給WebWork2.2增加JavaScript客戶端校驗(二)

(接上文)

注:以下代碼大部分來自WebWork 2.1.6對應的文件,非作者自己撰寫.加入的代碼需要import一些類,請自己導入.

修改UIBean.java

1.在evaluateParams方法中的最后一行代碼, 

 evaluateExtraParams();

之前增加如下代碼

//by scud start if (canJSValidator() && ( form != null) ) {     // register ScriptValiationAware validators for this UI tag with the form     Boolean validate = (Boolean) form.getParameters().get("validate");     if ((validate != null) && validate.booleanValue() && (form.getActionClass() != null) && (form.getActionName() != null) && name != null) {         findScriptingValidators(form, (String) name, form.getActionClass(), null);     } } //by scud end

2.增加一些方法,可以放在UIBean的最后

//by scud start         /**      * Finds all ScriptValidationAware validators that apply to the field covered by this tag.      *      * @param formTag      the parent form tag this tag is in      * @param fieldName    the name of the field to validate (used for error message key)      * @param fieldClass   the Class of the object the field is for      * @param propertyName the actual property name to get validator for; if null, fieldName is used      */     private void findScriptingValidators(Form formTag, String fieldName, Class fieldClass, String propertyName) {         List validators = ActionValidatorManager.getValidators(fieldClass, formTag.getActionName());         String name = fieldName;         if (propertyName != null) {             name = propertyName;         }         for (Iterator iterator = validators.iterator(); iterator.hasNext();) {             Validator validator = (Validator) iterator.next();             if (!(validator instanceof ScriptValidationAware)) {                 continue;             }             ValidatorContext validatorContext = new DelegatingValidatorContext(fieldClass);             if (validator instanceof FieldValidator) {                 FieldValidator fieldValidator = (FieldValidator) validator;                 // JavaScriptVisitorFieldValidators must validate model, not action                 if (validator instanceof JavaScriptVisitorFieldValidator) {                     JavaScriptVisitorFieldValidator visitorValidator = (JavaScriptVisitorFieldValidator) validator;                     String propName = null;                     boolean visit;                     if (visitorValidator.getFieldName().equals("model") && ModelDriven.class.isAssignableFrom(fieldClass)) {                         visit = true;                     } else {                         String baseName = name;                         int idx = name.indexOf(".");                         if (idx != -1) {                             baseName = name.substring(0, idx);                             propName = name.substring(idx + 1);                         }                         visit = baseName.equals(visitorValidator.getFieldName());                     }                     if (visit) {                         Class realFieldClass = visitorValidator.getValidatedClass();                         if (realFieldClass == null) {                             for (Iterator iterator1 = getStack().getRoot().iterator(); iterator1.hasNext();) {                                 Object o = iterator1.next();                                 try {                                     PropertyDescriptor pd =                                             OgnlRuntime.getPropertyDescriptor(o.getClass(), visitorValidator.getFieldName());                                     realFieldClass = pd.getPropertyType();                                     break;                                 } catch (Throwable t) {                                     // just keep trying                                 }                             }                         }                         if (realFieldClass != null) {                             if (visitorValidator.isAppendPrefix()) {                                 findScriptingValidators(formTag, visitorValidator.getFieldName() + "." + name, realFieldClass, propName);                             } else {                                 findScriptingValidators(formTag, name, realFieldClass, propName);                             }                         } else {                             LOG.warn("Cannot figure out class of visited object");                         }                     }                 } else if (fieldValidator.getFieldName().equals(name)) {                     validator.setValidatorContext(validatorContext);                     formTag.registerValidator((ScriptValidationAware) fieldValidator, new HashMap(getParameters()));                 }             } else {                 validator.setValidatorContext(validatorContext);                 formTag.registerValidator((ScriptValidationAware) validator, new HashMap(getParameters()));             }         }     }         /**      * will validator by javascript .      *      * @return true if set in webwork.properties,else false      */     public static boolean canJSValidator()     {         String propString = "jsvalidator";         if(Configuration.isSet(propString))         {             return "true".equals(Configuration.getString(propString));         }                 return false;     }         //by scud end

修改Form.java

1.增加一些字段

//by scud start     Class actionClass;     String actionName;         List fieldParameters;     List fieldValidators;         //by scud end

2.添加代碼 在方法 evaluateExtraParams() 中

addParameter("namespace", namespace);

之前:

//by scud start         try {         actionClass = ObjectFactory.getObjectFactory().getClassInstance(actionConfig.getClassName());     } catch (ClassNotFoundException e) {         // this is ok     }         actionName = action;         //by scud end

3.在方法 evaluateExtraParams() 的最后增加:

//by scud start                 if(canJSValidator())         {             if (fieldValidators != null) {                 StringBuffer js = new StringBuffer();                     // loop backwards so that the first elements are validated first                 for (int i = 0; i < fieldValidators.size(); i++) {                     ScriptValidationAware sva = (ScriptValidationAware) fieldValidators.get(i);                     Map params = (Map) fieldParameters.get(i);                     js.append(sva.validationScript(params));                     js.append('\n');                 }                     addParameter("javascriptValidation", js.toString());             } else {                 addParameter("javascriptValidation", "http:// cannot find any applicable validators");             }                }                 //by scud end

4.增加一些方法

//by scud start         public Class getActionClass() {         return actionClass;     }     public String getActionName() {         return actionName;     }         /**      * Registers ScriptAware validators that should be called when the form is closed to output      * necessary script.      * <p />      * Registration of validators is open until the first time the end of the tag is reached or      * there will be duplicate validators if the tag is cached.      */     public void registerValidator(ScriptValidationAware sva, Map params) {         if (fieldValidators == null) {             fieldValidators = new ArrayList();             fieldParameters = new ArrayList();         }         fieldValidators.add(sva);         fieldParameters.add(params);     }         //by scud end

注意:在原有的Form.java里有一個小小的bug,參考 http://forums.opensymphony.com/thread.jspa?threadID=7390&tstart=0 ,在后續版本中應該會被修復.

相關代碼如下:

// if the id isn't specified, use the action name     if (id == null) {         id = action; //增加了這行         addParameter("id", action);     }

　

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posted on 2005-10-03 14:37 Scud(飛云小俠) 閱讀(1167) 評論(0)  編輯  收藏 所屬分類: WEB