URLEncode() 是我桌面上的图像文件，而不是 url 中的图像
URLEncode() an image file on my desktop instead of an image at a url
我目前有代码使用 URLEncoder 形成一个数据字符串，然后发送到 api。
它url 对网络上的图像进行编码。
我想对其进行更改，使其 url 改为在我的桌面上对图像进行编码。
请问我应该怎么做？是否只是我需要使用不同的语法，或者我是否需要解析桌面上的路径以便 URLEncoder 可读？
代码如下。感谢阅读
url = new URL("https://api.imgur.com/3/image");
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
String data = URLEncoder.encode("image", "UTF-8") + "="
//what i want but doesnt work
+ URLEncoder.encode("C:\Users\J\Desktop\test5.jpg", "UTF-8");
// what works but i dont want
+ URLEncoder.encode("http://i.imgur.com/FB9OZWQ.jpg", "UTF-8");
conn.setDoOutput(true);
conn.setDoInput(true);
conn.setRequestMethod("POST");
conn.setRequestProperty("Authorization", "Client-ID " + clientID);
conn.setRequestMethod("POST");
conn.setRequestProperty("Content-Type",
"application/x-www-form-urlencoded");
conn.connect();
StringBuilder stb = new StringBuilder();
OutputStreamWriter wr = new OutputStreamWriter(conn.getOutputStream());
wr.write(data);
整个class
public class UploadController {
public static String getImgurContent(String clientID) throws Exception {
// clientID = "b290a88ad882073";
URL url;
url = new URL("https://api.imgur.com/3/image");
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
String data = URLEncoder.encode("image", "UTF-8") + "="
//what i want but doesnt work
+ URLEncoder.encode("C:\Users\J\Desktop\test5.jpg", "UTF-8");
// what works but i dont want
+ URLEncoder.encode("http://i.imgur.com/FB9OZWQ.jpg", "UTF-8");
conn.setDoOutput(true);
conn.setDoInput(true);
conn.setRequestMethod("POST");
conn.setRequestProperty("Authorization", "Client-ID " + clientID);
conn.setRequestMethod("POST");
conn.setRequestProperty("Content-Type",
"application/x-www-form-urlencoded");
conn.connect();
StringBuilder stb = new StringBuilder();
OutputStreamWriter wr = new OutputStreamWriter(conn.getOutputStream());
wr.write(data);
wr.flush();
// Get the response
BufferedReader rd = new BufferedReader(
new InputStreamReader(conn.getInputStream()));
String line;
while ((line = rd.readLine()) != null) {
stb.append(line).append("\n");
}
wr.close();
rd.close();
System.out.println(stb.toString());
return stb.toString();
}
}
感谢好心的回答者，我已经更新了我的代码如下。但是我仍然收到 404。 base64 看起来像这样
_9j_4AAQSkZJRgABAQEASABIAAD_2wBDAAYEBQ
Imgur api 应该接受它 https://api.imgur.com/endpoints/image 我认为
代码在这里：
public class UploadController {
public static String getImgurContent(String clientID) throws Exception {
// clientID = "b290a88ad882073";
URL url;
url = new URL("https://api.imgur.com/3/image");
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
String file1 = "C:\Users\J\Desktop\test5.jpg";
// convert to base64
FileInputStream imageInFile = new FileInputStream(file1);
byte imageData[] = new byte[(int) file1.length()];
imageInFile.read(imageData);
String convertedImageData = Base64.encodeBase64URLSafeString(imageData);
System.out.println(convertedImageData);
// String data = "image/png" + "base64" + "=" + convertedImageData;
// sample data string
// data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO9TXL0Y4OHwAAAABJRU5ErkJggg==
// String data = URLEncoder.encode("image", "UTF-8") + "="
//what i want but doesnt work
// + URLEncoder.encode("C:\Users\J\Desktop\test5.jpg", "UTF-8");
// what works but i dont want
// + URLEncoder.encode("http://i.imgur.com/FB9OZWQ.jpg", "UTF-8");
conn.setDoOutput(true);
conn.setDoInput(true);
conn.setRequestMethod("POST");
conn.setRequestProperty("Authorization", "Client-ID " + clientID);
conn.setRequestProperty("Content-Type",
"application/x-www-form-urlencoded");
conn.connect();
StringBuilder stb = new StringBuilder();
OutputStreamWriter wr = new OutputStreamWriter(conn.getOutputStream());
wr.write(convertedImageData);
wr.flush();
// Get the response
BufferedReader rd = new BufferedReader(
new InputStreamReader(conn.getInputStream()));
String line;
while ((line = rd.readLine()) != null) {
stb.append(line).append("\n");
}
wr.close();
rd.close();
System.out.println(stb.toString());
return stb.toString();
}
return 消息：
Building g5 1.0-SNAPSHOT
------------------------------------------------------------------------
--- exec-maven-plugin:1.2.1:exec (default-cli) @ g5 ---
_9j_4AAQSkZJRgABAQEASABIAAD_2wBDAAYEBQ
Exception in thread "main" java.io.IOException: Server returned HTTP response code: 400 for URL: https://api.imgur.com/3/image
at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1839)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1440)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:254)
at main.UploadController.getImgurContent(UploadController.java:80)
at main.ImgurMainTest1.main(ImgurMainTest1.java:16)
------------------------------------------------------------------------
BUILD FAILURE
------------------------------------------------------------------------
Total time: 2.003s
Finished at: Wed Apr 22 01:17:49 BST 2015
Final Memory: 5M/109M
------------------------------------------------------------------------
Failed to execute goal org.codehaus.mojo:exec-maven-plugin:1.2.1:exec (default-cli) on project g5: Command execution failed. Process exited with an error: 1 (Exit value: 1) -> [Help 1]
To see the full stack trace of the errors, re-run Maven with the -e switch.
Re-run Maven using the -X switch to enable full debug logging.
For more information about the errors and possible solutions, please read the following articles:
[Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
只是一些避免更多可能性的快速建议：
- 将
HttpURLConnection 更改为 HttpsURLConnection，因为您是通过 SSL 连接但没有利用它。
- "
image" 不需要在 data 变量中进行 URL 编码。
- 您不需要多次将方法设置为
POST :p
但对于您的问题，这是因为当您将 GET 参数发送到服务器时，服务器会在其系统而不是您的系统上对其进行解释。例如，如果 Imgur 的服务器 运行 Windows 具有有效目录和文件 C:\Users\J\Desktop\test5.jpg，服务器将使用该文件而不是您的本地文件。您的问题看起来与 this one, so try looking at the answer 非常相似。祝你好运。 :)
我目前有代码使用 URLEncoder 形成一个数据字符串，然后发送到 api。
它url 对网络上的图像进行编码。
我想对其进行更改，使其 url 改为在我的桌面上对图像进行编码。
请问我应该怎么做？是否只是我需要使用不同的语法，或者我是否需要解析桌面上的路径以便 URLEncoder 可读？
代码如下。感谢阅读
url = new URL("https://api.imgur.com/3/image");
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
String data = URLEncoder.encode("image", "UTF-8") + "="
//what i want but doesnt work
+ URLEncoder.encode("C:\Users\J\Desktop\test5.jpg", "UTF-8");
// what works but i dont want
+ URLEncoder.encode("http://i.imgur.com/FB9OZWQ.jpg", "UTF-8");
conn.setDoOutput(true);
conn.setDoInput(true);
conn.setRequestMethod("POST");
conn.setRequestProperty("Authorization", "Client-ID " + clientID);
conn.setRequestMethod("POST");
conn.setRequestProperty("Content-Type",
"application/x-www-form-urlencoded");
conn.connect();
StringBuilder stb = new StringBuilder();
OutputStreamWriter wr = new OutputStreamWriter(conn.getOutputStream());
wr.write(data);
整个class
public class UploadController {
public static String getImgurContent(String clientID) throws Exception {
// clientID = "b290a88ad882073";
URL url;
url = new URL("https://api.imgur.com/3/image");
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
String data = URLEncoder.encode("image", "UTF-8") + "="
//what i want but doesnt work
+ URLEncoder.encode("C:\Users\J\Desktop\test5.jpg", "UTF-8");
// what works but i dont want
+ URLEncoder.encode("http://i.imgur.com/FB9OZWQ.jpg", "UTF-8");
conn.setDoOutput(true);
conn.setDoInput(true);
conn.setRequestMethod("POST");
conn.setRequestProperty("Authorization", "Client-ID " + clientID);
conn.setRequestMethod("POST");
conn.setRequestProperty("Content-Type",
"application/x-www-form-urlencoded");
conn.connect();
StringBuilder stb = new StringBuilder();
OutputStreamWriter wr = new OutputStreamWriter(conn.getOutputStream());
wr.write(data);
wr.flush();
// Get the response
BufferedReader rd = new BufferedReader(
new InputStreamReader(conn.getInputStream()));
String line;
while ((line = rd.readLine()) != null) {
stb.append(line).append("\n");
}
wr.close();
rd.close();
System.out.println(stb.toString());
return stb.toString();
}
}
感谢好心的回答者，我已经更新了我的代码如下。但是我仍然收到 404。 base64 看起来像这样
_9j_4AAQSkZJRgABAQEASABIAAD_2wBDAAYEBQ
Imgur api 应该接受它 https://api.imgur.com/endpoints/image 我认为
代码在这里：
public class UploadController {
public static String getImgurContent(String clientID) throws Exception {
// clientID = "b290a88ad882073";
URL url;
url = new URL("https://api.imgur.com/3/image");
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
String file1 = "C:\Users\J\Desktop\test5.jpg";
// convert to base64
FileInputStream imageInFile = new FileInputStream(file1);
byte imageData[] = new byte[(int) file1.length()];
imageInFile.read(imageData);
String convertedImageData = Base64.encodeBase64URLSafeString(imageData);
System.out.println(convertedImageData);
// String data = "image/png" + "base64" + "=" + convertedImageData;
// sample data string
// data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO9TXL0Y4OHwAAAABJRU5ErkJggg==
// String data = URLEncoder.encode("image", "UTF-8") + "="
//what i want but doesnt work
// + URLEncoder.encode("C:\Users\J\Desktop\test5.jpg", "UTF-8");
// what works but i dont want
// + URLEncoder.encode("http://i.imgur.com/FB9OZWQ.jpg", "UTF-8");
conn.setDoOutput(true);
conn.setDoInput(true);
conn.setRequestMethod("POST");
conn.setRequestProperty("Authorization", "Client-ID " + clientID);
conn.setRequestProperty("Content-Type",
"application/x-www-form-urlencoded");
conn.connect();
StringBuilder stb = new StringBuilder();
OutputStreamWriter wr = new OutputStreamWriter(conn.getOutputStream());
wr.write(convertedImageData);
wr.flush();
// Get the response
BufferedReader rd = new BufferedReader(
new InputStreamReader(conn.getInputStream()));
String line;
while ((line = rd.readLine()) != null) {
stb.append(line).append("\n");
}
wr.close();
rd.close();
System.out.println(stb.toString());
return stb.toString();
}
return 消息：
Building g5 1.0-SNAPSHOT
------------------------------------------------------------------------
--- exec-maven-plugin:1.2.1:exec (default-cli) @ g5 ---
_9j_4AAQSkZJRgABAQEASABIAAD_2wBDAAYEBQ
Exception in thread "main" java.io.IOException: Server returned HTTP response code: 400 for URL: https://api.imgur.com/3/image
at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1839)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1440)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:254)
at main.UploadController.getImgurContent(UploadController.java:80)
at main.ImgurMainTest1.main(ImgurMainTest1.java:16)
------------------------------------------------------------------------
BUILD FAILURE
------------------------------------------------------------------------
Total time: 2.003s
Finished at: Wed Apr 22 01:17:49 BST 2015
Final Memory: 5M/109M
------------------------------------------------------------------------
Failed to execute goal org.codehaus.mojo:exec-maven-plugin:1.2.1:exec (default-cli) on project g5: Command execution failed. Process exited with an error: 1 (Exit value: 1) -> [Help 1]
To see the full stack trace of the errors, re-run Maven with the -e switch.
Re-run Maven using the -X switch to enable full debug logging.
For more information about the errors and possible solutions, please read the following articles:
[Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
只是一些避免更多可能性的快速建议：
- 将
HttpURLConnection更改为HttpsURLConnection，因为您是通过 SSL 连接但没有利用它。 - "
image" 不需要在data变量中进行 URL 编码。 - 您不需要多次将方法设置为
POST:p
但对于您的问题，这是因为当您将 GET 参数发送到服务器时，服务器会在其系统而不是您的系统上对其进行解释。例如，如果 Imgur 的服务器 运行 Windows 具有有效目录和文件 C:\Users\J\Desktop\test5.jpg，服务器将使用该文件而不是您的本地文件。您的问题看起来与 this one, so try looking at the answer 非常相似。祝你好运。 :)