jad 使用笔记

wangkai@rserver:~/桌面/dbo$ ./jad -h
Jad v1.5.8e. Copyright 2001 Pavel Kouznetsov (kpdus@yahoo.com).
Usage: jad [option(s)] <filename(s)>
Options: -a - generate JVM instructions as comments (annotate)
-af - output fully qualified names when annotating
-b - generate redundant braces (braces)
-clear - clear all prefixes, including the default ones
-d <dir> - directory for output files
-dead - try to decompile dead parts of code (if there are any)
-dis - disassembler only (disassembler)
-f - generate fully qualified names (fullnames)
-ff - output fields before methods (fieldsfirst)
-i - print default initializers for fields (definits)
-l<num> - split strings into pieces of max <num> chars (splitstr)
-lnc - output original line numbers as comments (lnc)
-lradix<num>- display long integers using the specified radix
-nl - split strings on newline characters (splitstr)
-noconv - don't convert Java identifiers into valid ones (noconv)
-nocast - don't generate auxiliary casts
-noclass - don't convert .class operators
-nocode - don't generate the source code for methods
-noctor - suppress the empty constructors
-nodos - turn off check for class files written in DOS mode
-nofd - don't disambiguate fields with the same names (nofldis)
-noinner - turn off the support of inner classes
-nolvt - ignore Local Variable Table entries (nolvt)
-nonlb - don't insert a newline before opening brace (nonlb)
-o - overwrite output files without confirmation
-p - send all output to STDOUT (for piping)
-pa <pfx>- prefix for all packages in generated source files
-pc <pfx>- prefix for classes with numerical names (default: _cls)
-pe <pfx>- prefix for unused exception names (default: _ex)
-pf <pfx>- prefix for fields with numerical names (default: _fld)
-pi<num> - pack imports into one line using .* (packimports)
-pl <pfx>- prefix for locals with numerical names (default: _lcl)
-pm <pfx>- prefix for methods with numerical names (default: _mth)
-pp <pfx>- prefix for method parms with numerical names (default:_prm)
-pv<num> - pack fields with the same types into one line (packfields)
-r - restore package directory structure
-radix<num>- display integers using the specified radix (8, 10, or 16)
-s <ext> - output file extension (default: .jad)
-safe - generate additional casts to disambiguate methods/fields
-space - output space between keyword (if, while, etc) and expression
-stat - show the total number of processed classes/methods/fields
-t<num> - use <num> spaces for indentation (default: 4)
-t - use tabs instead of spaces for indentation
-v - show method names while decompiling


1:反编译一个class文件
./jad -s java ./org/sdfasdf/dbo/asdfxception.class

2: 批处理
wangkai@rserver:/home/webapps/jira/atlassian-confluence/WEB-INF/wiki$ ~/桌面/dbo/jad -d wiki -r -s java classes/**/*.class

学习一下 -confluence
内容概要:本文详细介绍了“秒杀商城”微服务架构的设计与实战全过程,涵盖系统从需求分析、服务拆分、技术选型到核心功能开发、分布式事务处理、容器化部署及监控链路追踪的完整流程。重点解决了高并发场景下的超卖问题,采用Redis预减库存、消息队列削峰、数据库乐观锁等手段保障数据一致性,并通过Nacos实现服务注册发现与配置管理,利用Seata处理跨服务分布式事务,结合RabbitMQ实现异步下单,提升系统吞吐能力。同时,项目支持Docker Compose快速部署和Kubernetes生产级编排,集成Sleuth+Zipkin链路追踪与Prometheus+Grafana监控体系,构建可观测性强的微服务系统。; 适合人群:具备Java基础和Spring Boot开发经验,熟悉微服务基本概念的中高级研发人员,尤其是希望深入理解高并发系统设计、分布式事务、服务治理等核心技术的开发者;适合工作2-5年、有志于转型微服务或提升架构能力的工程师; 使用场景及目标:①学习如何基于Spring Cloud Alibaba构建完整的微服务项目;②掌握秒杀场景下高并发、超卖控制、异步化、削峰填谷等关键技术方案;③实践分布式事务(Seata)、服务熔断降级、链路追踪、统一配置中心等企业级中间件的应用;④完成从本地开发到容器化部署的全流程落地; 阅读建议:建议按照文档提供的七个阶段循序渐进地动手实践,重点关注秒杀流程设计、服务间通信机制、分布式事务实现和系统性能优化部分,结合代码调试与监控工具深入理解各组件协作原理,真正掌握高并发微服务系统的构建能力。
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