Question

我必须将json文件解析为文本文件，Sample json文件如下，

{
  "link":"https://xxx.nt",
  "liveChannels":[
                      {
                          "name":"Sony TV",
                          "id":1004,
                          "link":"https://xxx.nt",
                          "decryptionTicket":"https://xxxy.nt",
                          "viewLevel":"Too High",
                              "programs":
                                  {
                                  "totalItems":1,
                                  "programs":[
                                                  {
                                                      "name":"Live or die",
                                                      "id":1000000000,
                                                      "catchUp":["FUN"],
                                                      "startOver":["Again"]
                                                  }
                                              ]
                              }
                  }
              ]
}

我已经使用GSON通过创建以下java类来解析文件。

频道
LiveChannel
程序
子程序

Channel.java

public class channel 
{

    String link = null;
    ArrayList<liveChannels> liveChannels;

    public String getLink() {
        return link;
    }

    public void setLink(String link) {
        this.link = link;
    }

    public ArrayList<liveChannels> getliveChannels() {
        return liveChannels;
    }

    public void setliveChannels(ArrayList<liveChannels> liveChannels) {
        this.liveChannels = liveChannels;
    }

}

livechannel.java

public class liveChannels {

    String name = null;
    int id;
    String link = null;
    String decryptionTicket = null;
    String viewLevel = null;


    public void setName(String name) {
        this.name = name;
    }

    public String getName() {
        return name;
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getLink() {
        return link;
    }

    public void setLink(String link) {
        this.link = link;
    }

    public String getDecryptionTicket() {
        return decryptionTicket;
    }

    public void setDecryptionTicket(String decryptionTicket) {
        this.decryptionTicket = decryptionTicket;
    }

    public String getViewLevel() {
        return viewLevel;
    }

    public void setViewLevel(String viewLevel) {
        this.viewLevel = viewLevel;
    }

}

之后如何从程序开始解析逻辑。

“程序”： { “TOTALITEMS”：1，

program.java

public class programs {

    ArrayList<sub_programs> sub_programs;

    int totalItems;

    public int getTotalItems() {
        return totalItems;
    }

    public void setTotalItems(int totalItems) {
        this.totalItems = totalItems;
    }

    public ArrayList<sub_programs> getProgramsDetails() {
        return sub_programs;
    }

    public void setProgramsDetails(ArrayList<sub_programs> sub_programs) {
        this.sub_programs = sub_programs;
    }

}

sub_program.java

public class sub_programs {

    String name = null;
    int id;
    String catchUp = null;
    String startOver = null;


    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getCatchUp() {
        return catchUp;
    }

    public void setCatchUp(String catchUp) {
        this.catchUp = catchUp;
    }

    public String getStartOver() {
        return startOver;
    }

    public void setStartOver(String startOver) {
        this.startOver = startOver;
    }

}

主要看起来如下，

    public static void main(String[] args) throws IOException 
    {

        Gson gson = new Gson();

        String contents = FileUtils.readFileToString(
                new File("C:/sample.json"), "UTF-8");

        channel channelHeader = gson.fromJson(contents, channel.class);

        System.out.println("Channel Information --->");

        System.out.println("Channel Link: " + channelHeader.getLink());

        ArrayList<liveChannels> liveChannels = channelHeader.getliveChannels();

        for (int i = 0; i < liveChannels.size(); i++) {
            System.out.println("liveChannels Detail --->");
            liveChannels liveChannelsDetail = liveChannels.get(i);
            System.out.println("Channel Name : " + liveChannelsDetail.getName());
            System.out.println("Channel ID : " + liveChannelsDetail.getId());
            System.out.println("Channel Description Ticket: " + liveChannelsDetail.getDecryptionTicket());
            System.out.println("Channel View Level : " + liveChannelsDetail.getViewLevel());
        }

    }

}

任何人都可以帮助获得从livechannel类开始解析程序的逻辑。

由于程序不是数组列表，还有什么方法可以获得值。

Answer 1

您遗失了shutil.copy班级中的orig_file = "first.dat" copy_file = "second.dat" with open(orig_file, "rb") as f1: with open(copy_file, "wb") as f2: # Copy byte by byte byte = f1.read(1) while byte != "": f2.write(byte) byte = f1.read(1)个对象。

programs

然后在liveChannels课程中，您需要将public class liveChannels { String name = null; int id; String link = null; String decryptionTicket = null; String viewLevel = null; programs programs; public void setPrograms (programs programs) { this.programs = programs; } public programs getPrograms() { return programs; } ... }字段重命名为programs

sub_programs

顺便说一下，你的类命名不符合Java标准，被认为是不好的做法。你的课程应该这样命名：

programs

请注意，这不会影响GSON解析文档的能力，因为GSON更关心属性名称而不是字段的实际类名。

使用GSON解析多嵌套json

1 个答案: