1 package org.mobiletrain.utils;
2
3 import java.io.BufferedInputStream;
4 import java.io.BufferedOutputStream;
5 import java.io.BufferedReader;
6 import java.io.ByteArrayOutputStream;
7 import java.io.FileNotFoundException;
8 import java.io.FileOutputStream;
9 import java.io.IOException;
10 import java.util.ArrayList;
11 import java.util.HashMap;
12 import java.util.List;
13 import java.util.Map;
14
15 import org.apache.http.HttpEntity;
16 import org.apache.http.HttpResponse;
17 import org.apache.http.NameValuePair;
18 import org.apache.http.client.HttpClient;
19 import org.apache.http.client.entity.UrlEncodedFormEntity;
20 import org.apache.http.client.methods.HttpGet;
21 import org.apache.http.client.methods.HttpPost;
22 import org.apache.http.impl.client.DefaultHttpClient;
23 import org.apache.http.message.BasicNameValuePair;
24 import org.apache.http.util.EntityUtils;
25
26 /**
27 * 请求网络的工具类
28 * 需导入三个jar包
commons-logging-1.1.1.jar
httpclient-4.1.2.jar
httpcore-4.1.2.jar
29 * 31 */
32 public class HttpHelpers {
33
34 /**
35 * 下载图片 保存到byte类型的数组中
36 *
37 * @param path
38 * 地址
39 * @return byte[]
40 */
41 public static byte[] downLoadImg(String path) {
42 BufferedInputStream bis = null;
43 try {
44 // 1,创建HttpClient对象 Android6.0之前可以使用
45 HttpClient httpClient = new DefaultHttpClient();
46 // 2,创建请求对象+指定地址
47 HttpGet httpGet = new HttpGet(path);
48 // 3,执行请求 获得HttpResponse对象
49 HttpResponse response = httpClient.execute(httpGet);
50 // 4,获得响应码
51 int code = response.getStatusLine().getStatusCode();
52 if (code == 200) {
53 // 5,得到响应的HttpEntity对象
54 HttpEntity responseEntity = response.getEntity();
55 // 方法一
56 // bis = new BufferedInputStream(responseEntity.getContent());
57 // byte b[] = toByteArray(bis);
58 // return b;
59
60 // 方法二
61 return EntityUtils.toByteArray(responseEntity);
62
63 }
64
65 } catch (IOException e) {
66 // TODO Auto-generated catch block
67 e.printStackTrace();
68 } finally {
69 if (bis != null) {
70 try {
71 bis.close();
72 } catch (IOException e) {
73 // TODO Auto-generated catch block
74 e.printStackTrace();
75 }
76 }
77 }
78
79 return null;
80
81 }
82
83 /**
84 * 把图片下载到本地磁盘
85 *
86 * @param path
87 */
88 public static void downLoadImgToLocal(String path) {
89 BufferedInputStream bis = null;
90 BufferedOutputStream boStream = null;
91 try {
92 // 1,创建HttpClient对象 Android6.0之前可以使用
93 HttpClient httpClient = new DefaultHttpClient();
94 // 2,创建请求对象+指定地址
95 HttpGet httpGet = new HttpGet(path);
96 // 3,执行请求 获得HttpResponse对象
97 HttpResponse response = httpClient.execute(httpGet);
98 // 4,获得响应码
99 int code = response.getStatusLine().getStatusCode();
100 if (code == 200) {
101 // 5,得到响应的HttpEntity对象
102 HttpEntity responseEntity = response.getEntity();
103 // 方法一
104 // bis = new BufferedInputStream(responseEntity.getContent());
105 // byte b[] = toByteArray(bis);
106
107 // 方法二
108 byte b[] = EntityUtils.toByteArray(responseEntity);
109 String endsWith = path.substring(path.lastIndexOf("."));
110 boStream = new BufferedOutputStream(new FileOutputStream((int) (Math.random() * 100) + endsWith));
111 boStream.write(b);
112
113 }
114
115 } catch (IOException e) {
116 // TODO Auto-generated catch block
117 e.printStackTrace();
118 } finally {
119 if (bis != null) {
120 try {
121 bis.close();
122 } catch (IOException e) {
123 // TODO Auto-generated catch block
124 e.printStackTrace();
125 }
126 }
127 if (boStream != null) {
128 try {
129 boStream.close();
130 } catch (IOException e) {
131 // TODO Auto-generated catch block
132 e.printStackTrace();
133 }
134 }
135 }
136
137 }
138
139 /**
140 * 从互联网获取文本 json xml
141 *
142 * @param path
143 * 地址
144 * @return 获取到的文本数据
145 */
146
147 public static String getResourceByInternet(String path) {
148 BufferedReader bReader = null;
149 try {
150 // 1,创建HttpClient对象 Android6.0之前可以使用
151 HttpClient httpClient = new DefaultHttpClient();
152 // 2,创建请求对象+指定地址
153 HttpGet httpGet = new HttpGet(path);
154 // 3,执行请求 获得HttpResponse对象
155 HttpResponse response = httpClient.execute(httpGet);
156 // 4,获得响应码
157 int code = response.getStatusLine().getStatusCode();
158 if (code == 200) {
159 // 得到HttpEntity对象
160 HttpEntity responseEntity = response.getEntity();
161 // 方法一
162 // bReader = new BufferedReader(new
163 // InputStreamReader(responseEntity.getContent()));
164 // StringBuilder sbBuilder = new StringBuilder();
165 // String line = null;
166 // while ((line = bReader.readLine()) != null) {
167 // sbBuilder.append(line);
168 // }
169 //
170 // return sbBuilder.toString();
171
172 // 方法二
173 return EntityUtils.toString(responseEntity);
174
175 }
176
177 } catch (IOException e) {
178 // TODO Auto-generated catch block
179 e.printStackTrace();
180 } finally {
181 if (bReader != null) {
182 try {
183 bReader.close();
184 } catch (IOException e) {
185 // TODO Auto-generated catch block
186 e.printStackTrace();
187 }
188 }
189 }
190
191 return null;
192
193 }
194
195 public static byte[] toByteArray(BufferedInputStream bufferedInputStream) {
196 byte b[] = new byte[1024 * 1024];
197 int len = 0;
198 ByteArrayOutputStream baos = new ByteArrayOutputStream();
199 try {
200 while ((len = bufferedInputStream.read(b)) != -1) {
201 baos.write(b, 0, len);
202 }
203 } catch (IOException e) {
204 // TODO Auto-generated catch block
205 e.printStackTrace();
206 }
207
208 return baos.toByteArray();
209
210 }
211
212 public static String upLoadData(String path, Map<String, String> map) {
213 BufferedReader bReader = null;
214 try {
215 // 1,创建HttpClient对象 Android6.0之前可以使用
216 HttpClient httpClient = new DefaultHttpClient();
217 // 2,创建请求对象+指定地址
218 HttpPost httpPost = new HttpPost(path);
219 // 设置用于发送到服务端的参数
220 List<NameValuePair> list = new ArrayList<NameValuePair>();
221
222 for (String string : map.keySet()) {
223 list.add(new BasicNameValuePair(string, map.get(string)));
224 }
225 HttpEntity requestEntity = new UrlEncodedFormEntity(list, "gbk");
226 httpPost.setEntity(requestEntity);
227
228 // 3,执行请求 获得HttpResponse对象
229 HttpResponse response = httpClient.execute(httpPost);
230 // 4,获得响应码
231 int code = response.getStatusLine().getStatusCode();
232 if (code == 200) {
233 // 得到HttpEntity对象
234 HttpEntity responseEntity = response.getEntity();
235 // 方法一
236 // bReader = new BufferedReader(new
237 // InputStreamReader(responseEntity.getContent()));
238 // StringBuilder sbBuilder = new StringBuilder();
239 // String line = null;
240 // while ((line = bReader.readLine()) != null) {
241 // sbBuilder.append(line);
242 // }
243 //
244 // return sbBuilder.toString();
245
246 // 方法二
247 return EntityUtils.toString(responseEntity, "gbk");
248
249 }
250
251 } catch (IOException e) {
252 // TODO Auto-generated catch block
253 e.printStackTrace();
254 } finally {
255 if (bReader != null) {
256 try {
257 bReader.close();
258 } catch (IOException e) {
259 // TODO Auto-generated catch block
260 e.printStackTrace();
261 }
262 }
263 }
264
265 return null;
266
267 }
268
269 public static void main(String[] args) {
270 byte b[] = downLoadImg("http://images.china.cn/attachement/jpg/site1000/20140313/844bf52c7d7c148b8abc05.jpg");
271 BufferedOutputStream bufferedOutputStream;
272 try {
273 bufferedOutputStream = new BufferedOutputStream(new FileOutputStream("ceo.jpg"));
274 // bufferedOutputStream.write(b);
275
276 } catch (FileNotFoundException e1) {
277 // TODO Auto-generated catch block
278 e1.printStackTrace();
279 } catch (IOException e) {
280 // TODO Auto-generated catch block
281 e.printStackTrace();
282 }
283
284 // downLoadImgToLocal("http://images.china.cn/attachement/jpg/site1000/20140313/844bf52c7d7c148b8abc05.jpg");
285
286 // System.out.println(getResourceByInternet("http://www.doukantv.com/api/hot/?type=movie&cli=ipad&sys_ver=7.1.1&ver=2.1"));
287 Map<String, String> map = new HashMap<String, String>();
288 map.put("uname", "张三");
289 map.put("pwd", "admin");
290 System.out.println(upLoadData("http://172.20.136.5:8080/2016_05_27_server/login", map));
291
292 }
293
294 }
