android 文件上传

android 文件上传的类--完整 可以直接被调用的

public class post {

// 如果是文本的文件的话那么通过map类传递进来如果是文件的话通过FormFile传递进来

public static String post(String actionUrl, Map<String, String> params,

FormFile[] files) throws IOException {

String BOUNDARY = "743520vjdk4e";

String MULTIPART_FROM_DATA = "multipart/form-data";

URL uri = new URL(actionUrl);

HttpURLConnection conn = (HttpURLConnection) uri.openConnection();

conn.setReadTimeout(5 * 1000); // 缓存的最长时间

conn.setDoInput(true);// 允许输入

conn.setDoOutput(true);// 允许输出

conn.setUseCaches(false); // 不允许使用缓存

// 下面的几个值是必须需要设置进去的

conn.setRequestMethod("POST");

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();

// 这个地方使用了Map循环 map循环的方式需要注意一下了

for (Map.Entry<String, String> entry : params.entrySet()) {

sb.append("--");

sb.append(BOUNDARY);

// 回车换行

sb.append("\r\n");

sb.append("Content-Disposition:form-data:name\"" + entry.getKey()

+ "\r\n\r\n");

sb.append(entry.getValue());

sb.append("\r\n");

}

DataOutputStream outStream = new DataOutputStream(conn

.getOutputStream());

outStream.write(sb.toString().getBytes());

// 前面必须是数组才可以

// 发送文件数据

for (FormFile file : files) {

StringBuilder sb1 = new StringBuilder();

sb1.append("---");

sb1.append(BOUNDARY);

sb1.append("\r\n");

// 这个地方没有完

sb1.append("Content-Disposition:form-data:name=\""

+ file.getFormname());

sb1.append("Content-Type" + file.getContentType() + "\r\n\r\n");

outStream.write(sb1.toString().getBytes());

// 先判断formfile里面是否为空 如果不为空的话则写出 获取formfile的data里面的

if (file.getInStream() != null) {

// 提供流的的方式的话就是一边读一边写了

byte[] buffer = new byte[1024];

int len = 0;

while ((len = file.getInStream().read(buffer)) != -1) {

outStream.write(buffer, 0, len);

}

file.getInStream().close();

} else {

outStream.write(file.getData(), 0, file.getData().length);

}

outStream.write("\r\n".getBytes());

}

byte[] end_data = ("--" + BOUNDARY + "\r\n").getBytes();

outStream.write(end_data);

outStream.flush();

// 得到响应号码

int res = conn.getResponseCode();

if (res != 200)

throw new RuntimeException("请求失败 ");

InputStream in = conn.getInputStream();

int ch;

StringBuilder sb2 = new StringBuilder();

while ((ch = in.read()) != -1) {

sb.append((char) ch);

}

outStream.close();

conn.disconnect();

return in.toString();

}

这是相关联的formFIle类的定义

public class FormFile {

// 定义了使用的文件的特点

// 上传文件的数据

private byte[] data;

private InputStream inStream;

// 文件名称

private String fileName;

// 请求参数名称

private String Formnames;

// 内容类型

private String contentType = "application/octet-stream";

public FormFile(byte[] data, String fileName, String formnames,

String contentType) {

this.data = data;

this.fileName = fileName;

Formnames = formnames;

this.contentType = contentType;

}

public FormFile(InputStream inStream, String fileName, String formnames,

String contentType) {

this.inStream = inStream;

this.fileName = fileName;

Formnames = formnames;

this.contentType = contentType;

}

public byte[] getData() {

return data;

}

public void setData(byte[] data) {

this.data = data;

}

public InputStream getInStream() {

return inStream;

}

public void setInStream(InputStream inStream) {

this.inStream = inStream;

}

public String getFileName() {

return fileName;

}

public void setFileName(String fileName) {

this.fileName = fileName;

}

public String getFormnames() {

return Formnames;

}

public void setFormnames(String formnames) {

Formnames = formnames;

}

public String getContentType() {

return contentType;

}

public void setContentType(String contentType) {

this.contentType = contentType;

}