完成像带有文件的用户数据表单的上传，而且可以上传多个文件，这在用户注册并拍照时尤其有用。
1 import java.io.BufferedReader;
2 import java.io.ByteArrayOutputStream;
3 import java.io.DataOutputStream;
4 import java.io.InputStream;
5 import java.io.InputStreamReader;
6 import java.io.OutputStream;
7 import java.net.HttpURLConnection;
8 import java.net.InetAddress;
9 import java.net.Socket;
10 import java.net.URL;
11 import java.net.URLEncoder;
12 import java.util.ArrayList;
13 import java.util.List;
14 import java.util.Map;
15
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.HttpPost;
21 import org.apache.http.impl.client.DefaultHttpClient;
22 import org.apache.http.message.BasicNameValuePair;
23
24 public class HTTPPost {
25
26 /**
27 * 直接通过 HTTP 协议提交数据到服务器，实现如下表单提交功能
28 * <FORM METHOD=POST ACTION="http://192.168.1.103:8080/ssi/fileload/test.do"
29 * enctype="multipart/form-data">
30 * <INPUT TYPE="text" NAME="name">
31 * <INPUT TYPE="text" NAME="id">
32 * <INPUT TYPE="file" name="imagefile"/>
33 * <INPUT TYPE="file" name="zip"/>
34 * </FORM>
35 */
36 //enum FormFile;
37 /*
38 * @parm path 上传路径（注：避免使用 localhost 或 127.0.0.1这样的路径测试，
39 * 因为它会指向手机模拟器，可以使用 http://192.168.1.103:8080 这样的路径测试)
40 * @parm parms 请求参数 key 为参数名，value 为参数值
41 * @parm file 上传文件
42 */
43 public static boolean post(String path, Map<String, String>params, FormFile[] files) throws Exception{
44
45 final String BOUNDARY = "-----------------------------" +
46 "7da2137580612"; // 数据分割线
47 final String endline = "--"+BOUNDARY+"--\r\n"; // 数据结束标志
48 int fileDataLength = 0;
49
50 for(FormFile uploadFile : files){
51 // 得到文件类型数据的总长度
52 StringBuilder fileExplain = new StringBuilder();
53 fileExplain.append("--");
54 fileExplain.append(BOUNDARY);
55 fileExplain.append("\r\n");
56 fileExplain.append("Content-Dispostion: form-data;name=\"" +
57 uploadFile.getParameterName()+"\";filename=\""+
58 uploadFile.getFilname()+"\"\r\n");
59 fileExplain.append("Content-Type: "+
60 uploadFile.getContentType()+"\r\n\r\n");
61 fileExplain.append("\r\n");
62
63 fileDataLength += fileExplain.length();
64 if(uploadFile.getInStream()!=null){
65 fileDataLength += uploadFile.getFile().length();
66 }else{
67 fileDataLength += uploadFile.getData().length;
68 }
69 }
70 StringBuilder textEntry = new StringBuilder();
71 for(Map.Entry<String, String> entry : params.entrySet()){
72 // 构造文本类型参数的实体数据
73 textEntry.append("--");
74 textEntry.append(BOUNDARY);
75 textEntry.append("\r\n");
76 textEntry.append("Content-Disposition: form-data; name=\""+
77 entry.getKey()+"\"\r\n\r\n");
78 textEntry.append(entry.getValue());
79 textEntry.append("\r\n");
80 }
81 // 计算传输给服务器的实体数据总长度
82 int datalength = textEntry.toString().getBytes().length +
83 fileDataLength + endline.getBytes().length;
84 URL url = new URL(path);
85 int port = url.getPort() == -1 ? 80 : url.getPort();
86 Socket socket = new Socket(InetAddress.getByName(url.getHost()),port);
87 OutputStream outStream = socket.getOutputStream();
88 // 下面完成 HTTP 请求头的发送
89 String requestmethod = "POST" + url.getPath()+"HTTP/1.1\r\n";
90 outStream.write(requestmethod.getBytes());
91 String accept = "Accept: image/gif, image/jpeg, image/pjpeg," +
92 "image/pjpeg, application/x-shockwave-flash, application/xaml+xml," +
93 "application/vnd.ms-xpsdocument, application/x-ms-xbap," +
94 "application/x-ms-application, application/vnd.ms-excel," +
95 "application/vnd.ms-powerpoint, application/msword, */*\r\n";
96 outStream.write(accept.getBytes());
97 String language = "Accept-Language: zh-CN\r\n";
98 outStream.write(language.getBytes());
99 String contenttype = "Content-Type: multipart/form-data;boundary="+
100 BOUNDARY + "\r\n";
101 outStream.write(contenttype.getBytes());
102 String contentlength = "Content-Length: "+ datalength + "\r\n";
103 outStream.write(contentlength.getBytes());
104 String alive = "Connection: Keep-Alive\r\n";
105 outStream.write(alive.getBytes());
106 String host = "Host:" + url.getHost() + ":" + port + "\r\n";
107 outStream.write(host.getBytes());
108 // 写完 HTTP 请求头后根据 HTTP 协议再写一个回车换行
109 outStream.write("\r\n".getBytes());
110 // 把所有文本类型的实体数据发送出来
111 outStream.write(textEntry.toString().getBytes());
112 // 把所有文件类型的实体数据发送出来
113 for(FormFile uploadFile : files){
114 StringBuilder fileEntity = new StringBuilder();
115 fileEntity.append("--");
116 fileEntity.append(BOUNDARY);
117 fileEntity.append("\r\n");
118 fileEntity.append("Content-Disposition: form-data;name=\""+
119 uploadFile.getParameterName()+"\";filename=\""+
120 uploadFile.getFilname()+"\"\r\n");
121 fileEntity.append("Content-Type: "+ uploadFile.getContentType()+"\r\n\r\n");
122 outStream.write(fileEntity.toString().getBytes());
123 if(uploadFile.getInStream() != null){
124 byte[] buffer = new byte[1024];
125 int len = 0;
126 while((len = uploadFile.getInStream().read(buffer,0,1024)) != -1){
127 outStream.write(buffer, 0, len);
128 }
129 uploadFile.getInStream().close();
130 }else{
131 outStream.write(uploadFile.getData(),0,uploadFile.getData().length);
132 }
133 outStream.write("\r\n".getBytes());
134 }
135 // 下面发送数据结束标志，表示数据已经结束
136 outStream.write(endline.getBytes());
137 BufferedReader reader = new BufferedReader(new
138 InputStreamReader(socket.getInputStream()));
139 if(reader.readLine().indexOf("200") == -1){
140 // 读取 Web 服务器返回的数据，判断请求码是否为200，如果不是200，代表请求失败
141 return false;
142 }
143 outStream.flush();
144 outStream.close();
145 reader.close();
146 socket.close();
147 return true;
148 }
149
150 /**
151 * 提交数据到服务器
152 * @param path 上传路径
153 * @param params 请求参数 key 为参数名， value 为参数值
154 * @param file 上传文件
155 */
156 public static boolean post(String path, Map<String, String> params, FormFile file)
157 throws Exception{
158 return post(path, params, new FormFile[]{file});
159 }
160
161 /**
162 * 提交数据到服务器
163 * @param path 上传路径
164 * @param params 请求参数 key 为参数名， value 为参数值
165 * @param encode 编码
166 */
167 public static byte[] postFromHttpClient(String path, Map<String, String> params, String encode) throws Exception{
168
169 List<NameValuePair> formparams = new ArrayList<NameValuePair>();
170 // 用于存放请求参数
171 for(Map.Entry<String, String> entry : params.entrySet()){
172 formparams.add(new BasicNameValuePair(entry.getKey(),entry.getValue()));
173 }
174 UrlEncodedFormEntity entity = new UrlEncodedFormEntity(formparams, encode);
175 HttpPost httppost = new HttpPost(path);
176 httppost.setEntity(entity);
177 HttpClient httpclient = new DefaultHttpClient();
178 HttpResponse response = httpclient.execute(httppost);
179 // 发送 post 请求
180 return readStream(response.getEntity().getContent());
181 }
182
183 /**
184 * 发送 请求
185 * @param path 请求路径
186 * @param params 请求参数 key 为参数名， value 为参数值
187 * @param encode 请求参数的编码
188 */
189 public static byte[] post(String path, Map<String, String> params, String encode)throws Exception{
190 //String params = "method=save&name="+URLEncoder.encode("老毕","UTF-8")+"&age=28&";
191 // 需要发送的参数
192 StringBuilder parambuilder = new StringBuilder("");
193 if(params != null && !params.isEmpty()){
194 for(Map.Entry<String, String> entry : params.entrySet()){
195 parambuilder.append(entry.getKey()).append("=").append(URLEncoder.encode(entry.getValue(),encode)).append("&");
196 }
197 parambuilder.deleteCharAt(parambuilder.length()-1);
198 }
199 byte[] data = parambuilder.toString().getBytes();
200 URL url = new URL(path);
201 HttpURLConnection conn = (HttpURLConnection)url.openConnection();
202 conn.setDoOutput(true);
203 conn.setUseCaches(false);
204 conn.setConnectTimeout(5*1000);
205 conn.setRequestMethod("POSST");
206 // 下面设置 http 请求头
207 conn.setRequestProperty("Accept", "image/gif, image/jpeg," +
208 "image/pjpeg, image/pjpeg, application/x-shockwave-flash," +
209 "application/xaml+xml, application/vnd.ms-xpsdocument," +
210 "application/x-ms-xbap, application/x-ms-application," +
211 "application/vnd.ms-excel, application/vnd.ms-powerpoint," +
212 "application/msword, */*");
213 conn.setRequestProperty("Accept-Language", "zh-CN");
214 conn.setRequestProperty("User-Agent", "Mozilla/4.0 " +
215 "(compatible; MSIE 8.0; Windows NT 5.2; Trident/4.0; .NET CLR" +
216 "1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30; .NET CLR" +
217 "3.0.4506.2152; .NET CLR 3.5.30729)");
218 conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
219 conn.setRequestProperty("Content-Length", String.valueOf(data.length));
220 conn.setRequestProperty("Connection", "Keep-Alive");
221 // 发送参数
222 DataOutputStream outStream = new DataOutputStream(conn.getOutputStream());
223 // 发送
224 outStream.write(data);
225 outStream.flush();
226 outStream.close();
227 if(conn.getResponseCode() == 200){
228 return readStream(conn.getInputStream());
229 }
230 return null;
231 }
232
233 /**
234 * 读取流
235 * @param inStream
236 * @return 字节数组
237 * @throws Exception
238 */
239 public static byte[] readStream(InputStream inStream)throws Exception{
240
241 ByteArrayOutputStream outStream = new ByteArrayOutputStream();
242 byte[] buffer = new byte[1024];
243 int len = -1;
244 while((len = inStream.read(buffer)) != -1){
245 outStream.write(buffer, 0, len);
246 }
247 outStream.close();
248 inStream.close();
249 return outStream.toByteArray();
250 }
251
252 }
时间： 2024-08-30 11:16:04