jdt可以做语法树分析,并且支持visitor模式对代码进行分析。跟pmd的分析方式一样,我们只要实现 visitor接口即可实现一个插件。
@Service("requestMappingInfoService")
public class RequestMappingInfoServiceImpl implements RequestMappingInfoService {
int c = 0;
private static OkHttpClient httpClient = new OkHttpClient();
private static GitlabAPI gla = GitlabAPI.connect("https://git.xxx.com", "mytoken");
private static ASTParser parser = ASTParser.newParser(AST.JLS8); //设置Java语言规范版本
static {
parser.setKind(ASTParser.K_COMPILATION_UNIT);
parser.setCompilerOptions(null);
parser.setResolveBindings(true);
Map<String, String> compilerOptions = JavaCore.getOptions();
//设置Java语言版本
compilerOptions.put(JavaCore.COMPILER_COMPLIANCE, JavaCore.VERSION_1_8);
compilerOptions.put(JavaCore.COMPILER_CODEGEN_TARGET_PLATFORM, JavaCore.VERSION_1_8);
compilerOptions.put(JavaCore.COMPILER_SOURCE, JavaCore.VERSION_1_8);
//设置编译选项
parser.setCompilerOptions(compilerOptions);
}
private void jdtPrase(byte[] fileContent, String giturl) {
parser.setSource(new String(fileContent).toCharArray());
//下个断点可以看看cu的types成员就是整个语法树
CompilationUnit cu = (CompilationUnit) parser.createAST(null);
//RequestMappingVisitor是个ASTVisitor的实现类 ,相当于一个插件
RequestMappingVisitor requestMappingVisitor = new RequestMappingVisitor();
cu.accept(requestMappingVisitor); //利用这个插件visit所有的语法树节点
}
}