微信开发之使用java获取签名signature

微信开发之使用java获取签名signature

一、前言

微信接口调用验证最终需要用到的三个参数noncestr、timestamp、signature：

接下来将会给出获取这三个参数的详细代码

本文的环境eclipse + maven

本文使用到的技术HttpClient、json字符串转map、sha1加密

二、需要用到的jar包

maven依赖的包有：

1、HttpClient包依赖

org.apache.httpcomponents

httpcore&ILhGdMeclt;/artifactId>

4.4.3

org.apache.httpcomponents

httpclient

4.5.1

2、json转map相关包依赖

net.sf.json-lib

json-lib

2.4

jdk15

xom

xom

1.2.5

三、运行结果

四、详细代码

package com.luo.util;

import java.io.IOException;

import java.io.UnsupportedEncodingException;

import java.security.MessageDigest;

import java.security.NoSuchAlgorithmException;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.Iterator;

import java.util.List;

import java.util.Map;

import java.util.Set;

import java.util.UUID;

import net.sf.json.JSONObject;

import org.apache.http.HttpEntity;

import org.apache.http.HttpResponse;

import org.apache.http.NameValuePair;

import org.apache.http.ParseException;

import org.apache.http.client.ClientProtocolException;

import org.apache.http.client.entity.UrlEncodedFormEntity;

import org.apache.http.client.methods.HttpGet;

import org.apache.http.client.methods.HttpPost;

import org.apache.http.client.methods.HttpUriRequhttp://est;

import org.apache.http.impl.client.DefaultHttpClient;

import org.apache.http.message.BasicNameValuePair;

import org.apache.http.protocol.HTTP;

import org.apache.http.util.EntityUtils;

public class HttpXmlClient {

public static String post(String url, Map params) {

DefaultHttpClient httpclient = new DefaultHttpClient();

String body = null;

HttpPost post = postForm(url, params);

body = invoke(httpclient, post);

httpclient.getConnectionManager().shutdown();

return body;

}

public static String get(String url) {

DefaultHttpClient httpclient = new DefaultHttpClient();

String body = null;

HttpGet get = new HttpGet(url);

body = invoke(httpclient, get);

httpclient.getConnectionManager().shutdown();

return body;

}

private static String invoke(DefaultHttpClient httpclient,

HttpUriRequest httpost) {

HttpResponse response = sendRequest(httpclient, httpost);

String body = paseResponse(response);

return body;

}

private static String paseResponse(HttpResponse response) {

HttpEntity entity = response.getEntity();

String charset = EntityUtils.getContentCharSet(entity);

String body = null;

try {

body = EntityUtils.toString(entity);

} catch (ParseException e) {

e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

}

return body;

}

private static HttpResponse sendRequest(DefaultHttpClient httpclient,

HttpUriRILhGdMecequest httpost) {

HttpResponse response = null;

try {

response = httpclient.execute(httpost);

} catch (ClientProtocolException e) {

e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

}

return response;

}

private static HttpPost postForm(String url, Map params) {

HttpPost httpost = new HttpPost(url);

List nvps = new ArrayList();

Set keySet = params.keySet();

for (String key : keySet) {

nvps.add(new BasicNameValuePair(key, params.get(key)));

}

try {

httpost.setEntity(new UrlEncodedFormEntity(nvps, HTTP.UTF_8));

} catch (UnsupportedEncodingException e) {

e.printStackTrace();

}

return httpost;

}

public static void main(String[] args) {

//获取access_token

Map params = new HashMap();

params.put("corpid","wx5f24fa0db1819ea2");

params.put("corpsecret","uQtWzF0bQtl2KRHX0amekjpq8L0aO96LSpSNfctOBLRbuYPO4DUBhMn0_v2jHS-9");

String xml = HttpXmlClient.post("https://qyapi.weixin.qq.com/cgi-bin/gettoken",params);

JSONObject jsonMap = JSONObject.fromObject(xml);

Map map = new HashMap();

Iterator it = jsonMap.keys();

while(it.hasNext()) {

String key = (String) it.next();

String u = jsonMap.get(key).toString();

map.put(key, u);

}

String access_token = map.get("access_token");

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

//获取ticket

params.put("access_token",access_token);

xml = HttpXmlClient.post("https://qyapi.weixin.qq.com/cgi-bin/get_jsapi_ticket",params);

jsonMap = JSONObject.fromObject(xml);

map = new HashMap();

it = jsonMap.keys();

while(it.hasNext()) {

String key = (String) it.next();

String u = jsonMap.get(key).toString();

map.put(key, u);

}

String jsapi_ticket = map.get("ticket");

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

//获取签名signature

String noncestr = UUID.randomUUID().toString();

String timestamp = Long.toString(System.currentTimeMillis() / 1000);

String url="http://mp.weixin.qq.com";

String str = "jsapi_ticket=" + jsapi_ticket +

"&noncestr=" + noncestr +

"&timestamp=" + timestamp +

"&url=" + url;

//sha1加密

String signature = SHA1(str);

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

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

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

//最终获得调用微信js接口验证需要的三个参数noncestr、timestamp、signature

}

/**

* @author：罗国辉

* @date： 2015年12月17日 上午9:24:43

* @description： SHA、SHA1加密

* @parameter： str：待加密字符串

* @return： 加密串

**/

public static String SHA1(String str) {

try {

MessageDigest digest = java.security.MessageDigest

.getInstance("SHA-1"); //如果是SHA加密只需要将"SHA-1"改成"SHA"即可

digest.update(str.getBytes());

byte messageDigest[] = digest.digest();

// Create Hex String

StringBuffer hexStr = new StringBuffer();

// 字节数组转换为 十六进制 数

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

String shaHex = Integer.toHexString(messageDigest[i] & 0xFF);

if (shaHex.length() < 2) {

hexStr.append(0);

}

hexStr.append(shaHex);

}

return hexStr.toString();

} catch (NoSuchAlgorithmException e) {

e.printStackTrace();

}

return null;

}

}

五、工程下载

微信获取签名工程

更多精彩内容请点击《android微信开发教程汇总》，《java微信开发教程汇总》欢迎大家学习阅读。

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