服务器接口：
http请求方式：POST/FORM
http://www.iyouchai.com:8888/upload
输入参数：
file：上传文件名
username：用户名
返回值：
{
fileid: “85635dee-d326-11e3-a001-00163e0202e9.jpg”,
createtime: "2014-05-03 20:13:48 "
}
html 测试格式：
上传图片的代码：
/**
* @Description: TODO(带参，文件上传)
* @param actionUrl
* @param params
* @param files
* @return result
* @throws IOException
*/
public static String post(String actionUrl, Map params,
Map files) throws IOException {
String BOUNDARY = java.util.UUID.randomUUID().toString();
String PREFIX = "--", LINEND = "\r\n";
String MULTIPART_FROM_DATA = "multipart/form-data";
String CHARSET = "UTF-8";
URL uri = new URL(actionUrl);
HttpURLConnection conn = (HttpURLConnection) uri.openConnection();
conn.setReadTimeout(5 * 1000);
conn.setDoInput(true);// 允许输入
conn.setDoOutput(true);// 允许输出
conn.setUseCaches(false);
conn.setRequestMethod("POST"); // Post方式
conn.setRequestProperty("connection", "keep-alive");
conn.setRequestProperty("Charsert", "UTF-8");
conn.setRequestProperty("Content-Type", MULTIPART_FROM_DATA
+ ";boundary=" + BOUNDARY);
// 首先组拼文本类型的参数
StringBuilder sb = new StringBuilder();
for (Map.Entry entry : params.entrySet()) {
sb.append(PREFIX);
sb.append(BOUNDARY);
sb.append(LINEND);
sb.append("Content-Disposition: form-data; name=\""
+ entry.getKey() + "\"" + LINEND);
sb.append("Content-Type: text/plain; charset=" + CHARSET + LINEND);
sb.append("Content-Transfer-Encoding: 8bit" + LINEND);
sb.append(LINEND);
sb.append(entry.getValue());
sb.append(LINEND);
}
DataOutputStream outStream = new DataOutputStream(
conn.getOutputStream());
outStream.write(sb.toString().getBytes());
// 发送文件数据
if (files != null)
for (Map.Entry file : files.entrySet()) {
StringBuilder sb1 = new StringBuilder();
sb1.append(PREFIX);
sb1.append(BOUNDARY);
sb1.append(LINEND);
sb1.append("Content-Disposition: form-data; name=\"file\"; filename=\""
+ file.getKey() + "\"" + LINEND);
sb1.append("Content-Type: application/octet-stream; charset="
+ CHARSET + LINEND);
sb1.append(LINEND);
outStream.write(sb1.toString().getBytes());
InputStream is = new FileInputStream(file.getValue());
Log.i("文件大小", file.getValue().length() + "");
byte[] buffer = new byte[1024];
int len = 0;
while ((len = is.read(buffer)) != -1) {
outStream.write(buffer, 0, len);
}
is.close();
outStream.write(LINEND.getBytes());
}
// 请求结束标志
byte[] end_data = (PREFIX + BOUNDARY + PREFIX + LINEND).getBytes();
outStream.write(end_data);
outStream.flush();
// 得到响应码
int res = conn.getResponseCode();
Log.i("图片上传结果", res + "");
InputStream in = conn.getInputStream();
InputStreamReader isReader = new InputStreamReader(in);
BufferedReader bufReader = new BufferedReader(isReader);
String line = null;
String data = "OK";
while ((line = bufReader.readLine()) == null)
data += line;
if (res == 200) {
int ch;
StringBuilder sb2 = new StringBuilder();
while ((ch = in.read()) != -1) {
sb2.append((char) ch);
}
}
outStream.close();
conn.disconnect();
return in.toString();
} 但是每次返回都是404，not found
不要用浏览器直接去测那个接口， 接口只支持Post 解决方案1
请求地址错误，请加上"/";http://www.iyouchai.com:8888/upload/
你的方法没有提供get方法。如果路径是对的，用网址是可以直接访问的。其显示结果就是空白的页面；如果提供了get方法，就是显示不允许使用此方法。