從Java中提取文本字符串

我正在使用第三方庫，它以String（非Exception對象）的形式返回異常信息。我想提取字符串堆棧跟蹤的某些部分以在GUI中顯示用戶。從Java中提取文本字符串

兩個例子：

com.sdf.configure.model.change.InvalidChangeException: transformed change validation failed 
    at com.sdf.configure.model.change.SimpleConfigChanger.performChange(SimpleConfigChanger.java:129) 
    at com.sdf.portal.service.QosPolicyServiceImpl.applyPolicySnapshot(QosPolicyServiceImpl.java:99) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 
    at java.lang.reflect.Method.invoke(Method.java:597) 
    at com.referentia.commons.distributed.remoting.jms.JmsServiceExporter$1$1.run(JmsServiceExporter.java:189) 
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441) 
    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) 
    at java.util.concurrent.FutureTask.run(FutureTask.java:138) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) 
    at java.lang.Thread.run(Thread.java:619) 
Caused by: com.sdf.configure.model.change.InvalidChangeException: can't add input service policy: policy has queueing 
    at com.sdf.configure.model.validate.RuleBasedValidator$RuleBasedChangeValidator.checkValidChange(RuleBasedValidator.java:5188) 
    at com.sdf.configure.model.validate.AbstractContextChangeValidator.checkValidChange(AbstractContextChangeValidator.java:304) 
    at com.sdf.configure.model.validate.AbstractContextChangeValidator.checkValidChange(AbstractContextChangeValidator.java:140) 
    at com.sdf.configure.model.validate.RuleBasedValidator.checkValidChange(RuleBasedValidator.java:1039) 
    at com.sdf.configure.model.change.SimpleConfigChanger.performChange(SimpleConfigChanger.java:126) 
    ... 12 more

我想提取文本： 不能添加輸入服務政策：政策已經排隊

com.sdf.configure.model.change.InvalidChangeException: transformed change validation failed 
    at com.sdf.configure.model.change.SimpleConfigChanger.performChange(SimpleConfigChanger.java:129) 
    at com.sdf.portal.service.QosPolicyServiceImpl.applyPolicySnapshot(QosPolicyServiceImpl.java:99) 
    at sun.reflect.GeneratedMethodAccessor139.invoke(Unknown Source) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 
    at java.lang.reflect.Method.invoke(Method.java:597) 
    at com.sdf.commons.distributed.remoting.jms.JmsServiceExporter$1$1.run(JmsServiceExporter.java:189) 
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441) 
    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) 
    at java.util.concurrent.FutureTask.run(FutureTask.java:138) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) 
    at java.lang.Thread.run(Thread.java:619) 
Caused by: com.sdf.configure.model.change.InvalidChangeException: compound change component validation failed 
    at com.sdf.configure.model.validate.AbstractContextChangeValidator.checkValidChange(AbstractContextChangeValidator.java:1309) 
    at com.sdf.configure.model.validate.AbstractContextChangeValidator.checkValidChange(AbstractContextChangeValidator.java:361) 
    at com.sdf.configure.model.validate.AbstractContextChangeValidator.checkValidChange(AbstractContextChangeValidator.java:140) 
    at com.sdf.configure.model.validate.RuleBasedValidator.checkValidChange(RuleBasedValidator.java:1039) 
    at com.sdf.configure.model.change.SimpleConfigChanger.performChange(SimpleConfigChanger.java:126) 
    ... 11 more 
Caused by: com.sdf.configure.model.change.InvalidChangeException: can't add input service policy: policy has shaping 
    at com.sdf.configure.model.validate.RuleBasedValidator$RuleBasedChangeValidator.checkValidChange(RuleBasedValidator.java:5180) 
    at com.sdf.configure.model.validate.AbstractContextChangeValidator.checkValidChange(AbstractContextChangeValidator.java:304) 
    at com.sdf.configure.model.validate.AbstractContextChangeValidator.checkValidChange(AbstractContextChangeValidator.java:1306) 
    ... 15 more

我想提取文本：

複合變更組件驗證失敗

不能添加輸入服務政策：政策已經成型

任何優雅的方式來做到這一點？找我要提取部分的唯一方法似乎是我想提取的作品總是在之前

產生的原因：com.sdf.configure.model.change.InvalidChangeException：

來源

2011-02-15 systemoutprintln

此正則表達式將處理這兩個指標之間的一切......

原正則表達式：^Caused\sby:\s\S+:(.+)$

爲Java String："^Caused\\sby:\\s\\S+:(.+)$"

你可以很容易地this online tool驗證此。

你需要包括多行選項

示例代碼片段：

String regex = "^Caused\\sby:\\s\\S+:(.+)$"; 
Pattern p = Pattern.compile(regex, Pattern.MULTILINE); 

Matcher m = p.matcher(exceptionString); 
while (m.find()) { 
    String outputThis = m.group(1); 
}

來源

2011-02-15 23:25:46 Bill

WOW ......有一天，我需要學習如何使用正則表達式..這就像一個冠軍。 – systemoutprintln

使用string.indexOf獲取無效更改異常的位置，然後使用「at com。」的stirng.index。獲得堆棧跟蹤的下一部分的指標，tehn抓住調整爲異常文本字符串的長度作爲補償

來源

2011-02-15 23:08:16 Zak

用途：

StringUtils.substringsBetween(searchMe, start, end);

像這樣：

String[] causes = StringUtils.substringsBetween(exceptionMessage, 
         "Caused by: com.sdf.configure.model.change.InvalidChangeException:", 
         "at com.sdf");

這會給你是一個數組由第二個和第三個參數分隔的文本。

這裏的 JavaDoc

來源

2011-02-15 23:30:43

從Java中提取文本字符串

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