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    <title>excel to json on Conholdate Blog</title>
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      <title>Conversione da Excel a JSON in Java</title>
      <link>https://blog-qa.conholdate.com/it/total/excel-to-json-conversion-in-java/</link>
      <pubDate>Tue, 15 Sep 2026 20:32:21 +0000</pubDate>
      
      <guid>https://blog-qa.conholdate.com/it/total/excel-to-json-conversion-in-java/</guid>
      <description>Scopri come eseguire la conversione da Excel a JSON in Java utilizzando Conholdate.Total for Java SDK. Segui la configurazione passo‑passo, la panoramica del codice e i consigli di configurazione.</description>
      <content:encoded><![CDATA[<p>La conversione di fogli di calcolo Excel in <a href="https://docs.fileformat.com/web/json/">JSON</a> è una necessità frequente quando si costruiscono pipeline di scambio dati o si alimentano API. <a href="https://products.conholdate.com/total/java/">Conholdate.Total for Java</a> è un SDK potente che semplifica questo compito per gli sviluppatori Java. In questa guida imparerai come configurare la libreria, eseguire un&rsquo;implementazione completa e perfezionare le opzioni di conversione per soddisfare le esigenze del tuo progetto.</p>
<h2 id="prerequisiti-e-configurazione-per-conholdatetotal-for-java">Prerequisiti e Configurazione per Conholdate.Total for Java</h2>
<p>Prima di iniziare, assicurati di avere:</p>
<ul>
<li>Java 17 o versioni successive installate.</li>
<li>Maven 3.6+ per la gestione delle dipendenze.</li>
<li>Un file Excel (<code>.xlsx</code>) che desideri convertire.</li>
</ul>
<p>Aggiungi il repository Maven di Conholdate.Total e la dipendenza al tuo <code>pom.xml</code>:</p>
<div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-xml" data-lang="xml"><span style="display:flex;"><span><span style="color:#f92672">&lt;repositories&gt;</span>
</span></span><span style="display:flex;"><span>    <span style="color:#f92672">&lt;repository&gt;</span>
</span></span><span style="display:flex;"><span>        <span style="color:#f92672">&lt;id&gt;</span>conholdate-repo<span style="color:#f92672">&lt;/id&gt;</span>
</span></span><span style="display:flex;"><span>        <span style="color:#f92672">&lt;name&gt;</span>Conholdate Maven Repository<span style="color:#f92672">&lt;/name&gt;</span>
</span></span><span style="display:flex;"><span>        <span style="color:#f92672">&lt;url&gt;</span>https://repository.conholdate.com/repo/<span style="color:#f92672">&lt;/url&gt;</span>
</span></span><span style="display:flex;"><span>    <span style="color:#f92672">&lt;/repository&gt;</span>
</span></span><span style="display:flex;"><span><span style="color:#f92672">&lt;/repositories&gt;</span>
</span></span><span style="display:flex;"><span>
</span></span><span style="display:flex;"><span><span style="color:#f92672">&lt;dependency&gt;</span>
</span></span><span style="display:flex;"><span>    <span style="color:#f92672">&lt;groupId&gt;</span>com.conholdate<span style="color:#f92672">&lt;/groupId&gt;</span>
</span></span><span style="display:flex;"><span>    <span style="color:#f92672">&lt;artifactId&gt;</span>conholdate-total<span style="color:#f92672">&lt;/artifactId&gt;</span>
</span></span><span style="display:flex;"><span>    <span style="color:#f92672">&lt;version&gt;</span>24.9<span style="color:#f92672">&lt;/version&gt;</span>
</span></span><span style="display:flex;"><span>    <span style="color:#f92672">&lt;type&gt;</span>pom<span style="color:#f92672">&lt;/type&gt;</span>
</span></span><span style="display:flex;"><span><span style="color:#f92672">&lt;/dependency&gt;</span>
</span></span></code></pre></div><p>Puoi anche scaricare gli ultimi JAR direttamente dalla <a href="https://releases.conholdate.com/total/java/">pagina di download</a>. Con l&rsquo;SDK installato, sei pronto per avviare la conversione da Excel a JSON in Java.</p>
<h2 id="conversione-da-excel-a-json-in-java-guida-passo-passo">Conversione da Excel a JSON in Java: Guida passo passo</h2>
<h3 id="passo-1-carica-il-documento-excel-di-origine">Passo 1: Carica il documento Excel di origine</h3>
<p>Innanzitutto, specifica il percorso del file <a href="https://docs.fileformat.com/spreadsheet/xlsx/">XLSX</a> di origine e crea un&rsquo;istanza <code>Conversion</code>. Il blocco <code>try‑with‑resources</code> garantisce che l&rsquo;oggetto di conversione venga eliminato correttamente.</p>
<div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-java" data-lang="java"><span style="display:flex;"><span>String inputFile <span style="color:#f92672">=</span> <span style="color:#e6db74">&#34;sample.xlsx&#34;</span><span style="color:#f92672">;</span>
</span></span><span style="display:flex;"><span><span style="color:#66d9ef">try</span> <span style="color:#f92672">(</span>Conversion conversion <span style="color:#f92672">=</span> <span style="color:#66d9ef">new</span> Conversion<span style="color:#f92672">(</span>inputFile<span style="color:#f92672">))</span> <span style="color:#f92672">{</span>
</span></span><span style="display:flex;"><span>    <span style="color:#75715e">// conversion object ready
</span></span></span><span style="display:flex;"><span><span style="color:#75715e"></span><span style="color:#f92672">}</span>
</span></span></code></pre></div><h3 id="passo-2-configura-le-opzioni-di-conversione-json">Passo 2: Configura le opzioni di conversione JSON</h3>
<p>Crea un oggetto <code>JsonConvertOptions</code> e regola le impostazioni come la stampa formattata (pretty‑print), l&rsquo;inclusione dell&rsquo;intestazione, i formati personalizzati per data e numero e la dimensione del batch. Queste opzioni controllano come la conversione da Excel a JSON in Java influisce sull&rsquo;output finale.</p>
<div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-java" data-lang="java"><span style="display:flex;"><span>JsonConvertOptions jsonOptions <span style="color:#f92672">=</span> <span style="color:#66d9ef">new</span> JsonConvertOptions<span style="color:#f92672">();</span>
</span></span><span style="display:flex;"><span>jsonOptions<span style="color:#f92672">.</span><span style="color:#a6e22e">setPrettyPrint</span><span style="color:#f92672">(</span><span style="color:#66d9ef">true</span><span style="color:#f92672">);</span>
</span></span><span style="display:flex;"><span>jsonOptions<span style="color:#f92672">.</span><span style="color:#a6e22e">setIncludeHeaders</span><span style="color:#f92672">(</span><span style="color:#66d9ef">true</span><span style="color:#f92672">);</span>
</span></span><span style="display:flex;"><span>jsonOptions<span style="color:#f92672">.</span><span style="color:#a6e22e">setDateFormat</span><span style="color:#f92672">(</span>JsonConvertOptions<span style="color:#f92672">.</span><span style="color:#a6e22e">DateFormat</span><span style="color:#f92672">.</span><span style="color:#a6e22e">CUSTOM</span><span style="color:#f92672">);</span>
</span></span><span style="display:flex;"><span>jsonOptions<span style="color:#f92672">.</span><span style="color:#a6e22e">setCustomDateFormat</span><span style="color:#f92672">(</span><span style="color:#e6db74">&#34;yyyy-MM-dd&#34;</span><span style="color:#f92672">);</span>
</span></span><span style="display:flex;"><span>jsonOptions<span style="color:#f92672">.</span><span style="color:#a6e22e">setNumberFormat</span><span style="color:#f92672">(</span>JsonConvertOptions<span style="color:#f92672">.</span><span style="color:#a6e22e">NumberFormat</span><span style="color:#f92672">.</span><span style="color:#a6e22e">CUSTOM</span><span style="color:#f92672">);</span>
</span></span><span style="display:flex;"><span>jsonOptions<span style="color:#f92672">.</span><span style="color:#a6e22e">setCustomNumberFormat</span><span style="color:#f92672">(</span><span style="color:#e6db74">&#34;#.##&#34;</span><span style="color:#f92672">);</span>
</span></span><span style="display:flex;"><span>jsonOptions<span style="color:#f92672">.</span><span style="color:#a6e22e">setRowsPerBatch</span><span style="color:#f92672">(</span>5000<span style="color:#f92672">);</span>
</span></span></code></pre></div><h3 id="passo-3-esegui-la-conversione">Passo 3: Esegui la conversione</h3>
<p>Fornisci il nome del file JSON di destinazione e invoca il metodo <code>convert</code>. L&rsquo;SDK gestisce la trasformazione internamente.</p>
<div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-java" data-lang="java"><span style="display:flex;"><span>String outputFile <span style="color:#f92672">=</span> <span style="color:#e6db74">&#34;sample.json&#34;</span><span style="color:#f92672">;</span>
</span></span><span style="display:flex;"><span>conversion<span style="color:#f92672">.</span><span style="color:#a6e22e">convert</span><span style="color:#f92672">(</span>outputFile<span style="color:#f92672">,</span> jsonOptions<span style="color:#f92672">);</span>
</span></span></code></pre></div><h3 id="passaggio-4-gestire-il-risultato-e-la-pulizia">Passaggio 4: Gestire il risultato e la pulizia</h3>
<p>Dopo la conversione, visualizza un messaggio di conferma. Eventuali eccezioni vengono catturate e stampate nella console.</p>
<div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-java" data-lang="java"><span style="display:flex;"><span>System<span style="color:#f92672">.</span><span style="color:#a6e22e">out</span><span style="color:#f92672">.</span><span style="color:#a6e22e">println</span><span style="color:#f92672">(</span><span style="color:#e6db74">&#34;Conversion completed successfully. JSON saved to: &#34;</span> <span style="color:#f92672">+</span> outputFile<span style="color:#f92672">);</span>
</span></span><span style="display:flex;"><span><span style="color:#f92672">}</span> <span style="color:#66d9ef">catch</span> <span style="color:#f92672">(</span>Exception e<span style="color:#f92672">)</span> <span style="color:#f92672">{</span>
</span></span><span style="display:flex;"><span>    System<span style="color:#f92672">.</span><span style="color:#a6e22e">err</span><span style="color:#f92672">.</span><span style="color:#a6e22e">println</span><span style="color:#f92672">(</span><span style="color:#e6db74">&#34;Error during Excel to JSON conversion:&#34;</span><span style="color:#f92672">);</span>
</span></span><span style="display:flex;"><span>    e<span style="color:#f92672">.</span><span style="color:#a6e22e">printStackTrace</span><span style="color:#f92672">();</span>
</span></span><span style="display:flex;"><span><span style="color:#f92672">}</span>
</span></span></code></pre></div><p>Con questi passaggi, la conversione da Excel a JSON in Java è completa e puoi integrare il JSON generato nella tua API o nel flusso di lavoro di elaborazione dei dati.</p>
<h2 id="implementazione-completa-conversione-da-excel-a-json-in-java">Implementazione completa: conversione da Excel a JSON in Java</h2>
<p>Il seguente esempio dimostra come eseguire la conversione da Excel a JSON in Java utilizzando Conholdate.Total for Java.</p>
<div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-java" data-lang="java"><span style="display:flex;"><span><span style="color:#f92672">import</span> com.groupdocs.conversion.Conversion<span style="color:#f92672">;</span>
</span></span><span style="display:flex;"><span><span style="color:#f92672">import</span> com.groupdocs.conversion.options.convert.JsonConvertOptions<span style="color:#f92672">;</span>
</span></span><span style="display:flex;"><span><span style="color:#f92672">import</span> com.groupdocs.conversion.options.convert.JsonConvertOptions.DateFormat<span style="color:#f92672">;</span>
</span></span><span style="display:flex;"><span><span style="color:#f92672">import</span> com.groupdocs.conversion.options.convert.JsonConvertOptions.NumberFormat<span style="color:#f92672">;</span>
</span></span><span style="display:flex;"><span>
</span></span><span style="display:flex;"><span><span style="color:#66d9ef">public</span> <span style="color:#66d9ef">class</span> <span style="color:#a6e22e">ExcelToJsonDemo</span> <span style="color:#f92672">{</span>
</span></span><span style="display:flex;"><span>    <span style="color:#66d9ef">public</span> <span style="color:#66d9ef">static</span> <span style="color:#66d9ef">void</span> <span style="color:#a6e22e">main</span><span style="color:#f92672">(</span>String<span style="color:#f92672">[]</span> args<span style="color:#f92672">)</span> <span style="color:#f92672">{</span>
</span></span><span style="display:flex;"><span>        <span style="color:#75715e">// Input Excel file (generic path)
</span></span></span><span style="display:flex;"><span><span style="color:#75715e"></span>        String inputFile <span style="color:#f92672">=</span> <span style="color:#e6db74">&#34;sample.xlsx&#34;</span><span style="color:#f92672">;</span>
</span></span><span style="display:flex;"><span>        <span style="color:#75715e">// Desired JSON output file
</span></span></span><span style="display:flex;"><span><span style="color:#75715e"></span>        String outputFile <span style="color:#f92672">=</span> <span style="color:#e6db74">&#34;sample.json&#34;</span><span style="color:#f92672">;</span>
</span></span><span style="display:flex;"><span>
</span></span><span style="display:flex;"><span><span style="color:#75715e">// Perform conversion inside try‑with‑resources to ensure proper cleanup
</span></span></span><span style="display:flex;"><span><span style="color:#75715e"></span>        <span style="color:#66d9ef">try</span> <span style="color:#f92672">(</span>Conversion conversion <span style="color:#f92672">=</span> <span style="color:#66d9ef">new</span> Conversion<span style="color:#f92672">(</span>inputFile<span style="color:#f92672">))</span> <span style="color:#f92672">{</span>
</span></span><span style="display:flex;"><span>
</span></span><span style="display:flex;"><span><span style="color:#75715e">// Configure JSON conversion options
</span></span></span><span style="display:flex;"><span><span style="color:#75715e"></span>            JsonConvertOptions jsonOptions <span style="color:#f92672">=</span> <span style="color:#66d9ef">new</span> JsonConvertOptions<span style="color:#f92672">();</span>
</span></span><span style="display:flex;"><span>
</span></span><span style="display:flex;"><span><span style="color:#75715e">// Pretty‑print the JSON for readability
</span></span></span><span style="display:flex;"><span><span style="color:#75715e"></span>            jsonOptions<span style="color:#f92672">.</span><span style="color:#a6e22e">setPrettyPrint</span><span style="color:#f92672">(</span><span style="color:#66d9ef">true</span><span style="color:#f92672">);</span>
</span></span><span style="display:flex;"><span>
</span></span><span style="display:flex;"><span><span style="color:#75715e">// Include column headers as JSON property names
</span></span></span><span style="display:flex;"><span><span style="color:#75715e"></span>            jsonOptions<span style="color:#f92672">.</span><span style="color:#a6e22e">setIncludeHeaders</span><span style="color:#f92672">(</span><span style="color:#66d9ef">true</span><span style="color:#f92672">);</span>
</span></span><span style="display:flex;"><span>
</span></span><span style="display:flex;"><span><span style="color:#75715e">// Define how dates and numbers should be formatted in the JSON output
</span></span></span><span style="display:flex;"><span><span style="color:#75715e"></span>            jsonOptions<span style="color:#f92672">.</span><span style="color:#a6e22e">setDateFormat</span><span style="color:#f92672">(</span>DateFormat<span style="color:#f92672">.</span><span style="color:#a6e22e">CUSTOM</span><span style="color:#f92672">);</span>
</span></span><span style="display:flex;"><span>            jsonOptions<span style="color:#f92672">.</span><span style="color:#a6e22e">setCustomDateFormat</span><span style="color:#f92672">(</span><span style="color:#e6db74">&#34;yyyy-MM-dd&#34;</span><span style="color:#f92672">);</span>
</span></span><span style="display:flex;"><span>            jsonOptions<span style="color:#f92672">.</span><span style="color:#a6e22e">setNumberFormat</span><span style="color:#f92672">(</span>NumberFormat<span style="color:#f92672">.</span><span style="color:#a6e22e">CUSTOM</span><span style="color:#f92672">);</span>
</span></span><span style="display:flex;"><span>            jsonOptions<span style="color:#f92672">.</span><span style="color:#a6e22e">setCustomNumberFormat</span><span style="color:#f92672">(</span><span style="color:#e6db74">&#34;#.##&#34;</span><span style="color:#f92672">);</span>
</span></span><span style="display:flex;"><span>
</span></span><span style="display:flex;"><span><span style="color:#75715e">// Optional performance tweak: limit rows processed per batch (useful for very large sheets)
</span></span></span><span style="display:flex;"><span><span style="color:#75715e"></span>            jsonOptions<span style="color:#f92672">.</span><span style="color:#a6e22e">setRowsPerBatch</span><span style="color:#f92672">(</span>5000<span style="color:#f92672">);</span>
</span></span><span style="display:flex;"><span>
</span></span><span style="display:flex;"><span><span style="color:#75715e">// Execute the conversion
</span></span></span><span style="display:flex;"><span><span style="color:#75715e"></span>            conversion<span style="color:#f92672">.</span><span style="color:#a6e22e">convert</span><span style="color:#f92672">(</span>outputFile<span style="color:#f92672">,</span> jsonOptions<span style="color:#f92672">);</span>
</span></span><span style="display:flex;"><span>
</span></span><span style="display:flex;"><span>System<span style="color:#f92672">.</span><span style="color:#a6e22e">out</span><span style="color:#f92672">.</span><span style="color:#a6e22e">println</span><span style="color:#f92672">(</span><span style="color:#e6db74">&#34;Conversion completed successfully. JSON saved to: &#34;</span> <span style="color:#f92672">+</span> outputFile<span style="color:#f92672">);</span>
</span></span><span style="display:flex;"><span>        <span style="color:#f92672">}</span> <span style="color:#66d9ef">catch</span> <span style="color:#f92672">(</span>Exception e<span style="color:#f92672">)</span> <span style="color:#f92672">{</span>
</span></span><span style="display:flex;"><span>            <span style="color:#75715e">// Basic error handling – in production code you might want more sophisticated logging
</span></span></span><span style="display:flex;"><span><span style="color:#75715e"></span>            System<span style="color:#f92672">.</span><span style="color:#a6e22e">err</span><span style="color:#f92672">.</span><span style="color:#a6e22e">println</span><span style="color:#f92672">(</span><span style="color:#e6db74">&#34;Error during Excel to JSON conversion:&#34;</span><span style="color:#f92672">);</span>
</span></span><span style="display:flex;"><span>            e<span style="color:#f92672">.</span><span style="color:#a6e22e">printStackTrace</span><span style="color:#f92672">();</span>
</span></span><span style="display:flex;"><span>        <span style="color:#f92672">}</span>
</span></span><span style="display:flex;"><span>    <span style="color:#f92672">}</span>
</span></span><span style="display:flex;"><span><span style="color:#f92672">}</span>
</span></span></code></pre></div><blockquote>
<p><strong>Nota:</strong> Questo esempio di codice dimostra la funzionalità principale. Prima di usarlo nel tuo progetto, assicurati di aggiornare tutti i percorsi dei file e i valori di configurazione per corrispondere al tuo ambiente reale, verifica che tutte le dipendenze richieste siano correttamente installate e testa accuratamente nel tuo ambiente di sviluppo. Se riscontri problemi, consulta la <a href="https://docs.conholdate.com/java/">documentazione ufficiale</a> o contatta il <a href="https://forum.conholdate.com/c/total/5">team di supporto</a> per assistenza.</p>
</blockquote>
<h2 id="opzioni-di-conversione-e-impostazioni">Opzioni di conversione e impostazioni</h2>
<p>L&rsquo;SDK offre diverse opzioni per personalizzare l&rsquo;output JSON:</p>
<ul>
<li><strong>Pretty Print</strong> - Migliora la leggibilità aggiungendo l&rsquo;indentazione.
<div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-java" data-lang="java"><span style="display:flex;"><span>jsonOptions<span style="color:#f92672">.</span><span style="color:#a6e22e">setPrettyPrint</span><span style="color:#f92672">(</span><span style="color:#66d9ef">true</span><span style="color:#f92672">);</span>
</span></span></code></pre></div></li>
<li><strong>Include Headers</strong> - Usa la prima riga del foglio di lavoro come nomi delle proprietà.<br>
<code>setIncludeHeaders(true)</code> (vedi il <a href="https://reference.conholdate.com/java/">riferimento API</a>).</li>
<li><strong>Custom Date Format</strong> - Definisci un modello di data, ad es., <code>&quot;yyyy-MM-dd&quot;</code>.<br>
<code>setCustomDateFormat(&quot;yyyy-MM-dd&quot;)</code>.</li>
<li><strong>Custom Number Format</strong> - Controlla la precisione numerica, ad es., <code>&quot;#.##&quot;</code>.<br>
<code>setCustomNumberFormat(&quot;#.##&quot;)</code>.</li>
</ul>
<p>Regolare queste impostazioni consente di allineare il JSON generato alle aspettative dei servizi o database a valle.</p>
<h2 id="conclusione">Conclusione</h2>
<p>Adesso hai una conversione da Excel a JSON funzionante in Java, alimentata da <a href="https://products.conholdate.com/total/java/">Conholdate.Total for Java</a>. L&rsquo;SDK si occupa del lavoro pesante, mentre le opzioni configurabili ti danno il controllo su formattazione e prestazioni. Ricorda di ottenere una licenza adeguata per l&rsquo;uso in produzione; puoi richiedere una <a href="https://purchase.conholdate.com/temporary-license/">pagina di licenza temporanea</a> per valutare la libreria o consultare la pagina completa dei <a href="https://purchase.conholdate.com/pricing/total/family/">prezzi</a> per i termini commerciali. Buon coding!</p>
<h2 id="faqs">FAQs</h2>
<ul>
<li>
<p><strong>Come eseguire la conversione da Excel a JSON in Java con Conholdate.Total?</strong><br>
Utilizzare la classe <code>Conversion</code> insieme a <code>JsonConvertOptions</code> come mostrato nell&rsquo;esempio di codice. L&rsquo;SDK astrae la gestione dei file e fornisce una singola chiamata <code>convert</code>.</p>
</li>
<li>
<p><strong>Posso personalizzare i formati di data e numero durante la conversione da Excel a JSON in Java?</strong><br>
Sì. I metodi <code>setCustomDateFormat</code> e <code>setCustomNumberFormat</code> consentono di definire i pattern che corrispondono alle aspettative del sistema di destinazione.</p>
</li>
<li>
<p><strong>Quali opzioni di licenza sono disponibili per Conholdate.Total per Java?</strong><br>
È possibile ottenere una licenza di valutazione temporanea dalla <a href="https://purchase.conholdate.com/temporary-license/">pagina della licenza temporanea</a> o acquistare una licenza completa tramite la <a href="https://purchase.conholdate.com/pricing/total/family/">pagina dei prezzi</a>.</p>
</li>
<li>
<p><strong>È supportata l&rsquo;elaborazione batch per file Excel di grandi dimensioni?</strong><br>
L&rsquo;opzione <code>setRowsPerBatch</code> consente di elaborare i fogli di lavoro a blocchi, il che è ideale per scenari di conversione batch.</p>
</li>
</ul>
<h2 id="leggi-di-più">Leggi di più</h2>
<ul>
<li><a href="https://blog.conholdate.com/it/total/insert-watermark-in-excel-using-java/">Inserisci filigrana in Excel usando Java</a></li>
<li><a href="https://blog.conholdate.com/it/total/convert-excel-to-image-in-java/">Converti Excel in immagine in Java</a></li>
<li><a href="https://blog.conholdate.com/it/total/convert-json-to-xml-in-csharp/">Converti JSON in XML in C#</a></li>
</ul>
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