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Struts2 `
` 與原生 `
` 差異解析</h1> <div class="ejrnbxs_enx"> 編輯：程式設計綜合問答</div> <div class="ejrnbxs_qxs"> <div class="akevx_jb"> <script language='javascript' src='/ad/p.js'></script></div> <h2>核心差異</h2> <table border="1" cellpadding="5"> <tr><th>特性</th><th><code><textarea></code></th><th><code><s:textarea></code></th></tr> <tr><td>來源</td><td>HTML 原生標籤</td><td>Struts2 標籤庫</td></tr> <tr><td>屬性支援</td><td>原生屬性</td><td>封裝常用屬性，提供 <code>label</code>、<code>required</code>、<code>cssClass</code> 等</td></tr> <tr><td>值綁定</td><td>手動 <code>value="${model.content}"</code></td><td>自動從 ValueStack 取值，支援 OGNL 運算式</td></tr> <tr><td>主題/樣板</td><td>無</td><td>支援 xhtml、simple、ajax 等主題，自動生成表單排版</td></tr> <tr><td>最終輸出</td><td>原樣輸出</td><td>編譯為 <code><textarea></code> 並注入 id、name、錯誤訊息等</td></tr> </table> <h2>使用建議</h2> <ul> <li><strong>Struts2 專案</strong>：優先使用 <code><s:textarea></code>，享受自動資料綁定、驗證錯誤顯示、主題統一風格。</li> <li><strong>靜態頁面/非 Struts2</strong>：直接用原生 <code><textarea></code>。</li> <li><strong>客製化需求高</strong>：可在 <code>struts.xml</code> 覆寫模板或使用 <code>theme="simple"</code> 手動控制輸出。</li> </ul> <h2>程式碼對照</h2> <pre><code><!-- Struts2 寫法 --> <s:textarea name="content" label="內容" rows="5" cols="40" cssClass="form-control" /> <!-- 產生的 HTML (xhtml 主題) --> <tr> <td class="tdLabel"><label for="content">內容:</label></td> <td><textarea id="content" name="content" rows="5" cols="40" class="form-control"></textarea></td> </tr> </code></pre> <h2>總結</h2> <p><code><s:textarea></code> 是 Struts2 對 <code><textarea></code> 的封裝，提供表單綁定、驗證、主題等企業級開發便利功能，最終仍渲染為標準 HTML <code>textarea</code>。</p> <div class="qcxs_ie_he"></div> </div> <div class="akevx_own"> <script language='javascript' src='/ad/p.js'></script></div> <div class="akevx_mj"> </div> <div class="qcxs_ie_he"></div> <ol class="qmsbvx_hsb ovv_hex"> <li>上一篇文章： <a class='LinkPrevArticle' href='https://code.yunyiwangluo.com/bianchen/bczhwd/29338.html' >SQL 留言板系統主外鍵設計：留言表與分類表關聯實作</a> <li>下一篇文章： <a class='LinkNextArticle' href='https://code.yunyiwangluo.com/bianchen/bczhwd/29340.html' >Java Web JDBC 連接 SQL Server 完整配置與常見錯誤排查</a> </ol> </div> </div> <div class="qirnxbd bg1 mt20"> <div class="jdbsbav"> <a href='https://code.yunyiwangluo.com/bianchen/bczhwd/' target="_blank">程式設計綜合問答</a> <div class="jdbsbav_hx"></div> </div> <div class="qirnxbd_rbx"> <div class="oiendx"> <a href='https://code.yunyiwangluo.com/bianchen/bczhwd/44842.html' target="_blank"><img src='https://code.yunyiwangluo.com/bianchen/UploadFiles_4619/201701/2017010912291120_S.jpg' width='100' height='70' alt='Ubuntu FFmpeg RTSP 轉 RTMP 失敗：缺少本地 RTMP 伺服器' border='0'></a> <a href='https://code.yunyiwangluo.com/bianchen/bczhwd/44842.html' target="_blank"><strong>Ubuntu FFmpeg RTSP 轉 RTMP 失敗：缺少本地 RTMP 伺服器</strong></a> <a href='https://code.yunyiwangluo.com/bianchen/bczhwd/44842.html' target="_blank"><p>錯誤現象 執行指令： ffmpeg -i rtsp://ad</p></a> </div> <div class="oiendx"> <a href='https://code.yunyiwangluo.com/bianchen/bczhwd/31181.html' target="_blank"><img src='https://code.yunyiwangluo.com/bianchen/UploadFiles_4619/201701/2017010611145066_S.jpg' width='100' height='70' alt='C 語言 scanf 輸入被跳過：緩衝區殘留換行符解決方案' border='0'></a> <a href='https://code.yunyiwangluo.com/bianchen/bczhwd/31181.html' target="_blank"><strong>C 語言 scanf 輸入被跳過：緩衝區殘留換行符解決方案</strong></a> <a href='https://code.yunyiwangluo.com/bianchen/bczhwd/31181.html' target="_blank"><p>現象 scanf(%s, name) 後，scanf(%c,</p></a> </div> <div class="oiendx"> <a href='https://code.yunyiwangluo.com/bianchen/bczhwd/44608.html' target="_blank"><img src='https://code.yunyiwangluo.com/bianchen/UploadFiles_4619/201701/2017010912193890.png' width='100' height='70' alt='C# DataGridView 篩選顯示包含特定字符的行' border='0'></a> <a href='https://code.yunyiwangluo.com/bianchen/bczhwd/44608.html' target="_blank"><strong>C# DataGridView 篩選顯示包含特定字符的行</strong></a> <a href='https://code.yunyiwangluo.com/bianchen/bczhwd/44608.html' target="_blank"><p>需求 DataGridView 綁定數據源，僅顯示商品名稱含</p></a> </div> <div class="oiendx"> <a href='https://code.yunyiwangluo.com/bianchen/bczhwd/28442.html' target="_blank"><img src='https://code.yunyiwangluo.com/bianchen/UploadFiles_4619/201701/2017010609270618.jpg' width='100' height='70' alt='MySQL 多表聚合寫入總表：LEFT JOIN 分組聚合與 INSERT ... 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