RCP Editor 常見錯誤處理方法

       最近學習RCP遇到不少問題，解決後覺得應該寫點東西與同道朋友們分享一下。筆者也是剛剛接觸RCP如文章中有錯誤歡迎執政。本文隻涉及報錯資訊及解決方法，希望高手能夠解釋深層次的原因。

"

​​org.eclipse.ui.PartInitException: Unable to open editor, unknown editor ID: package.class​​"、"

​​org.eclipse.ui.PartInitException: Editor initialization failed: package.class.  Site is incorrect.​​"及"

​​org.eclipse.core.runtime.AssertionFailedException: null argument:A part's title tool tip must be non-null​​"處理方法

1."org.eclipse.ui.PartInitException: Unable to open editor, unknown editor ID: package.class"處理方法

報錯原因：plugin.xml中<extension>标簽中沒有icon項

   <extension

         point="org.eclipse.ui.editors">

      <editor

            class="testrcp.testeditor"

            id="testrcp.testeditor"

            name="New EditorPart">

      </editor>

   </extension>

解決方法：plugin.xml中<extension>加入icon，該項可以為空。

   <extension

         point="org.eclipse.ui.editors">

      <editor

            class="testrcp.testeditor"

            icon=""

            id="testrcp.testeditor"

            name="New EditorPart">

      </editor>

   </extension>

2."org.eclipse.ui.PartInitException: Editor initialization failed: package.class.  Site is incorrect."處理方法

報錯原因：EditorPart類的init()未實作

package testrcp;

import org.eclipse.core.runtime.IProgressMonitor;

import org.eclipse.swt.SWT;

import org.eclipse.swt.widgets.Composite;

import org.eclipse.ui.IEditorInput;

import org.eclipse.ui.IEditorSite;

import org.eclipse.ui.PartInitException;

import org.eclipse.ui.part.EditorPart;

public class testeditor extends EditorPart {

    public static final String ID = "testrcp.testeditor"; //$NON-NLS-1$

    /**

     * Create contents of the editor part

     * @param parent

     */

    //@Override

    public void createPartControl(Composite parent) {

        Composite container = new Composite(parent, SWT.NONE);

        //

    }

    @Override

    public void setFocus() {

        // Set the focus

    }

    @Override

    public void doSave(IProgressMonitor monitor) {

        // Do the Save operation

    }

    @Override

    public void doSaveAs() {

        // Do the Save As operation

    }

    @Override

    public void init(IEditorSite site, IEditorInput input)

            throws PartInitException {

    }

    @Override

    public boolean isDirty() {

        return false;

    }

    @Override

    public boolean isSaveAsAllowed() {

        return false;

    }

}

解決方法：實作init()方法如下  

    public void init(IEditorSite site, IEditorInput input)

            throws PartInitException {

        System.out.println(input.toString());

        this.setInput(input);

        this.setSite(site);

    }

3."org.eclipse.core.runtime.AssertionFailedException: null argument:A part's title tool tip must be non-null"處理方法

報錯原因：EditorInput類的getToolTipText()傳回值為null  

package testrcp;

import org.eclipse.core.runtime.IPath;

import org.eclipse.jface.resource.ImageDescriptor;

import org.eclipse.ui.IPathEditorInput;

import org.eclipse.ui.IPersistableElement;

public class testEditorInput implements IPathEditorInput {

    public testEditorInput() {

        // TODO Auto-generated constructor stub

        super();

    }

    @Override

    public IPath getPath() {

        // TODO Auto-generated method stub

        return null;

    }

    @Override

    public boolean exists() {

        // TODO Auto-generated method stub

        return false;

    }

    @Override

    public ImageDescriptor getImageDescriptor() {

        // TODO Auto-generated method stub

        return null;//WorkbenchImages.getImageDescriptor("");

    }

    @Override

    public String getName() {

        // TODO Auto-generated method stub

        return "testEditorInput";

    }

    @Override

    public IPersistableElement getPersistable() {

        // TODO Auto-generated method stub

        return null;

    }

    @Override

    public String getToolTipText() {

        // TODO Auto-generated method stub

        return null;

    }

    @Override

    public Object getAdapter(Class adapter) {

        // TODO Auto-generated method stub

        return null;

    }

}

解決方法：重寫getToolTipText()方法return值可以為""或任意字元類型。

    public String getToolTipText() {