Regex in java and ignoring white spaces

I want to write a regex to match on a string and ignore white spaces. For example, a search for 'foobar' would match on 'foo bar'. You can strip the spaces in both the pattern and search strings and use indexOf() if that's acceptable (might be a problem if you don't have enough memory to do so). I don't think a regex would be a good idea, but you could basically m

正则表达式在Java中,并忽略空白

我想写一个正则表达式来匹配一个字符串并忽略空格。 例如,搜索'foobar'会匹配'foo bar'。 你可以去掉模式和搜索字符串中的空格,如果可以接受的话,可以使用indexOf() (如果你没有足够的内存,可能会出现问题)。 我不认为一个正则表达式会是一个好主意,但你基本上可以创建一个模式: /fs*os*os*bs*as*r/ 每个角色之间基本上都有可选的空格。

regex just only match first substring

I have a string like this BALANCE:"5048543747",BALDEFOVD:"5119341413",ACCTNO:"0001000918", I've using REGEX (.*?), Result i've received just the first substring is BALANCE:"5048543747" in fact, the result which i want get is the array include { BALANCE:"5048543747" BALDEFOVD:"5119341413" ACCTNO:"000100091

正则表达式只匹配第一个子字符串

我有这样的字符串 BALANCE: “5048543747”,BALDEFOVD: “5119341413”,ACCTNO: “0001000918”, 我使用REGEX (。*?), 结果我收到了第一个子字符串 BALANCE: “5048543747” 实际上,我想得到的结果是数组包含 { BALANCE: “5048543747” BALDEFOVD: “5119341413” ACCTNO: “0001000918” } 谁能帮我。 非常感谢。 编辑 我使用的代码 Pattern pattern = Pattern.compile(“(。*?),”); M

Java regex possesive quantifiers

Given this regex: x[^x]*+x and this input string for matching: xbbbx The result is the matched text xbbbx starting at index 0 and ending at index 5. But, by only changing the last letter x to Z in both the regex and the string, we get this regex: x[^x]*+Z and this input string: xbbbZ and the result is: no match found. Why would a change in a single letter produce this change in behavi

Java正则表达式拥有量词

鉴于这个正则表达式: x[^x]*+x 和这个匹配的输入字符串: xbbbx 结果是匹配文本xbbbx从索引0开始到索引5结束。 但是,只需将正则表达式和字符串中的最后一个字母x更改为Z ,就可以得到这个正则表达式: x[^x]*+Z 和这个输入字符串: xbbbZ 结果是:未找到匹配项。 为什么单个字母的改变会产生这种行为变化? 你之所以使用“占有”量词来尽可能匹配符号。 因此,在这种情况下,使用xbbbZ ,正则表达式x[^x]*+匹配

length matches in Java Regex

My code : Pattern pattern = Pattern.compile("a?"); Matcher matcher = pattern.matcher("ababa"); while(matcher.find()){ System.out.println(matcher.start()+"["+matcher.group()+"]"+matcher.end()); } Output : 0[a]1 1[]1 2[a]3 3[]3 4[a]5 5[]5 What I know : "a?" stands for zero or one occurrence of the character 'a'. Java API says : matcher.start() returns the start index

长度匹配在Java正则表达式

我的代码: Pattern pattern = Pattern.compile("a?"); Matcher matcher = pattern.matcher("ababa"); while(matcher.find()){ System.out.println(matcher.start()+"["+matcher.group()+"]"+matcher.end()); } 输出: 0[a]1 1[]1 2[a]3 3[]3 4[a]5 5[]5 我知道的 : “一个?” 代表字符'a'的零次或一次出现。 Java API说: matcher.start()返回前一次匹配的开始索引。 matcher.end()返回匹配的最后

Java Stringparsing with Regexp

I try to parse a String with a Regexp to get parameters out of it. As an example: String: "TestStringpart1 with second test part2" Result should be: String[] {"part1", "part2"} Regexp: "TestString(.*?) with second test (.*?)" My Testcode was: String regexp = "TestString(.*?) with second test (.*?)"; String res = "TestStringpart1 with second test part2"; Pattern pattern = Pattern.compile(re

使用Regexp Java Stringparsing

我尝试使用正则表达式解析字符串以从中取出参数。 举个例子: String: "TestStringpart1 with second test part2" Result should be: String[] {"part1", "part2"} Regexp: "TestString(.*?) with second test (.*?)" 我的测试代码是: String regexp = "TestString(.*?) with second test (.*?)"; String res = "TestStringpart1 with second test part2"; Pattern pattern = Pattern.compile(regexp); Matcher matcher =

Regex: possessive quantifier for the star repetition operator, i.e. \d**

From the GLib Reference Manual, section "Regular expression syntax", subsection "Atomic grouping and possessive quantifiers": Consider the pattern d+foo when applied to the string 123456bar : after matching all 6 digits and then failing to match "foo", the normal action of the matcher is to try again with only 5 digits matching the d+ item, and then with 4, and so

正则表达式:星形重复算子的所有格量词,即\ d **

从GLib参考手册的“正则表达式语法”一节中的“原子分组和占有量词”部分: 考虑到应用于字符串123456bar的模式d+foo :在匹配所有6个数字后匹配“foo”失败后,匹配器的正常操作是再次尝试,只有5个数字匹配 d +项目,然后与4,等等,然后最终失败。 如果我们在前面的例子中使用(?>d+)foo (称为原子分组),则匹配器会在第一次无法匹配“foo”时立即放弃。 当一个原子组的子模式只是一个重复项时,如上例所示,可以使用一个简

Regex handling zero

I have string with *(asterisk) symbols as an input. String is considered as invalid if it has two consecutive asterisks. But, there is an escape symbol (backslash). For example: "**" (invalid) "**" (valid) "case**" (invalid) "case**" (valid) "**" (valid) I'm on stuck on such regex's which produce incorrect result: /[^\]*

正则表达式处理零

我有*(星号)符号作为输入的字符串。 如果字符串有两个连续的星号,则认为该字符串无效。 但是,有一个逃逸符号(反斜杠)。 例如: “**”(无效) “ **”(有效) “case **”(无效) “case **”(有效) “* *”(有效) 我一直在坚持这样的正则表达式产生不正确的结果: /[^\]**/ - java.util.regex.Pattern.compile("/[^\\]\*\*/") /([^\]*?**)|(**)/ - java.util.regex.Pattern.compile("/

Use of reluctant quantifier in regex

I have not used the reluctant quantifier in regex so far and I have a look at some questions of the site to apprehend its function and its use. Although that the similar question is quite descriptive, I still cannot understand how it is associated with the example in the java tutorial. I have understood that the reluctant quantifier matches as few as possible cases. So, how does it explain tha

在regex中使用不情愿的量词

到目前为止,我还没有在正则表达式中使用不情愿的量词,并且我看了一些关于该网站的问题,以了解它的功能和用法。 虽然类似的问题是相当具有描述性的,但我仍然无法理解它如何与java教程中的示例相关联。 我明白,不情愿的量词匹配尽可能少的情况。 那么,它是如何解释这个正则表达式的 ".*?foo" 在一个字符串上 "xfooxxxxxxfoo" 返回两个匹配: "xfoo"和"xxxxxxfoo" ? 而且,由于所有格量词的解

Benefits of using Native in Android

So I am beginning a semester long project and my group has decided to use Android as the target platform. This spiked my curiosity on a question in particular. I'd imagine under the large majority of the development cases Java and the virtual machine are the best paradigm to be developing under. My question is: What circumstances warrant using the native software development kit (C/C++) a

在Android中使用Native的好处

所以我开始了一个长达一个学期的项目,我的团队决定使用Android作为目标平台。 这特别刺激了我对一个问题的好奇心。 我想在大多数开发案例下,Java和虚拟机是最好的开发范例。 我的问题是:在什么情况下使用本地软件开发工具包(C / C ++)而不是Java? 根据Android文档,有几点需要注意: “你应该明白NDK不会让大多数应用程序受益,作为一名开发人员,你需要平衡其优点和缺点。值得注意的是,在Android上使用本机代码通

Create a JAR containing classes and resources from webapp using Gradle

I would like to create a jar from the contents of a WAR using gradle. The result I want is quite like what the archiveClasses = true setting of maven-war-plugin does. I understand that the gradle war plugin doesn't seem to do this (as per this stackoverflow question). Is there a way to do this manually? Say by manipulating the gradle jar task to collect the required parts from the WEB-I

使用Gradle从webapp创建一个包含类和资源的JAR

我想用Gradle从WAR的内容中创建一个jar。 我想要的结果非常像maven-war-plugin的archiveClasses = true设置。 我明白,gradle war插件似乎没有这样做(按照这个stackoverflow问题)。 有没有办法做到这一点手动? 通过操作gradle jar任务来从WEB-INF文件夹中收集所需的部分? 当我使用默认的jar任务时,它不会从WEB-INF目录获取资源。 我想这样做的原因是因为我模块化了一个WAR,并且模块依赖于WAR中的公共资源(在我