四、使用HttpClient上传测试文件服务器
直接上代码吧！
package cn.java.basic.upload;import java.io.File;import java.io.IOException;import java.io.InputStream;import org.apache.http.HttpEntity;import org.apache.http.HttpResponse;import org.apache.http.client.ClientProtocolException;import org.apache.http.client.HttpClient;import org.apache.http.client.methods.HttpPost;import org.apache.http.entity.mime.MultipartEntity;import org.apache.http.entity.mime.content.FileBody;import org.apache.http.entity.mime.content.StringBody;import org.apache.http.impl.client.DefaultHttpClient;public class HttpUpload {private static final String UPLOADURL = "http://192.168.0.181:8099/upload";private static final String KEY_USERNAME = "username";private static final String KEY_MD5ORSHA1 = "md5orsha1";private static final String KEY_FILE = "myfile";private String username;private String md5orsha1;private String filePath;public String getUsername() {return username;}public void setUsername(String username) {this.username = username;}public String getMd5orsha1() {return md5orsha1;}public void setMd5orsha1(String md5orsha1) {this.md5orsha1 = md5orsha1;}public String getFilePath() {return filePath;}public void setFilePath(String filePath) {this.filePath = filePath;}public HttpUpload(String username, String md5orsha1, String filePath) {super();this.username = username;this.md5orsha1 = md5orsha1;this.filePath = filePath;}public String postFile() throws ClientProtocolException, IOException {FileBody fileBody = null;HttpClient httpclient = new DefaultHttpClient();HttpPost httppost = new HttpPost(UPLOADURL);File file = new File(filePath);if (file != null) {fileBody = new FileBody(file);}StringBody usernameStringBody = new StringBody(username);StringBody md5orsha1StringBody = new StringBody(md5orsha1);MultipartEntity reqEntity = new MultipartEntity();reqEntity.addPart(KEY_USERNAME, usernameStringBody);reqEntity.addPart(KEY_MD5ORSHA1, md5orsha1StringBody);reqEntity.addPart(KEY_FILE, fileBody);httppost.setEntity(reqEntity);System.out.println("执行: " + httppost.getRequestLine());HttpResponse response = httpclient.execute(httppost);System.out.println("statusCode is "+ response.getStatusLine().getStatusCode());HttpEntity resEntity = response.getEntity();System.out.println("----------------------------------------");System.out.println(response.getStatusLine());if (resEntity != null) {System.out.println("返回长度: " + resEntity.getContentLength());System.out.println("返回类型: " + resEntity.getContentType());InputStream in = resEntity.getContent();String returnValue = inputStream2String(in);System.out.println("returnValue:" + returnValue);return returnValue;}if (resEntity != null) {resEntity.consumeContent();}return null;}public static String inputStream2String(InputStream in) throws IOException {StringBuffer out = new StringBuffer();byte[] b = new byte[4096];for (int n; (n = in.read(b)) != -1;) {out.append(new String(b, 0, n));}return out.toString();}public static void main(String[] args) throws ClientProtocolException,IOException {String username = "10000";String md5orsha1 = "11111111111111111111111111111112";String filePath = "e:\\b.jpg";HttpUpload hu = new HttpUpload(username, md5orsha1, filePath);System.out.println(hu.postFile());}}?
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输出结果：
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使用返回的地址去访问图片
工程需要如下包：
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附上jar包吧！