ThreadLocal生成多線程WebClient

package test;


//www.cnblogs.com/chenying99/articles/3213544.html
import com.gargoylesoftware.htmlunit.BrowserVersion;
import com.gargoylesoftware.htmlunit.NicelyResynchronizingAjaxController;
import com.gargoylesoftware.htmlunit.WebClient;
//多線程webclient,本方案簡單、小巧，容易理解
//ThreadLocalClientFactory.getInstance().getWebClient()調用
    public  class ThreadLocalClientFactory{
        
            //單例工廠模式
        private final static ThreadLocalClientFactory instance =new ThreadLocalClientFactory();
        
        public static ThreadLocalClientFactory getInstance(){
            return instance;
            }
        
        
        // 覆寫ThreadLocal的initialValue方法
        //線程的本地實例存儲器，用於存儲WebClient實例
      private ThreadLocal<WebClient> client = new ThreadLocal<WebClient>() {  
    
          @Override    
      //該方法ThreadLocal變量第一次get的時候執行,若是該線程已經執行過set方法，initialValue不會執行
      protected synchronized WebClient initialValue(){  
          WebClient webClient = new WebClient(BrowserVersion.FIREFOX_17);  
            
           //設置webClient的相關參數  
          webClient.getCookieManager().setCookiesEnabled(true);// 開啓cookie管理
            webClient.getOptions().setJavaScriptEnabled(true);// 開啓js解析
            webClient.getOptions().setCssEnabled(false);
            // 當出現Http error時，程序不拋異常繼續執行
            webClient.getOptions().setThrowExceptionOnFailingStatusCode(false);
            // 防止js語法錯誤拋出異常
            webClient.getOptions().setThrowExceptionOnScriptError(false); // js運行錯誤時，是否拋出異常
            webClient.getOptions().setTimeout(10000);
            // 默認是false, 設置爲true的話不讓你的瀏覽行爲被記錄
            webClient.getOptions().setDoNotTrackEnabled(false);
            // 設置Ajax異步處理控制器即啓用Ajax支持
            webClient
                    .setAjaxController(new NicelyResynchronizingAjaxController());
        
          return webClient;  
      }  
  };  
    
  
  public void setWebClient(WebClient wc) {  
      client.set(wc);  
  }  
    
  public WebClient getWebClient() {  
      return client.get();  
  } 
  

    }