Eclipse插件开发中创建java工程的代码

package com.wisoft.magicube.codegenerator.popup.actions;import java.util.ArrayList;import java.util.Arrays;import java.util.List;import org.eclipse.core.resources.ICommand;import org.eclipse.core.resources.IFolder;import org.eclipse.core.resources.IProject;import org.eclipse.core.resources.IProjectDescription;import org.eclipse.core.resources.IResource;import org.eclipse.core.resources.IWorkspace;import org.eclipse.core.resources.IWorkspaceRoot;import org.eclipse.core.resources.ResourcesPlugin;import org.eclipse.core.runtime.CoreException;import org.eclipse.core.runtime.IPath;import org.eclipse.core.runtime.NullProgressMonitor;import org.eclipse.core.runtime.Path;import org.eclipse.core.runtime.SubProgressMonitor;import org.eclipse.jdt.core.IClasspathEntry;import org.eclipse.jdt.core.IJavaProject;import org.eclipse.jdt.core.IPackageFragment;import org.eclipse.jdt.core.IPackageFragmentRoot;import org.eclipse.jdt.core.JavaCore;import org.eclipse.jdt.core.JavaModelException;import org.eclipse.jdt.ui.PreferenceConstants;import org.eclipse.jface.action.IAction;import org.eclipse.jface.viewers.ISelection;import org.eclipse.ui.IObjectActionDelegate;import org.eclipse.ui.IWorkbenchPart;public class NewJavaProjectAction implements IObjectActionDelegate {public void run(IAction action) {// 获取工作区IWorkspaceRoot root = ResourcesPlugin.getWorkspace().getRoot();// ///////////////////////////////////创建新项目///////////////////////////final IProject project = root.getProject("xyz");// 设置工程的位置// 为项目指定存放路径,默认放在当前工作区IPath projectPath = new Path("g:/myplugIn");IWorkspace workspace = root.getWorkspace();final IProjectDescription description = workspace.newProjectDescription(project.getName());description.setLocation(projectPath);// 设置工程标记,即为java工程String[] javaNature = description.getNatureIds();String[] newJavaNature = new String[javaNature.length + 1];System.arraycopy(javaNature, 0, newJavaNature, 0, javaNature.length);newJavaNature[javaNature.length] = "org.eclipse.jdt.core.javanature"; // 这个标记证明本工程是Java工程description.setNatureIds(newJavaNature);// /////////////////////////////try {NullProgressMonitor monitor = new NullProgressMonitor();project.create(description, monitor);project.open(IResource.BACKGROUND_REFRESH, new SubProgressMonitor(monitor, 1000));} catch (CoreException e) {e.printStackTrace();}// 下面代码只在新建向导的情况下才可用/* * //创建新项目,WorkspaceModifyOperation位于org.eclipse.ui.ide中 * WorkspaceModifyOperation workspaceModifyOperation = new * WorkspaceModifyOperation() { *  * @Override protected void execute(IProgressMonitor monitor) throws * CoreException, InvocationTargetException, InterruptedException { try * { monitor.beginTask("", ); project.create(description, monitor); *  * if(monitor.isCanceled()){ throw new OperationCanceledException(); } *  * project.open(IResource.BACKGROUND_REFRESH, new * SubProgressMonitor(monitor, )); } catch (Exception e) { * e.printStackTrace(); } finally{ monitor.done(); } } }; * //接下来调用IWizard的getContainer().run()方法. */// 转化成java工程IJavaProject javaProject = JavaCore.create(project);// //////////////////////////////////添加JRE库////////////////////////////try {// 获取默认的JRE库IClasspathEntry[] jreLibrary = PreferenceConstants.getDefaultJRELibrary();// 获取原来的build pathIClasspathEntry[] oldClasspathEntries = javaProject.getRawClasspath();List list = new ArrayList();list.addAll(Arrays.asList(jreLibrary));list.addAll(Arrays.asList(oldClasspathEntries));javaProject.setRawClasspath(list.toArray(new IClasspathEntry[list.size()]), null);} catch (JavaModelException e) {e.printStackTrace();}// //////////////////////////////////创建输出路径/////////////////////////////IFolder binFolder = javaProject.getProject().getFolder("bin");try {binFolder.create(true, true, null);javaProject.setOutputLocation(binFolder.getFullPath(), null);} catch (CoreException e) {e.printStackTrace();}// /////////////////////////设置Java生成器///////////////////////try {IProjectDescription description2 = javaProject.getProject().getDescription();ICommand command = description2.newCommand();command.setBuilderName("org.eclipse.jdt.core.javabuilder");description2.setBuildSpec(new ICommand[] { command });description2.setNatureIds(new String[] { "org.eclipse.jdt.core.javanature" });javaProject.getProject().setDescription(description2, null);} catch (CoreException e) {e.printStackTrace();}// /////////////////////////////创建源代码文件夹//////////////////////////// ///////////源文件夹和文件夹相似,只是使用PackageFragmentRoot进行了封装////////IFolder srcFolder = javaProject.getProject().getFolder("src");try {srcFolder.create(true, true, null);// this.createFolder(srcFolder);// 创建SourceLibraryIClasspathEntry srcClasspathEntry = JavaCore.newSourceEntry(srcFolder.getFullPath());// 得到旧的build pathIClasspathEntry[] oldClasspathEntries = javaProject.readRawClasspath();// 添加新的List list = new ArrayList();list.addAll(Arrays.asList(oldClasspathEntries));list.add(srcClasspathEntry);// 原来存在一个与工程名相同的源文件夹,必须先删除IClasspathEntry temp = JavaCore.newSourceEntry(new Path("/xyz"));if (list.contains(temp)) {list.remove(temp);}System.out.println(list.size());javaProject.setRawClasspath(list.toArray(new IClasspathEntry[list.size()]), null);} catch (CoreException e) {e.printStackTrace();}// ///////////////////////////////创建包//////////////////////////// IPackageFragmentRoot packageFragmentRoot = javaProject.getPackageFragmentRoot(javaProject.getResource());//此处得到的src目录只读try {// 先找指定的源文件夹所在的IPackageFragmentRootIPackageFragmentRoot packageFragmentRoot = javaProject.findPackageFragmentRoot(new Path("/xyz/src"));// 根据IPackageFragmentRoot创建IPackageFragment,IPackageFragment就是包了IPackageFragment packageFragment = packageFragmentRoot.createPackageFragment("com.aptech.plugin", true, null);// //////////////////////////////////创建Java文件////////////////////////String javaCode = "package com.aptech.plugin;public class HelloWorld{public static void main(String[] args){System.out.println(/"中华人民共和国/");}}";packageFragment.createCompilationUnit("HelloWorld.java", javaCode, true, new NullProgressMonitor());} catch (JavaModelException e) {e.printStackTrace();} catch (Exception e) {e.printStackTrace();}}public void setActivePart(IAction action, IWorkbenchPart targetPart) {}public void selectionChanged(IAction action, ISelection selection) {}}

本文是使用 B3log Solo 从 Noday 进行同步发布的

原文地址：http://www.noday.net/articles/2011/03/23/1300857696824.html