小编Arc*_*aye的帖子

我正在尝试使用mongoimport命令导入json文档,并尝试了所有可能的方法,但它给出了低于错误.Plz告诉我,我在这里做错了什么.我已经给出了json doc的完整路径.我想导入具有800多条记录的大文档,但因为它失败了所以目前我的students.json包含简单的一行{name:"Archana"}但是即使这样也失败了.

C:\data\db>mongo
2016-02-02T17:48:44.788+0530 I CONTROL  [main] Hotfix KB2731284 or later update is installed, no need to zero-out data
MongoDB shell version: 3.2.1
connecting to: test
> show collections
names
students
> mondoimport -d test -c students students.json
2016-02-02T17:50:21.001+0530 E QUERY    [thread1] SyntaxError: missing ; before statement @(shell):1:15

> mondoimport -d test -c students < students.json
2016-02-02T17:50:25.840+0530 E QUERY    [thread1] SyntaxError: missing ; before statement @(shell):1:15

> mondoimport -d test -c students < file students.json
2016-02-02T17:50:31.233+0530 E QUERY    [thread1] SyntaxError: …

package singleton;

public class SingletonClass {

    private static SingletonClass singleton = null;

    private SingletonClass() {
    }

    static boolean stopThread = true;

    //approach 1 which fails in multithereaded env
    /*public static SingletonClass getInstance(){
        if(null == singleton){
            try {
                if(stopThread){
                    stopThread = false;
                    Thread.sleep(1000);
                }
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            singleton = new SingletonClass();
        }
        return singleton;
    }*/

    //approach 2 which works
    //method is synchronized
   /* public static synchronized SingletonClass getInstance(){
        if(null == singleton){
                try {
                    if(stopThread){
                        stopThread = false; …