百度通用OCR文字识别 Http方式请求
1：获取token
private void getToken() {
// 官网获取的 API Key 更新为你注册的
String clientId ="你的ak";
// 官网获取的 Secret Key 更新为你注册的
String clientSecret ="你的sk";
String authHost ="https://aip.baidubce.com/oauth/2.0/token?";
String getAccessTokenUrl = authHost
// 1. grant_type为固定参数
+"grant_type=client_credentials"
// 2. 官网获取的API Key
+"&client_id=" + clientId
// 3. 官网获取的Secret Key
+"&client_secret=" + clientSecret;
OkGo.get(getAccessTokenUrl)
.execute(new StringCallback() {
@Override
public void onSuccess(Response response) {
JSONObject jsonObject =null;
try {
jsonObject =new JSONObject(response.body());
String access_token = jsonObject.getString("access_token");
Message message=Message.obtain();
message.what=0;
message.obj=access_token;
mHandler.sendMessage(message);
}catch (JSONException e) {
e.printStackTrace();
}
}
});
}
// handler
private String token;
@SuppressLint("HandlerLeak")
private HandlermHandler=new Handler() {
@Override
public void handleMessage(Message msg) {
super.handleMessage(msg);
switch (msg.what){
case 0:
token= (String) msg.obj;
scanImg();
break;
}
}
};
//注意token过期然后重新获取 这里是测试代码 没有搞这一步(大概就是把token保存下来 请求识别的接口时判断token的状态 过期了就重新获取token)
2：识别
private String url="https://aip.baidubce.com/rest/2.0/ocr/v1/general_basic";
private Bitmap bitmap;
private void scanImg() {
bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.test);// 自己找张图片放进去
String bitmapToBase64 =bitmapToBase64(bitmap);
OkGo.post(url+"?access_token="+token)
.tag(this)
.headers("Content-Type","application/x-www-form-urlencoded")
.params("image",bitmapToBase64)
.params("language_type","CHN_ENG")
.params("detect_direction",false)
.params("detect_language",false)
.params("probability",false)
.execute(new StringCallback() {
@Override
public void onSuccess(Response response) {
Log.d("wangwu","onSuccess: "+response.body().toString());
}
});
}
/*
* bitmap转base64
* */
private static String bitmapToBase64(Bitmap bitmap) {
String result =null;
ByteArrayOutputStream baos =null;
try {
if (bitmap !=null) {
baos =new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.JPEG,100, baos);
baos.flush();
baos.close();
byte[] bitmapBytes = baos.toByteArray();
result = Base64.encodeToString(bitmapBytes, Base64.DEFAULT);
}
}catch (IOException e) {
e.printStackTrace();
}finally {
try {
if (baos !=null) {
baos.flush();
baos.close();
}
}catch (IOException e) {
e.printStackTrace();
}
}
return result;
}
注意：
"error_code": 216101
请求接口的时候用post不要用get！
// 百度文字识别错误码连接：
