springboot 使用session实现一个简单的部门管理系统

系统描述

具体实现

Department类代码
其中springboot通过注解的方式实现对参数的验证并用拦截器拦截抛出自定义json的细节可以参考这篇
https://blog.csdn.net/qq_42590163/article/details/104566607

@AllArgsConstructor
@NoArgsConstructor
@Data
public class Department{

    public interface Add extends Default {
    }

    public interface Select extends Default {
    }

    @NotEmpty(message = "id不能为空", groups = Select.class)
    @Null(message = "id必须为空", groups = Add.class)
    private String id;

    @NotEmpty(message = "部门名字不能为空")
    private String departmentName;

    @NotEmpty(message = "部门负责人不能为空")
    private String leader;

    @NotEmpty(message = "上级部门不能为空")
    private String higherDepartmentID;

    @Null(message = "时间必须为空")
    @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss")
    private Date create_time;

    @Null(message = "时间必须为空")
    @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss")
    private Date update_time;
} 

DepartmentController代码

@RestController
public class DepartmentController {

    @PostMapping("/addDepartment")
    public JSONResult addDepartment(@Validated(value = Department.Add.class) @RequestBody Department department,
                                    HttpSession session) {
        Date time = new Date();
        Department department1 = new Department("1","最大的部门！","me！","0",time,time);
        session.setAttribute("最大的部门！",department1);

        department.setId(String.valueOf(UUID.randomUUID()));
        department.setCreate_time(time);
        department.setUpdate_time(time);

        String sessionKey = department.getDepartmentName() + department.getLeader();

        if (!queryDepartmentIsHave(session,sessionKey)) {
            return JSONResult.errorMsg("部门已存在");
        }

        session.setAttribute(sessionKey, department);
        return JSONResult.ok("部门创建成功");
    }

    @PostMapping("/selectAll")
    public JSONResult selectAll(HttpSession session) {
        Enumeration<String> attributeNames = session.getAttributeNames();
        boolean flag = true;
        ArrayList<Department> departmentList = new ArrayList<>();
        while (flag) {
            if (!attributeNames.hasMoreElements()) {
                flag = false;
            }else {
                Department tempDepartment = (Department)session.getAttribute(attributeNames.nextElement());
                departmentList.add(tempDepartment);
            }
        }
        return JSONResult.ok(departmentList);
    }

    @PostMapping("/selectByNameAndLeader")
    public JSONResult selectDepartment(@Validated(value = Department.Select.class) HttpSession session,String departmentName,String leader) {
        String selectParams = departmentName+leader;
        Enumeration<String> attributeNames = session.getAttributeNames();
        boolean flag = true;
        ArrayList<Department> departmentList = new ArrayList<>();
        while (flag) {
            if (!attributeNames.hasMoreElements()) {
                flag = false;
            }else {
                String nextElement = attributeNames.nextElement();
                char[] selectParam = selectParams.toCharArray();
                for (char selectparam:selectParam) {
                    String regex=".*"+selectparam+".*";
                    if(nextElement.matches(regex)){
                        Department tempDepartment = (Department)session.getAttribute(nextElement);
                        departmentList.add(tempDepartment);
                        break;
                    }
                }
            }
        }
        return JSONResult.ok(departmentList);
    }

    private boolean queryDepartmentIsHave(HttpSession session,String sessionKey) {
        boolean flag = true;
        Enumeration<String> attributeNames = session.getAttributeNames();
        while (flag) {
            if (attributeNames.nextElement().equals(sessionKey)) {
                return false;
            }
            if (!attributeNames.hasMoreElements()) {
                flag = false;
            }
        }
        return true;
    }
}

其中模糊查询的实现可以参考https://blog.csdn.net/qq_42590163/article/details/104566869
恩 具体看代码吧我相信你可以看懂的这都是很基础的东西。而且我写的也乱七八糟。。。只是能实现功能罢了。

其中如果你要在test类中测试方法的话其中session需要使用

	@Autowired
	MockHttpSession session;

注入session

源码下载：
链接：https://pan.baidu.com/s/1jr911qyHsPOGQYSwSMPjRA
提取码：5cte