简单的云笔记项目源码(含数据库脚本，适合新手)

【实例简介】简单的云笔记项目，登录、注册、发布云笔记、查询云笔记等基本功能

【实例截图】

【核心代码】

package cn.tedu.userdiary.controller;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.servlet.http.HttpSession;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import cn.tedu.userdiary.entity.Content;
import cn.tedu.userdiary.entity.User;
import cn.tedu.userdiary.service.UserService;
import cn.tedu.userdiary.util.JsonResult;

@RequestMapping("users")
@RestController
public class UserController {
	private final Integer OK=5000;
	@Autowired
	private UserService userService;

 	
	//用户注册
	@PostMapping("reg")
	public JsonResult<Void> getReg(User user){
		System.out.println("UserController.getReg()");
		//用户数据注册
		userService.reg(user);
		return new JsonResult<>(OK);
	}
	
	//用户登录
	@PostMapping("login")
	public JsonResult<Void> login(User user,HttpSession session){
		System.err.println("UserController.login()");
		//用户数据登录
		User data=userService.login(user);
	    session.setAttribute("uid", data.getUid());
	    session.setAttribute("username", data.getUsername());
		return new JsonResult<>(OK);
	}
	
	//用户添加内容
	@PostMapping("add")
	public JsonResult<Void> addcontent(HttpSession session,Content content){
		Integer uid = Integer.valueOf(session.getAttribute("uid").toString());
		
		System.err.println("uid=" uid);
		userService.addcontents(content, uid);
		return  new JsonResult<Void>(OK);
	}
	
	//http://localhost:8080/users/getContent?keyword='55'
	//根据用户输入的关键字匹配查询
	@GetMapping("getContent")
	public JsonResult<List<Content>> content(String keyword,HttpSession session){
		System.err.println("UserController.content()");
		Integer pages;
		List<Content> content=userService.findKeyword(keyword);
		
		session.setAttribute("content", content);
		if(content.size()<=10) {
			return new JsonResult<>(OK,content);
		}
		if(content.size()%10!=0) {
			 pages=content.size()/10 1;
		}else {
			 pages=content.size()/10;
		}
		System.err.println("pages=" pages);
		
		Map<String,List<Content>> contentMap=new HashMap<String, List<Content>>();
		Integer nbs=10;
		Integer index=0;
		for (int j = 0; j < pages; j  ) {
			List<Content> list=new ArrayList();
			contentMap.put("page" j, list);
			for (int i = 0; i < nbs; i  ) {
				if(j 1==pages) {
					System.err.println("这是最后一页");
					if(content.size()%10!=0) {
						System.err.println("最后一页装载");
					     nbs=content.size()%10;
					     System.err.println("nbs=" nbs);
				 }
				}
				Content contents=content.get(index);
				list.add(contents);
				index  ;
			}
		}
	
		session.setAttribute("contentMap", contentMap);
		

		//将总页数存储在第一个数据中
		content.get(0).setPages(pages);
		//默认发送前10条数据
		List<Content> contents=new ArrayList<Content>();
		for (int i = 0; i < 10; i  ) {
			contents.add(content.get(i));
		}
	return new JsonResult<>(OK,contentMap.get("page0"));
	}
	
	//根据发送过来的页数，返回相应的数据
	@GetMapping("paging")
	public JsonResult<List<Content>> paging(Integer page,HttpSession session){
		System.out.println("UserController.paging()");
		Map<String,List<Content>> contentMap=(Map<String,List<Content>>)session.getAttribute("contentMap");
		
		return new JsonResult<>(OK,contentMap.get("page" (page-1)));
		
	}
	
	@PostMapping("getContent")
	public JsonResult<Content> getContents(Integer page,Integer k,HttpSession session){
		System.out.println("UserController.getContent()");
		Map<String,List<Content>> contentMap=(Map<String,List<Content>>)session.getAttribute("contentMap");
		Content content=contentMap.get("page" (page-1)).get(k);
		return new JsonResult<>(OK,content);
	}
}