JDT:获取Java类每个方法的注释

//step1:获取ICompilationUnit 

IWorkspaceRoot root = ResourcesPlugin.getWorkspace().getRoot();

IProject project = root.getProject("test");

try {

project.open(null /* IProgressMonitor */);

} catch (CoreException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

IJavaProject javaProject = JavaCore.create(project);

IType lwType = null;

try {

lwType = javaProject.findType("net.chenxs.Test");

} catch (JavaModelException e) {

e.printStackTrace();

}

//step2:提取JavaDoc

ICompilationUnit lwCompilationUnit = lwType.getCompilationUnit();

 try {

SourceType type = (SourceType) lwCompilationUnit.getAllTypes()[0];

IBuffer buffer = lwCompilationUnit.getBuffer();

IMethod[] methods = type.getMethods();

IBuffer buffer1 = lwCompilationUnit.getBuffer();

for(int i=0; i<methods.length;i++){

IMethod method =methods[i];

ISourceRange range = method.getJavadocRange();//获取JavaDoc的范围区间

if(range != null){

System.out.println(range.getOffset() + "  " + range.getLength());

System.out.println(buffer1.getText(range.getOffset(),range.getLength()));;

}

}

} catch (JavaModelException e) {

e.printStackTrace();

}

注：通过ast也是可以的；

ASTParser  astParser = ASTParser.newParser(AST.JLS3);

astParser.setKind(ASTParser.K_COMPILATION_UNIT);

astParser.setSource(lwCompilationUnit);

CompilationUnit unit = (CompilationUnit) astParser.createAST(null);

TypeDeclaration type =  (TypeDeclaration) unit.types().get(0);

MethodDeclaration[] methods = type.getMethods();

for(int i=0; i<methods.length;i++){

    MethodDeclaration method = methods[i];

   Javadoc doc = method.getJavadoc();

 if(doc != null){

System.out.println(doc);

      }

}