网络编程 
首页 > 网络编程 > 浏览文章

HttpClient Post 二进制/字节流/byte[]实例代码

(编辑:jimmy 日期: 2024/11/26 浏览:3 次 )

 HttpClient Post 二进制/字节流/byte[]实例代码

HttpClient 3.x

public class HttpHelper { 
  String m_url; 
  HttpClient m_HttpClient; 
 
  public HttpHelper(String url) { 
    m_url = url; 
    m_HttpClient = new HttpClient(); 
  } 
 
  public byte[] post(byte[] bytes, String contentType) throws IOException { 
    PostMethod method = new PostMethod(m_url); 
 
    if ((contentType != null) && (contentType.length() > 0)) 
      method.setRequestHeader("Content-type" , contentType); 
    method.setRequestEntity(new ByteArrayRequestEntity(bytes)); 
    int HttpCode = m_HttpClient.executeMethod(method); 
    if (HttpCode != HttpStatus.SC_OK) 
      throw new IOException("Invalid HttpStatus: " + HttpCode); 
    InputStream respStream = method.getResponseBodyAsStream(); 
    int respBodySize = respStream.available(); 
    if (respBodySize <= 0) 
      throw new IOException("Invalid respBodySize: " + respBodySize); 
    byte[] respBuffer = new byte[respBodySize]; 
    if (respStream.read(respBuffer) != respBodySize) 
      throw new IOException("Read respBody Error"); 
    return respBuffer; 
  } 
 
  public String postXml(String str) throws IOException { 
    byte[] reqBuffer = str.getBytes(Charset.forName("UTF-8")); 
    byte[] respBuffer = post(reqBuffer, "application/xml; charset=UTF-8"); 
    String resp = new String(respBuffer, Charset.forName("UTF-8")); 
    return resp; 
  } 
} 

HttpClient 4.x

public class HttpHelper { 
  CloseableHttpClient m_HttpClient; 
 
  public HttpHelper() { 
    m_HttpClient = HttpClients.createDefault(); 
  } 
 
  // send bytes and recv bytes 
  public byte[] post(String url, byte[] bytes, String contentType) throws IOException { 
    HttpPost httpPost = new HttpPost(url); 
    httpPost.setEntity(new ByteArrayEntity(bytes)); 
    if (contentType != null) 
      httpPost.setHeader("Content-type", contentType); 
    CloseableHttpResponse httpResponse = m_HttpClient.execute(httpPost); 
    try { 
      HttpEntity entityResponse = httpResponse.getEntity(); 
      int contentLength = (int) entityResponse.getContentLength(); 
      if (contentLength <= 0) 
        throw new IOException("No response"); 
      byte[] respBuffer = new byte[contentLength]; 
      if (entityResponse.getContent().read(respBuffer) != respBuffer.length) 
        throw new IOException("Read response buffer error"); 
      return respBuffer; 
    } finally { 
      httpResponse.close(); 
    } 
  } 
 
  public byte[] post(String url, byte[] bytes) throws IOException { 
    return post(url, bytes, null); 
  } 
 
  public String postXml(String url, String str) throws IOException { 
    byte[] reqBuffer = str.getBytes(Charset.forName("UTF-8")); 
    byte[] respBuffer = post(url, reqBuffer, "application/xml; charset=UTF-8"); 
    String resp = new String(respBuffer, Charset.forName("UTF-8")); 
    return resp; 
  } 
} 

 感谢阅读,希望能帮助到大家,谢谢大家对本站的支持!

上一篇:Java 实现 web服务器的简单实例
下一篇:JSP 获取用户的真实IP两种实现方法详解
一句话新闻
一文看懂荣耀MagicBook Pro 16
荣耀猎人回归!七大亮点看懂不只是轻薄本,更是游戏本的MagicBook Pro 16.
人们对于笔记本电脑有一个固有印象:要么轻薄但性能一般,要么性能强劲但笨重臃肿。然而,今年荣耀新推出的MagicBook Pro 16刷新了人们的认知——发布会上,荣耀宣布猎人游戏本正式回归,称其继承了荣耀 HUNTER 基因,并自信地为其打出“轻薄本,更是游戏本”的口号。
众所周知,寻求轻薄本的用户普遍更看重便携性、外观造型、静谧性和打字办公等用机体验,而寻求游戏本的用户则普遍更看重硬件配置、性能释放等硬核指标。把两个看似难以相干的产品融合到一起,我们不禁对它产生了强烈的好奇:作为代表荣耀猎人游戏本的跨界新物种,它究竟做了哪些平衡以兼顾不同人群的各类需求呢?
友情链接:杰晶网络 DDR爱好者之家 南强小屋 黑松山资源网 白云城资源网 网站地图 SiteMap