安卓手机程序 ，提示内存溢出?报错

安卓手机端程序第一次上传多图时候，没有错误，然后返回修改重新上传，出现错误报错信息，内存溢出

<p style="font-size:13.3333px;">
	<br>
</p>
<p style="font-size:13.3333px;">
	<br>
</p>
<p style="font-size:13.3333px;">
	<span style="font-family:微软雅黑, 'MS Sans Serif', sans-serif;font-size:16px;line-height:normal;background-color:#FFEDC4;">下面是上传图片</span>
</p>
<p style="font-size:13.3333px;">
	<span style="font-family:微软雅黑, 'MS Sans Serif', sans-serif;font-size:16px;line-height:normal;background-color:#FFEDC4;">try {</span>
</p>
<p style="font-size:13.3333px;">
	<span style="font-family:微软雅黑, 'MS Sans Serif', sans-serif;font-size:16px;line-height:normal;background-color:#FFEDC4;">URL url = new URL(uploadUrl);</span><br>

HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection();
httpURLConnection.setDoInput(true);
httpURLConnection.setDoOutput(true);
httpURLConnection.setUseCaches(true);// 允许使用缓存
httpURLConnection.setRequestMethod("POST");
// 设置Http请求头
httpURLConnection
.setRequestProperty("Connection", "Keep-Alive");
httpURLConnection.setRequestProperty("Charset", "UTF-8");
httpURLConnection.setRequestProperty("Cookie", "JSESSIONID="
+ jsession);// 要加个试试
// 必须在Content-Type 请求头中指定分界符中的任意字符串
httpURLConnection.setRequestProperty("Content-Type",
"multipart/form-data;boundary=" + boundary);

// 定义数据写入流，准备上传文件，，这个tmd就是点了以后就上传，，呵呵，，要保存起来，！！！
DataOutputStream dos = new DataOutputStream(httpURLConnection.getOutputStream());
dos.writeBytes(twoHyphens + boundary + end);
// 设置与上传文件相关的信息
dos.writeBytes("Content-Disposition: form-data; name="file"; filename=""
+ filename.substring(filename.lastIndexOf("/") + 1)
+ """ + end);
dos.writeBytes(end);

FileInputStream fis = new FileInputStream(filename);


byte[] buffer = new byte[8192]; // 8k
int count = 0;
// 读取文件夹内容，并写入OutputStream对象
while ((count = fis.read(buffer)) != -1) {
dos.write(buffer, 0, count);
}
fis.close();
dos.writeBytes(end);
dos.writeBytes(twoHyphens + boundary + twoHyphens + end);
dos.flush();
// 开始读取从服务器传过来的信息
InputStream is = httpURLConnection.getInputStream();
InputStreamReader isr = new InputStreamReader(is, "utf-8");
BufferedReader br = new BufferedReader(isr);
String result = br.readLine() + ";";
pathname += result;


dos.close();
is.close();
} catch (Exception e) {
}

下面是从服务器下载图片

try {
URL url = new URL(uploadUrl);
HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection();
httpURLConnection.setDoInput(true);
httpURLConnection.setDoOutput(true);
httpURLConnection.setUseCaches(true);// 允许使用缓存
httpURLConnection.setRequestMethod("POST");
// 设置Http请求头
httpURLConnection
.setRequestProperty("Connection", "Keep-Alive");
httpURLConnection.setRequestProperty("Charset", "UTF-8");
httpURLConnection.setRequestProperty("Cookie", "JSESSIONID="
+ jsession);// 要加个试试
// 必须在Content-Type 请求头中指定分界符中的任意字符串
httpURLConnection.setRequestProperty("Content-Type",
"multipart/form-data;boundary=" + boundary);


// 定义数据写入流，准备上传文件，，这个tmd就是点了以后就上传，，呵呵，，要保存起来，！！！
DataOutputStream dos = new DataOutputStream(httpURLConnection.getOutputStream());
dos.writeBytes(twoHyphens + boundary + end);
// 设置与上传文件相关的信息
dos.writeBytes("Content-Disposition: form-data; name="file"; filename=""
+ filename.substring(filename.lastIndexOf("/") + 1)
+ """ + end);
dos.writeBytes(end);


FileInputStream fis = new FileInputStream(filename);




byte[] buffer = new byte[8192]; // 8k
int count = 0;
// 读取文件夹内容，并写入OutputStream对象
while ((count = fis.read(buffer)) != -1) {
dos.write(buffer, 0, count);
}
fis.close();
dos.writeBytes(end);
dos.writeBytes(twoHyphens + boundary + twoHyphens + end);
dos.flush();
// 开始读取从服务器传过来的信息
InputStream is = httpURLConnection.getInputStream();
InputStreamReader isr = new InputStreamReader(is, "utf-8");
BufferedReader br = new BufferedReader(isr);
String result = br.readLine() + ";";
pathname += result;




dos.close();
is.close();
} catch (Exception e) {
}