Springboot增删改查

1）增加/新增

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//新增
    @PostMapping("/save")
    public boolean save(@RequestBody User user){
        return userService.save(user);
    }

2）修改

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//修改
    @PostMapping("/mod")
    public boolean mod(@RequestBody User user){
        return userService.updateById(user);
    }

3）新增或修改

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//新增或修改
    @PostMapping("/saveOrMod")
    public boolean saveOrMod(@RequestBody User user){
        return userService.saveOrUpdate(user);
    }

4）删除

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//删除
    @GetMapping("/delete")
    public boolean delete(Integer id){
        return userService.removeById(id);
    }

5）查找

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//查询（模糊、匹配）
    @PostMapping("/listP")
    public List<User> listP(@RequestBody User user){
        LambdaQueryWrapper<User> queryWrapper = new LambdaQueryWrapper<User>();
        queryWrapper.like(User::getName, user.getName());//模糊匹配
        //queryWrapper.eq(User::getId, user.getId()); 完全匹配
        return userService.list(queryWrapper);
    }