全文 >>

java8 初探——twoColons::function realize

此文阅次

twoColons::

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
package java8.twoColons;
class TwoColonsUtil {
    public static String getSomething(String a, String b) {
        return a + ";" + b;
    }
    public String doGet(String a, String b) {
        return a + ";" + b;
    }
    public static void main(String[] args) {
 
        // lambda 实现
        FuncI f0 = (String a,String b) -> a + ";" + b;
        System.out.println(f0.get("aaa", "bbb"));
 
        /**
         * @我的理解:依据函数接口`FuncI`的定义 ,进行函数实现的封装
         * @获取方法的实现: TwoColonsUtil.getSomething(String a,String b)
         * @等同于:(String a,String b) -> a + ";" + b
         * @再使用快捷调用:TwoColonsUtil::getSomething 完成响应
         */
        FuncI f = TwoColonsUtil::getSomething;
        System.out.println(f.get("aaa", "bbb"));
 
        // 证明`TwoColonsUtil::getSomething`对应对象
        System.out.println(((FuncI)TwoColonsUtil::getSomething).get("aaa", "bbb"));
 
        // 非静态
        FuncI f2 = new TwoColonsUtil()::doGet;
        System.out.println(f2.get("ccc", "ddd"));
        System.out.println(((FuncI)new TwoColonsUtil()::doGet).get("ccc", "ddd"));
    }
}
@FunctionalInterface
interface FuncI {
    public String get(String a, String b);
}

TwoColons New 构造实现

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
package java8.twoColons;
class TwoColonsNew {
    public String name;
    public TwoColonsNew(String name) {
        this.name = name;
        // System.out.println(this.name);
    }
    public static void main(String[] args) {
        TwoColonsInterface si = TwoColonsNew::new;
        TwoColonsNew twoC = si.build("loader");
        System.out.println(twoC.name);
    }
}
@FunctionalInterface
interface TwoColonsInterface {
    // 返回构造对象
    TwoColonsNew build(String name);
}
more >>

展开全文 >>

java8 初探——@FunctionalInterface

此文阅次

functionalInterface

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
package java8.functionalInterface;
public class Func {
    public static void main(String[] args) {
        FuncI func = (String first, String last) -> {
            return first + "." + last;
        };
        System.out.println(func.builder("f", "l"));
        /**
         * @我的理解:依据函数接口`FuncI`的定义
         * @指明定义(String first, String last)
         * @使用快捷实现: [-> first + "." + last],同时调用,响应
         * @像匿名函數(方法),最终的响应对象是FuncI(@FunctionalInterface)
         */
        func = (String first, String last) -> first + "." + last;
        System.out.println(func.builder("f", "l"));
 
        // 关系对应 FuncI <-> (String first, String last) -> first + "." + last | 对象的具体匿名实现
        System.out.println(((FuncI)(String first, String last) -> first + "." + last).builder("f", "l"));
    }
}
@FunctionalInterface
interface FuncI {
    String builder(String firstName, String lastName);
 
    /**
     * @错误提示
     * <pre>
     * Invalid '@FunctionalInterface' annotation; FuncI is not a functional interface
     * 无效的@FunctionalInterface注释;FuncI不是一个功能接口
     * </pre>
     */
    // String builder2(String firstName, String lastName);
}
more >>

展开全文 >>

java8 初探——interface default

此文阅次

interface default

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
package java8.interfaceDefault;
public class Formula {
    public static void main(String[] args) {
        FormulaI formula = new FormulaI() {
            @Override
            public double calculate(int a) {
                return sqrt(a * 100);
            }
        };
 
        // 自定义实现
        System.out.println(formula.calculate(100));// 100.0
        System.out.println(formula.sqrt(16));// 4.0
 
        // Lambda实现
        System.out.println(((FormulaI) (a) -> (a * 100)).calculate(4));// 400.0
    }
}
@FunctionalInterface
interface FormulaI {
 
    double calculate(int a);
    /**
     * java 8 为接口增加了默认函数实体,且不要求继承实现
     *
     * @param a
     * @return
     */
    default double sqrt(int a) {
        return Math.sqrt(a);
    }
}
more >>

展开全文 >>