ifsp.dsi.json.ProcessadorGson.java Source code

Introduction

Here is the source code for ifsp.dsi.json.ProcessadorGson.java

Source

/*
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 */
package ifsp.dsi.json;

import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.Closeable;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.Reader;
import java.io.Writer;

/**
 *
 * @author Doug Modena
 */
public class ProcessadorGson {
    private String arquivo;

    public ProcessadorGson(String arquivo) {
        this.arquivo = arquivo;
    }

    public void gravar(Object obj) {
        GsonBuilder builder = new GsonBuilder();
        Gson gson = builder.setPrettyPrinting().create();

        String json = gson.toJson(obj);

        File file = new File(arquivo);
        Writer fileWriter = null;
        Writer bufferWriter = null;

        try {
            fileWriter = new FileWriter(file);
            bufferWriter = new BufferedWriter(fileWriter);
            bufferWriter.write(json);
        } catch (IOException ex) {
            System.out.println(ex);
        } finally {
            fecharRecursos(bufferWriter);
        }
    }

    public Object ler() {
        GsonBuilder builder = new GsonBuilder();
        Gson gson = builder.create();

        File file = new File(arquivo);
        Reader fileReader = null;
        Reader bufferReader = null;
        Object obj = null;

        try {
            fileReader = new FileReader(file);
            bufferReader = new BufferedReader(fileReader);
            obj = gson.fromJson(bufferReader, Object.class);
        } catch (IOException ex) {
            System.out.println(ex);
        } finally {
            fecharRecursos(bufferReader);
        }

        return obj;
    }

    private void fecharRecursos(Closeable recurso) {
        if (recurso != null) {
            try {
                recurso.close();
            } catch (IOException ex) {
                System.out.println(ex);
            }
        }
    }
}