HttpClient Post 二进制/字节流/byte[]实例代码

一个女子,大美为心净,中美为修寂,小美为貌体。早安!人为什么会犯下同样的错误?原因只有一个:前一次不够痛。早安!每个人的青春里都有一条弯路,谁也没法替谁走完,但未来总还在。

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!

到此这篇关于HttpClient Post 二进制/字节流/byte[]实例代码就介绍到这了。时间好比一位妙手成春的良医,它能帮助我们医治流血的心灵。时间犹如一个万能的慰藉者,它能开导我们忘记人生的伤痛。时间有如一位循循善诱的智者,他能引导求学者构筑知识的大厦。时间好比一位点屏成蝇的画家,他会帮助勤奋者描绘辉煌的明天。更多相关HttpClient Post 二进制/字节流/byte[]实例代码内容请查看相关栏目,小编编辑不易,再次感谢大家的支持!

您可能有感兴趣的文章
javascriptp 中HttpClient中的POST方法实例详解

Java HttpClient技术详解

Java如何使用HttpClient详细示例

JSP之表单提交get和post的区别详解及实例

JAVA POST与GET数据传递时中文乱码问题如何解决方法