mongodb执行js脚本

执行命令：/data/mongodb/bin/mongo ip:port/db test.js

test.js脚本内容：

var cursor = db.message.find({"packType":4});
while(cursor.hasNext()){
    print('aa');
    var temp = cursor.next();
    printjson(temp);
}
print(db.message.find().count());