Question

我在从文本文件中获取Json Objects并能够在javascript函数中使用它们时遇到问题。但是，如果只有一个Json对象，它就可以工作。然后，当我开始拥有多个Json对象时，它会给出错误：Uncaught SyntaxError: Unexpected token [

以下是我的代码：

的iOS

    NSString *post = @"";
    NSDictionary *firstJsonDictionary = [NSDictionary dictionaryWithObjectsAndKeys:@"1025", @"DateandTime", logString, @"Description", [self getLogTypeName:(LOGS)level], @"LoggingLevel", nil];
    NSMutableArray *arrayTest = [[NSMutableArray alloc] init];

    [arrayTest addObject:firstJsonDictionary];
    NSData *jsonData2 = [NSJSONSerialization dataWithJSONObject:arrayTest options:NSJSONWritingPrettyPrinted error:nil];
    NSString *jsonString = [[NSString alloc] initWithData:jsonData2 encoding:NSUTF8StringEncoding];


    post = [NSString stringWithFormat:@"Message=%@", jsonString];

    NSLog(@"Post Data: \n%@", post);
    NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
    NSString *postLength = [NSString stringWithFormat:@"%d", [postData length]];
    NSURL *logURL = [NSURL URLWithString:@"TestPHP.php"];
    NSMutableURLRequest *logRequest = [NSMutableURLRequest requestWithURL:logURL];
    [logRequest setHTTPMethod:@"POST"];
    [logRequest setValue:postLength forHTTPHeaderField:@"Content-Length"];
    [logRequest setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];
    [logRequest setHTTPBody:postData];
    NSURLConnection *logConnection = [[NSURLConnection alloc] initWithRequest:logRequest delegate:self];

PHP

    $file = 'testingFile.txt';
    // Open the file to get existing content
    $current = file_get_contents($file);
    if (isset($_POST['Message'])) {
    // Append a new person to the file
    $current .= $_POST['Message'] . PHP_EOL; 
    // Write the contents back to the file
    file_put_contents($file, $current);

    } else {
        $Contents = file_get_contents($file);
        echo $Contents;
    }

的Javascript

    function GetLoggingData() {
      $.get("../ISOSEC/logging/TestPHP.php", function(data){
          $.each($.parseJSON(data), function(idx, obj) {
             console.log(obj.DateandTime);
             console.log(obj.LoggingLevel);
             console.log(obj.Description);
             AddLog(obj.DateandTime, obj.LoggingLevel, obj.Description);
          });

      });
    }

TEXTFILE

   [
     {
        "DateandTime" : "1025",
        "LoggingLevel" : "ERROR",
        "Description" : "Test"
     }
   ]
   [
     {
       "DateandTime" : "1025",
       "LoggingLevel" : "ERROR",
       "Description" : "Test"
     }
   ]

如果有人能够解释我做错了什么会非常棒。先谢谢你。

Answer 1

这就是你制作数组的方法

   [
     {
        "DateandTime" : "1025",
        "LoggingLevel" : "ERROR",
        "Description" : "Test"
     },
     {
       "DateandTime" : "1025",
       "LoggingLevel" : "ERROR",
       "Description" : "Test"
     }
   ]

Answer 2

问题是你的字符串不是有效的Json字符串。如果您像这样修改字符串，它应该可以工作：

[
    {
        "DateandTime": "1025",
        "LoggingLevel": "ERROR",
        "Description": "Test"
    },
    {
        "DateandTime": "1025",
        "LoggingLevel": "ERROR",
        "Description": "Test"
    }
]

你还需要调整一下你的代码，因为你得到的结构有点不同。

此外，当您要验证Json文件时，可以使用JSonLint.

从文本文件加载Json对象 - 返回未捕获的SyntaxError：意外的令牌＆＃34; [＆＃34;

2 个答案: