Question

我有一行，用于检查页面上是否存在部分文字的特定元素。

self.b.find_element_by_xpath(".//*[contains(text(), '%s')]" % item_text)

因此item_text可能在字符串中有单引号。例如"Hanes Men's Graphic "。

变为self.b.find_element_by_xpath(".//*[contains(text(), 'Hanes Men's Graphic ')]")

在这种情况下，我收到错误：

InvalidSelectorError: Unable to locate an element with the xpath expression .//*[contains(text(), 'Hanes Men's Graphic ')] because of the following error:
SyntaxError: The expression is not a legal expression.

在item_text

中使用self.b.find_element_by_xpath(".//*[contains(text(), '%s')]" % item_text)之前，我应该对

-(void)parseJSON:(NSArray *)json entity:(NSString *)entityName{

[json enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
    NSArray *primaryKeyNameJSON = [self getPrimaryKeyNameForEntityInJSON:entityName];
    NSArray *primaryKey = [obj objectsForKeys:primaryKeyNameJSON notFoundMarker:@""];
    NSArray *primaryKeyName = [self getPrimaryKeyNameForEntity:entityName];

    NSDictionary *primaryKeysAndValues = [NSDictionary dictionaryWithObjects:primaryKey forKeys:primaryKeyName];

    NSManagedObject *managedObj = [self getManagedObjectForEntity:entityName primaryKey:primaryKeysAndValues jsonEntity:entityName json:obj];

    NSDictionary *allAttributes = [[managedObj entity] attributesByName];
    NSArray *attributesKeys = [allAttributes allKeys];

    NSDictionary *allRelationships = [[managedObj entity] relationshipsByName];
    NSArray *relationshipsKeys = [allRelationships allKeys];

    NSArray *keys = [obj allKeys];
    for (NSString *jsonKey in keys) {

        NSString *dbKey = [self getDBKeyForJSONKey:jsonKey entity:entityName];
        if ([attributesKeys containsObject:dbKey]) {
            //Attribute
            NSAttributeDescription *oneAttribute = [allAttributes objectForKey:dbKey];
            if ([oneAttribute attributeType] == NSDateAttributeType){
                [managedObj setValue:[[self dateFormatterJSon] dateFromString:[obj objectForKey:jsonKey]] forKey:dbKey];
            }else if ([oneAttribute attributeType] == NSInteger32AttributeType || [oneAttribute attributeType] == NSFloatAttributeType){
                [managedObj setValue:[[self numberFormatterJSon] numberFromString:[obj objectForKey:jsonKey]] forKey:dbKey];
            }else if ([oneAttribute attributeType] == NSStringAttributeType)
                [managedObj setValue:[obj objectForKey:jsonKey] forKey:dbKey];
            else if ([oneAttribute attributeType] == NSBooleanAttributeType) {
                if ([[obj objectForKey:jsonKey]  isEqual: @"-1"] || [[obj objectForKey:jsonKey]  isEqual: @"1"]){
                    [managedObj setValue:[NSNumber numberWithBool:YES] forKey:dbKey];
                }else{
                    [managedObj setValue:[NSNumber numberWithBool:NO] forKey:dbKey];
                }
            }
        }
        else if ([relationshipsKeys containsObject:dbKey]) {
            //Relationship
            NSRelationshipDescription *oneRelationship = [allRelationships objectForKey:dbKey];
            NSString *destRelationshipEntityName = [[oneRelationship destinationEntity] name];

            NSArray *destRelationshipPrimaryKeyName = [self getPrimaryKeyNameForEntity:destRelationshipEntityName];
            NSArray *destRelationshipPrimaryKeyValues = [[NSArray alloc] init];
            destRelationshipPrimaryKeyValues = [obj objectsForKeys:[self getPrimaryKeyNameForEntity:destRelationshipEntityName inJSONEntity:entityName attrName:jsonKey] notFoundMarker:@""];
            NSDictionary *destRelPrimaryKeysAndValues = [NSDictionary dictionaryWithObjects:destRelationshipPrimaryKeyValues forKeys:destRelationshipPrimaryKeyName];

            NSManagedObject *destManagedObject = [self getManagedObjectForEntity:destRelationshipEntityName primaryKey:destRelPrimaryKeysAndValues jsonEntity:entityName json:obj];

            [managedObj setValue:destManagedObject forKey:dbKey];
    }
}];
}

执行哪些操作

我知道我可以在表达式周围使用单引号并在内部使用双引号，但这不是我正在寻找的解决方案。

Answer 1

尝试如下： -

self.b.find_element_by_xpath(".//*[contains(text(), \"Hanes Men's Graphic\")]")

或

self.b.find_element_by_xpath('.//*[contains(text(), "%s")]' % item_text)

或

self.b.find_element_by_xpath(".//*[contains(text(), \"%s\")]" % item_text)

希望它能起作用.. :)

Answer 2

可能是xpath实现不允许字符串使用双引号，因此您需要执行类似

的操作

if (item_text.find("'")):
    item_text= item_text.replace("'", "', \"'\", '")
    item_text= "concat('" + item_text+ "')"
else:
    item_text = "'" + item_text + "'"

self.b.find_element_by_xpath(".//*[contains(text(), %s)]" % item_text)

如何在xpath中处理单引号

2 个答案: