java httpclient 图片上传_HttpClient采用multipart/form-data方式 POST调用上传图片接口

在手机客户端调用服务器端接口 把手机中的图片上传到

接口提供的服务器上。

一、客户端代码

package com.common.myTest;

import java.io.File;

import

org.apache.commons.httpclient.HttpClient;

import

org.apache.commons.httpclient.HttpStatus;

import

org.apache.commons.httpclient.methods.PostMethod;

import

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

import

org.apache.commons.httpclient.methods.multipart.MultipartRequestEntity;

import

org.apache.commons.httpclient.methods.multipart.Part;

public class Hclient {

public static void main(String args[])

{

String targetURL = null; //--

指定URL

File targetFile = null; //--

指定上传文件

targetFile = new

File("D:\\image1\\超大图片.jpg");

targetURL =

"http://localhost:8080/servlet/HServlets"; // servleturl

PostMethod filePost = new

PostMethod(targetURL);

try {

//

通过以下方法可以模拟页面参数提交

Part[] parts = { new

FilePart(targetFile.getName(), targetFile) };

filePost.setRequestEntity(new

MultipartRequestEntity(parts,

filePost.getParams()));

HttpClient client =

new HttpClient();

client.getHttpConnectionManager().getParams().setConnectionTimeout(

5000);

int status =

client.executeMethod(filePost);

if (status ==

HttpStatus.SC_OK) {

System.out.println("上传成功");

// 上传成功

} else {

System.out.println("上传失败");

// 上传失败

}

} catch (Exception ex) {

ex.printStackTrace();

} finally {

filePost.releaseConnection();

}

}

}

二、服务端代码：

package com.common.myTest;

import java.io.File;

import java.io.IOException;

import java.util.Iterator;

import java.util.List;

import javax.servlet.ServletConfig;

import javax.servlet.ServletException;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.apache.commons.fileupload.FileItem;

import

org.apache.commons.fileupload.disk.DiskFileItemFactory;

import

org.apache.commons.fileupload.servlet.ServletFileUpload;

import org.apache.commons.logging.Log;

import org.apache.commons.logging.LogFactory;

public class HServlets extends HttpServlet {

private Log log =

LogFactory.getLog(HServlets.class);

private static final long

serialVersionUID = 1L;

private String uploadPath; //

上传文件的目录

private String tempPath; //

临时文件目录

File tempPathFile;

public void init(ServletConfig config)

throws ServletException {

super.init(config);

uploadPath =

config.getServletContext().getInitParameter("imageStorePath");

tempPath =

config.getServletContext().getInitParameter("images_120");

File uploadFile = new

File(uploadPath);

if (!uploadFile.exists()) {

uploadFile.mkdirs();

}

File tempPathFile = new

File(tempPath);

if (!tempPathFile.exists())

{

tempPathFile.mkdirs();

}

}

@SuppressWarnings("unchecked")

public void doPost(HttpServletRequest

request, HttpServletResponse response)

throws

ServletException, IOException {

try {

log.info("进入上传图片的servlt");

DiskFileItemFactory

factory = new DiskFileItemFactory();

factory.setSizeThreshold(4096); //

设置缓冲区大小，这里是4kb

factory.setRepository(tempPathFile);//

设置缓冲区目录

ServletFileUpload

upload = new ServletFileUpload(factory);

upload.setSizeMax(4194304); //

设置最大文件尺寸，这里是4MB

List items =

upload.parseRequest(request);// 得到所有的文件

Iterator i =

items.iterator();

while (i.hasNext())

{

FileItem fi =

(FileItem) i.next();

String fileName =

fi.getName();

log.info("上传图片的名字："+fileName);

if (fileName !=

null) {

File fullFile = new

File(fi.getName());

File savedFile = new File(uploadPath,

fullFile.getName());

fi.write(savedFile);

}

}

log.info("上传成功!");

} catch (Exception e) {

log.info(e.getMessage());

//

可以跳转出错页面

e.printStackTrace();

}

}

}

​

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