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Ich versuche, meinen Code auszuführen, und ich bekomme immer Fehler. Die JSON-Datei, die ich lese, ist völlig in Ordnung mit den Schlüsseln und Werten. Und die, die ich schreibe, ist nur eine JSON-Datei mit "{}" und das war's. Bitte hilf mir. Es ist der einzige Fehler, den ich bekomme.JSON-Fehler beim Schreiben auf
Hauptklasse
import java.io.Serializable;
class LibraryOfMovieDescriptions implements Serializable {
public static void main(String[] args){
MovieLibrary movieLibrary;
movieLibrary = new MovieLibrary("movies.json");
movieLibrary.toJsonFile("movies2.json");
}
}
MovieDescription Klasse
import org.json.JSONException;
import org.json.JSONObject;
import org.json.JSONArray;
import java.io.Serializable;
public class MovieDescription implements Serializable {
private String title;
private String rating;
private String release;
private String runtime;
private String plot;
private String filename;
private String genre;
private String actors;
public JSONObject toJSONObject() throws JSONException {
JSONObject obj = new JSONObject();
obj.put("Title", title);
obj.put("Rated", rating);
obj.put("Released", release);
obj.put("Runtime", runtime);
obj.put("Plot", plot);
obj.put("Filename", filename);
JSONArray a = new JSONArray();
String[] sArray = this.actors.split(" , ");
for(int i = 0; i < sArray.length; i++){
a.put(i);
}
obj.put("Actors", a);
JSONArray g = new JSONArray();
String[] gArray = this.genre.split(" , ");
for(int i = 0; i < gArray.length; i++){
g.put(i);
}
obj.put("Genre", g);
return obj;
}
public MovieDescription(JSONObject jsonObj) throws JSONException{
this.title = jsonObj.getString("Title");
this.rating = jsonObj.getString("Rated");
this.release = jsonObj.getString("Released");
this.plot = jsonObj.getString("Plot");
this.runtime = jsonObj.getString("Runtime");
this.filename = jsonObj.getString("Filename");
JSONArray g = jsonObj.getJSONArray("Genre");
for(int i = 0; i < g.length(); i++){
this.genre += g.get(i) + ", ";
}
JSONArray a = jsonObj.getJSONArray("Actors");
for(int i = 0; i < a.length(); i++){
this.actors += a.get(i) + ", ";
}
}
public MovieDescription(){
title = " ";
rating = " ";
release = " ";
runtime = " ";
plot = " ";
filename = " ";
genre = " ";
actors = " ";
}
public MovieDescription(String title, String rating, String release, String runtime, String plot, String filename,
String genre, String actors){
this.title = title;
this.rating = rating;
this.release = release;
this.runtime = runtime;
this.plot = plot;
this.filename = filename;
this.genre = genre;
this.actors = actors;
}
public void setTitle(String title){
this.title = title;
}
public String getTitle(){
return title;
}
public void setRating(String rating){
this.rating = rating;
}
public String getRating(){
return rating;
}
public void setRelease(String release){
this.release = release;
}
public String getRelease(){
return this.release;
}
public void setRuntime(String runtime){
this.runtime = runtime;
}
public String getRuntime(){
return runtime;
}
public void setPlot(String plot){
this.plot = plot;
}
public String getPlot(){
return plot;
}
public void setFilename(String filename){
this.filename = filename;
}
public String getFilename(){
return filename;
}
public void setGenre(String genre){
this.genre = genre;
}
public String getGenre(){
return genre;
}
public void setActors(String actors){
this.actors = actors;
}
public String getActors(){
return actors;
}
public String toString(){
String string = ("Title: " + title + "\n" + "Rating: " + rating + "\n" + "Released: " + release + "\n" +
"Runtime: " + runtime + "\n" + "Plot: " + plot + "\n" + "Filename: " + filename + "\n" + "Genre: " + genre
+ "\n" + "Actors: " + actors + "\n");
return string;
}
}
MovieLibrary Klasse
import org.json.JSONObject;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import org.json.JSONTokener;
import java.io.Serializable;
import java.io.ObjectOutputStream;
public class MovieLibrary implements Serializable {
private List<MovieDescription> movieLib = new ArrayList<MovieDescription>();
private int arraySize;
public MovieLibrary(){
arraySize = 0;
}
public boolean isEmpty(){
return arraySize == 0;
}
public MovieDescription get(String aTitle){
int i = indexOf(aTitle);
if(i == -1){
return null;
}
return movieLib.get(i);
}
public boolean add(MovieDescription aClip){
movieLib.add(aClip);
arraySize++;
return true;
}
public boolean remove(String aTitle){
int i = indexOf(aTitle);
if(i != -1){
movieLib.remove(i);
arraySize--;
}
return true;
}
public String[] getTitles(){
String[] s = new String[movieLib.size()];
for(int i = 0; i < movieLib.size(); i++){
s[i] = movieLib.get(i).getTitle();
}
return s;
}
private int indexOf(String aTitle){
for(int i = 0; i < movieLib.size(); i++)
if(((movieLib.get(i)).getTitle()).equals(aTitle)){
return i;
}
return -1;
}
public MovieLibrary(String jsonFile){
FileInputStream in = null;
JSONObject jsonObj = null;
String[] titles;
try{
in = new FileInputStream(jsonFile);
jsonObj = new JSONObject(new JSONTokener(in));
titles = JSONObject.getNames(jsonObj);
System.out.println("Adding Movies...");
for(int i = 0; i < titles.length; i++){
JSONObject temp = jsonObj.getJSONObject(titles[i]);
MovieDescription movies = new MovieDescription(temp);
movieLib.add(movies);
}
System.out.println(this.getTitles());
in.close();
}
catch(Exception e){
e.printStackTrace();
if(in != null){
try{
in.close();
}
catch(IOException z){
z.printStackTrace();
System.exit(0);;
}
}
}
}
public void toJsonFile(String jsonFileName){
JSONObject jsonObj = new JSONObject();
ObjectOutputStream out = null;
try{
for(int i = 0; i < movieLib.size(); i++)
jsonObj.put(movieLib.get(i).getTitle(),movieLib.get(i).toJSONObject());
out = new ObjectOutputStream(new FileOutputStream(jsonFileName));
out.writeObject(jsonObj.toString());
out.close();
}
catch(Exception e){
e.printStackTrace();
if(out != null){
try{
out.close();
}
catch(IOException z){
z.printStackTrace();
System.exit(0);
}
}
}
}
}
Und hier ist der Fehler Ich erhalte:
Hinzufügen Filme ...
[Ljava.lang.String; @ 4554617c
Auch nachdem ich das Programm und überprüfen Sie meine "movies2.json" (die schreiben ich versuche laufen to) die Datei dreht sich darum.
weird stuff:
