Java后端怎么实现微信小程序校验信息

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前端只需要将图片和内容传过来即可

pom依赖

HttpClient的依赖和json转换的依赖

    com.alibaba    fastjson    1.2.54    org.apache.httpcomponents    httpclient    4.5.10

封装Vo类

用于获取到access_token后进行转换，access_token是什么就不用我多说了吧

public class AccessTokenVO {    private String access_token;    private Integer expires_in;    //记得给get set方法}

封装工具类

import com.alibaba.fastjson.JSONObject;import com.itheima.fete.pojo.AccessTokenVO;import org.apache.http.HttpEntity;import org.apache.http.client.methods.CloseableHttpResponse;import org.apache.http.client.methods.HttpGet;import org.apache.http.client.methods.HttpPost;import org.apache.http.entity.ByteArrayEntity;import org.apache.http.entity.ContentType;import org.apache.http.entity.StringEntity;import org.apache.http.impl.client.CloseableHttpClient;import org.apache.http.impl.client.HttpClients;import org.apache.http.util.EntityUtils;import org.springframework.web.multipart.MultipartFile;import java.io.*;import java.util.*;/** * @author 兮赫 */public class SenInfoCheckUtil {    /**     * 图片违规检测,对外提供,直接使用     *     * @param accessToken     * @param file     * @return     */    public static Boolean imgFilter(String accessToken, MultipartFile file) {        String contentType = file.getContentType();        return checkPic(file, accessToken, contentType);    }    /**     * 文本违规检测,对外提供,直接使用     *     * @param accessToken     * @param content     * @return     */    public static Boolean cotentFilter(String accessToken, String content) {        return checkContent(accessToken, content);    }    /**     * 校验图片是否有敏感信息     *     * @param multipartFile     * @return     */    private static Boolean checkPic(MultipartFile multipartFile, String accessToken, String contentType) {        try {            CloseableHttpClient httpclient = HttpClients.createDefault();            CloseableHttpResponse response = null;            HttpPost request = new HttpPost("https://api.weixin.qq.com/wxa/img_sec_check?access_token=" + accessToken);            request.addHeader("Content-Type", "application/octet-stream");            InputStream inputStream = multipartFile.getInputStream();            byte[] byt = new byte[inputStream.available()];            inputStream.read(byt);            request.setEntity(new ByteArrayEntity(byt, ContentType.create(contentType)));            response = httpclient.execute(request);            HttpEntity httpEntity = response.getEntity();            String result = EntityUtils.toString(httpEntity, "UTF-8");// 转成string            JSONObject jso = JSONObject.parseObject(result);            return getResult(jso);        } catch (Exception e) {            e.printStackTrace();            return true;        }    }    /**     * 校验内容是否有敏感信息     * @param accessToken     * @param content     * @return     */    private static Boolean checkContent(String accessToken, String content) {        try {            CloseableHttpClient httpclient = HttpClients.createDefault();            CloseableHttpResponse response = null;            HttpPost request = new HttpPost("https://api.weixin.qq.com/wxa/msg_sec_check?access_token=" + accessToken);            request.addHeader("Content-Type", "application/json");            Map map = new HashMap<>();            map.put("content", content);            String body = JSONObject.toJSONString(map);            request.setEntity(new StringEntity(body, ContentType.create("text/json", "UTF-8")));            response = httpclient.execute(request);            HttpEntity httpEntity = response.getEntity();            String result = EntityUtils.toString(httpEntity, "UTF-8");// 转成string            JSONObject jso = JSONObject.parseObject(result);            return getResult(jso);        } catch (Exception e) {            e.printStackTrace();            return true;        }    }    /**     * 返回状态信息,可以修改为自己的逻辑     * @param jso     * @return     */    private static Boolean getResult(JSONObject jso) {        Object errcode = jso.get("errcode");        int errCode = (int) errcode;        if (errCode == 0) {            return true;        } else if (errCode == 87014) {            return false;        } else {            return false;        }    }    /**     * 获取小程序的 access_token     * @return     */    public static String getAccessToken() {        AccessTokenVO accessTokenVO = null;        try {            CloseableHttpClient httpclient = HttpClients.createDefault();            CloseableHttpResponse response = null;            //改成自己的appid和secret            HttpGet request = new HttpGet("https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=wxbh0594d32gf315&secret=c9864f6e8aafg8313b6d5d608bd6a6b");            request.addHeader("Content-Type", "application/json");            response = httpclient.execute(request);            HttpEntity httpEntity = response.getEntity();            String result = EntityUtils.toString(httpEntity, "UTF-8");// 转成string            accessTokenVO = JSONObject.parseObject(result, AccessTokenVO.class);            //返回token            return accessTokenVO.getAccess_token();        } catch (IOException e) {            e.printStackTrace();        }        return null;    }}

编写Controller层

import com.itheima.fete.utils.SenInfoCheckUtil;import org.springframework.web.bind.annotation.*;import org.springframework.web.multipart.MultipartFile;import java.io.IOException;/** * @author 兮赫 * 校验内容是否敏感 */@RestController@RequestMapping("/check")public class CheckController {    /**     * 校验内容     * @param content     * @return     * @throws IOException     */    @GetMapping("/content/{content}")    public Boolean checkContent(@PathVariable String content) {        String accessToken = SenInfoCheckUtil.getAccessToken();        return SenInfoCheckUtil.cotentFilter(accessToken, content);    }    /**     * 校验图片     * @param multipartFile     * @return     */    @PostMapping("/image")    public Boolean checkImage(@RequestPart(value = "file") MultipartFile multipartFile){        String accessToken = SenInfoCheckUtil.getAccessToken();        return SenInfoCheckUtil.imgFilter(accessToken, multipartFile);    }}

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