package openresty;

import java.io.IOException;

import java.security.GeneralSecurityException;

import java.security.MessageDigest;

import java.util.Date;

import java.util.HashMap;

import java.util.Map;

import java.util.Map.Entry;

import java.util.Set;

import java.util.TreeMap;

import org.springframework.boot.SpringApplication;

import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication

public class OpenrestySign {

    public static void main(String[] args) throws IOException {

        OpenrestySign.run(OpenrestySign.class, args);

        HashMap<String,String> params = new HashMap<String,String>();

        params.put("key", "1");

        params.put("a", "1");

        params.put("c", "w");

        params.put("b", "2");

        long time = new Date().getTime();

        params.put("time", "" + time);

        System.out.println(time);

        String sign = getSignature(params,"123456");

        System.out.println(sign);

        params.put("sign", sign);

        String resp = HttpsUtil.doGet("http://10.11.0.215/sign",params);

        System.out.println(resp);

    }

    /**

     * 签名生成算法

     * @param HashMap<String,String> params 请求参数集，所有参数必须已转换为字符串类型

     * @param String secret 签名密钥

     * @return 签名

     * @throws IOException

     */

    public static String getSignature(HashMap<String,String> params, String secret) throws IOException

    {

        // 先将参数以其参数名的字典序升序进行排序

        Map<String, String> sortedParams = new TreeMap<String, String>(params);

        Set<Entry<String, String>> entrys = sortedParams.entrySet();

        // 遍历排序后的字典，将所有参数按"key=value"格式拼接在一起

        StringBuilder basestring = new StringBuilder();

        for (Entry<String, String> param : entrys) {

            if(basestring.length() != 0){

                basestring.append("&");

            }

            basestring.append(param.getKey()).append("=").append(param.getValue());

        }

        basestring.append("&");

        basestring.append(secret);

        System.out.println("basestring="+basestring);

        // 使用MD5对待签名串求签

        byte[] bytes = null;

        try {

            MessageDigest md5 = MessageDigest.getInstance("MD5");

            bytes = md5.digest(basestring.toString().getBytes("UTF-8"));

        } catch (GeneralSecurityException ex) {

            throw new IOException(ex);

        }

        String strSign = new String(bytes);

        System.out.println("strSign="+strSign);

        // 将MD5输出的二进制结果转换为小写的十六进制

        StringBuilder sign = new StringBuilder();

        for (int i = 0; i < bytes.length; i++) {

            String hex = Integer.toHexString(bytes[i] & 0xFF);

            if (hex.length() == 1) {

                sign.append("0");

            }

            sign.append(hex);

        }

        return sign.toString();

    }

}

<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>

  <groupId>openresty</groupId>

  <artifactId>openresty</artifactId>

  <version>0.0.1-SNAPSHOT</version>

  <packaging>jar</packaging>

  <name>openresty</name>

  <url>http://maven.apache.org</url>

  <properties>

    <java.version>1.8</java.version>

    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

  </properties>

  <parent>

    <groupId>org.springframework.boot</groupId>

    <artifactId>spring-boot-starter-parent</artifactId>

    <version>2.0.0.RELEASE</version>

</parent>

  <dependencies>

    <dependency>

        <groupId>org.springframework.boot</groupId>

        <artifactId>spring-boot-starter-web</artifactId>

    </dependency>

</dependencies>

<build>

    <plugins>

        <plugin>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-maven-plugin</artifactId>

        </plugin>

    </plugins>

</build>

<repositories>

    <repository>

        <id>repository.spring.release</id>

        <name>Spring GA Repository</name>

        <url>http://repo.spring.io/release</url>

    </repository>

</repositories>

</project>