java swing开发最简单的浏览器源代码下载

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原文：java swing开发最简单的浏览器源代码下载
源代码下载地址：http://www.zuidaima.com/share/1550463483628544.htm
java swing开发最简单的浏览器，已测试....
package com.zuidaima;    import org.eclipse.swt.SWT;import org.eclipse.swt.browser.Browser;import org.eclipse.swt.browser.CloseWindowListener;import org.eclipse.swt.browser.LocationAdapter;import org.eclipse.swt.browser.LocationEvent;import org.eclipse.swt.browser.OpenWindowListener;import org.eclipse.swt.browser.ProgressAdapter;import org.eclipse.swt.browser.ProgressEvent;import org.eclipse.swt.browser.StatusTextEvent;import org.eclipse.swt.browser.StatusTextListener;import org.eclipse.swt.browser.TitleEvent;import org.eclipse.swt.browser.TitleListener;import org.eclipse.swt.browser.WindowEvent;import org.eclipse.swt.events.KeyAdapter;import org.eclipse.swt.events.KeyEvent;import org.eclipse.swt.events.MouseAdapter;import org.eclipse.swt.events.MouseEvent;import org.eclipse.swt.events.SelectionAdapter;import org.eclipse.swt.events.SelectionEvent;import org.eclipse.swt.layout.GridData;import org.eclipse.swt.layout.GridLayout;import org.eclipse.swt.widgets.Button;import org.eclipse.swt.widgets.Combo;import org.eclipse.swt.widgets.Composite;import org.eclipse.swt.widgets.Display;import org.eclipse.swt.widgets.Label;import org.eclipse.swt.widgets.Menu;import org.eclipse.swt.widgets.MenuItem;import org.eclipse.swt.widgets.ProgressBar;import org.eclipse.swt.widgets.Shell;import org.eclipse.swt.widgets.TabFolder;import org.eclipse.swt.widgets.TabItem;/** * 挺好使的..... * @author www.zuidaima.com * */public class Liulanqi {//基于标签式的浏览器 private volatile String newUrl = null;// 最新输入的链接 private volatile boolean loadCompleted = false;//表示当前页面完全导入  private volatile boolean openNewItem=false;//表示新的页面在新窗口中打开  /*  * 浏览器的当前标签参数  */  private TabItem tabItem_now;//当前标签项  private Browser browser_now;//当前功能浏览器 /*  * 浏览器设置参数  */ private String homePage = "www.baidu.com";// 浏览器的首页 /*  * 浏览器外形布置  */ private Button button_back;//后退按钮 private Button button_forward;//向前按钮 private Button button_go;//前进按钮 private Button button_stop;//停止按钮 private Combo combo_address;// 地址栏 private Browser browser_default = null;// 浏览窗口 private ProgressBar progressBar_status;// 网页打开进度表，即页面导入情况栏 private Label label_status;// 最终网页打开过程显示 private TabFolder tabFolder;// Browser的容器 private Composite composite_tool;// 工具栏区域 private Composite composite_browser;// 浏览窗口区域 private Composite composite_status;// 状态栏区域 protected Display display; protected Shell shell_default; /**  * Launch the application  *   * @param args  */ public static void main(String[] args) {  try {   Liulanqi window = new Liulanqi();   window.open();  } catch (Exception e) {   e.printStackTrace();  } } /**  * Open the window  */ public void open() {  display = Display.getDefault();  shell_default = new Shell(display);  createContents();  shell_default.open();  shell_default.layout();  while (!shell_default.isDisposed()) {   if (!display.readAndDispatch())    display.sleep();  } } /**  * Create contents of the window  */ protected void createContents() {  shell_default.setSize(649, 448);  shell_default.setText("浏览器");  GridLayout gl_shell = new GridLayout();  gl_shell.marginWidth = 0;// 组件与容器边缘的水平距离  gl_shell.marginHeight = 0;// 组件与容器边缘的垂直距离  gl_shell.horizontalSpacing = 0;// 组件之间的水平距离  gl_shell.verticalSpacing = 0;// 组件之间的垂直距离  shell_default.setLayout(gl_shell);  /*   * 创建浏览器界面   */  //createMenu();//没有实现  createTool();  createBrowser();  createStatus();  /*   * 创建浏览器相关事件监听   */  runThread(); } /*  * 创建基本工具栏，不包括相关事件监听  */ private void createTool() {  composite_tool = new Composite(shell_default, SWT.BORDER);  // GridData()第一个参数是水平排列方式，第二个参数是垂直排列方式,第三个是水平抢占是否,第四个参数是垂直抢占是否  GridData gd_composite = new GridData(SWT.FILL, SWT.CENTER, true, false);  gd_composite.heightHint = 30;// 高度和宽度  gd_composite.widthHint = 549;  composite_tool.setLayoutData(gd_composite);  GridLayout fl_composite = new GridLayout();  fl_composite.numColumns = 8;  composite_tool.setLayout(fl_composite);  button_back = new Button(composite_tool, SWT.NONE);  button_back.setLayoutData(new GridData(27, SWT.DEFAULT));// 设置大小和格式  button_back.setText("<-");  button_forward = new Button(composite_tool, SWT.NONE);  button_forward.setLayoutData(new GridData(24, SWT.DEFAULT));  button_forward.setText("->");    combo_address = new Combo(composite_tool, SWT.BORDER);  final GridData gd_combo_3 = new GridData(SWT.FILL, SWT.LEFT, true,    false);// 在窗口变化时，自动扩展水平方向的大小  gd_combo_3.widthHint = 300;// 起始宽度  gd_combo_3.minimumWidth = 50;// 设置最小宽度  combo_address.setLayoutData(gd_combo_3);  button_go = new Button(composite_tool, SWT.NONE);  button_go.setLayoutData(new GridData(25, SWT.DEFAULT));  button_go.setText("go");  button_stop = new Button(composite_tool, SWT.NONE);  button_stop.setLayoutData(new GridData(24, SWT.DEFAULT));  button_stop.setText("stop");  final Label label = new Label(composite_tool, SWT.SEPARATOR    | SWT.VERTICAL);  label.setLayoutData(new GridData(2, 17)); } /*  * 创建浏览器，不包括相关事件监听  */ private void createBrowser() {  composite_browser = new Composite(shell_default, SWT.NONE);  final GridData gd_composite = new GridData(SWT.FILL, SWT.FILL, true,    true);// 充满窗口,且水平和垂直方向随窗口而变  gd_composite.heightHint = 273;  composite_browser.setLayoutData(gd_composite);  GridLayout gl_composite = new GridLayout();  gl_composite.marginHeight = 0;// 使组件上下方向容器  gl_composite.marginWidth = 0;// 使组件左右方向占满容器  composite_browser.setLayout(gl_composite);  tabFolder = new TabFolder(composite_browser, SWT.NONE);  final GridData gd_tabFolder = new GridData(SWT.FILL, SWT.FILL, true,    true);  gd_tabFolder.heightHint = 312;  gd_tabFolder.widthHint = 585;  tabFolder.setLayoutData(gd_tabFolder);      /*   * 为标签添加右键功能   */  tabFolder.addMouseListener(new MouseAdapter(){   @Override   public void mouseUp(MouseEvent e) {    if(e.button==3){//右键     Menu menu_itemRightMouse=new Menu(shell_default,SWT.POP_UP);     tabFolder.setMenu(menu_itemRightMouse);     MenuItem menuItem_itemClose=new MenuItem(menu_itemRightMouse,SWT.NONE);     menuItem_itemClose.setText("关闭当前标签");     menuItem_itemClose.addSelectionListener(new SelectionAdapter(){      @Override      public void widgetSelected(SelectionEvent e) {       if(tabFolder.getItemCount()!=1){//不是只存在一个标签的情况下        browser_now.dispose();        tabItem_now.dispose();        tabFolder.redraw();       }else{//只有一个标签        browser_now.setUrl(":blank");        browser_now.setText("");       }      }     });     MenuItem menuItem_itemCloseAll=new MenuItem(menu_itemRightMouse,SWT.NONE);     menuItem_itemCloseAll.setText("关闭所有标签");     menuItem_itemCloseAll.addSelectionListener(new SelectionAdapter(){      @Override      public void widgetSelected(SelectionEvent e) {       shell_default.close();      }     });    }   }  });      final TabItem tabItem_default = new TabItem(tabFolder, SWT.NONE);  browser_default = new Browser(tabFolder, SWT.NONE);  tabItem_default.setControl(browser_default);  browser_default.setUrl(homePage);// 显示浏览器首页      /*   * 把初始化的标签置顶,选中   */  tabFolder.setSelection(tabItem_default); } /*  * 创建浏览器底部状态栏，不包括相关事件监听  */ private void createStatus() {  composite_status = new Composite(shell_default, SWT.NONE);  final GridData gd_composite = new GridData(SWT.FILL, SWT.FILL, true,    false);// 参数true使状态栏可以自动水平伸缩  gd_composite.heightHint = 20;  gd_composite.widthHint = 367;  composite_status.setLayoutData(gd_composite);  GridLayout gl_composite = new GridLayout();  gl_composite.numColumns = 2;  gl_composite.marginBottom = 5;  composite_status.setLayout(gl_composite);  label_status = new Label(composite_status, SWT.NONE);  GridData gd_status = new GridData(SWT.FILL, SWT.CENTER, true, false);  gd_status.heightHint = 13;  gd_status.widthHint = 525;  label_status.setLayoutData(gd_status);  progressBar_status = new ProgressBar(composite_status, SWT.BORDER    | SWT.SMOOTH);  progressBar_status.setLayoutData(new GridData(80, 12));  progressBar_status.setVisible(false);// 打开过程初始不可见 } private void runThread( ) {    /*   * 浏览器新标签前进、后退按钮的默认可用性为不可用   */  button_back.setEnabled(false);  button_forward.setEnabled(false);    /*   * 获取浏览器的当前标签和功能Browser   */  tabItem_now=tabFolder.getItem(tabFolder.getSelectionIndex());  browser_now=(Browser) tabItem_now.getControl();     /*   * 选中事件发生时，修改当前浏览器标签   */  tabFolder.addSelectionListener(new SelectionAdapter(){   @Override   public void widgetSelected(SelectionEvent e) {    TabItem temp=(TabItem) e.item;    if(temp!=tabItem_now){//防止重选一个标签，预防多次触发相同事件     tabItem_now=temp;     browser_now=(Browser)tabItem_now.getControl();     //System.out.println("当前标签被修改了");//调试语句          /*      * 在相应的标签中，前进、后退按钮可用性是不一样的      */     if(browser_now.isBackEnabled()){//后退按钮的可用性      button_back.setEnabled(true);     }else{      button_back.setEnabled(false);     }     if(browser_now.isForwardEnabled()){//前进按钮的可用性      button_forward.setEnabled(true);     }else{      button_forward.setEnabled(false);     }          }   }  });     /*   * 添加浏览器的后退、向前、前进、停止按钮事件监听   */  button_back.addSelectionListener(new SelectionAdapter() {   @Override   public void widgetSelected(SelectionEvent arg0) {    if (browser_now.isBackEnabled()){//本次可后退     browser_now.back();     button_forward.setEnabled(true);//下次可前进，前进按钮可用     //System.out.println("可后退");//调试语句    }    if(!browser_now.isBackEnabled()){//下次不可后退，后退按钮不可用     button_back.setEnabled(false);    }   }  });  button_forward.addSelectionListener(new SelectionAdapter() {   @Override   public void widgetSelected(SelectionEvent arg0) {    if (browser_now.isForwardEnabled()){//本次可前进     browser_now.forward();     button_back.setEnabled(true);//后退按钮可用     //System.out.println("可向前");//调试语句    }    if(!browser_now.isForwardEnabled()){//下次不可前进，前进按钮不可用     button_forward.setEnabled(false);         }   }  });  button_stop.addSelectionListener(new SelectionAdapter() {   @Override   public void widgetSelected(SelectionEvent arg0) {    browser_now.stop();   }  });    combo_address.addKeyListener(new KeyAdapter() {// 手动输入地址栏后，按回车键转到相应网址   @Override   public void keyReleased(KeyEvent e) {    if (e.keyCode == SWT.CR) {//回车键触发事件     browser_now.setUrl(combo_address.getText());    }   }  });  /*   * 1>在addOpenWindowListener()下的open()写入e.browser = browser_new情况下，导入新的超级链接,   * 只有当点击页面上的链接,且链接不在新的页面打开时才会发生.   * 2>在addOpenWindowListener()下的open()不写入e.browser = browser_new情况下，导入新的超级链接，   * 只有当点击页面上的链接,且链接在新的页面打开时才会发生.   * 除了以上两种外，当然还包括browser.back()、browser.forward()、browser.go()、browser.setUrl()发生时触发,   * 但changing()在不写入e.browser = browser_new情况下,不被browser.setUrl()触发   */  browser_now.addLocationListener(new LocationAdapter() {   @Override   public void changing(LocationEvent e) {// 表示超级链接地址改变了    if(openNewItem==false){//新的页面在同一标签中打开     button_back.setEnabled(true);//后退按钮可用,此句是后退按钮可用判定的逻辑开始点    }    //System.out.println("location_changing");// 调试语句   }   @Override   public void changed(LocationEvent e) {// 找到了页面链接地址    combo_address.setText(e.location);// 改变链接地址显示    /*     * 新的页面已经打开,browser的LocationListener已经监听完毕,openNewItem回复默认值     */    if(openNewItem==true){     openNewItem=false;    }    //System.out.println("location_changed");// 调试语句       }  });  /*   *  新的超级链接页面的导入的百分比,在导入新的页面时发生，此时链接地址已知   */  browser_now.addProgressListener(new ProgressAdapter() {   @Override   public void changed(ProgressEvent e) {//本事件不断发生于页面的导入过程中    progressBar_status.setMaximum(e.total);// e.total表示从最开始页面到最终页面的数值    progressBar_status.setSelection(e.current);    if (e.current != e.total) {//页面还没完全导入     loadCompleted = false;     progressBar_status.setVisible(true);// 页面的导入情况栏可见    } else {     loadCompleted = true;     progressBar_status.setVisible(false);// 页面导入情况栏不可见    }    //System.out.println("progress_changed");//调试语句   }   @Override   public void completed(ProgressEvent arg0) {//发生在一次导入页面时,本监听器changed事件最后一次发生之前    //System.out.println("progress_completed");//调试语句   }  });  /*   *  获取页面内容过程,文字显示addProgressListener()过程,同时还能检测到已打开页面的存在的超级链接,就是用给功能来获取   *  新的链接地址的   */  browser_now.addStatusTextListener(new StatusTextListener() {   public void changed(StatusTextEvent e) {    if (loadCompleted == false) {     label_status.setText(e.text);    } else {     newUrl = e.text;//页面导入完成，捕捉页面上可能打开的链接    }    //System.out.println("statusText_changed");//调试语句   }  });  /*   * 显示页面的提示语句，在新的页面导入时发生   */  browser_now.addTitleListener(new TitleListener() {   public void changed(TitleEvent e) {    shell_default.setText(e.title);    if (e.title.length() > 3) {//显示当前页面提示字符在标签上     tabItem_now.setText(e.title.substring(0, 3) + "..");    } else {     tabItem_now.setText(e.title);    }    tabItem_now.setToolTipText(e.title);//标签显示提示符   }  });  /*   * 打开新的页面，当前打开页面新的链接需要在新的窗口页面打开时发生.addOpenWindowListener下open()中的一句   * e.browser = browser_new;关键部分.联系addOpenWindowListener、addVisibilityWindowListener   * 和addDisposeListener的值传递枢纽   */  browser_now.addOpenWindowListener(new OpenWindowListener() {// 在当前页面中打开点击的链接页面     public void open(WindowEvent e) {      Browser browser_new = new Browser(tabFolder, SWT.NONE);      TabItem tabItem_new = new TabItem(tabFolder, SWT.NONE);      tabItem_new.setControl(browser_new);      tabFolder.setSelection(tabItem_new);//新打开的页面标签置顶      tabFolder.redraw();//刷新容器      browser_new.setUrl(newUrl);//新标签中设置新的链接地址      openNewItem=true;//新的页面在新的标签中打开         /*       * 关键部分,告知新的页面由browser_new打开,只要实现这句就不会弹出操作系统默认的浏览器了       */      e.browser = browser_new;      //System.out.println("OpenWindowListener_open");//调试语句            /*       * 为浏览器新的标签添加事件监听       */      display.syncExec(new Runnable(){       public void run() {        runThread();        }      });                      }    });    /*   * 浏览器关闭事件,关闭当前功能浏览器,不然的话浏览器主窗口关闭了，还有进程在运行   */  browser_now.addCloseWindowListener(new CloseWindowListener(){   public void close(WindowEvent e) {    browser_now.dispose();   }  }); }}
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