java.io.IOException:服务器返回非正常状态:404
资料来源: 为什么它不返回状态?我正在访问godaddy上的文件管理器 MultipartFileUploader.javajava.io.IOException:服务器返回非正常状态:404,java,netbeans,Java,Netbeans,资料来源: 为什么它不返回状态?我正在访问godaddy上的文件管理器 MultipartFileUploader.java import java.io.File; import java.io.IOException; import java.util.List; public class MultipartFileUploader { public static void main(String[] args) { String charset = "UTF-8"; F
import java.io.File;
import java.io.IOException;
import java.util.List;
public class MultipartFileUploader {
public static void main(String[] args) {
String charset = "UTF-8";
File uploadFile1 = new File("C:/Users/jimmy/Pictures/Artist/TJ Monterde.jpg");
File uploadFile2 = new File("C:/Users/jimmy/Pictures/Artist/Mariah Carey.jpg");
String requestURL = "http://jamthesis.com/images";
try {
MultipartUtility multipart = new MultipartUtility(requestURL, charset);
//multipart.addHeaderField("User-Agent", "CodeJava");
//multipart.addHeaderField("Test-Header", "Header-Value");
//multipart.addFormField("description", "Cool Pictures");
//multipart.addFormField("keywords", "Java,upload,Spring");
multipart.addFilePart("fileUpload", uploadFile1);
multipart.addFilePart("fileUpload", uploadFile2);
List<String> response = multipart.finish();
System.out.println("SERVER REPLIED:");
for (String line : response) {
System.out.println(line);
}
} catch (IOException ex) {
System.err.println(ex);
}
} }
导入java.io.File;
导入java.io.IOException;
导入java.util.List;
公共类多部分文件上载程序{
公共静态void main(字符串[]args){
字符串charset=“UTF-8”;
File uploadFile1=新文件(“C:/Users/jimmy/Pictures/Artist/TJ Monterde.jpg”);
File uploadFile2=新文件(“C:/Users/jimmy/Pictures/Artist/Mariah Carey.jpg”);
字符串requestURL=”http://jamthesis.com/images";
试一试{
multipartity multipart=新的multipartity(请求URL,字符集);
//addHeaderField(“用户代理”、“代码Java”);
//多部分addHeaderField(“测试标头”、“标头值”);
//多部分addFormField(“描述”,“酷图片”);
//addFormField(“关键字”、“Java、upload、Spring”);
multipart.addFilePart(“fileUpload”,uploadFile1);
multipart.addFilePart(“fileUpload”,uploadFile2);
列表响应=multipart.finish();
System.out.println(“服务器回复:”);
for(字符串行:响应){
系统输出打印项次(行);
}
}捕获(IOEX异常){
系统错误打印项次(ex);
}
} }
multipartity.java
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.util.ArrayList;
import java.util.List;
/**
* This utility class provides an abstraction layer for sending multipart
HTTP
* POST requests to a web server.
* @author www.codejava.net
*
*/
public class MultipartUtility {
private final String boundary;
private static final String LINE_FEED = "\r\n";
private HttpURLConnection httpConn;
private String charset;
private OutputStream outputStream;
private PrintWriter writer;
/**
* This constructor initializes a new HTTP POST request with content type
* is set to multipart/form-data
* @param requestURL
* @param charset
* @throws IOException
*/
public MultipartUtility(String requestURL, String charset)
throws IOException {
this.charset = charset;
// creates a unique boundary based on time stamp
boundary = "===" + System.currentTimeMillis() + "===";
URL url = new URL(requestURL);
httpConn = (HttpURLConnection) url.openConnection();
httpConn.setUseCaches(false);
httpConn.setDoOutput(true); // indicates POST method
httpConn.setDoInput(true);
httpConn.setRequestProperty("Content-Type",
"multipart/form-data; boundary=" + boundary);
httpConn.setRequestProperty("User-Agent", "CodeJava Agent");
httpConn.setRequestProperty("Test", "Bonjour");
outputStream = httpConn.getOutputStream();
writer = new PrintWriter(new OutputStreamWriter(outputStream, charset),
true);
}
/**
* Adds a form field to the request
* @param name field name
* @param value field value
*/
public void addFormField(String name, String value) {
writer.append("--" + boundary).append(LINE_FEED);
writer.append("Content-Disposition: form-data; name=\"" + name + "\"")
.append(LINE_FEED);
writer.append("Content-Type: text/plain; charset=" + charset).append(
LINE_FEED);
writer.append(LINE_FEED);
writer.append(value).append(LINE_FEED);
writer.flush();
}
/**
* Adds a upload file section to the request
* @param fieldName name attribute in <input type="file" name="..." />
* @param uploadFile a File to be uploaded
* @throws IOException
*/
public void addFilePart(String fieldName, File uploadFile)
throws IOException {
String fileName = uploadFile.getName();
writer.append("--" + boundary).append(LINE_FEED);
writer.append(
"Content-Disposition: form-data; name=\"" + fieldName
+ "\"; filename=\"" + fileName + "\"")
.append(LINE_FEED);
writer.append(
"Content-Type: "
+ URLConnection.guessContentTypeFromName(fileName))
.append(LINE_FEED);
writer.append("Content-Transfer-Encoding: binary").append(LINE_FEED);
writer.append(LINE_FEED);
writer.flush();
FileInputStream inputStream = new FileInputStream(uploadFile);
byte[] buffer = new byte[4096];
int bytesRead = -1;
while ((bytesRead = inputStream.read(buffer)) != -1) {
outputStream.write(buffer, 0, bytesRead);
}
outputStream.flush();
inputStream.close();
writer.append(LINE_FEED);
writer.flush();
}
/**
* Adds a header field to the request.
* @param name - name of the header field
* @param value - value of the header field
*/
public void addHeaderField(String name, String value) {
writer.append(name + ": " + value).append(LINE_FEED);
writer.flush();
}
/**
* Completes the request and receives response from the server.
* @return a list of Strings as response in case the server returned
* status OK, otherwise an exception is thrown.
* @throws IOException
*/
public List<String> finish() throws IOException {
List<String> response = new ArrayList<String>();
writer.append(LINE_FEED).flush();
writer.append("--" + boundary + "--").append(LINE_FEED);
writer.close();
// checks server's status code first
int status = httpConn.getResponseCode();
if (status == HttpURLConnection.HTTP_OK) {
BufferedReader reader = new BufferedReader(new InputStreamReader(
httpConn.getInputStream()));
String line = null;
while ((line = reader.readLine()) != null) {
response.add(line);
}
reader.close();
httpConn.disconnect();
} else {
throw new IOException("Server returned non-OK status: " + status);
}
return response;
} }
导入java.io.BufferedReader;
导入java.io.File;
导入java.io.FileInputStream;
导入java.io.IOException;
导入java.io.InputStreamReader;
导入java.io.OutputStream;
导入java.io.OutputStreamWriter;
导入java.io.PrintWriter;
导入java.net.HttpURLConnection;
导入java.net.URL;
导入java.net.URLConnection;
导入java.util.ArrayList;
导入java.util.List;
/**
*这个实用程序类为发送多部分提供了一个抽象层
超文本传输协议
*将请求发布到web服务器。
*@author www.codejava.net
*
*/
公共类多机性{
私有最终字符串边界;
私有静态最终字符串行\u FEED=“\r\n”;
专用HttpURLConnection httpConn;
私有字符串字符集;
私有输出流输出流;
私人版画作家;
/**
*此构造函数初始化内容类型为的新HTTP POST请求
*设置为多部分/表单数据
*@param requestURL
*@param字符集
*@抛出异常
*/
公共多功能(字符串请求URL、字符串字符集)
抛出IOException{
this.charset=charset;
//基于时间戳创建唯一边界
boundary=“==”+System.currentTimeMillis()+”==”;
URL=新URL(请求URL);
httpConn=(HttpURLConnection)url.openConnection();
httpConn.setUseCaches(假);
httpConn.setDoOutput(true);//表示POST方法
httpConn.setDoInput(真);
httpConn.setRequestProperty(“内容类型”,
“多部分/表单数据;边界=”+边界);
setRequestProperty(“用户代理”、“代码Java代理”);
httpConn.setRequestProperty(“测试”,“你好”);
outputStream=httpConn.getOutputStream();
writer=新的PrintWriter(新的OutputStreamWriter(outputStream,字符集),
正确的);
}
/**
*将表单字段添加到请求中
*@param name字段名
*@param值字段值
*/
public void addFormField(字符串名称、字符串值){
writer.append(“-”+边界).append(换行符);
writer.append(“内容处置:表单数据;名称=\”“+name+\”“”)
.append(换行符);
writer.append(“内容类型:text/plain;charset=“+charset”).append(
线路(U馈电);
writer.append(换行符);
writer.append(值).append(换行符);
writer.flush();
}
/**
*将上载文件节添加到请求中
*中的@param fieldName属性
*@param uploadFile要上载的文件
*@抛出异常
*/
public void addFilePart(字符串字段名,文件上传文件)
抛出IOException{
字符串文件名=uploadFile.getName();
writer.append(“-”+边界).append(换行符);
writer.append(
“内容处置:表单数据;名称=\”“+fieldName”
+“\”文件名=\”+文件名+“\”)
.append(换行符);
writer.append(
“内容类型:”
+URLConnection.guessContentTypeFromName(文件名))
.append(换行符);
writer.append(“内容传输编码:二进制”).append(换行符);
writer.append(换行符);
writer.flush();
FileInputStream inputStream=新的FileInputStream(上传文件);
字节[]缓冲区=新字节[4096];
int字节读取=-1;
而((bytesRead=inputStream.read(缓冲区))!=-1){
写入(缓冲区,0,字节读取);
}
outputStream.flush();
inputStream.close();
writer.append(换行符);
writer.flush();
}
/**
*向请求添加标题字段。
*@param name-标题字段的名称
*@param value-标题字段的值
*/
public void addHeaderField(字符串名称、字符串值){
writer.append(name+”:“+value).append(LINE\u FEED);
writer.flush();
}
/**
*完成请求并从服务器接收响应。
*@返回字符串列表作为服务器返回时的响应
*状态为OK,否则将引发异常。
*@抛出异常
*/
public List finish()引发IOException{
列表响应=新建ArrayList();
writer.append(LINE_FEED.flush();
writer.append(“-”+边界+“-”).append(换行符);
writer.close();
//首先检查服务器的状态代码
int status=httpConn.getResponseCode();
if(status==HttpURLConnection.HTTP\u OK){
BufferedReader reader=新的BufferedReader(新的InputStreamReader(
httpConn.getInputStream());
字符串行=null;
而((line=reader.readLine())!=null){
响应。添加(行);
}
reader.close();
httpConn.disconnect();
}否则{
抛出新IOException(“服务器返回非OK状态:+状态”);
}
返回响应;
} }