代码语言：javascript复制
/**
* 模拟表单post
*
* @param textMap 文本域
* @param fileMap 文件
*
*/
public static String postForm(String urlStr, Map<String, String> textMap, Map<String, String> fileMap) throws IOException {
String res = "";
HttpURLConnection conn = null;
InputStream inS = null;
OutputStream out = null;
String BOUNDARY = "---------------------------123821742118716"; //boundary就是request头和上传文件内容的分隔符
try {
URL url = new URL(urlStr);
conn = (HttpURLConnection) url.openConnection();
if (conn instanceof HttpsURLConnection) {
((HttpsURLConnection) conn).setSSLSocketFactory(sslSocketFactory);
((HttpsURLConnection) conn).setHostnameVerifier(trustAnyHostnameVerifier);
}
conn.setConnectTimeout(19000);
conn.setReadTimeout(19000);
conn.setDoOutput(true);
conn.setDoInput(true);
conn.setUseCaches(false);
conn.setRequestMethod("POST");
conn.setRequestProperty("Connection", "Keep-Alive");
conn.setRequestProperty("User-Agent", "Mozilla/5.0 (Windows; U; Windows NT 6.1; zh-CN; rv:1.9.2.6)");
conn.setRequestProperty("Content-Type", "multipart/form-data; boundary=" BOUNDARY);
out = new DataOutputStream(conn.getOutputStream());
// text value
if (textMap != null) {
StringBuffer strBuf = new StringBuffer();
Iterator iter = textMap.entrySet().iterator();
while (iter.hasNext()) {
Map.Entry entry = (Map.Entry) iter.next();
String inputName = (String) entry.getKey();
String inputValue = (String) entry.getValue();
if (inputValue == null) {
continue;
}
strBuf.append("rn").append("--").append(BOUNDARY).append("rn");
strBuf.append("Content-Disposition: form-data; name="" inputName ""rnrn");
strBuf.append(inputValue);
}
out.write(strBuf.toString().getBytes());
}
// file
if (fileMap != null) {
Iterator iter = fileMap.entrySet().iterator();
while (iter.hasNext()) {
Map.Entry entry = (Map.Entry) iter.next();
String inputName = (String) entry.getKey();
String inputValue = (String) entry.getValue();
if (inputValue == null) {
continue;
}
File file = new File(inputValue);
String filename = file.getName();
String contentType = new MimetypesFileTypeMap().getContentType(file);
if (filename.endsWith(".png")) {
contentType = "image/png";
} else if (filename.endsWith(".gif")) {
contentType = "image/gif";
} else if (filename.endsWith(".jpg")) {
contentType = "image/jpeg";
}
if (contentType == null || contentType.equals("")) {
contentType = "application/octet-stream";
}
StringBuffer strBuf = new StringBuffer();
strBuf.append("rn").append("--").append(BOUNDARY).append("rn");
strBuf.append("Content-Disposition: form-data; name="" inputName ""; filename="" filename ""rn");
strBuf.append("Content-Type:" contentType "rnrn");
out.write(strBuf.toString().getBytes());
DataInputStream in = new DataInputStream(new FileInputStream(file));
int bytes = 0;
byte[] bufferOut = new byte[1024];
while ((bytes = in.read(bufferOut)) != -1) {
out.write(bufferOut, 0, bytes);
}
}
}
byte[] endData = ("rn--" BOUNDARY "--rn").getBytes();
out.write(endData);
out.flush();
// 读取返回数据
StringBuffer strBuf = new StringBuffer();
inS = conn.getInputStream();
BufferedReader reader = new BufferedReader(new InputStreamReader(inS));
String line = null;
while ((line = reader.readLine()) != null) {
strBuf.append(line).append("n");
}
res = strBuf.toString();
reader.close();
reader = null;
} catch (Exception e) {
e.printStackTrace();
} finally {
if (out != null) {
out.close();
}
if (inS != null) {
inS.close();
}
if (conn != null) {
conn.disconnect();
conn = null;
}
}
return res;
}</pre> 
