http協議下載文件的第一種方式
package Practice;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;
//利用http協議下的
public class Test01 {
public static void main(String[] args) {
//找到一個要下載的網址
String url="http://photocdn.sohu.com/20150610/mp18368185_1433925691994_2.jpg";
//此處需要自己手動到jar包 創建工具對象
OkHttpClient client=new OkHttpClient();
//創建請求方式 內部類對象
Request.Builder builder=new Request.Builder();
builder.url(url);
Request request=builder.build();
//另一種創建內部類對象的方式
//Request request2=new Request.Builder().url(url).build(); 不設置請求方式的時候默認爲get
FileOutputStream fos=null;
try {
Response response=client.newCall(request).execute();
if(response.isSuccessful()){
fos=new FileOutputStream(new File("hhh.jpg"));
byte[] b=new byte[1024];
fos.write(b);
fos.flush();
}
System.out.println("文件下載完畢");
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally{
if(fos!=null){
try {
fos.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
}