maven源码调试之springbootmavenplugin修改源码测试
maven相关依赖
<dependency> <groupId>org.apache.maven</groupId>
<artifactId>maven-core</artifactId>
<version>3.5.4</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<version>1.4.2.RELEASE</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.maven.plugin-tools/maven-plugin-annotations -->
<dependency>
<groupId>org.apache.maven.plugin-tools</groupId>
<artifactId>maven-plugin-annotations</artifactId>
<version>3.5.2</version>
<scope>provided</scope>
</dependency>
重写类：方法org.springframework.boot.maven.RepackageMojo.repackage()，拿到原始maven 依赖的set对象。
/* * Copyright 2012-2016 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.boot.maven;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Properties;
import java.util.Set;
import java.util.concurrent.TimeUnit;
import java.util.jar.JarFile;
import org.apache.maven.artifact.Artifact;
import org.apache.maven.model.Dependency;
import org.apache.maven.plugin.MojoExecutionException;
import org.apache.maven.plugin.MojoFailureException;
import org.apache.maven.plugin.logging.Log;
import org.apache.maven.plugins.annotations.Component;
import org.apache.maven.plugins.annotations.LifecyclePhase;
import org.apache.maven.plugins.annotations.Mojo;
import org.apache.maven.plugins.annotations.Parameter;
import org.apache.maven.plugins.annotations.ResolutionScope;
import org.apache.maven.project.MavenProject;
import org.apache.maven.project.MavenProjectHelper;
import org.apache.maven.shared.artifact.filter.collection.ArtifactsFilter;
import org.apache.maven.shared.artifact.filter.collection.ScopeFilter;
import org.springframework.boot.loader.tools.DefaultLaunchScript;
import org.springframework.boot.loader.tools.LaunchScript;
import org.springframework.boot.loader.tools.Layout;
import org.springframework.boot.loader.tools.Layouts;
import org.springframework.boot.loader.tools.Libraries;
import org.springframework.boot.loader.tools.Repackager;
/**
* Repackages existing JAR and WAR archives so that they can be executed from the command
* line using {@literal java -jar}. With <code>layout=NONE</code> can also be used simply
* to package a JAR with nested dependencies (and no main class, so not executable).
*
* @author Phillip Webb
* @author Dave Syer
* @author Stephane Nicoll
*/
@Mojo(name = "repackage", defaultPhase = LifecyclePhase.PACKAGE, requiresProject = true, threadSafe = true, requiresDependencyResolution = ResolutionScope.COMPILE_PLUS_RUNTIME, requiresDependencyCollection = ResolutionScope.COMPILE_PLUS_RUNTIME)
public class RepackageMojo extends AbstractDependencyFilterMojo {
private static final long FIND_WARNING_TIMEOUT = TimeUnit.SECONDS.toMillis(10);
/**
* The Maven project.
* @since 1.0
*/
@Parameter(defaultValue = "${project}", readonly = true, required = true)
private MavenProject project;
/**
* Maven project helper utils.
* @since 1.0
*/
@Component
private MavenProjectHelper projectHelper;
/**
* Directory containing the generated archive.
* @since 1.0
*/
@Parameter(defaultValue = "${project.build.directory}", required = true)
private File outputDirectory;
/**
* Name of the generated archive.
* @since 1.0
*/
@Parameter(defaultValue = "${project.build.finalName}", required = true)
private String finalName;
/**
* Skip the execution.
* @since 1.2
*/
@Parameter(property = "skip", defaultValue = "false")
private boolean skip;
/**
* Classifier to add to the artifact generated. If given, the artifact will be
* attached with that classifier and the main artifact will be deployed as the main
* artifact. If this is not given (default), it will replace the main artifact and
* only the repackaged artifact will be deployed. Attaching the artifact allows to
* deploy it alongside to the original one, see <a href=
* "http://maven.apache.org/plugins/maven-deploy-plugin/examples/deploying-with-classifiers.html"
* > the maven documentation for more details</a>.
* @since 1.0
*/
@Parameter
private String classifier;
/**
* Attach the repackaged archive to be installed and deployed.
* @since 1.4
*/
@Parameter(defaultValue = "true")
private boolean attach = true;
/**
* The name of the main class. If not specified the first compiled class found that
* contains a "main" method will be used.
* @since 1.0
*/
@Parameter
private String mainClass;
/**
* The type of archive (which corresponds to how the dependencies are laid out inside
* it). Possible values are JAR, WAR, ZIP, DIR, NONE. Defaults to a guess based on the
* archive type.
* @since 1.0
*/
@Parameter
private LayoutType layout;
/**
* A list of the libraries that must be unpacked from fat jars in order to run.
* Specify each library as a <code><dependency></code> with a
* <code><groupId></code> and a <code><artifactId></code> and they will be
* unpacked at runtime.
* @since 1.1
*/
@Parameter
private List<Dependency> requiresUnpack;
/**
* Make a fully executable jar for *nix machines by prepending a launch script to the
* jar.
* @since 1.3
*/
@Parameter(defaultValue = "false")
private boolean executable;
/**
* The embedded launch script to prepend to the front of the jar if it is fully
* executable. If not specified the "Spring Boot" default script will be used.
* @since 1.3
*/
@Parameter
private File embeddedLaunchScript;
/**
* Properties that should be expanded in the embedded launch script.
* @since 1.3
*/
@Parameter
private Properties embeddedLaunchScriptProperties;
/**
* Exclude Spring Boot devtools.
* @since 1.3
*/
@Parameter(defaultValue = "false")
private boolean excludeDevtools;
/**
* Include system scoped dependencies.
* @since 1.4
*/
@Parameter(defaultValue = "false")
public boolean includeSystemScope;
@Override
public void execute() throws MojoExecutionException, MojoFailureException {
if (this.project.getPackaging().equals("pom")) {
getLog().debug("repackage goal could not be applied to pom project.");
return;
}
if (this.skip) {
getLog().debug("skipping repackaging as per configuration.");
return;
}
repackage();
}
private void repackage() throws MojoExecutionException {
File source = this.project.getArtifact().getFile();
File target = getTargetFile();
Repackager repackager = getRepackager(source);
/* Set<Artifact> artifacts = filterDependencies(this.project.getArtifacts(),
getFilters(getAdditionalFilters()));*/
Set<Artifact> artifacts = this.project.getArtifacts();
System.out.println("哈哈》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》"+artifacts.getClass().getName());
artifacts.forEach(s -> System.out.println("=="+s.getFile().getName()));
Libraries libraries = new ArtifactsLibraries(artifacts, this.requiresUnpack,
getLog());
try {
LaunchScript launchScript = getLaunchScript();
repackager.repackage(target, libraries, launchScript);
}
catch (IOException ex) {
throw new MojoExecutionException(ex.getMessage(), ex);
}
updateArtifact(source, target, repackager.getBackupFile());
}
private File getTargetFile() {
String classifier = (this.classifier == null ? "" : this.classifier.trim());
if (classifier.length() > 0 && !classifier.startsWith("-")) {
classifier = "-" + classifier;
}
if (!this.outputDirectory.exists()) {
this.outputDirectory.mkdirs();
}
return new File(this.outputDirectory, this.finalName + classifier + "."
+ this.project.getArtifact().getArtifactHandler().getExtension());
}
private Repackager getRepackager(File source) {
Repackager repackager = new LoggingRepackager(source, getLog());
repackager.setMainClass(this.mainClass);
if (this.layout != null) {
getLog().info("Layout: " + this.layout);
repackager.setLayout(this.layout.layout());
}
return repackager;
}
private ArtifactsFilter[] getAdditionalFilters() {
List<ArtifactsFilter> filters = new ArrayList<ArtifactsFilter>();
if (this.excludeDevtools) {
Exclude exclude = new Exclude();
exclude.setGroupId("org.springframework.boot");
exclude.setArtifactId("spring-boot-devtools");
ExcludeFilter filter = new ExcludeFilter(exclude);
filters.add(filter);
}
if (!this.includeSystemScope) {
filters.add(new ScopeFilter(null, Artifact.SCOPE_SYSTEM));
}
return filters.toArray(new ArtifactsFilter[filters.size()]);
}
private LaunchScript getLaunchScript() throws IOException {
if (this.executable || this.embeddedLaunchScript != null) {
return new DefaultLaunchScript(this.embeddedLaunchScript,
buildLaunchScriptProperties());
}
return null;
}
private Properties buildLaunchScriptProperties() {
Properties properties = new Properties();
if (this.embeddedLaunchScriptProperties != null) {
properties.putAll(this.embeddedLaunchScriptProperties);
}
putIfMissing(properties, "initInfoProvides", this.project.getArtifactId());
putIfMissing(properties, "initInfoShortDescription", this.project.getName(),
this.project.getArtifactId());
putIfMissing(properties, "initInfoDescription",
removeLineBreaks(this.project.getDescription()), this.project.getName(),
this.project.getArtifactId());
return properties;
}
private String removeLineBreaks(String description) {
return (description == null ? null : description.replaceAll("\s+", " "));
}
private void putIfMissing(Properties properties, String key,
String... valueCandidates) {
if (!properties.containsKey(key)) {
for (String candidate : valueCandidates) {
if (candidate != null && candidate.length() > 0) {
properties.put(key, candidate);
return;
}
}
}
}
private void updateArtifact(File source, File repackaged, File original) {
if (this.attach) {
attachArtifact(source, repackaged);
}
else if (source.equals(repackaged)) {
this.project.getArtifact().setFile(original);
getLog().info("Updating main artifact " + source + " to " + original);
}
}
private void attachArtifact(File source, File repackaged) {
if (this.classifier != null) {
getLog().info("Attaching archive: " + repackaged + ", with classifier: "
+ this.classifier);
this.projectHelper.attachArtifact(this.project, this.project.getPackaging(),
this.classifier, repackaged);
}
else if (!source.equals(repackaged)) {
this.project.getArtifact().setFile(repackaged);
getLog().info("Replacing main artifact " + source + " to " + repackaged);
}
}
/**
* Archive layout types.
*/
public enum LayoutType {
/**
* Jar Layout.
*/
JAR(new Layouts.Jar()),
/**
* War Layout.
*/
WAR(new Layouts.War()),
/**
* Zip Layout.
*/
ZIP(new Layouts.Expanded()),
/**
* Dir Layout.
*/
DIR(new Layouts.Expanded()),
/**
* Module Layout.
*/
MODULE(new Layouts.Module()),
/**
* No Layout.
*/
NONE(new Layouts.None());
private final Layout layout;
public Layout layout() {
return this.layout;
}
LayoutType(Layout layout) {
this.layout = layout;
}
}
private static class LoggingRepackager extends Repackager {
private final Log log;
LoggingRepackager(File source, Log log) {
super(source);
this.log = log;
}
@Override
protected String findMainMethod(JarFile source) throws IOException {
long startTime = System.currentTimeMillis();
try {
return super.findMainMethod(source);
}
finally {
long duration = System.currentTimeMillis() - startTime;
if (duration > FIND_WARNING_TIMEOUT) {
this.log.warn("Searching for the main-class is taking some time, "
+ "consider using the mainClass configuration "
+ "parameter");
}
}
}
}
}
替换class文件
打包测试：
按照maven pom依赖的顺序打印的。注意pom的顺序是：先加载当前的pom，在加载父pom的依赖，以此类推
以上是 maven源码调试之springbootmavenplugin修改源码测试 的全部内容， 来源链接： utcz.com/z/518895.html
