以编程方式修改Java源代码中的注释

Question

I am looking for a way to analyze the Java code and programmatically modify them,

For example, the code may be like this:

@FindBy(id = "login")    
WebElement btnLogin;

@FindBy(xpath = "//div/a")    
List<WebElement> aNodes;

and I'd hope to check every field that is annotated by @FindBy, and change the annotation @FindBy into @Synchronized.

that is:

@Synchronized
WebElement btnLogin;

@Synchronized
List<WebElement> aNodes;

Unlike the similar questions I found (they use javassist or ASM to modify the bytecode), these annotation will be removed at runtime, so I can only do it in source code level but not in the bytecode level.

So far, I have find qdox , but seems it can only analyze the code but cannot modify it.

And I tried to write regex myself to solve it, but it seems a too much huge project.

Any recommendations on this?

Answer 1

The regular expression for this should be very simple

Match any line starting with

"^@FindBy"

or, if you're worried about an odd (but valid) syntax (@FindBy(blah) protected void ..)

"^@FindBy(.*)"

That said, you can also use your favorite IDE to do a search and replace manually (Eclipse, IntelliJ, or even emacs should be able to do this across all files), since you seem to be doing this statically