package org.mobiletrain.utils;

 import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.ByteArrayOutputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map; import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils; /**
* 请求网络的工具类
* 需导入三个jar包
    commons-logging-1.1.1.jar
    httpclient-4.1.2.jar
    httpcore-4.1.2.jar
* */
public class HttpHelpers { /**
* 下载图片 保存到byte类型的数组中
*
* @param path
* 地址
* @return byte[]
*/
public static byte[] downLoadImg(String path) {
BufferedInputStream bis = null;
try {
// 1,创建HttpClient对象 Android6.0之前可以使用
HttpClient httpClient = new DefaultHttpClient();
// 2,创建请求对象+指定地址
HttpGet httpGet = new HttpGet(path);
// 3,执行请求 获得HttpResponse对象
HttpResponse response = httpClient.execute(httpGet);
// 4,获得响应码
int code = response.getStatusLine().getStatusCode();
if (code == 200) {
// 5,得到响应的HttpEntity对象
HttpEntity responseEntity = response.getEntity();
// 方法一
// bis = new BufferedInputStream(responseEntity.getContent());
// byte b[] = toByteArray(bis);
// return b; // 方法二
return EntityUtils.toByteArray(responseEntity); } } catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally {
if (bis != null) {
try {
bis.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
} return null; } /**
* 把图片下载到本地磁盘
*
* @param path
*/
public static void downLoadImgToLocal(String path) {
BufferedInputStream bis = null;
BufferedOutputStream boStream = null;
try {
// 1,创建HttpClient对象 Android6.0之前可以使用
HttpClient httpClient = new DefaultHttpClient();
// 2,创建请求对象+指定地址
HttpGet httpGet = new HttpGet(path);
// 3,执行请求 获得HttpResponse对象
HttpResponse response = httpClient.execute(httpGet);
// 4,获得响应码
int code = response.getStatusLine().getStatusCode();
if (code == 200) {
// 5,得到响应的HttpEntity对象
HttpEntity responseEntity = response.getEntity();
// 方法一
// bis = new BufferedInputStream(responseEntity.getContent());
// byte b[] = toByteArray(bis); // 方法二
byte b[] = EntityUtils.toByteArray(responseEntity);
String endsWith = path.substring(path.lastIndexOf("."));
boStream = new BufferedOutputStream(new FileOutputStream((int) (Math.random() * 100) + endsWith));
boStream.write(b); } } catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally {
if (bis != null) {
try {
bis.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
if (boStream != null) {
try {
boStream.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
} } /**
* 从互联网获取文本 json xml
*
* @param path
* 地址
* @return 获取到的文本数据
*/ public static String getResourceByInternet(String path) {
BufferedReader bReader = null;
try {
// 1,创建HttpClient对象 Android6.0之前可以使用
HttpClient httpClient = new DefaultHttpClient();
// 2,创建请求对象+指定地址
HttpGet httpGet = new HttpGet(path);
// 3,执行请求 获得HttpResponse对象
HttpResponse response = httpClient.execute(httpGet);
// 4,获得响应码
int code = response.getStatusLine().getStatusCode();
if (code == 200) {
// 得到HttpEntity对象
HttpEntity responseEntity = response.getEntity();
// 方法一
// bReader = new BufferedReader(new
// InputStreamReader(responseEntity.getContent()));
// StringBuilder sbBuilder = new StringBuilder();
// String line = null;
// while ((line = bReader.readLine()) != null) {
// sbBuilder.append(line);
// }
//
// return sbBuilder.toString(); // 方法二
return EntityUtils.toString(responseEntity); } } catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally {
if (bReader != null) {
try {
bReader.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
} return null; } public static byte[] toByteArray(BufferedInputStream bufferedInputStream) {
byte b[] = new byte[1024 * 1024];
int len = 0;
ByteArrayOutputStream baos = new ByteArrayOutputStream();
try {
while ((len = bufferedInputStream.read(b)) != -1) {
baos.write(b, 0, len);
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} return baos.toByteArray(); } public static String upLoadData(String path, Map<String, String> map) {
BufferedReader bReader = null;
try {
// 1,创建HttpClient对象 Android6.0之前可以使用
HttpClient httpClient = new DefaultHttpClient();
// 2,创建请求对象+指定地址
HttpPost httpPost = new HttpPost(path);
// 设置用于发送到服务端的参数
List<NameValuePair> list = new ArrayList<NameValuePair>(); for (String string : map.keySet()) {
list.add(new BasicNameValuePair(string, map.get(string)));
}
HttpEntity requestEntity = new UrlEncodedFormEntity(list, "gbk");
httpPost.setEntity(requestEntity); // 3,执行请求 获得HttpResponse对象
HttpResponse response = httpClient.execute(httpPost);
// 4,获得响应码
int code = response.getStatusLine().getStatusCode();
if (code == 200) {
// 得到HttpEntity对象
HttpEntity responseEntity = response.getEntity();
// 方法一
// bReader = new BufferedReader(new
// InputStreamReader(responseEntity.getContent()));
// StringBuilder sbBuilder = new StringBuilder();
// String line = null;
// while ((line = bReader.readLine()) != null) {
// sbBuilder.append(line);
// }
//
// return sbBuilder.toString(); // 方法二
return EntityUtils.toString(responseEntity, "gbk"); } } catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally {
if (bReader != null) {
try {
bReader.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
} return null; } public static void main(String[] args) {
byte b[] = downLoadImg("http://images.china.cn/attachement/jpg/site1000/20140313/844bf52c7d7c148b8abc05.jpg");
BufferedOutputStream bufferedOutputStream;
try {
bufferedOutputStream = new BufferedOutputStream(new FileOutputStream("ceo.jpg"));
// bufferedOutputStream.write(b); } catch (FileNotFoundException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} // downLoadImgToLocal("http://images.china.cn/attachement/jpg/site1000/20140313/844bf52c7d7c148b8abc05.jpg"); // System.out.println(getResourceByInternet("http://www.doukantv.com/api/hot/?type=movie&cli=ipad&sys_ver=7.1.1&ver=2.1"));
Map<String, String> map = new HashMap<String, String>();
map.put("uname", "张三");
map.put("pwd", "admin");
System.out.println(upLoadData("http://172.20.136.5:8080/2016_05_27_server/login", map)); } }

JAVA_HttpClientUtils的更多相关文章

随机推荐

  1. java实现多继承

    方法:  接口+组合 理由:通过接口实现客户端的使用时多继承类的多类, 通过组合实现客户端内部类的实现相关功能(而且有些共用的功能可以不总是多次实现). public interface GMapOb ...

  2. HDU 5622 KK's Chemical DP

    题意:bc round 71(中文题面) 分析(官方题解): 根据药品之间的相互关系,我们可以构建一张图,我们对相互会发生反应的药品连边 这个图的特征,是一个环加上一些“树”(可能有多个联通块) 一个 ...

  3. myeclipse10 安装 testng插件

    下载插件: http://pan.baidu.com/s/1c0pghFE 放到dropins目录

  4. 【暑假】[深入动态规划]UVa 1628 Pizza Delivery

    UVa 1628 Pizza Delivery 题目: http://acm.hust.edu.cn/vjudge/problem/viewProblem.action?id=51189 思路:    ...

  5. C++ 我想这样用(一)

    虽然还是菜鸟,但我是一个地地道道的c程序员,甚至一度很讨厌C++(虽然现在也是). 为了在不用C++的情况下学习和使用面向对象而长期奔走,曾经用过一年的Python,后终放弃.之后很长一段时间里摆弄O ...

  6. return遇到finally

    public class Test { public static void main(String[] args) { System.out.println("=============t ...

  7. 宿主进程 vshost.exe

    Hosting Process (vshost.exe) 宿主进程是VS的一个特性.可以提高调试的性能,可以进行部分信任调试(partial trust debugging),可以进行设计时表达式计算 ...

  8. Use ALTER DATABASE to Move Databases

    Use ALTER DATABASE to Move Databases Follow Our Daily Tips •facebook.com/TechNetTips• twitter.com/Te ...

  9. 我是如何理解Java抽象类和接口的

    在面试中我们经常被问到:Java中抽象类和接口的区别是什么? 然后,我们就大说一通抽象类可以有方法,接口不能有实际的方法啦:一个类只能继承一个抽象类,却可以继承多个接口啦,balabala一大堆,就好 ...

  10. 如何关闭log4j中配置的spring或者hibernate的日志信息

    通常在建立一个web项目的时候,我们通常需要为其配置日志,以便了解启动过程中发生了什么,如果启动过程中发生了错误,则可以很方便的查看错误的信息,但是在项目部署到服务器上时,打印日志信息,需要耗费大量的 ...