fastjson解析嵌套内部类

平时开发中，可能会遇到调用第三方接口返回json串的情形，有时候数据层级结构太复杂时如果要解析为对象，会需要定义多个。其实没必要，fastjson支持解析嵌套类

public class VideoMsg implements Serializable { private static final long serialVersionUID = -3018234406294471299L; private String touser; private String msgtype; private Video video; class Video { private String media_id; private String thumb_media_id; private String title; private String description; public String getMedia_id() { return media_id; } public void setMedia_id(String media_id) { this.media_id = media_id; } public String getThumb_media_id() { return thumb_media_id; } public void setThumb_media_id(String thumb_media_id) { this.thumb_media_id = thumb_media_id; } public String getTitle() { return title; } public void setTitle(String title) { this.title = title; } public String getDescription() { return description; } public void setDescription(String description) { this.description = description; } } public String getTouser() { return touser; } public void setTouser(String touser) { this.touser = touser; } public String getMsgtype() { return msgtype; } public void setMsgtype(String msgtype) { this.msgtype = msgtype; } public Video getVideo() { return video; } public void setVideo(Video video) { this.video = video; } }

测试类:

@Test public void testJson2(){ String json="{\n" + " \"touser\":\"OPENID\",\n" + " \"msgtype\":\"video\",\n" + " \"video\":\n" + " {\n" + " \"media_id\":\"MEDIA_ID\",\n" + " \"thumb_media_id\":\"MEDIA_ID\",\n" + " \"title\":\"TITLE\",\n" + " \"description\":\"DESCRIPTION\"\n" + " }\n" + "}"; VideoMsg videoMsg = JSON.parseObject(json, VideoMsg.class); System.out.println(JSON.toJSONString(videoMsg)); }

输出：

{"msgtype":"video","touser":"OPENID","video":{"description":"DESCRIPTION","media_id":"MEDIA_ID","thumb_media_id":"MEDIA_ID","title":"TITLE"}}