1
package com.itheima.pojo;
2

3
import lombok.AllArgsConstructor;
4
import lombok.Data;
5
import lombok.NoArgsConstructor;
6
import java.time.LocalDateTime;
7

8
@Data
9
@NoArgsConstructor
10
@AllArgsConstructor
11
public class User {
12
    private Integer id;
13
    private String username;
14
    private String password;
15
    private String name;
16
    private Integer age;
17
    private LocalDateTime updateTime;
18
}

1
import cn.hutool.core.io.IoUtil;
2
import cn.hutool.json.JSONConfig;
3
import cn.hutool.json.JSONUtil;
4
import com.itheima.pojo.User;
5
import org.springframework.web.bind.annotation.RequestMapping;
6
import org.springframework.web.bind.annotation.RestController;
7
import java.io.InputStream;
8
import java.nio.charset.StandardCharsets;
9
import java.time.LocalDateTime;
10
import java.time.format.DateTimeFormatter;
11
import java.util.ArrayList;
12
import java.util.List;
13
import java.util.stream.Collectors;
14

15
@RestController
16
public class UserController {
17
    @RequestMapping("/list")
18
    public String list(){
19
        //1.加载并读取文件
20
        InputStream in = this.getClass().getClassLoader().getResourceAsStream("user.txt");
21
        ArrayList<String> lines = IoUtil.readLines(in, StandardCharsets.UTF_8, new ArrayList<>());
22
        //2.解析数据，封装成User对象
23
        List<User> userList = lines.stream().map(line -> {
24
            String[] parts = line.split(",");
25
            return new User(
26
                Integer.parseInt(parts[0]), parts[1], parts[2],
27
                parts[3], Integer.parseInt(parts[4]),
28
                LocalDateTime.parse(parts[5], DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"))
29
            );
30
        }).collect(Collectors.toList());
31
        //3.响应JSON数据
32
        return JSONUtil.toJsonStr(userList, JSONConfig.create().setDateFormat("yyyy-MM-dd HH:mm:ss"));
33
    }
34
}