GWT 2.4 IE8問題

我使用GWT 2.4（我無法將我的版本升級到2.5）我遇到以下問題：當我使用Chrome，Firefox或Internet Explorer 9或10時，我的系統工作正常非常好;通過使用Internet Explorer 8，我的系統根本不起作用;它顯示了一個空白頁面的用戶，我得到了以下JavaScript錯誤：GWT 2.4 IE8問題

Dettagli errore pagina Web

Agente utente: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0) Timestamp: Thu, 5 Sep 2013 10:56:58 UTC

Messaggio: Argomento non valido. Linea: 28410 Carattere: 54 Codice: 0 URI: http://app.it:8080/myApp/F662F41B287D1686DCB056062754DFEB.cache.html

我正在尋找在網上，我發現這個鏈接：https://code.google.com/p/google-web-toolkit/issues/detail?id=6665 在這個GWT問題，解釋了GWT 2.4有問題與IE8和chromeframe;我做了他們的建議。其實我所做的是：

添加以下元標記：元HTTP的當量= 「X-UA兼容」內容=「IE =邊緣，鍍鉻= 1 「
我創造了我的自定義PropertyProviderGenerator（見下面的代碼）
在我.gwt.xml文件I指定使用個性化的PropertyProviderGenerator（見下面的代碼）

PropertyProviderGenerator

import com.google.gwt.core.ext.TreeLogger; 
import com.google.gwt.core.ext.linker.ConfigurationProperty; 
import com.google.gwt.core.ext.linker.PropertyProviderGenerator; 

import java.util.Arrays; 
import java.util.List; 
import java.util.SortedSet; 

public class CustomUserAgentPropertyGenerator implements PropertyProviderGenerator { 

    private static final List<String> VALID_VALUES = Arrays.asList(new String[]{"ie6", "ie8", "gecko1_8", "safari", "opera", "ie9"}); 

    private static UserAgentPropertyGeneratorPredicate[] predicates = 
      new UserAgentPropertyGeneratorPredicate[] { 

     // opera 
     new UserAgentPropertyGeneratorPredicate("opera") 
     .getPredicateBlock() 
     .println("return (ua.indexOf('opera') != -1);") 
     .returns("'opera'"), 

    // webkit family (chrome, safari and chromeframe). 
    new UserAgentPropertyGeneratorPredicate("safari") 
    .getPredicateBlock() 
     .println("return (ua.indexOf('webkit') != -1);") 
     .returns("'safari'"), 

     // IE9 
     new UserAgentPropertyGeneratorPredicate("ie9") 
     .getPredicateBlock() 
     .println("return (ua.indexOf('msie') != -1 && ($doc.documentMode >= 9));") 
     .returns("'ie9'"), 

     // IE8 
     new UserAgentPropertyGeneratorPredicate("ie8") 
     .getPredicateBlock() 
     .println("return (ua.indexOf('msie') != -1 && ($doc.documentMode >= 8));") 
     .returns("'ie8'"), 

     // IE6 
     new UserAgentPropertyGeneratorPredicate("ie6") 
     .getPredicateBlock() 
     .println("var result = /msie ([0-9]+)\\.([0-9]+)/.exec(ua);") 
     .println("if (result && result.length == 3)") 
     .indent() 
     .println("return (makeVersion(result) >= 6000);") 
     .outdent() 
     .returns("'ie6'"), 

     // gecko family 
     new UserAgentPropertyGeneratorPredicate("gecko1_8") 
     .getPredicateBlock() 
     .println("return (ua.indexOf('gecko') != -1);") 
     .returns("'gecko1_8'"), 
    }; 

    static void writeUserAgentPropertyJavaScript(SourceWriter body, SortedSet<String> possibleValues) { 

     // write preamble 
     body.println("var ua = navigator.userAgent.toLowerCase();"); 
     body.println("var makeVersion = function(result) {"); 
     body.indent(); 
     body.println("return (parseInt(result[1]) * 1000) + parseInt(result[2]);"); 
     body.outdent(); 
     body.println("};"); 

     // write only selected user agents 
     for (int i = 0; i < predicates.length; i++) { 
      if (possibleValues.contains(predicates[i].getUserAgent())) { 
       body.println("if ((function() { "); 
       body.indent(); 
       body.print(predicates[i].toString()); 
       body.outdent(); 
       body.println("})()) return " + predicates[i].getReturnValue() + ";"); 
      } 
     } 

    // default return 
    body.println("return 'unknown';"); 
} 

    public String generate(TreeLogger logger, SortedSet<String> possibleValues, String fallback, SortedSet<ConfigurationProperty> configProperties) { 
     for (String value : possibleValues) { 
      if (!VALID_VALUES.contains(value)) { 
       logger.log(TreeLogger.WARN, "Unrecognized " 
         + UserAgentGenerator.PROPERTY_USER_AGENT + " property value '" 
         + value + "', possibly due to UserAgent.gwt.xml and " 
         + UserAgentPropertyGenerator.class.getName() 
         + " being out of sync." + " Use <set-configuration-property name=\"" 
         + UserAgentGenerator.PROPERTY_USER_AGENT_RUNTIME_WARNING 
         + "\" value=\"false\"/> to suppress this warning message."); 
      } 
     } 
     assert predicates.length == VALID_VALUES.size(); 
     StringSourceWriter body = new StringSourceWriter(); 
     body.println("{"); 
     body.indent(); 
     writeUserAgentPropertyJavaScript(body, possibleValues); 
     body.outdent(); 
     body.println("}"); 
     return body.toString(); 
    } 
}

MySystem.gwt.xml

<?xml version="1.0" encoding="UTF-8"?> 
<module rename-to='mysystem'> 
<!-- some inherits --> 
<property-provider name="user.agent" generator="com.google.gwt.user.rebind.mysystemUserAgentPropertyGenerator"/> 
<inherits name="com.google.gwt.user.UserAgent"/> 
<set-configuration-property name="user.agent.runtimeWarning" value="false"/> 
<!-- the rest of the file --> 
<extend-property name="locale" values="en, it" /> 
</module>

可悲的是通過這樣做我不解決這個問題任何人都可以建議我任何其他的事情嘗試？

謝謝

安傑洛

來源

2013-09-05 Angelo Immediata