如何生成Java调用图 [英] How to generate a Java call graph

问题描述

我想分析和理解一个Java应用程序，我认为一个调用图将是非常有用的。如何生成一个？我正在使用Eclipse。

解决方案

获取callstack

1）如果您可以调试，应用程序只需放置一个断点（双击代码的左边距），并等待停止。如果您不在那里，请转到调试透视图，并打开调用堆栈视图/面板。它有调用堆栈：）

2）如果要在某处打印此堆栈跟踪，请使用例外：

 异常aux = new异常（我在这里）; //不要投掷！ 
 aux.printStackTrace（）; //如果你想要在stdout 
  

或

 异常aux = new异常（我在这里）; //不要投掷！ 
 StringWriter sw = new StringWriter（）; 
 aux.printStackTrace（new PrintWriter（sw））; 
 String result = sw.toString（）; //如果你想要一个字符串
  

获取方法参考

您可以通过右键单击引用，工作区来获取对方法的所有引用。它将搜索您当前打开的项目中的所有调用。非常非常有用。

剖析应用

profiler选项）

Eclipse TPTP提供概要分析：

I'd like to analyze and understand a certain Java app and I think a call graph would be very useful. How do I generate one? I'm using Eclipse.

解决方案

Getting callstack

1) If you can debug the application simply put a breakpoint (double click over the left margin of the code) and wait it to stop. Go to Debug Perspective if you're not there, and open the Call stack View/Panel. It has the call stack :)

2) If you want to print this stack trace somewhere use an Exception:

Exception aux = new Exception("I'm here"); // not for throwing!
aux.printStackTrace(); // if you want it in stdout

or

Exception aux = new Exception("I'm here"); // not for throwing!
StringWriter sw = new StringWriter();
aux.printStackTrace(new PrintWriter(sw));
String result = sw.toString(); // if you want it in a string

Obtaining method references

You can obtain all references to a method by right-clicking, References, Workspace. It will search all callings in your current open projects. Very very useful.

Profiling an app

(thanks those who had answered the profiler option)

Eclipse TPTP provides profiling:

http://www.eclipse.org/tptp/home/project_info/general/whatisTPTP.php

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