SpingBoot上手项目：黑马程序员SpringBoot3+Vue3全栈开发代码复现

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一、环境配置 推荐使用jdk-18版本 meaven3.5.4版本 二、创建SpringBoot项目 选择maven项目，加入Spring Web和lombok插件（省略写set,get方法） 配置数据库文件

微信图片_20250619170633_8.png

微信图片_20250619170647_9.png 三、建立软件包

微信图片_20250619170930_10.png pojo中存放实体类，service中存放要实现的方法，serviceimply中存放对内部类service方法的实现，interceptors中存放拦截器防止登陆时未登陆就可以看到后台内容，validation中存放对数据的自定义校验，mapper中存放对数据库操作的sql语句，exception中存放对全局的错误校验 三、底层逻辑分析 先写controller层内容传到service,再将service层直接传输到mapper层，使用sql语句对数据库进行处理 四、主要代码复现

package com.itheima.controller;

import com.itheima.pojo.Article;
import com.itheima.pojo.PageBean;
import com.itheima.pojo.Result;
import com.itheima.service.ArticleService;
import com.itheima.utils.JwtUtil;
import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletResponse;
import org.apache.ibatis.annotations.Delete;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.*;

import java.util.Map;

@RestController
@RequestMapping("/article")
@CrossOrigin
public class ArticleController {

    @Autowired
    private ArticleService articleService;

    @PostMapping
    public Result add(@RequestBody @Validated Article article) {        articleService.add(article);
        return Result.success();
    }

      @GetMapping
    public Result<PageBean<Article>> list(
            Integer pageNum,
            Integer pageSize,
            @RequestParam(required = false) Integer categoryId,
            @RequestParam(required = false) String state
    ){
        PageBean<Article> pb=articleService.list(pageNum,pageSize,categoryId,state);
        return Result.success(pb);
    }

    @PutMapping
    public Result update(@RequestBody @Validated Article article) {
        articleService.update(article);
        return Result.success();
    }

    @DeleteMapping
    public Result delete(Integer id) {
        articleService.delete(id);
        return Result.success();
    }
}

package com.itheima.controller;

import com.itheima.pojo.Category;
import com.itheima.pojo.Result;
import com.itheima.service.CategoryService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.*;

import java.util.List;

@RestController
@RequestMapping("/category")
public class CategoryController {
    @Autowired
    private CategoryService categoryService;

    @PostMapping
    public Result add(@RequestBody @Validated(Category.Add.class) Category category) {
        categoryService.add(category);
        return Result.success();
    }

    @GetMapping
    public Result<List<Category>> List() {
        List<Category> cs=categoryService.list();
        return Result.success(cs);
    }

    @GetMapping("/detail")
    public Result<Category> detail(Integer id){
        Category c=categoryService.findById(id);
        return Result.success(c);
    }

    @PutMapping
    public Result update(@RequestBody @Validated(Category.Update.class) Category category) {
        categoryService.update(category);
        return Result.success();
    }

    @DeleteMapping
    public Result delete(Integer id) {
        categoryService.delete(id);
        return Result.success();
    }
}

package com.itheima.controller;

import com.itheima.pojo.Result;
import com.itheima.pojo.User;
import com.itheima.service.UserService;
import com.itheima.utils.JwtUtil;
import com.itheima.utils.Md5Util;
import com.itheima.utils.ThreadLocalUtil;
import jakarta.validation.constraints.Pattern;
import org.hibernate.validator.constraints.URL;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.core.ValueOperations;
import org.springframework.util.StringUtils;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.*;

import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;

@RestController
@RequestMapping("/user")
@Validated
public class UserController {
    @Autowired
    private UserService userService;
    @Autowired
    private StringRedisTemplate stringRedisTemplate;

    @PostMapping("/register")
    public Result register(@Pattern(regexp = "^\S{5,16}$") String username, @Pattern(regexp = "^\S{5,16}$") String password) {
        User u = userService.findByUserName(username);
        if (u == null) {
            userService.register(username, password);
            return Result.success();
        } else {
            return Result.error("用户名已被占用");
        }
    }

    @PostMapping("/login")
    public Result<String> login(@Pattern(regexp = "^\S{5,16}$") String username, @Pattern(regexp = "^\S{5,16}$") String password) {
        User loginuser = userService.findByUserName(username);
        if (loginuser == null) {
            return Result.error("用户名错误");
        }
        if(Md5Util.getMD5String(password).equals(loginuser.getPassword())) {
            Map<String, Object> claims = new HashMap<>();
            claims.put("id", loginuser.getId());
            claims.put("username", loginuser.getUsername());
            String token=JwtUtil.genToken(claims);
            ValueOperations<String,String> operations=stringRedisTemplate.opsForValue();
            operations.set(token,token,12, TimeUnit.HOURS);
            return Result.success(token);
        }
        return Result.error("密码错误");
    }

    @GetMapping("/userInfo")
    public Result<User> userInfo(/*@RequestHeader(name = "Authorization") String token*/) {
//        Map<String, Object> map = JwtUtil.parseToken(token);
//        String username=(String) map.get("username");
        Map<String, Object> map = ThreadLocalUtil.get();
        String username = (String) map.get("username");
        User user=userService.findByUserName(username);
        return Result.success(user);
    }
    @PutMapping("/update")
    public Result update(@RequestBody @Validated User user) {
        userService.update(user);
        return Result.success();
    }

    @PatchMapping("/updateAvatar")
    public Result updateAvatar(@RequestParam @URL String avatarUrl) {
        userService.updateAvatar(avatarUrl);
        return Result.success();
    }

    @PatchMapping("/updatePwd")
    public Result updatePwd(@RequestBody Map<String, String> params,@RequestHeader("Authorization") String token) {
        String oldPwd = params.get("old_pwd");
        String newPwd = params.get("new_pwd");
        String rePwd = params.get("re_pwd");
        if (!StringUtils.hasLength(oldPwd) || !StringUtils.hasLength(newPwd) || !StringUtils.hasLength(rePwd)) {
            return Result.error("缺少必要的参数");
        }
        Map<String,Object> map = ThreadLocalUtil.get();
        String username = (String) map.get("username");
        User loginUser=userService.findByUserName(username);
        if(!loginUser.getPassword().equals(Md5Util.getMD5String(oldPwd))) {
            return Result.error("原密码填写不正确");
        }if (!rePwd.equals(newPwd)){
            return Result.error("两次填写密码不一样");
        }
        userService.updatePwd(newPwd);
        ValueOperations<String,String> operations=stringRedisTemplate.opsForValue();
        operations.getOperations().delete(token);
        return Result.success();
    }
}

package com.itheima.service;


import com.itheima.pojo.Article;
import com.itheima.pojo.PageBean;

public interface ArticleService {
    void add(Article article);

    PageBean<Article> list(Integer pageNum, Integer pageSize, Integer categoryId, String state);

    void update(Article article);

    void delete(Integer article);
}

package com.itheima.service;

import com.itheima.pojo.Category;

import java.util.List;

public interface CategoryService {
    void add(Category category);

    List<Category> list();

    Category findById(Integer id);

    void update(Category category);

    void delete(Integer id);
}

package com.itheima.service;

import com.itheima.pojo.User;

public interface UserService {

    User findByUserName(String username);

    void register(String username, String password);

    void update(User user);

    void updateAvatar(String avatarUrl);

    void updatePwd(String pwd);
}

五、综合心得体会 测试可以使用postman（30天的试用期），或者使用Apipost(完全免费） 在初学SpringBoot时还是有些难度，需要静下心来去理解清楚每个注解的意思，其次，感谢瞿小白的测试，省去大量繁琐步骤

github链接：github.com/3508446770/…

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