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法律研究Java 9 中 Jdeps 和 Jdeprscan 工具的區別？
Jdeps工具可用於分析我們類的依賴關係。“jdeps -jdkinternals jararchive.jar”命令的執行會打印出所有使用 Java 內部 API 的類的列表。Jdeps 工具返回依賴項的詳細描述，而Jdeprscan是另一個有用的工具，特別是在與“-for-removal”標誌結合使用時。此工具向我們顯示了給定 jar 存檔中所有已棄用 API的使用情況，並且只能顯示 jdk 方法的已棄用使用情況，並且不能使用此工具檢查第三方 jar中的棄用情況。
Jdeps 工具
- "jdeps" 是一個類依賴關係分析工具，可用於包級和類級依賴關係。
- "jdeps class_file" 命令列印給定類檔案的包級依賴關係。
- "jdeps -verbose" 命令列印類級依賴關係。
- "jdeps jar_file" 命令列印給定 jar 檔案的包級依賴關係。
- "jdeps --inverse --require module_name" 命令列印給定 Java 模組的包級反向依賴關係。
在下面，我們可以使用“jdeps --help”命令檢視選項的完整列表。
C:\Users\user>jdeps --help Usage: jdeps <options> <path ...>] <path> can be a pathname to a .class file, a directory, a JAR file. Possible options include: -dotoutput <dir> --dot-output <dir> Destination directory for DOT file output -s -summary Print dependency summary only. -v -verbose Print all class level dependences Equivalent to -verbose:class -filter:none. -verbose:package Print package-level dependences excluding dependences within the same package by default -verbose:class Print class-level dependences excluding dependences within the same package by default -apionly --api-only Restrict analysis to APIs i.e. dependences from the signature of public and protected members of public classes including field type, method parameter types, returned type, checked exception types etc. -jdkinternals --jdk-internals Finds class-level dependences on JDK internal APIs. By default, it analyzes all classes on --class-path and input files unless -include option is specified. This option cannot be used with -p, -e and -s options. WARNING: JDK internal APIs are inaccessible. --check <module-name>[,<module-name>... Analyze the dependence of the specified modules It prints the module descriptor, the resulting module dependences after analysis and the graph after transition reduction. It also identifies any unused qualified exports. --generate-module-info <dir> Generate module-info.java under the specified directory. The specified JAR files will be analyzed. This option cannot be used with --dot-output or --class-path. Use --generate-open-module option for open modules. --generate-open-module <dir> Generate module-info.java for the specified JAR files under the specified directory as open modules. This option cannot be used with --dot-output or --class-path. --list-deps Lists the dependences and use of JDK internal APIs. --list-reduced-deps Same as --list-deps with not listing the implied reads edges from the module graph If module M1 depends on M2 and M3, M2 requires public on M3, then M1 reading M3 is implied and removed from the module graph. -cp <path> -classpath <path> --class-path <path> Specify where to find class files --module-path <module path> Specify module path --upgrade-module-path <module path> Specify upgrade module path --system <java-home> Specify an alternate system module path --add-modules <module-name>[,<module-name>...] Adds modules to the root set for analysis -m <module-name> --module <module-name> Specify the root module for analysis --multi-release <version> Specifies the version when processing multi-release jar files. should be integer >= 9 or base. Options to filter dependences: -p <pkg> -package <pkg> --package <pkg> Finds dependences matching the given package name (may be given multiple times). -e <regex> -regex <regex> --regex <regex> Finds dependences matching the given pattern. --require <module-name> Finds dependences matching the given module name (may be given multiple times). --package, --regex, --require are mutual exclusive. -f <regex> -filter <regex> Filter dependences matching the given pattern. If given multiple times, the last one will be used. -filter:package Filter dependences within the same package. This is the default. -filter:archive Filter dependences within the same archive. -filter:module Filter dependences within the same module. -filter:none No -filter:package and -filter:archive filtering. Filtering specified via the -filter option still applies. Options to filter classes to be analyzed: -include <regex> Restrict analysis to classes matching pattern This option filters the list of classes to be analyzed. It can be used together with -p and -e which apply pattern to the dependences -P -profile Show profile containing a package -R -recursive Recursively traverse all run-time dependences. The -R option implies -filter:none. If -p, -e, -f option is specified, only the matching dependences are analyzed. -I --inverse Analyzes the dependences per other given options and then find all artifacts that directly and indirectly depend on the matching nodes. This is equivalent to the inverse of compile-time view analysis and print dependency summary. This option must use with --require, --package or --regex option. --compile-time Compile-time view of transitive dependences i.e. compile-time view of -R option. Analyzes the dependences per other given options If a dependence is found from a directory, a JAR file or a module, all c*lasses in that containing archive are analyzed. -q - quiet Do not show missing dependences from --generate-module-info output. -version --version Version information
jdeprscan 工具
- "jdeprscan" 是一個 Java 已棄用 API 掃描程式工具，可用於掃描已棄用的 API 元素。
- "jdeprscan class_file" 命令掃描給定 Java 類檔案的已棄用 API。
- "jdeprscan jar_file" 命令掃描給定 jar 檔案的已棄用 API。
- "jdeprscan --release X" 命令掃描特定 JDK 版本的已棄用 API。
- "jdeprscan --list --release X" 命令列出特定 JDK 版本的所有已棄用 API。
在下面，我們可以使用“jdeprscan --help”命令檢視選項的完整列表。
C:\Users\User>jdeprscan --help
Usage: jdeprscan [options] {dir|jar|class} ...
options:
--class-path PATH
--for-removal
--full-version
-h --help
-l --list
--release 6|7|8|9
-v --verbose
--version
Scans each argument for usages of deprecated APIs. An argument may be a directory specifying the root of a package hierarchy,
a JAR file, a class file, or a class name. The class name must be specified using a fully qualified class name using the $ separator
character for nested classes, for example,
java.lang.Thread$State
The --class-path option provides a search path for resolution of dependent classes.
The --for-removal option limits scanning or listing to APIs that are
deprecated for removal. Cannot be used with a release value of 6, 7, or 8.
The --full-version option prints out the full version string of the tool.
The --help option prints out a full help message.
The --list (-l) option prints out the set of deprecated APIs. No scanning is done,
so no directory, jar, or class arguments should be provided.
The --release option specifies the Java SE release that provides the set of deprecated APIs for scanning.
The --verbose (-v) option enables additional message output during processing.
The --version option prints out the abbreviated version string of the tool.
更新於： 2020-04-30
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