[英]how to upload, download file from tomcat server with username,password in swing
我想制作一个程序,连接到本地运行的Tomcat服务器。 使用用户名,密码验证,然后用户便可以在服务器目录中上传文件。 即http:// localhost:8080 / uploadfiles。 从用户定义的文件路径开始,与下载到本地目录相同。
这是一种可能性:下载:
URL url = new URL("http://localhost:8080/uploadfiles");
HttpURLConnection con = (HttpURLConnection)url.openConnection();
try {
con.addRequestProperty("Authorization",
"Basic " + encode64(username + ":" + password));
InputStream in = con.getInputStream();
try {
OutputStream out = new FileOutputStream(outFile);
try {
byte buf[] = new byte[4096];
for (int n = in.read(buf); n > 0; n = in.read(buf)) {
out.write(buf, 0, n);
}
} finally {
out.close();
}
} finally {
in.close();
}
} finally {
con.disconnect();
}
上载:
URL url = new URL("http://localhost:8080/uploadfiles");
HttpURLConnection con = (HttpURLConnection)uploadUrl.openConnection();
try {
con.setDoOutput(true);
con.setRequestMethod("POST");
con.addRequestProperty("Authorization",
"Basic " + encode64(username + ":" + password));
OutputStream out = con.getOutputStream();
try {
InputStream in = new FileInputStream(inFile);
try {
byte buffer[] = new byte[4096];
for (int n = in.read(buffer); n > 0; n = in.read(buffer)) {
out.write(buffer, 0, n);
}
} finally {
in.close();
}
} finally {
out.close();
}
int code = con.getResponseCode();
if (code != HttpURLConnection.HTTP_OK) {
String msg = con.getResponseMessage();
throw new IOException("HTTP Error " + code + ": " + msg);
}
} finally {
con.disconnect();
}
现在,在服务器端,您将需要区分GET和POST请求并进行相应处理。 您将需要一个库来处理上传,例如apache FileUpload
哦,在客户端,您将需要一个执行Base64编码的库,例如apache commons编解码器
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