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fastjson List String JSONArray 转换

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fastjson List String JSONArray 转换三种转换方法 String courseData List courseTable courseTable JSON parseObject courseData new TypeReferenc courseTable JSON parseArray courseData Course class courseTable

三种转换方法

String courseData = "...";

List courseTable;

courseTable = JSON.parseObject(courseData, new TypeReference>() {});

courseTable = JSON.parseArray(courseData, Course.class);

courseTable = JSON.parseArray(courseData).toJavaList(Course.class);

System.out.println(courseTable);

其中，第三种方法：

Code

// List

List  courseTable = new LinkedList<>();

courseTable.add(new Course("1", "Java", 30, 3.0));

courseTable.add(new Course("2", "JavaScript", 25, 2.5));

System.out.println(courseTable);



// List -> String

String str = JSON.toJSONString(courseTable);

System.out.println(str);



// String -> JSONArray

JSONArray objects = JSON.parseArray(str);

System.out.println(objects);



// JSONArray -> List

List courses = objects.toJavaList(Course.class);

System.out.println(courses);

输出

[{"course":"Java","credit":3.0,"id":"1","number":30}, {"course":"JavaScript","credit":2.5,"id":"2","number":25}]

[{"course":"Java","credit":3.0,"id":"1","number":30},{"course":"JavaScript","credit":2.5,"id":"2","number":25}]

[{"number":30,"course":"Java","id":"1","credit":3.0},{"number":25,"course":"JavaScript","id":"2","credit":2.5}]

[{"course":"Java","credit":3.0,"id":"1","number":30}, {"course":"JavaScript","credit":2.5,"id":"2","number":25}]
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