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 path

        IClasspathEntry[] 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SourceLibrary

        IClasspathEntry srcClasspathEntry = JavaCore.newSourceEntry(srcFolder.getFullPath());

        // 得到旧的build path

        IClasspathEntry[] 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IPackageFragmentRoot

        IPackageFragmentRoot 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) {

}

   }