java如何实现把星期一 第1~2节 信息楼A103 星期四 第1~2节 讲堂群203 星期三 第1~2节 信息楼A205 星期三 第3~4节 信息楼A305 星期一 第3~4节 信息楼A105 星期二 第1~2节 信息楼A205转换为JSON数据{ "schedule": [ { "day": "星期一", "courses": [ { "time": "第1~2节", "location": "信息楼A103" }, { "time": "第3~4节", "location": "信息楼A105" } ] }, { "day": "星期二", "courses": [ { "time": "第1~2节", "location": "信息楼A205" } ] }, { "day": "星期三", "courses": [ { "time": "第1~2节", "location": "信息楼A205" }, { "time": "第3~4节", "location": "信息楼A305" } ] }, { "day": "星期四", "courses": [ { "time": "第1~2节", "location": "讲堂群203" } ] } ]}

可以使用Java中的JSONObject和JSONArray进行转换。

首先，将课程信息存储在一个List中：

List<Map<String, Object>> courses = new ArrayList<>();
Map<String, Object> course1 = new HashMap<>();
course1.put("day", "星期一");
course1.put("time", "第1~2节");
course1.put("location", "信息楼A103");
courses.add(course1);

Map<String, Object> course2 = new HashMap<>();
course2.put("day", "星期四");
course2.put("time", "第1~2节");
course2.put("location", "讲堂群203");
courses.add(course2);

Map<String, Object> course3 = new HashMap<>();
course3.put("day", "星期三");
course3.put("time", "第1~2节");
course3.put("location", "信息楼A205");
courses.add(course3);

Map<String, Object> course4 = new HashMap<>();
course4.put("day", "星期三");
course4.put("time", "第3~4节");
course4.put("location", "信息楼A305");
courses.add(course4);

Map<String, Object> course5 = new HashMap<>();
course5.put("day", "星期一");
course5.put("time", "第3~4节");
course5.put("location", "信息楼A105");
courses.add(course5);

Map<String, Object> course6 = new HashMap<>();
course6.put("day", "星期二");
course6.put("time", "第1~2节");
course6.put("location", "信息楼A205");
courses.add(course6);

然后，将List转换为JSONObject：

JSONObject schedule = new JSONObject();
JSONArray scheduleArray = new JSONArray();

for (String day : new String[]{"星期一", "星期二", "星期三", "星期四", "星期五", "星期六", "星期日"}) {
    JSONArray coursesArray = new JSONArray();
    for (Map<String, Object> course : courses) {
        if (course.get("day").equals(day)) {
            JSONObject courseObject = new JSONObject();
            courseObject.put("time", course.get("time"));
            courseObject.put("location", course.get("location"));
            coursesArray.put(courseObject);
        }
    }
    JSONObject dayObject = new JSONObject();
    dayObject.put("day", day);
    dayObject.put("courses", coursesArray);
    scheduleArray.put(dayObject);
}

schedule.put("schedule", scheduleArray);

最后，将JSONObject格式化为JSON字符串：

String jsonString = schedule.toString(4);

输出的JSON字符串为：

{
    "schedule": [
        {
            "day": "星期一",
            "courses": [
                {
                    "time": "第1~2节",
                    "location": "信息楼A103"
                },
                {
                    "time": "第3~4节",
                    "location": "信息楼A105"
                }
            ]
        },
        {
            "day": "星期二",
            "courses": [
                {
                    "time": "第1~2节",
                    "location": "信息楼A205"
                }
            ]
        },
        {
            "day": "星期三",
            "courses": [
                {
                    "time": "第1~2节",
                    "location": "信息楼A205"
                },
                {
                    "time": "第3~4节",
                    "location": "信息楼A305"
                }
            ]
        },
        {
            "day": "星期四",
            "courses": [
                {
                    "time": "第1~2节",
                    "location": "讲堂群203"
                }
            ]
        },
        {
            "day": "星期五",
            "courses": []
        },
        {
            "day": "星期六",
            "courses": []
        },
        {
            "day": "星期日",
            "courses": []
        }
    ]
}