我有一个包含多个模块的gradle项目,每个模块都是根据自己的.jar文件构建的 . 我想在自定义Java gradle插件中使用反射,以生成带注释的类/方法的报告 .
/build.gradle
apply plugin: com.my.plugins.MyPlugin
/buildSrc/build.gradle
repositories {
mavenCentral()
}
dependencies {
compile 'org.reflections:reflections:0.9.11'
compile 'javax.annotation:javax.annotation-api:1.3.2'
}
/buildSrc/src/main/java/com/my/plugins/MyPlugin.java
@NonNullApi
public class MyPlugin implements Plugin<Project> {
@Override
public void apply(Project project) {
MyTask myTask = project.getTasks().create("mytask", MyTask.class);
Task javaCompileTask = project.getTasks().getByName("compileJava");
myTask.dependsOn(javaCompileTask);
}
}
/buildSrc/src/main/java/com/my/plugins/MyTask.java
public class MyTask extends DefaultTask {
@TaskAction
public void perform() throws MalformedURLException, ClassNotFoundException {
List<URL> listOfURL = new ArrayList<>();
Set<File> runtimeFiles = getProject().getConfigurations().findByName("runtime").getFiles();
for (File file : runtimeFiles) {
// TODO: Exclude files from gradle cache folder
if (file.getPath().contains("build\\libs")) {
listOfURL.add(file.toURI().toURL());
}
}
URL[] urls = listOfURL.toArray(new URL[0]);
System.out.println("\nURLs:");
for (URL u : urls) {
System.out.println(" " + u.toString());
}
ClassLoader classLoader = new URLClassLoader(urls, null);
classLoader.loadClass("com.my.services.sample.MyClass");
System.out.println("\nClassLoader OK!\n");
Configuration config = new ConfigurationBuilder()
.setUrls(ClasspathHelper.forClassLoader(classLoader))
.filterInputsBy(new FilterBuilder().include(FilterBuilder.prefix("com.my.services")))
.addClassLoader(classLoader)
.setScanners(new SubTypesScanner(),
new TypeAnnotationsScanner(),
new MethodAnnotationsScanner());
Reflections reflections = new Reflections(config);
System.out.println("\nPermitAll Classes\n");
for (Class c : reflections.getTypesAnnotatedWith(PermitAll.class)) {
System.out.println(c.getName());
}
System.out.println("\nPermitAll Methods\n");
for (Method m : reflections.getMethodsAnnotatedWith(PermitAll.class)) {
System.out.println(m.getName());
}
}
}
当我运行 gradlew mytask 时,我在URL列表中看到build \ libs下所有.jar文件的列表 .
虽然classLoader可以成功加载(例如)MyClass,但新的Reflections()行会生成大量“无法获取名称类型”错误,例如:
无法从任何类加载器获取名称com.my.services.sample.MyClass的类型
然后,PermitAll类的列表生成正确,但PermitAll方法列表失败并出现异常,例如:
任务':mytask'的执行失败 . > org / dom4j / DocumentException
我已经使用以下作为指南,但我无法取得任何进一步的进展:
https://discuss.gradle.org/t/gradle-plugin-with-reflections/22690
1 回答
您应该使用以下内容来创建类加载器