mongo 经过js操做数据库

1. 编写js代码，放到一个js文件中：update_content.js，代码以下：

        db.auth("redlichee","redlichee");

        var cursor = db.sm_content.find({"category":"notice"});

        while(cursor.hasNext())

        {

              var temp = cursor.next();

              db.xf_message_center.update({"content_url_id":temp._id},{$set:{"content":temp.content}});

        }

       cursor = db.sm_content.find({"category":"public"});

        while(cursor.hasNext())

        {

              var temp = cursor.next();

              db.xf_message_center.update({"content_url_id":temp._id},{$set:{"content":temp.content}});

        }

2. 进入mongo/bin目录，执行命令

./mongo  127.0.0.1:27017/redlichee  --shell   /yqy/update_content.js