Campus second-hand trading network functions:
Second-hand network of schools to provide users with a second-hand trading platform. According to the commodity conditions of middle and high schools and the real secondary market of students - Zengkang, Huang Siyuan, Zuo Feng, Dai Yanbin, Li He and Pang Tao, the main function modules of the system are information classification, information search, information dissemination, User registration login, user communication, management background and so on. In the design of the website, it is divided into two parts: foreground and background design. The front desk is mainly used for providing user registration and login, publishing supply and demand information, checking supply and demand information, sending a small note, and user comments. The main functions of the background are as follows: user Governance, supply and demand information governance, information classification governance, message management. The system can also provide users to publish their own supply and demand information deletion, collection, as well as the user password recovery, user information modification function, users can easily manage their own basic information.
1、User registration
The system allows anonymous access, anonymous access can only view supply and demand information and leave a message in the message board, but can not publish supply and demand information, can not achieve the information push function. If you want to post a message or give someone a note, you must log in. If you are not yet a user of this site, you must register first. Users can log in after registration, the school secondary market users divided into two categories: ordinary users, administrator users. Ordinary users login, you can view the search supply and demand information, supply and demand information released on their own supply and demand information governance, control their own information, change the password, retrieve the password, comment on the supply and demand information, you can also have hobbies items To communicate with their host, send a note. After the administrator user login, you can govern other non-administrator users, governance of all users published supply and demand information, governance of all users posted messages, the management of second-hand goods classification.
 2. release information
Users log in to publish information, information release module includes the supply of information and release of information released two parts. After users log in, they can click "Publish Information" to open the information supply and demand information release page for information operation. In the supply and demand information release page, the user can choose the type of information to be published, select the classification of the transaction item, add the title of the information, the price, and fill in the details such as the number of transactions, the time, the contact information and other information. Click the "Publish Information" button to submit the added information to the data processing page, the data processing page will be submitted to the data stored in the database, and update the database so that users can browse to the updated supply and demand information.
 3. User Panel
User login to enter the user panel to view or modify their personal information. For example, you can view your published information, you can view the unread small note, you can read all the received small note, you can write a small note, you can post a message, you can change the password, modify the exit can log in. In addition, if the user's items have been traded or extraordinary circumstances no longer trade, the user can also "valid" status information to modify the status of "canceled" or "has been traded," so as to avoid unnecessary disturbances, the other in time to non- Effective information to delete, you can also reduce the system burden. If the status of the message is not "valid", it will be deleted by the system within a certain period. If the Remaining Effective Days value is negative, the status will be changed to Expired at the next system update.
 4 information push
Information push technology that is made of paper. As long as the user chooses to accept the push of the information, when the user posts the information, the system will notify the user of the information related to his information as an in-station message. Make the system more intelligent and humane. Or when the user has hobbies for certain items, he can send a note to the user who posted the message for a single communication, which is highly targeted.
5.Information inquiry
Users can query the type of second-hand goods, according to the category to find a small class, and then find the required second-hand information. You can directly search the query, the site supports fuzzy query, the user can directly enter the keywords of the item you want to query, select whether to search by title or by content, click search, the search results will be displayed; you can also advanced search, the user According to their specific requirements for advanced search, the result will be more accurate. According to the query results, you can browse the specific content of supply and demand information. Including: name, specific content, pictures, contacts, contact information and so on.
6. User comments
After users log in, you can express their own opinions on all the second-hand information in the website, and also can make their own suggestions on the construction of the website. The users' comments will be seen by all the users. Post a message by the administrator user consent to governance and recovery. This module is a module of communication between our secondary market and the majority of users. Users can use this secondary trading platform - Zeng Kang, Huang Siyuan, Zuo Feng, Dai Yanbin, Li He, and Pang Tao to submit feedback on second-hand goods The opinions of our management staff can also be feedback on the second-hand market and suggestions, is a platform for communication between users, users and administrators. Due to the problem of time, message feedback this module to do relatively simple.