Java

如果使用maven，可以加入如下依赖:

    <dependency>
    <groupId>cn.hutool</groupId>
    <artifactId>hutool-all</artifactId>
    <version>5.7.22</version>
</dependency>
<dependency>
    <groupId>org.bouncycastle</groupId>
    <artifactId>bcprov-jdk15to18</artifactId>
    <version>1.71</version>
</dependency>

示例程序

java:

import cn.hutool.core.io.IoUtil;
import cn.hutool.core.util.IdUtil;
import cn.hutool.crypto.asymmetric.SM2;
import cn.hutool.http.HttpRequest;
import cn.hutool.http.HttpResponse;
import cn.hutool.http.HttpUtil;
import cn.hutool.json.JSON;
import cn.hutool.json.JSONUtil;
import org.junit.Test;

import java.io.*;
import java.nio.charset.StandardCharsets;
import java.util.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class ApiRequestTest {

    static class EvidenceHashParam {
        private String fileLabel;
        private List<HashInfo> list;
        static class HashInfo {
            private String filename;
            private String fileHash;

            public String getFilename() {
                return filename;
            }

            public void setFilename(String filename) {
                this.filename = filename;
            }

            public String getFileHash() {
                return fileHash;
            }

            public void setFileHash(String fileHash) {
                this.fileHash = fileHash;
            }
        }

        public String getFileLabel() {
            return fileLabel;
        }

        public void setFileLabel(String fileLabel) {
            this.fileLabel = fileLabel;
        }

        public List<HashInfo> getList() {
            return list;
        }

        public void setList(List<HashInfo> list) {
            this.list = list;
        }
    }

    static class EvidenceFileParam {
        private String fileLabel;
        private List<Long> files;

        public String getFileLabel() {
            return fileLabel;
        }

        public void setFileLabel(String fileLabel) {
            this.fileLabel = fileLabel;
        }

        public List<Long> getFiles() {
            return files;
        }

        public void setFiles(List<Long> files) {
            this.files = files;
        }
    }

    private String uri = "http://127.0.0.1:18848/api";

    /**
     *
     * @throws Exception
     */
    @Test
    public void detail() throws Exception {
        String apiName = "/evidence/detail";
        HttpRequest httpRequest = createRequestPost(apiName);
        // 构建请求参数
        Map<String ,Object> body = new HashMap<>();
        body.put("attestationId","did:bid:efaE9e45apUbuA87y7Y6zjMTaGfHt7WX");
        httpRequest.body(JSONUtil.toJsonStr(body));
        HttpResponse httpResponse = httpRequest.execute();
        String result = httpResponse.body();
        JSON json = JSONUtil.parse(result);
        System.out.println(json.toString());
    }

    @Test
    public void list() throws Exception {
        // API path
        String apiName = "/evidence/list";
        HttpRequest httpRequest = createRequestPost(apiName);
        // 构建请求参数
        Map<String ,Object> body = new HashMap<>();
//        body.put("attestationId","");
        httpRequest.body(JSONUtil.toJsonStr(body));
        HttpResponse httpResponse = httpRequest.execute();
        String result = httpResponse.body();
        JSON json = JSONUtil.parse(result);
        System.out.println(json.toString());
    }

    @Test
    public void hash() throws Exception {
        // API path
        String apiName = "/evidence/hash";
        HttpRequest httpRequest = createRequestPost(apiName);
        // 构建请求参数
        List<EvidenceHashParam.HashInfo> list = new ArrayList<>();
        EvidenceHashParam.HashInfo hashInfo1 = new EvidenceHashParam.HashInfo();
        hashInfo1.setFilename("test1");
        hashInfo1.setFileHash("98df1f1dfb3b1a123c1517912dc70447aa61c6be532ac99de973abb6219e1653");
        list.add(hashInfo1);
        EvidenceHashParam evidenceHashParam = new EvidenceHashParam();
        evidenceHashParam.setFileLabel("标签");
        evidenceHashParam.setList(list);
        httpRequest.body(JSONUtil.toJsonStr(evidenceHashParam));
        HttpResponse httpResponse = httpRequest.execute();
        String result = httpResponse.body();
        JSON json = JSONUtil.parse(result);
        System.out.println(json.toString());
    }

    @Test
    public void file() throws Exception {
        // API path
        String apiName = "/evidence/file";
        HttpRequest httpRequest = createRequestPost(apiName);
        // 构建请求参数
        List<Long> list = new ArrayList<>();
        list.add(1544567382363930624L);
        EvidenceFileParam evidenceFileParam = new EvidenceFileParam();
        evidenceFileParam.setFileLabel("标签");
        evidenceFileParam.setFiles(list);
        httpRequest.body(JSONUtil.toJsonStr(evidenceFileParam));
        HttpResponse httpResponse = httpRequest.execute();
        String result = httpResponse.body();
        JSON json = JSONUtil.parse(result);
        System.out.println(json.toString());
    }
    @Test
    public void uploadFile() throws Exception {
        // API path
        String apiName = "/file/upload";
        HttpRequest httpRequest = createRequestPost(apiName);
        httpRequest.form("file",new File("/tmp/背景图.png"));
        httpRequest.form("type","video");

        HttpResponse httpResponse = httpRequest.execute();
        String result = httpResponse.body();
        JSON json = JSONUtil.parse(result);
        System.out.println(json.toString());
    }
    @Test
    public void download() throws Exception {
        // API path
        String apiName = "/file/download/1529707935276466176";
        HttpRequest httpRequest = createRequestGet(apiName);

        HttpResponse httpResponse = httpRequest.execute();
        String header = httpResponse.header("Content-Disposition");
        Pattern pattern = Pattern.compile(".*filename=\"(.*)\".*");
        Matcher matcher = pattern.matcher(header);
        String fileName = "";
        if (matcher.matches()) {
            fileName = matcher.group(1);
        }
        byte[] bytes = httpResponse.bodyBytes();
        IoUtil.write(new FileOutputStream("/tmp/" + fileName),true,bytes);
    }

    private HttpRequest createRequestPost(String apiName) throws Exception {
        // 构建请求
        HttpRequest httpRequest = HttpUtil.createPost(uri + apiName);
        setHttpRequestHeaders(httpRequest);
        return httpRequest;
    }
    private HttpRequest createRequestGet(String apiName) throws Exception {
        // 构建请求
        HttpRequest httpRequest = HttpUtil.createGet(uri + apiName);
        setHttpRequestHeaders(httpRequest);
        return httpRequest;
    }

    private HttpRequest setHttpRequestHeaders(HttpRequest httpRequest) throws Exception {
        // RSA私钥文件路径
        String privateKey = "308193020100301306072a8648ce3d020106082a811ccf5501822d047930770201010420ab398da2bb9268c226f4c5908e94841ca6d254a90cf6e66ad848c8e01ee86d33a00a06082a811ccf5501822da144034200049ab45581431741df119e74c8699fd2cb70caeda3c6f05383dd8b4294f3ff5f3c2d7959877584ec884b75a09af99aa69d69c17f6e3018283d0452cbd0debd5262";
        // 请求头
        String requestId = IdUtil.simpleUUID();
        String accessKey = "9d82aeae8c9b4c479715fc2923619472";
        String nonce = String.valueOf(System.currentTimeMillis() / 1000);

        //待签名数据 = requestId+accessKey+nonce
        String data = requestId + accessKey + nonce;
        // 开始签名
        SM2 sm2 = new SM2(privateKey,null);
        sm2.setMode(SM2Engine.Mode.C1C2C3);
        sm2.usePlainEncoding();
        // 签名使用Base64编码后得到的值即为请求头中signature字段的值
        String signatureData = Base64.getEncoder().encodeToString(sm2.sign(data.getBytes(StandardCharsets.UTF_8)));
        // 构建请求头
        Map<String ,String> headers = new HashMap<>();
        headers.put("request_id", requestId);
        headers.put("access_key", accessKey);
        headers.put("nonce",nonce);
        headers.put("signature",signatureData);
        httpRequest.addHeaders(headers);
        return httpRequest;
    }


}