微信开发之使用java获取签名signature（贴源码，附工程）

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：

二、需要用到的jar包

maven依赖的包有：

1、HttpClient包依赖

<dependency>   <groupId>org.apache.httpcomponents</groupId>   <artifactId>httpcore</artifactId>   <version>4.4.3</version> </dependency> <dependency>   <groupId>org.apache.httpcomponents</groupId>   <artifactId>httpclient</artifactId>   <version>4.5.1</version> </dependency>

2、json转map相关包依赖

<dependency>         <groupId>net.sf.json-lib</groupId>        <artifactId>json-lib</artifactId>         <version>2.4</version>       <classifier>jdk15</classifier>   </dependency> <dependency>     <groupId>xom</groupId>     <artifactId>xom</artifactId>     <version>1.2.5</version> </dependency>

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.HttpUriRequest; 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<String, String> 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,             HttpUriRequest 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<String, String> params) {          HttpPost httpost = new HttpPost(url);         List<NameValuePair> nvps = new ArrayList<NameValuePair>();          Set<String> 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<String, String> params = new HashMap<String, String>();         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<String, String> map = new HashMap<String, String>();         Iterator<String> 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<String, String>();         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

http://download.csdn.net/detail/u013142781/9382839