httpclient 應用 檔案上傳 中文編碼問題

      本文講述的是用httpclient通過http協定通路網頁上傳文檔的執行個體。伺服器端的就不用多說了，和一般的上傳是一樣的。下面就講下客戶段。廢話就不多說了，代碼見分曉。

      寫代碼前準備：

          httpclient 3.1  官網下載下傳

          commons-codec-1.4  官網下載下傳

          commons-logging-1.1.1  官網下載下傳

  開始編寫代碼：

package my;

import java.io.BufferedWriter;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.OutputStreamWriter;

import java.util.Date;

import java.util.Properties;

import org.apache.commons.httpclient.HttpClient;

import org.apache.commons.httpclient.HttpException;

import org.apache.commons.httpclient.methods.MultipartPostMethod;

public class Upload {

public static void main(String[] args) {

String message="";

String filepath="";

String url="";

Properties properties = new Properties();

try {

//加載配置檔案

properties.load(new FileInputStream("config.properties"));

url=properties.getProperty("url").trim();

filepath=properties.getProperty("filepath").trim();

properties.clone();

} catch (FileNotFoundException e) {

message="/t找不到配置檔案(config.properties)";

} catch (IOException e) {

message="/t檔案讀取出現異常(config.properties)";

}

if("".equals(message)){

File file=new File(filepath);

if(file.length()>0){

HttpClient client=new HttpClient();

MultipartPostMethod mPost = new MultipartPostMethod(url);

try {

//為什麼沒設定編碼格式呢？後面幫你解答

//添加檔案

mPost.addParameter("upload", file);

} catch (FileNotFoundException e) {

message="/t"+filepath+"/t找不到上傳檔案";

}

//檔案名稱

mPost.addParameter("uploadFileName", file.getName());

int state=0;

if("".equals(message)){

try {

//執行

System.out.println(url);

state=client.executeMethod(mPost);

mPost.releaseConnection();

} catch (HttpException e) {

message="/t"+filepath+" "+String.format("%.2f",file.length()/1024.0f )+"KB/t找不到上傳檔案/t"+url+"/t檔案上傳出現異常";

} catch (IOException e) {

message="/t"+url+"/t連接配接不存在";

}

}

if("".equals(message)){

switch (state) {

case 200:

message="/t"+filepath+" "+String.format("%.2f",file.length()/1024.0f )+"KB/t"+url+"/t檔案上傳成功";

break;

case 404:

message="/t"+filepath+" "+String.format("%.2f",file.length()/1024.0f )+"KB/t"+url+"/t未找到";

break;

case 408:

message="/t"+filepath+" "+String.format("%.2f",file.length()/1024.0f )+"KB/t"+url+"/t連結逾時";

break;

default:

message="/t"+filepath+" "+String.format("%.2f",file.length()/1024.0f )+"KB/t"+url+"/t上傳失敗";

break;

}

}

}else{

message="/t"+filepath+"/t上傳檔案不存在或為空";

file=null;

}

}

try {

//寫日志

BufferedWriter out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream("upload.log", true)));

out.write(new Date().toLocaleString()+message);

out.newLine();

out.flush();

out.close();

} catch (FileNotFoundException e) {

} catch (IOException e) {

}

}

}

config.properties

#待上傳檔案的位址

filepath=D:/文網文我.txt

#上傳位址

url=http://127.0.0.1:9080/tdcreport/tsc.action

關于httpclient亂碼問題我改寫了源碼，下載下傳位址

改寫的地方

org.apache.commons.httpclient.util.EncodingUtil

public static byte[] getAsciiBytes(final String data) {

if (data == null) {

throw new IllegalArgumentException("Parameter may not be null");

}

try {

return data.getBytes("UTF-8");

} catch (UnsupportedEncodingException e) {

throw new HttpClientError("HttpClient requires ASCII support");

}

}

org.apache.commons.httpclient.methods.multipart.StringPart

public StringPart(String name, String value, String charset) {

super(

name,

DEFAULT_CONTENT_TYPE,

charset == null ? "UTF-8" : charset,

DEFAULT_TRANSFER_ENCODING

);

if (value == null) {

throw new IllegalArgumentException("Value may not be null");

}

if (value.indexOf(0) != -1) {

// See RFC 2048, 2.8. "8bit Data"

throw new IllegalArgumentException("NULs may not be present in string parts");

}

this.value = value;

}

org.apache.commons.httpclient.methods.multipart.FilePart

public FilePart(String name, PartSource partSource, String contentType, String charset) {

super(

name,

contentType == null ? DEFAULT_CONTENT_TYPE : contentType,

charset == null ? "UTF-8" : charset,

DEFAULT_TRANSFER_ENCODING

);

if (partSource == null) {

throw new IllegalArgumentException("Source may not be null");

}

this.source = partSource;

}