首页 > 解决方案 > 正则表达式在常规 java 应用程序和 android 应用程序之间的处理方式不同吗?

问题描述

我刚刚尝试在我的一个 android 项目(android 9)中使用 picocli。有关 picocli 的更多信息,请参见此处。我之前在本地项目中尝试过 picocli(仅使用 main 方法,不使用 android)并且效果很好。

但是后来我修改了代码以使其在 android 应用程序中工作,并且在处理一些正则表达式时在 picocli 中出现异常,我进行了一些测试以弄清楚发生了什么。当我尝试运行此代码时:

String test = "test";
test.replaceAll("\\$\\{COMMAND-NAME}", "string replacement");
2020-02-06 10:31:46.409 3971-3971/? W/System.err: java.util.regex.PatternSyntaxException: Syntax error in regexp pattern near index 17
2020-02-06 10:31:46.409 3971-3971/? W/System.err: \$\{COMMAND-NAME}
2020-02-06 10:31:46.409 3971-3971/? W/System.err:                  ^
2020-02-06 10:31:46.410 3971-3971/? W/System.err:     at java.util.regex.Pattern.compileImpl(Native Method)
2020-02-06 10:31:46.410 3971-3971/? W/System.err:     at java.util.regex.Pattern.compile(Pattern.java:1344)
2020-02-06 10:31:46.411 3971-3971/? W/System.err:     at java.util.regex.Pattern.<init>(Pattern.java:1328)
2020-02-06 10:31:46.411 3971-3971/? W/System.err:     at java.util.regex.Pattern.compile(Pattern.java:950)
2020-02-06 10:31:46.411 3971-3971/? W/System.err:     at java.lang.String.replaceAll(String.java:2286)
2020-02-06 10:31:46.411 3971-3971/? W/System.err:     at com.irdeto.androidadmintool.MainActivity.onCreate(MainActivity.java:39)
2020-02-06 10:31:46.411 3971-3971/? W/System.err:     at android.app.Activity.performCreate(Activity.java:7136)
2020-02-06 10:31:46.411 3971-3971/? W/System.err:     at android.app.Activity.performCreate(Activity.java:7127)
2020-02-06 10:31:46.411 3971-3971/? W/System.err:     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1271)
2020-02-06 10:31:46.411 3971-3971/? W/System.err:     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2893)
2020-02-06 10:31:46.412 3971-3971/? W/System.err:     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3048)
2020-02-06 10:31:46.412 3971-3971/? W/System.err:     at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
2020-02-06 10:31:46.412 3971-3971/? W/System.err:     at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
2020-02-06 10:31:46.412 3971-3971/? W/System.err:     at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
2020-02-06 10:31:46.412 3971-3971/? W/System.err:     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1808)
2020-02-06 10:31:46.412 3971-3971/? W/System.err:     at android.os.Handler.dispatchMessage(Handler.java:106)
2020-02-06 10:31:46.413 3971-3971/? W/System.err:     at android.os.Looper.loop(Looper.java:193)
2020-02-06 10:31:46.413 3971-3971/? W/System.err:     at android.app.ActivityThread.main(ActivityThread.java:6669)
2020-02-06 10:31:46.413 3971-3971/? W/System.err:     at java.lang.reflect.Method.invoke(Native Method)
2020-02-06 10:31:46.413 3971-3971/? W/System.err:     at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
2020-02-06 10:31:46.413 3971-3971/? W/System.err:     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)

这里有什么问题?我错过了什么吗?

标签: javaregexandroid-9.0-pie

解决方案


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