Baidu image Batch Download tool based on C #

Using System;
Using System.Collections.Generic;
Using System.ComponentModel;
Using System.Data;
Using System.Drawing;
Using System.IO;
Using System.Linq;
Using System.Net;
Using System.Text;
Using System.Threading;
Using System.Threading.Tasks;
Using System.Windows.Forms;
Using Newtonsoft.json;
Using Newtonsoft.Json.Linq;

Namespace Picture Downloader {
Public partial class Form1:form {
private String dir;
Public Form1 () {
Control.checkforillegalcrossthreadcalls = false;//This method is not recommended, that is, do not check cross-threading operations, you should use the delegate's
InitializeComponent ();
}

private void Butselect_click (object sender, EventArgs e) {
FolderBrowserDialog dlg = new FolderBrowserDialog ();
if (dlg. ShowDialog () = = System.Windows.Forms.DialogResult.OK) {
Textdir.text = dlg. SelectedPath;

}
}
public static int pagecount = 1;
private void Showpages () {
This.textShow.AppendText ("Currently downloading section" + pagecount + "page \ n");
}
private void Butstart_click (object sender, EventArgs e) {
string key = Textkeywords.text;
if (string. IsNullOrEmpty (key)) {//detection keyword
MessageBox.Show ("Please enter keywords! ");
Return
}
if (string. IsNullOrEmpty (Textdir.text)) {//detection path
MessageBox.Show ("Please select the path!") ");
Return
}
dir = Textdir.text;
if (!dir. EndsWith ("\ \")) {
dir = dir + "\ \";
}
Thread thread = new Thread (() = {//start a new threading
Process (key);
});
Thread. Start ();//thread Start
}

private void process (string key) {
int count = (int) numericupdown.value;//requested number of pages
for (int i = 0; i < count; i++) {
PageCount = i + 1;
Showpages ();
HttpWebRequest req = (HttpWebRequest) webrequest.create ("http://image.baidu.com/search/avatarjson?tn= Resultjsonavatarnew&ie=utf-8&word= "+ uri.escapeuristring (key) +" &cg=girl&pn= "+ (i + 1) * + +" &rn= 60&itg=0&z=0&fr=&width=&height=&lm=-1&ic=0&s=0&st=-1&gsm=360600003c ");
using (HttpWebResponse res = (HttpWebResponse) req. GetResponse ()) {
if (res. StatusCode = = Httpstatuscode.ok) {
using (Stream stream = Res.) GetResponseStream ()) {
try {
Download (stream);
} catch (Exception e) {
Textshow.begininvoke (new Action () = {
Textshow.appendtext (E.message + Environment.NewLine);
}));
}
}
} else {
MessageBox.Show ("Get section" + i + "page failed! "+ Res. StatusCode);
}
}
}
}

private void Download (Stream stream) {
using (StreamReader reader = new StreamReader (stream)) {
String json = reader. ReadToEnd ();
Jobject objroot = (jobject) jsonconvert.deserializeobject (JSON);
Jarray IMGs = (jarray) objroot["IMGs"];
for (int j = 0; J < IMGs. Count; J + +) {
Jobject img = (jobject) imgs[j];
String objurl = (string) img["Objurl"];//http://hibiadu....../1.jpg
Textshow.appendtext (Objurl + Environment.NewLine);
The path to save is: DestDir;
try {
Downloadimage (Objurl);//Avoid the code in one method too complex
} catch (Exception ex) {
In the code of the child thread, manipulate the interface control to use the BeginInvoke
Textshow.begininvoke (new Action () = {
Textshow.appendtext (ex. Message + Environment.NewLine);
}));
}
}
}
}
private void Downloadimage (string objurl) {
Get the Saved path
String path = Path.Combine (dir, Path.getfilename (Objurl));
HttpWebRequest req = (HttpWebRequest) webrequest.create (Objurl);
Req. Referer = "http://image.baidu.com/";//spoof Web server This is from Baidu Pictures issued
using (HttpWebResponse res = (HttpWebResponse) req. GetResponse ()) {
if (res. StatusCode = = Httpstatuscode.ok) {
using (Stream stream = Res.) GetResponseStream ())
using (Stream filestream = new FileStream (path, FileMode.Create)) {
Stream. CopyTo (FileStream);
}
} else {
throw new Exception ("Download failed" + Res.) StatusCode);
}
}
}
}
}

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