未捕获的SyntaxError:意外的令牌e

Question

我新收到Uncaught Syntax Error,唯一的补充就是从服务器向客户端发送/检索json数据.如何调查它是什么？以下是截图

有时我在谷歌浏览器中遇到以下错误.

下面有我在收到此错误之前最近更新到我的代码的详细信息.

Java脚本

// Post the topic in the post section
     function  updatePost(xhr, status,jsonData){
                    var args = $.parseJSON(jsonData);

在发送到客户端之前从服务器日志打印的数据

10:20:15,101 INFO  [stdout] (http--127.0.0.1-8080-14)  Printing json data  {

10:20:15,102 INFO  [stdout] (http--127.0.0.1-8080-14)   "topic_username" : "srikanth marni",

10:20:15,102 INFO  [stdout] (http--127.0.0.1-8080-14)   "topic_lstUpdate" : "2012-09-06 10:20:15.025",

10:20:15,103 INFO  [stdout] (http--127.0.0.1-8080-14)   "topic_body" : "Whats up",

10:20:15,104 INFO  [stdout] (http--127.0.0.1-8080-14)   "isValid" : "true"

10:20:15,105 INFO  [stdout] (http--127.0.0.1-8080-14) }

创建Json对象的服务器代码

stringWriter = new StringWriter();
                // jfactory.createJsonGenerator(writer, JsonEncoding.UTF8);
                jGenerator = jfactory.createJsonGenerator(stringWriter);

                jGenerator.useDefaultPrettyPrinter();
                jGenerator.writeStartObject(); // {
                jGenerator.writeStringField("topic_username", loginUserName); // "title" : title
                jGenerator.writeStringField("topic_lstUpdate", topicBean.getTopicVO().getLastUpdatedTimestamp().toString());
                jGenerator.writeStringField("topic_body",              topicBean.getTopicVO().getBody());

                jGenerator.writeStringField("isValid", "true");
                jGenerator.writeEndObject(); // }
                jGenerator.close();
                //String jsonData = topicBean.getTopicVO().getBody();
                request.setAttribute("JSON_DATA", stringWriter.toString());
                System.out.println(" Printing json data  " +stringWriter.toString());

                RequestDispatcher rd = servletContext.getRequestDispatcher("/meteor");

Json Parser在控制台中显示错误

Uncaught SyntaxError: Unexpected token e jquery.js.jsf:16
bF.extend.parseJSON jquery.js.jsf:16
updatePost circle_topic.js.jsf:216
request.onMessage publish_subscribe.js.jsf:56
_f jquery.atmosphere.js.jsf:1975
_invokeFunction jquery.atmosphere.js.jsf:1967
_invokeCallback jquery.atmosphere.js.jsf:2027
AtmosphereRequest.ajaxRequest.onreadystatechange jquery.atmosphere.js.jsf:1438

JSON数据

Logging message from publish_subsrcibe :{
  "topic_username" : "srikanth marni",
  "topic_lstUpdate" : "2012-09-06 11:52:59.966",
  "topic_body" : "testing",
  "isValid" : "true"
} 

Answer 1

这可能有用也可能没用,但是当外部系统调用的处理程序因语法错误而失败时,我也遇到了"意外的令牌E"错误.

function handleSubsystemResult(text) {
   // Chrome reported "Unexpected token E" here
   var something = JSON.parse(text);  
   ...
}

function main() {
   ...
   callExternSubsystem( "externalSubsystemCode()", handleSubsystemResult );
}

外部子系统代码因语法错误而失败.只有在尝试使用JSON.parse()结果时,Chrome才会报告错误.如果在某种处理程序中调用JSON.parse(),我会检查是谁密切调用了该处理程序.