阿里通用OCR文字識(shí)別/圖像識(shí)別/圖片識(shí)別對(duì)接代碼示例(Java篇)
更新時(shí)間：2024年12月24日 10:02:31 作者：Bug制造者——
這篇文章主要介紹了阿里通用OCR文字識(shí)別/圖像識(shí)別/圖片識(shí)別對(duì)接(Java篇)的相關(guān)資料,文中詳細(xì)介紹了包括開(kāi)通服務(wù)、測(cè)試圖片、編寫(xiě)識(shí)別代碼、處理識(shí)別結(jié)果等步驟,需要的朋友可以參考下
1：進(jìn)入阿里云開(kāi)通文字識(shí)別
現(xiàn)在1分錢(qián)可以購(gòu)買(mǎi)500次識(shí)別
2：這里可以測(cè)試 放入自己的圖片URL即可
3：進(jìn)入 云市場(chǎng)-已購(gòu)買(mǎi)的服務(wù) 找到剛才自己買(mǎi)的OCR 復(fù)制appcode
4：編寫(xiě)識(shí)別代碼 img我這里是傳入的URL鏈接
/**
* OCR文字識(shí)別
* @param img 圖片地址
*/
public static String aliyunAnalysisPic(String img){
String host = "https://tysbgpu.market.alicloudapi.com";
String path = "/api/predict/ocr_general";
String method = "POST";
//自己的appCode
String appcode = "自己上面復(fù)制的appcode";
Map<String, String> headers = new HashMap<String, String>();
//最后在header中的格式(中間是英文空格)為Authorization:APPCODE ****************
headers.put("Authorization", "APPCODE " + appcode);
//根據(jù)API的要求，定義相對(duì)應(yīng)的Content-Type
headers.put("Content-Type", "application/json; charset=UTF-8");
Map<String, String> querys = new HashMap<String, String>();
// String bodys = "{\"img\":\"\",\"url\":\""+img+"\",\"prob\":false,\"charInfo\":false,\"rotate\":false,\"table\":false}";
String bodys = "{\"image\":\""+img+"\",\"configure\":{\"output_prob\":true,\"output_keypoints\":false,\"skip_detection\":false,\"without_predicting_direction\":false,\"dir_assure\":false}}";
try {
HttpResponse response = HttpUtils.doPost(host, path, method, headers, querys, bodys);
System.out.println(response.toString());
//獲取response的body
String entity = EntityUtils.toString(response.getEntity());
JSONObject jsonObject = new JSONObject(entity);
String word = extractMaxProbWord(jsonObject);
// String content = jsonObject.get("word").toString();
System.out.println(word);
return word;
} catch (Exception e) {
e.printStackTrace();
return "";
}
}這個(gè)是識(shí)別是會(huì)返回多個(gè)結(jié)果 判斷prob精度值最大的結(jié)果 返回
public static String extractMaxProbWord(JSONObject jsonResponse) throws Exception {
// JSONObject jsonObject = new JSONObject(jsonResponse);
JSONArray retArray = jsonResponse.getJSONArray("ret");
double maxProb = -1;
String maxProbWord = "";
for (int i = 0; i < retArray.length(); i++) {
JSONObject obj = retArray.getJSONObject(i);
double prob = obj.getDouble("prob");
String word = obj.getString("word");
if (prob > maxProb) {
maxProb = prob;
maxProbWord = word;
}
}
return maxProbWord;
}5：HttpUtils 工具類(lèi)
package edu.controllereTest.teacherTest;
import org.apache.commons.lang3.StringUtils;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpDelete;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.methods.HttpPut;
import org.apache.http.conn.ClientConnectionManager;
import org.apache.http.conn.scheme.Scheme;
import org.apache.http.conn.scheme.SchemeRegistry;
import org.apache.http.conn.ssl.SSLSocketFactory;
import org.apache.http.entity.ByteArrayEntity;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.security.KeyManagementException;
import java.security.NoSuchAlgorithmException;
import java.security.cert.X509Certificate;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
public class HttpUtils {
/**
* get
*
* @param host
* @param path
* @param method
* @param headers
* @param querys
* @return
* @throws Exception
*/
public static HttpResponse doGet(String host, String path, String method,
Map<String, String> headers,
Map<String, String> querys)
throws Exception {
HttpClient httpClient = wrapClient(host);
HttpGet request = new HttpGet(buildUrl(host, path, querys));
for (Map.Entry<String, String> e : headers.entrySet()) {
request.addHeader(e.getKey(), e.getValue());
}
return httpClient.execute(request);
}
/**
* post form
*
* @param host
* @param path
* @param method
* @param headers
* @param querys
* @param bodys
* @return
* @throws Exception
*/
public static HttpResponse doPost(String host, String path, String method,
Map<String, String> headers,
Map<String, String> querys,
Map<String, String> bodys)
throws Exception {
HttpClient httpClient = wrapClient(host);
HttpPost request = new HttpPost(buildUrl(host, path, querys));
for (Map.Entry<String, String> e : headers.entrySet()) {
request.addHeader(e.getKey(), e.getValue());
}
if (bodys != null) {
List<NameValuePair> nameValuePairList = new ArrayList<NameValuePair>();
for (String key : bodys.keySet()) {
nameValuePairList.add(new BasicNameValuePair(key, bodys.get(key)));
}
UrlEncodedFormEntity formEntity = new UrlEncodedFormEntity(nameValuePairList, "utf-8");
formEntity.setContentType("application/x-www-form-urlencoded; charset=UTF-8");
request.setEntity(formEntity);
}
return httpClient.execute(request);
}
/**
* Post String
*
* @param host
* @param path
* @param method
* @param headers
* @param querys
* @param body
* @return
* @throws Exception
*/
public static HttpResponse doPost(String host, String path, String method,
Map<String, String> headers,
Map<String, String> querys,
String body)
throws Exception {
HttpClient httpClient = wrapClient(host);
HttpPost request = new HttpPost(buildUrl(host, path, querys));
for (Map.Entry<String, String> e : headers.entrySet()) {
request.addHeader(e.getKey(), e.getValue());
}
if (StringUtils.isNotBlank(body)) {
request.setEntity(new StringEntity(body, "utf-8"));
}
return httpClient.execute(request);
}
/**
* Post stream
*
* @param host
* @param path
* @param method
* @param headers
* @param querys
* @param body
* @return
* @throws Exception
*/
public static HttpResponse doPost(String host, String path, String method,
Map<String, String> headers,
Map<String, String> querys,
byte[] body)
throws Exception {
HttpClient httpClient = wrapClient(host);
HttpPost request = new HttpPost(buildUrl(host, path, querys));
for (Map.Entry<String, String> e : headers.entrySet()) {
request.addHeader(e.getKey(), e.getValue());
}
if (body != null) {
request.setEntity(new ByteArrayEntity(body));
}
return httpClient.execute(request);
}
/**
* Put String
* @param host
* @param path
* @param method
* @param headers
* @param querys
* @param body
* @return
* @throws Exception
*/
public static HttpResponse doPut(String host, String path, String method,
Map<String, String> headers,
Map<String, String> querys,
String body)
throws Exception {
HttpClient httpClient = wrapClient(host);
HttpPut request = new HttpPut(buildUrl(host, path, querys));
for (Map.Entry<String, String> e : headers.entrySet()) {
request.addHeader(e.getKey(), e.getValue());
}
if (StringUtils.isNotBlank(body)) {
request.setEntity(new StringEntity(body, "utf-8"));
}
return httpClient.execute(request);
}
/**
* Put stream
* @param host
* @param path
* @param method
* @param headers
* @param querys
* @param body
* @return
* @throws Exception
*/
public static HttpResponse doPut(String host, String path, String method,
Map<String, String> headers,
Map<String, String> querys,
byte[] body)
throws Exception {
HttpClient httpClient = wrapClient(host);
HttpPut request = new HttpPut(buildUrl(host, path, querys));
for (Map.Entry<String, String> e : headers.entrySet()) {
request.addHeader(e.getKey(), e.getValue());
}
if (body != null) {
request.setEntity(new ByteArrayEntity(body));
}
return httpClient.execute(request);
}
/**
* Delete
*
* @param host
* @param path
* @param method
* @param headers
* @param querys
* @return
* @throws Exception
*/
public static HttpResponse doDelete(String host, String path, String method,
Map<String, String> headers,
Map<String, String> querys)
throws Exception {
HttpClient httpClient = wrapClient(host);
HttpDelete request = new HttpDelete(buildUrl(host, path, querys));
for (Map.Entry<String, String> e : headers.entrySet()) {
request.addHeader(e.getKey(), e.getValue());
}
return httpClient.execute(request);
}
private static String buildUrl(String host, String path, Map<String, String> querys) throws UnsupportedEncodingException {
StringBuilder sbUrl = new StringBuilder();
sbUrl.append(host);
if (!StringUtils.isBlank(path)) {
sbUrl.append(path);
}
if (null != querys) {
StringBuilder sbQuery = new StringBuilder();
for (Map.Entry<String, String> query : querys.entrySet()) {
if (0 < sbQuery.length()) {
sbQuery.append("&");
}
if (StringUtils.isBlank(query.getKey()) && !StringUtils.isBlank(query.getValue())) {
sbQuery.append(query.getValue());
}
if (!StringUtils.isBlank(query.getKey())) {
sbQuery.append(query.getKey());
if (!StringUtils.isBlank(query.getValue())) {
sbQuery.append("=");
sbQuery.append(URLEncoder.encode(query.getValue(), "utf-8"));
}
}
}
if (0 < sbQuery.length()) {
sbUrl.append("?").append(sbQuery);
}
}
return sbUrl.toString();
}
private static HttpClient wrapClient(String host) {
HttpClient httpClient = new DefaultHttpClient();
if (host.startsWith("https://")) {
sslClient(httpClient);
}
return httpClient;
}
private static void sslClient(HttpClient httpClient) {
try {
SSLContext ctx = SSLContext.getInstance("TLS");
X509TrustManager tm = new X509TrustManager() {
public X509Certificate[] getAcceptedIssuers() {
return null;
}
public void checkClientTrusted(X509Certificate[] xcs, String str) {
}
public void checkServerTrusted(X509Certificate[] xcs, String str) {
}
};
ctx.init(null, new TrustManager[] { tm }, null);
SSLSocketFactory ssf = new SSLSocketFactory(ctx);
ssf.setHostnameVerifier(SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER);
ClientConnectionManager ccm = httpClient.getConnectionManager();
SchemeRegistry registry = ccm.getSchemeRegistry();
registry.register(new Scheme("https", 443, ssf));
} catch (KeyManagementException ex) {
throw new RuntimeException(ex);
} catch (NoSuchAlgorithmException ex) {
throw new RuntimeException(ex);
}
}
}
6：測(cè)試圖片
7：識(shí)別結(jié)果
當(dāng)然 你們可以 吧ret返回集合中的 結(jié)果全部拼接起來(lái)
總結(jié)
到此這篇關(guān)于阿里通用OCR文字識(shí)別/圖像識(shí)別/圖片識(shí)別對(duì)接的文章就介紹到這了,更多相關(guān)Java版阿里通用OCR識(shí)別內(nèi)容請(qǐng)搜索腳本之家以前的文章或繼續(xù)瀏覽下面的相關(guān)文章希望大家以后多多支持腳本之家！
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