java通过http协议上传图片给php文件,对安卓上传图片给php接口的理解
java文件:
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
public class HttpUpload {
public static final String API="http://localhost/test.php";
public static void main(String[] args) throws Exception {
String imgUrl="E:\\11.png";
String result=uploadImg(imgUrl);
System.out.println(result);
}
private static String uploadImg(String imgUrl) throws Exception {
File imgFile=new File(imgUrl);
URL url=new URL(API);
HttpURLConnection conn=(HttpURLConnection) url.openConnection();
conn.setConnectTimeout(10000);
conn.setRequestMethod("POST");
conn.setRequestProperty("Content-Type", "multipart/form-data; boundary=----123456789");
conn.setDoInput(true);
conn.setDoOutput(true);
OutputStream os=new DataOutputStream(conn.getOutputStream());
StringBuilder body=new StringBuilder();
body.append("------123456789\r\n");
body.append("Content-Disposition: form-data; name='img'; filename='"+imgFile.getName()+"'\r\n");
body.append("Content-Type: image/jpeg\r\n\r\n");
os.write(body.toString().getBytes());
InputStream is=new FileInputStream(imgFile);
byte[] b=new byte[1024];
int len=0;
while((len=is.read(b))!=-1){
os.write(b,0,len);
}
String end="\r\n------123456789--";
os.write(end.getBytes());
//输出返回结果
InputStream input=conn.getInputStream();
byte[] res=new byte[1024];
int resLen=input.read(res);
return new String(res,0,resLen);
}
}
PHP文件
<?php
class Test{
public static function main(){
header("content-type:text/html;charset=utf-8");
if(!empty($_FILES)){
$test=new Test();
$test->uploadImg();
exit;
}
}
/**
* 上传图片
*/
public function uploadImg(){
$res=move_uploaded_file($_FILES['img']['tmp_name'], './'.$_FILES['img']['name']);
if($res){
echo "upload success";
}else{
echo "upload error";
}
}
}
Test::main();
?>
<form enctype="multipart/form-data" action="test.php" method="post">
<input type="file" name="img" />
<input type="submit" value="上传" />
</form>