<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.3.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.majker</groupId>
    <artifactId>wxPayDemo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>wxPayDemo</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
        <commons-lang3.version>3.5</commons-lang3.version>
        <!-- tools version setting -->
        <commons-io.version>2.4</commons-io.version>
        <!-- lombok插件 -->
        <lombok.version>1.16.18</lombok.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-redis</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.apache.httpcomponents/httpclient -->
        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpclient</artifactId>
            <version>4.5.3</version>
        </dependency>

        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>1.7.21</version>
        </dependency>

        <dependency>
            <groupId>io.swagger</groupId>
            <artifactId>swagger-annotations</artifactId>
            <version>1.5.9</version>
            <scope>compile</scope>
        </dependency>

        <!-- fastjson json-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.1.40</version>
        </dependency>
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-lang3</artifactId>
            <version>${commons-lang3.version}</version>
        </dependency>

        <!--log-->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>${lombok.version}</version>
            <optional>true</optional>
        </dependency>

        <!-- GENERAL UTILS begin -->
        <dependency>
            <groupId>commons-io</groupId>
            <artifactId>commons-io</artifactId>
            <version>${commons-io.version}</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

package com.majker.common.util;

import com.alibaba.fastjson.JSON;
import com.fasterxml.jackson.annotation.JsonIgnore;
import java.io.Serializable;
import java.lang.reflect.Field;
import java.util.*;

/****************************************************
 *
 *  响应结果
 *
 * @author majker
 * @date: 2018/2/10
 * @version 1.0
 **************************************************/
public class Render<T> implements Serializable {

    private String msg;

    private T data;

    private int code;

    private Boolean error;

    private Long timestamp;

    private static Map map;


    public String getMsg() {
        return msg;
    }

    public int getCode() {
        return code;
    }

    public T getData() {
        return data;
    }

    public Boolean getError() {
        return error;
    }

    public Long getTimestamp() {
        return timestamp;
    }

    public static <T> Render<T> fail(String message) {
        Render<T> msg = new Render<>();
        msg.msg = message;
        msg.code(ResultCode.EXCEPTION.val());
        msg.error(true);
        return msg.putTimeStamp();
    }

    public static <T> Render<T> fail(ResultCode resultCode) {
        Render<T> msg = new Render<>();
        msg.msg = resultCode.msg();
        msg.code(resultCode.val());
        msg.error(true);
        return msg.putTimeStamp();
    }

    public static <T> Render<T> ok() {
        return ok(null);
    }

    private Render<T> putTimeStamp() {
        this.timestamp = System.currentTimeMillis();
        return this;
    }

    public static <T> Render<T> ok(T data) {
        return new Render<T>()
                .data(data)
                .putTimeStamp()
                .error(false)
                .msg(ResultCode.SUCCESS.msg())
                .code(ResultCode.SUCCESS.val());
    }

    public static <T> Render<T> ok(T data, String msg) {
        return new Render<T>()
                .data(data)
                .putTimeStamp()
                .error(false)
                .msg(msg)
                .code(ResultCode.SUCCESS.val());
    }

    public static Map okMap(Object data) {
        map = new HashMap();
        map.put("data", data);
        map.put("error", false);
        map.put("code", ResultCode.SUCCESS.val());
        map.put("msg", ResultCode.SUCCESS.msg());
        map.put("timestamp", System.currentTimeMillis());
        return map;
    }

    public static Map failMap(String msg) {
        map = new HashMap();
        map.put("data", null);
        map.put("error", true);
        map.put("code", ResultCode.EXCEPTION.val());
        map.put("msg", msg);
        map.put("timestamp", System.currentTimeMillis());
        return map;
    }


    public static Map failMap(ResultCode resultCode) {
        map = new HashMap();
        map.put("data", null);
        map.put("error", true);
        map.put("code", resultCode.val());
        map.put("msg", resultCode.msg());
        map.put("timestamp", System.currentTimeMillis());
        return map;
    }

    public Render<T> data(T data) {
        this.data = data;
        return this;
    }

    public Render<T> code(int code) {
        this.code = code;
        return this;
    }

    public Render<T> error(Boolean error) {
        this.error = error;
        return this;
    }

    public Render<T> msg(String msg) {
        this.msg = msg;
        return this;
    }

    /**
     * 过滤字段：指定需要序列化的字段
     */
    @JsonIgnore
    private transient Map<Class<?>, Set<String>> includes;

    /**
     * 过滤字段：指定不需要序列化的字段
     */
    @JsonIgnore
    private transient Map<Class<?>, Set<String>> excludes;

    public Render() {

    }

    public Render<T> include(Class<?> type, String... fields) {
        return include(type, Arrays.asList(fields));
    }

    public Render<T> include(Class<?> type, Collection<String> fields) {
        if (includes == null)
            includes = new HashMap<>();
        if (fields == null || fields.isEmpty()) return this;
        fields.forEach(field -> {
            if (field.contains(".")) {
                String tmp[] = field.split("[.]", 2);
                try {
                    Field field1 = type.getDeclaredField(tmp[0]);
                    if (field1 != null) {
                        include(field1.getType(), tmp[1]);
                    }
                } catch (Throwable e) {
                }
            } else {
                getStringListFromMap(includes, type).add(field);
            }
        });
        return this;
    }

    public Render<T> exclude(Class type, Collection<String> fields) {
        if (excludes == null)
            excludes = new HashMap<>();
        if (fields == null || fields.isEmpty()) return this;
        fields.forEach(field -> {
            if (field.contains(".")) {
                String tmp[] = field.split("[.]", 2);
                try {
                    Field field1 = type.getDeclaredField(tmp[0]);
                    if (field1 != null) {
                        exclude(field1.getType(), tmp[1]);
                    }
                } catch (Throwable e) {
                }
            } else {
                getStringListFromMap(excludes, type).add(field);
            }
        });
        return this;
    }

    public Render<T> exclude(Collection<String> fields) {
        if (excludes == null)
            excludes = new HashMap<>();
        if (fields == null || fields.isEmpty()) return this;
        Class type;
        if (getData() != null) type = getData().getClass();
        else return this;
        exclude(type, fields);
        return this;
    }

    public Render<T> include(Collection<String> fields) {
        if (includes == null)
            includes = new HashMap<>();
        if (fields == null || fields.isEmpty()) return this;
        Class type;
        if (getData() != null) type = getData().getClass();
        else return this;
        include(type, fields);
        return this;
    }

    public Render<T> exclude(Class type, String... fields) {
        return exclude(type, Arrays.asList(fields));
    }

    public Render<T> exclude(String... fields) {
        return exclude(Arrays.asList(fields));
    }

    public Render<T> include(String... fields) {
        return include(Arrays.asList(fields));
    }

    protected Set<String> getStringListFromMap(Map<Class<?>, Set<String>> map, Class type) {
        return map.computeIfAbsent(type, k -> new HashSet<>());
    }

    @Override
    public String toString() {
        return JSON.toJSONStringWithDateFormat(this, "yyyy-MM-dd HH:mm:ss");
    }

    public Map<Class<?>, Set<String>> getExcludes() {
        return excludes;
    }

    public Map<Class<?>, Set<String>> getIncludes() {
        return includes;
    }

}

package com.majker.common.sdk;


import javax.net.ssl.*;
import javax.servlet.http.HttpServletRequest;
import java.io.*;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import java.security.*;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.util.Iterator;
import java.util.Map;

public class HttpKit {
    private static final String GET = "GET";
    private static final String POST = "POST";
    private static String CHARSET = "UTF-8";
    private static final SSLSocketFactory sslSocketFactory = initSSLSocketFactory();
    private static final TrustAnyHostnameVerifier trustAnyHostnameVerifier = new HttpKit().new TrustAnyHostnameVerifier();

//    public static final OkHttp3Delegate delegate = new OkHttp3Delegate();

    private HttpKit() {
    }

    private static SSLSocketFactory initSSLSocketFactory() {
        try {
            TrustManager[] e = new TrustManager[]{new HttpKit().new TrustAnyTrustManager()};
            SSLContext sslContext = SSLContext.getInstance("TLS");
            sslContext.init((KeyManager[])null, e, new SecureRandom());
            return sslContext.getSocketFactory();
        } catch (Exception var2) {
            throw new RuntimeException(var2);
        }
    }

    public static void setCharSet(String charSet) {
        if(charSet!=null && !charSet.equals("")) {
            throw new IllegalArgumentException("charSet can not be blank.");
        } else {
            CHARSET = charSet;
        }
    }

    private static HttpURLConnection getHttpConnection(String url, String method, Map<String, String> headers) throws IOException, NoSuchAlgorithmException, NoSuchProviderException, KeyManagementException {
        URL _url = new URL(url);
        HttpURLConnection conn = (HttpURLConnection)_url.openConnection();
        if(conn instanceof HttpsURLConnection) {
            ((HttpsURLConnection)conn).setSSLSocketFactory(sslSocketFactory);
            ((HttpsURLConnection)conn).setHostnameVerifier(trustAnyHostnameVerifier);
        }

        conn.setRequestMethod(method);
        conn.setDoOutput(true);
        conn.setDoInput(true);
        conn.setConnectTimeout(19000);
        conn.setReadTimeout(19000);
        conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
        conn.setRequestProperty("AuthUser-Agent", "Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/33.0.1750.146 Safari/537.36");
        if(headers != null && !headers.isEmpty()) {
            Iterator i$ = headers.entrySet().iterator();

            while(i$.hasNext()) {
                Map.Entry entry = (Map.Entry)i$.next();
                conn.setRequestProperty((String)entry.getKey(), (String)entry.getValue());
            }
        }

        return conn;
    }

    public static String get(String url, Map<String, String> queryParas, Map<String, String> headers) {
        HttpURLConnection conn = null;
        String e;
        try {
            conn = getHttpConnection(buildUrlWithQueryString(url, queryParas), "GET", headers);
            conn.connect();
            e = readResponseString(conn);
        } catch (Exception var8) {
            throw new RuntimeException(var8);
        } finally {
            if(conn != null) {
                conn.disconnect();
            }
        }
        return e;
    }

    public static String get(String url, Map<String, String> queryParas) {
        return get(url, queryParas, (Map)null);
    }

    public static String get(String url) {
        return get(url, (Map)null, (Map)null);
    }

    public static String post(String url, Map<String, String> queryParas, String data, Map<String, String> headers) {
        HttpURLConnection conn = null;

        String var6;
        try {
            conn = getHttpConnection(buildUrlWithQueryString(url, queryParas), "POST", headers);
            conn.connect();
            OutputStream e = conn.getOutputStream();
            e.write(data.getBytes(CHARSET));
            e.flush();
            e.close();
            var6 = readResponseString(conn);
        } catch (Exception var10) {
            throw new RuntimeException(var10);
        } finally {
            if(conn != null) {
                conn.disconnect();
            }
        }
        return var6;
    }

    public static String post(String url, Map<String, String> queryParas, String data) {
        return post(url, queryParas, data, (Map)null);
    }

    public static String post(String url, String data, Map<String, String> headers) {
        return post(url, (Map)null, data, headers);
    }

    public static String post(String url, String data) {
        return post(url, (Map)null, data, (Map)null);
    }

    private static String readResponseString(HttpURLConnection conn) {
        StringBuilder sb = new StringBuilder();
        InputStream inputStream = null;

        try {
            inputStream = conn.getInputStream();
            BufferedReader e = new BufferedReader(new InputStreamReader(inputStream, CHARSET));
            String line = null;

            while((line = e.readLine()) != null) {
                sb.append(line).append("\n");
            }

            String var5 = sb.toString();
            return var5;
        } catch (Exception var14) {
            throw new RuntimeException(var14);
        } finally {
            if(inputStream != null) {
                try {
                    inputStream.close();
                } catch (IOException var13) {
                }
            }

        }
    }

    private static String buildUrlWithQueryString(String url, Map<String, String> queryParas) {
        if(queryParas != null && !queryParas.isEmpty()) {
            StringBuilder sb = new StringBuilder(url);
            boolean isFirst;
            if(url.indexOf("?") == -1) {
                isFirst = true;
                sb.append("?");
            } else {
                isFirst = false;
            }

            String key;
            String value;
            for(Iterator i$ = queryParas.entrySet().iterator(); i$.hasNext(); sb.append(key).append("=").append(value)) {
                Map.Entry entry = (Map.Entry)i$.next();
                if(isFirst) {
                    isFirst = false;
                } else {
                    sb.append("&");
                }

                key = (String)entry.getKey();
                value = (String)entry.getValue();
                if(value!=null && !value.equals("")) {
                    try {
                        value = URLEncoder.encode(value, CHARSET);
                    } catch (UnsupportedEncodingException var9) {
                        throw new RuntimeException(var9);
                    }
                }
            }

            return sb.toString();
        } else {
            return url;
        }
    }

    public static String readData(HttpServletRequest request) {
        BufferedReader br = null;

        try {
            StringBuilder e = new StringBuilder();
            br = request.getReader();
            String line = null;

            while((line = br.readLine()) != null) {
                e.append(line).append("\n");
            }

            line = e.toString();
            return line;
        } catch (IOException var12) {
            throw new RuntimeException(var12);
        } finally {
            if(br != null) {
                try {
                    br.close();
                } catch (IOException var11) {
                }
            }

        }
    }

    /** @deprecated */
    @Deprecated
    public static String readIncommingRequestData(HttpServletRequest request) {
        return readData(request);
    }


    private class TrustAnyTrustManager implements X509TrustManager {
        private TrustAnyTrustManager() {
        }

        public X509Certificate[] getAcceptedIssuers() {
            return null;
        }

        public void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException {
        }

        public void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException {
        }
    }

    private class TrustAnyHostnameVerifier implements HostnameVerifier {
        private TrustAnyHostnameVerifier() {
        }

        public boolean verify(String hostname, SSLSession session) {
            return true;
        }
    }


}

package com.majker.common.sdk;

import org.apache.commons.io.Charsets;

import java.io.*;
import java.nio.charset.Charset;

/**
 * IOUtils
 * @author majker
 */
public abstract class IOUtils {
    private static final int DEFAULT_BUFFER_SIZE = 1024 * 4;

    /**
     * closeQuietly
     * @param closeable 自动关闭
     */
    public static void closeQuietly(Closeable closeable) {
        try {
            if (closeable != null) {
                closeable.close();
            }
        } catch (IOException ioe) {
            // ignore
        }
    }

    /**
     * InputStream to String utf-8
     *
     * @param input  the <code>InputStream</code> to read from
     * @return the requested String
     * @throws NullPointerException if the input is null
     * @throws IOException if an I/O error occurs
     */
    public static String toString(InputStream input) throws IOException {
        return toString(input, Charsets.UTF_8);
    }

    /**
     * InputStream to String
     *
     * @param input  the <code>InputStream</code> to read from
     * @param charset  the <code>Charset</code>
     * @return the requested String
     * @throws NullPointerException if the input is null
     * @throws IOException if an I/O error occurs
     */
    public static String toString(InputStream input, Charset charset) throws IOException {
        InputStreamReader in = new InputStreamReader(input, charset);
        StringBuffer out = new StringBuffer();
        char[] c = new char[DEFAULT_BUFFER_SIZE];
        for (int n; (n = in.read(c)) != -1;) {
            out.append(new String(c, 0, n));
        }
        IOUtils.closeQuietly(in);
        IOUtils.closeQuietly(input);
        return out.toString();
    }

    /**
     * InputStream to File
     * @param input  the <code>InputStream</code> to read from
     * @param file the File to write
     * @throws IOException id异常
     */
    public static void toFile(InputStream input, File file) throws IOException {
        OutputStream os = new FileOutputStream(file);
        int bytesRead = 0;
        byte[] buffer = new byte[DEFAULT_BUFFER_SIZE];
        while ((bytesRead = input.read(buffer, 0, DEFAULT_BUFFER_SIZE)) != -1) {
            os.write(buffer, 0, bytesRead);
        }
        IOUtils.closeQuietly(os);
        IOUtils.closeQuietly(input);
    }
}

package com.majker.common.sdk;
import java.io.UnsupportedEncodingException;
import java.util.HashMap;
import java.util.Map;

 /****************************************************
  *
  * 微信支付api
  *
  * @author majker
  * @version 1.0
  **************************************************/
public class PaymentApi {

    private PaymentApi() {}

    // 文档地址：https://pay.weixin.qq.com/wiki/doc/api/jsapi.php?chapter=9_1
    private static String unifiedOrderUrl = "https://api.mch.weixin.qq.com/pay/unifiedorder";

    /**
     * 交易类型枚举
     * WAP的文档：https://pay.weixin.qq.com/wiki/doc/api/wap.php?chapter=15_1
     * @author L.cm
     * <pre>
     * email: 596392912@qq.com
     * site: http://www.dreamlu.net
     * date: 2015年10月27日 下午9:46:27
     * </pre>
     */
    public enum TradeType {
        JSAPI, NATIVE, APP, WAP, MWEB
    }

    /**
     * 统一下单
     * @param params 参数map
     * @return String
     */
    public static String pushOrder(Map<String, String> params) {
        return HttpKit.post(unifiedOrderUrl, PaymentKit.toXml(params));
    }

    private static Map<String, String> request(String url, Map<String, String> params, String paternerKey) {
        params.put("nonce_str", System.currentTimeMillis() + "");
        String sign = PaymentKit.createSign(params, paternerKey);
        params.put("sign", sign);
        String xmlStr = HttpKit.post(url, PaymentKit.toXml(params));
        return PaymentKit.xmlToMap(xmlStr);
    }

    /**
     * 文档说明：https://pay.weixin.qq.com/wiki/doc/api/wap.php?chapter=15_4
     * <pre>
     * @param appId 公众账号ID         是    String(32)    wx8888888888888888    微信分配的公众账号ID
     * 随机字符串         noncestr    是    String(32)    5K8264ILTKCH16CQ2502SI8ZNMTM67VS    随机字符串，不长于32位。推荐随机数生成算法
     * 订单详情扩展字符串    package        是    String(32)    WAP    扩展字段，固定填写WAP
     * @param prepayId 预支付交易会话标识    是    String(64)    wx201410272009395522657a690389285100    微信统一下单接口返回的预支付回话标识，用于后续接口调用中使用，该值有效期为2小时
     * 签名                 sign        是    String(32)    C380BEC2BFD727A4B6845133519F3AD6    签名，详见签名生成算法
     * 时间戳            timestamp    是    String(32)    1414561699    当前的时间，其他详见时间戳规则
     * @param paternerKey 签名密匙
     * </pre>
     * @return {String}
     */
    public static String getDeepLink(String appId, String prepayId, String paternerKey) {
        Map<String, String> params = new HashMap<String, String>();
        params.put("appid", appId);
        params.put("noncestr", System.currentTimeMillis() + "");
        params.put("package", "WAP");
        params.put("prepayid", prepayId);
        params.put("timestamp", System.currentTimeMillis() / 1000 + "");
        String sign = PaymentKit.createSign(params, paternerKey);
        params.put("sign", sign);

        String string1 = PaymentKit.packageSign(params, true);

        String string2 = "";
        try { string2 = PaymentKit.urlEncode(string1); } catch (UnsupportedEncodingException e) {}

        return "weixin://wap/pay?" + string2;
    }

    // 文档地址：https://pay.weixin.qq.com/wiki/doc/api/jsapi.php?chapter=9_2
    private static String orderQueryUrl = "https://api.mch.weixin.qq.com/pay/orderquery";

    /**
     * 根据商户订单号查询信息
     * @param appid 公众账号ID
     * @param mch_id 商户号
     * @param paternerKey 商户密钥
     * @param transaction_id 微信订单号
     * @return 回调信息
     */
    public static Map<String, String> queryByTransactionId(String appid, String mch_id, String paternerKey, String transaction_id) {
        Map<String, String> params = new HashMap<String, String>();
        params.put("appid", appid);
        params.put("mch_id", mch_id);
        params.put("transaction_id", transaction_id);
        return request(orderQueryUrl, params, paternerKey);
    }

    /**
     * 根据商户订单号查询信息
     * @param appid 公众账号ID
     * @param mch_id 商户号
     * @param paternerKey 商户密钥
     * @param out_trade_no 商户订单号
     * @return 回调信息
     */
    public static Map<String, String> queryByOutTradeNo(String appid, String mch_id, String paternerKey, String out_trade_no) {
        Map<String, String> params = new HashMap<String, String>();
        params.put("appid", appid);
        params.put("mch_id", mch_id);
        params.put("out_trade_no", out_trade_no);
        return request(orderQueryUrl, params, paternerKey);
    }

    // 文档地址：https://pay.weixin.qq.com/wiki/doc/api/jsapi.php?chapter=9_3
    private static String closeOrderUrl = "https://api.mch.weixin.qq.com/pay/closeorder";

    /**
     * 关闭订单
     * @param appid 公众账号ID
     * @param mch_id 商户号
     * @param paternerKey 商户密钥
     * @param out_trade_no 商户订单号
     * @return 回调信息
     */
    public static Map<String, String> closeOrder(String appid, String mch_id, String paternerKey, String out_trade_no) {
        Map<String, String> params = new HashMap<String, String>();
        params.put("appid", appid);
        params.put("mch_id", mch_id);
        params.put("out_trade_no", out_trade_no);
        return request(closeOrderUrl, params, paternerKey);
    }

    // 申请退款文档地址：https://pay.weixin.qq.com/wiki/doc/api/jsapi.php?chapter=9_4
    public static String refundUrl = "https://api.mch.weixin.qq.com/secapi/pay/refund";


    // 查询退款文档地址：https://pay.weixin.qq.com/wiki/doc/api/jsapi.php?chapter=9_5
    private static String refundQueryUrl = "https://api.mch.weixin.qq.com/pay/refundquery";

    private static Map<String, String> baseRefundQuery(Map<String, String> params, String appid, String mch_id, String paternerKey) {
        params.put("appid", appid);
        params.put("mch_id", mch_id);
        return request(refundQueryUrl, params, paternerKey);
    }

    /**
     * 根据微信订单号查询退款
     * @param appid 公众账号ID
     * @param mch_id 商户号
     * @param paternerKey 商户密钥
     * @param transaction_id 微信订单号
     * @return map
     */
    public static Map<String, String> refundQueryByTransactionId(String appid, String mch_id, String paternerKey, String transaction_id) {
        Map<String, String> params = new HashMap<String, String>();
        params.put("transaction_id", transaction_id);
        return baseRefundQuery(params, appid, mch_id, paternerKey);
    }

    /**
     * 根据微信订单号查询退款
     * @param appid 公众账号ID
     * @param mch_id 商户号
     * @param paternerKey 商户密钥
     * @param out_trade_no 商户订单号
     * @return map
     */
    public static Map<String, String> refundQueryByOutTradeNo(String appid, String mch_id, String paternerKey, String out_trade_no) {
        Map<String, String> params = new HashMap<String, String>();
        params.put("out_trade_no", out_trade_no);
        return baseRefundQuery(params, appid, mch_id, paternerKey);
    }

    /**
     * 根据微信订单号查询退款
     * @param appid 公众账号ID
     * @param mch_id 商户号
     * @param paternerKey 商户密钥
     * @param out_refund_no 商户退款单号
     * @return map
     */
    public static Map<String, String> refundQueryByOutRefundNo(String appid, String mch_id, String paternerKey, String out_refund_no) {
        Map<String, String> params = new HashMap<String, String>();
        params.put("out_refund_no", out_refund_no);
        return baseRefundQuery(params, appid, mch_id, paternerKey);
    }

    /**
     * 根据微信订单号查询退款
     * @param appid 公众账号ID
     * @param mch_id 商户号
     * @param paternerKey 商户密钥
     * @param refund_id 微信退款单号
     * @return map
     */
    public static Map<String, String> refundQueryByRefundId(String appid, String mch_id, String paternerKey, String refund_id) {
        Map<String, String> params = new HashMap<String, String>();
        params.put("refund_id", refund_id);
        return baseRefundQuery(params, appid, mch_id, paternerKey);
    }

    private static String downloadBillUrl = "https://api.mch.weixin.qq.com/pay/downloadbill";

    /**
     * <pre>
     * ALL，返回当日所有订单信息，默认值
     * SUCCESS，返回当日成功支付的订单
     * REFUND，返回当日退款订单
     * REVOKED，已撤销的订单
     * </pre>
     */
    public static enum BillType {
        ALL, SUCCESS, REFUND, REVOKED
    }

    /**
     * 下载对账单
     * <pre>
     * 公众账号ID    appid        是    String(32)    wx8888888888888888    微信分配的公众账号ID（企业号corpid即为此appId）
     * 商户号        mch_id        是    String(32)    1900000109    微信支付分配的商户号
     * 设备号        device_info    否    String(32)    013467007045764    微信支付分配的终端设备号
     * 随机字符串    nonce_str    是    String(32)    5K8264ILTKCH16CQ2502SI8ZNMTM67VS    随机字符串，不长于32位。推荐随机数生成算法
     * 签名        sign        是    String(32)    C380BEC2BFD727A4B6845133519F3AD6    签名，详见签名生成算法
     * 对账单日期    bill_date    是    String(8)    20140603    下载对账单的日期，格式：20140603
     * 账单类型        bill_type    否    String(8)
     * </pre>
     * @param appid 公众账号ID
     * @param mch_id 商户号
     * @param paternerKey 签名密匙
     * @param billDate 对账单日期
     * @return String
     */
    public static String downloadBill(String appid, String mch_id, String paternerKey, String billDate) {
        return downloadBill(appid, mch_id, paternerKey, billDate, null);
    }

    /**
     * 下载对账单
     * <pre>
     * 公众账号ID    appid        是    String(32)    wx8888888888888888    微信分配的公众账号ID（企业号corpid即为此appId）
     * 商户号        mch_id        是    String(32)    1900000109    微信支付分配的商户号
     * 设备号        device_info    否    String(32)    013467007045764    微信支付分配的终端设备号
     * 随机字符串    nonce_str    是    String(32)    5K8264ILTKCH16CQ2502SI8ZNMTM67VS    随机字符串，不长于32位。推荐随机数生成算法
     * 签名        sign        是    String(32)    C380BEC2BFD727A4B6845133519F3AD6    签名，详见签名生成算法
     * 对账单日期    bill_date    是    String(8)    20140603    下载对账单的日期，格式：20140603
     * 账单类型        bill_type    否    String(8)
     * </pre>
     * @param appid 公众账号ID
     * @param mch_id 商户号
     * @param paternerKey 签名密匙
     * @param billDate 对账单日期
     * @param billType 账单类型
     * @return String
     */
    public static String downloadBill(String appid, String mch_id, String paternerKey, String billDate, BillType billType) {
        Map<String, String> params = new HashMap<String, String>();
        params.put("appid", appid);
        params.put("mch_id", mch_id);
        params.put("nonce_str", System.currentTimeMillis() + "");
        params.put("bill_date", billDate);
        if (null != billType) {
            params.put("bill_type", billType.name());
        } else {
            params.put("bill_type", BillType.ALL.name());
        }
        String sign = PaymentKit.createSign(params, paternerKey);
        params.put("sign", sign);
        return HttpKit.post(downloadBillUrl, PaymentKit.toXml(params));
    }

}