折腾了好几天的 HTTP 终于搞定了，经测试正常，不过是初步用例测试用的，因为后面还要修改先把当前版本保存在博客里吧。

其中POST因为涉及多段上传需要导入两个包文件，我用的是最新的 httpmine4.3 发现网上很多 MultipartEntity 相关的文章都是早起版本的，以前的一些方法虽然还可用，但新版本中已经不建议使用了，所以全部使用新的方式 MultipartEntityBuilder 来处理了。

httpmime-4.3.2.jar
httpcore-4.3.1.jar 

下载地址：http://hc.apache.org/downloads.cgi

有些镜像貌似打不开，页面上可以可以选择国内的 .cn 后缀的域名镜像服务器来下载

如果是 android studio 这里可能会遇到一个问题：Android Duplicate files copied in APK

经测试 POST 对中文处理也是正常的，没有发现乱码

下面是完整代码：

ZHttpRequest.java

package com.ai9475.util;import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.methods.HttpRequestBase;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.mime.HttpMultipartMode;
import org.apache.http.entity.mime.MultipartEntityBuilder;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;
import org.apache.http.protocol.HTTP;import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.nio.charset.Charset;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;/*** Created by ZHOUZ on 14-2-3.*/
public class ZHttpRequest
{protected String url = "";protected Map<String, String> headers = null;protected int connectionTimeout = 5000;protected int soTimeout = 10000;protected int statusCode = 200;protected String charset = HTTP.UTF_8;protected HttpGet httpGet;protected HttpPost httpPost;protected HttpParams httpParameters;protected HttpResponse httpResponse;protected HttpClient httpClient;protected String inputContent;/*** 设置当前请求的链接** @param url* @return*/public ZHttpRequest setUrl(String url){this.url = url;return this;}/*** 设置请求的 header 信息** @param headers* @return*/public ZHttpRequest setHeaders(Map headers){this.headers = headers;return this;}/*** 设置连接超时时间** @param timeout 单位（毫秒），默认 5000* @return*/public ZHttpRequest setConnectionTimeout(int timeout){this.connectionTimeout = timeout;return this;}/*** 设置 socket 读取超时时间** @param timeout 单位（毫秒），默认 10000* @return*/public ZHttpRequest setSoTimeout(int timeout){this.soTimeout = timeout;return this;}/*** 设置获取内容的编码格式** @param charset 默认为 UTF-8* @return*/public ZHttpRequest setCharset(String charset){this.charset = charset;return this;}/*** 获取 HTTP 请求响应信息** @return*/public HttpResponse getHttpResponse(){return this.httpResponse;}/*** 获取 HTTP 客户端连接管理器** @return*/public HttpClient getHttpClient(){return this.httpClient;}/*** 获取请求的状态码** @return*/public int getStatusCode(){return this.statusCode;}/*** 通过 GET 方式请求数据** @param url* @return* @throws IOException*/public String get(String url) throws IOException{// 设置当前请求的链接this.setUrl(url);// 实例化 GET 连接this.httpGet = new HttpGet(this.url);// 自定义配置 header 信息this.addHeaders(this.httpGet);// 初始化客户端请求this.initHttpClient();// 发送 HTTP 请求this.httpResponse = this.httpClient.execute(this.httpGet);// 读取远程数据this.getInputStream();// 远程请求状态码是否正常if (this.statusCode != HttpStatus.SC_OK) {return null;}// 返回全部读取到的字符串return this.inputContent;}public String post(String url, Map<String, String> datas, Map<String, String> files) throws IOException{this.setUrl(url);// 实例化 GET 连接this.httpPost = new HttpPost(this.url);// 自定义配置 header 信息this.addHeaders(this.httpPost);// 初始化客户端请求this.initHttpClient();Iterator iterator = datas.entrySet().iterator();MultipartEntityBuilder multipartEntityBuilder = MultipartEntityBuilder.create();multipartEntityBuilder.setMode(HttpMultipartMode.BROWSER_COMPATIBLE);multipartEntityBuilder.setCharset(Charset.forName(this.charset));// 发送的数据while (iterator.hasNext()) {Map.Entry<String, String> entry = (Map.Entry<String, String>) iterator.next();multipartEntityBuilder.addTextBody(entry.getKey(), entry.getValue(), ContentType.create("text/plain", Charset.forName(this.charset)));}// 发送的文件if (files != null) {iterator = files.entrySet().iterator();while (iterator.hasNext()) {Map.Entry<String, String> entry = (Map.Entry<String, String>) iterator.next();String path = entry.getValue();if ("".equals(path) || path == null) continue;File file = new File(entry.getValue());multipartEntityBuilder.addBinaryBody(entry.getKey(), file);}}// 生成 HTTP 实体HttpEntity httpEntity = multipartEntityBuilder.build();// 设置 POST 请求的实体部分this.httpPost.setEntity(httpEntity);// 发送 HTTP 请求this.httpResponse = this.httpClient.execute(this.httpPost);// 读取远程数据this.getInputStream();// 远程请求状态码是否正常if (this.statusCode != HttpStatus.SC_OK) {return null;}// 返回全部读取到的字符串return this.inputContent.toString();}/*** 为 HTTP 请求添加 header 信息** @param request*/protected void addHeaders(HttpRequestBase request){if (this.headers != null) {Set keys = this.headers.entrySet();Iterator iterator = keys.iterator();Map.Entry<String, String> entry;while (iterator.hasNext()) {entry = (Map.Entry<String, String>) iterator.next();request.addHeader(entry.getKey().toString(), entry.getValue().toString());}}}/*** 配置请求参数*/protected void setParams(){this.httpParameters = new BasicHttpParams();this.httpParameters.setParameter("charset", this.charset);// 设置 连接请求超时时间HttpConnectionParams.setConnectionTimeout(this.httpParameters, this.connectionTimeout);// 设置 socket 读取超时时间HttpConnectionParams.setSoTimeout(this.httpParameters, this.soTimeout);}/*** 初始化配置客户端请求*/protected void initHttpClient(){// 配置 HTTP 请求参数this.setParams();// 开启一个客户端 HTTP 请求this.httpClient = new DefaultHttpClient(this.httpParameters);}/*** 读取远程数据** @throws IOException*/protected void getInputStream() throws IOException{// 接收远程输入流InputStream inStream = this.httpResponse.getEntity().getContent();// 分段读取输入流数据ByteArrayOutputStream baos = new ByteArrayOutputStream();byte[] buf = new byte[1024];int len = -1;while ((len = inStream.read(buf)) != -1) {baos.write(buf, 0, len);}// 将数据转换为字符串保存this.inputContent = new String(baos.toByteArray());// 数据接收完毕退出inStream.close();// 获取请求返回的状态码this.statusCode = this.httpResponse.getStatusLine().getStatusCode();}/*** 关闭连接管理器释放资源*/protected void shutdownHttpClient(){if (this.httpClient != null && this.httpClient.getConnectionManager() != null) {this.httpClient.getConnectionManager().shutdown();}}
}

MainActivity.java

这个我就只写事件部分了

    public void doClick(View view){ZHttpRequest request = new ZHttpRequest();String url = "";TextView textView = (TextView) findViewById(R.id.showContent);String content = "空内容";try {if (view.getId() == R.id.doGet) {url = "http://www.baidu.com";content = "GET数据：" + request.get(url);} else {url = "http://192.168.1.6/test.php";HashMap<String, String> datas = new HashMap<String, String>();datas.put("p1", "abc");datas.put("p2", "中文");datas.put("p3", "abc中文cba");datas.put("pic", this.picPath);HashMap<String, String> files = new HashMap<String, String>();files.put("file", this.picPath);content = "POST数据：" + request.post(url, datas, files);}} catch (IOException e) {content = "IO异常：" + e.getMessage();} catch (Exception e) {content = "异常：" + e.getMessage();}textView.setText(content);}

其中的 this.picPath 就是指定的SD卡中的相片路径 String 类型

activity_main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical"><ScrollViewandroid:layout_width="fill_parent"android:layout_height="fill_parent"><LinearLayoutandroid:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical"><Buttonandroid:id="@+id/doGet"android:layout_width="fill_parent"android:layout_height="wrap_content"android:padding="10dp"android:layout_marginBottom="10dp"android:text="GET请求"android:onClick="doClick"/><Buttonandroid:id="@+id/doPost"android:layout_width="fill_parent"android:layout_height="wrap_content"android:padding="10dp"android:layout_marginBottom="10dp"android:text="POST请求"android:onClick="doClick"/><Buttonandroid:id="@+id/doPhoto"android:layout_width="fill_parent"android:layout_height="wrap_content"android:padding="10dp"android:layout_marginBottom="10dp"android:text="拍照"android:onClick="doPhoto"/><ImageViewandroid:id="@+id/showPhoto"android:layout_width="fill_parent"android:layout_height="250dp"android:scaleType="centerCrop"android:src="@drawable/add"android:layout_marginBottom="10dp"/><TextViewandroid:id="@+id/showContent"android:layout_width="fill_parent"android:layout_height="wrap_content"android:layout_marginBottom="10dp"/></LinearLayout></ScrollView>
</LinearLayout>

由于我现在对Java 还不是很熟悉，只看过一些视频教程，实际开发经验不多，我按自己的理解写的注释，不过应该不会有什么太大问题吧，如有错误请指出，谢谢！