我这是从tomcat的一个目录里得到一个流,然后下载到本地..但是如果我要下载具体的一个文件该怎么办啊..那个fileName该增加到哪里.
public void read(String filePath,String fileName) {
try {
URL ur = new URL("http://localhost:8080/ftpdowns/MyServlet");
HttpURLConnection conn = (HttpURLConnection) ur.openConnection();
conn.connect();
InputStream is = conn.getInputStream();
OutputStream os = new FileOutputStream(filePath);
byte[] bs = new byte[1024];
int len;
while ((len = is.read(bs)) != -1) {
os.write(bs, 0, len);
}
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public void read(String filePath,String fileName) {
try {
URL ur = new URL("http://localhost:8080/ftpdowns/MyServlet");
HttpURLConnection conn = (HttpURLConnection) ur.openConnection();
conn.connect();
InputStream is = conn.getInputStream();
OutputStream os = new FileOutputStream(filePath);
byte[] bs = new byte[1024];
int len;
while ((len = is.read(bs)) != -1) {
os.write(bs, 0, len);
}
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
import java.net.*;
import java.io.*;public class Test{
public static void main(String[] args){
new Test().read("D:/baidu.html");
} public void read(String fileName) {
try {
URL ur = new URL("http://www.baidu.com:80/");
HttpURLConnection conn = (HttpURLConnection) ur.openConnection();
conn.connect();
InputStream is = conn.getInputStream();
OutputStream os = new FileOutputStream(fileName);
byte[] bs = new byte[1024];
int len;
while ((len = is.read(bs)) != -1) {
os.write(bs, 0, len);
}
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
};
BufferedReader br=new BufferedReader(isr);
FileOutputStream fos=new FileOutputStream("D:/baidu.html");
while((strLine=br.readLine())!=null)
{
fos.write(strLine.getBytes());
}如果图片之类的\n也属于文件一部分的InputStreamReader isr=new InputStreamReader(is);
FileOutputStream fos=new FileOutputStream("D:/baidu.html");
while((strLine=br.readLine())!=null)
int data;
while((data=is.read())!=-1)
{
fos.write(data);
}
应该是:
如果你你读取的是图像的文件建议使用字节流读取 InputStream is=urlConn.getInputStream();
FileOutputStream fos=new FileOutputStream("D:\\2.gif");
int data;
while((data=is.read())!=-1)
{
fos.write(data);
}
如果是html的文件InputStream is=urlConn.getInputStream();
InputStreamReader isr=new InputStreamReader(is);
BufferedReader br=new BufferedReader(isr);
FileOutputStream fos=new FileOutputStream("2.html");
String strLine;
while((strLine=br.readLine())!=null)
{
fos.write(strLine.getBytes());}