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微信公众开放平台开发02-微信公众平台PHP接口和java接口对比

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Jun 13, 2016 am 11:57 AM

finalgtltstring

微信公众开放平台开发02---微信公众平台PHP接口和java接口对比

微信公众开放平台开发02---微信公众平台PHP接口和java接口对比
技术qq交流群：JavaDream：251572072
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这一节中的代码收集于网友的制作
-------------------------------------------
a.java-jsp版
b.PHP的接口代码:
/**
? * wechat php test
? */

//define your token
define("TOKEN", "weixin");
$wechatObj = new wechatCallbackapiTest();
$wechatObj->valid();

class wechatCallbackapiTest
{
?public function valid()
??? {
??????? $echoStr = $_GET["echostr"];

??????? //valid signature , option
??????? if($this->checkSignature()){
??????? ?echo $echoStr;
??????? ?exit;
??????? }
??? }

??? public function responseMsg()
??? {
??//get post data, May be due to the different environments
??$postStr = $GLOBALS["HTTP_RAW_POST_DATA"];

????? ?//extract post data
??if (!empty($postStr)){
???????????????
????????????? ?$postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);
??????????????? $fromUsername = $postObj->FromUserName;
??????????????? $toUsername = $postObj->ToUserName;
??????????????? $keyword = trim($postObj->Content);
??????????????? $time = time();
??????????????? $textTpl = "
???????
???????
???????%s
???????
???????
???????0
???????";????????????
????if(!empty( $keyword ))
??????????????? {
????????????? ??$msgType = "text";
??????????????? ?$contentStr = "Welcome to wechat world!";
??????????????? ?$resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
??????????????? ?echo $resultStr;
??????????????? }else{
??????????????? ?echo "Input something...";
??????????????? }

??????? }else {
??????? ?echo "";
??????? ?exit;
??????? }
??? }
??
?private function checkSignature()
?{
??????? $signature = $_GET["signature"];
??????? $timestamp = $_GET["timestamp"];
??????? $nonce = $_GET["nonce"];?
??????? ??
??$token = TOKEN;
??$tmpArr = array($token, $timestamp, $nonce);
??sort($tmpArr);
??$tmpStr = implode( $tmpArr );
??$tmpStr = sha1( $tmpStr );
??
??if( $tmpStr == $signature ){
???return true;
??}else{
???return false;
??}
?}
}

?>
--------------------------------------------------
c.java版接口

?//WeiXinHandler为内部类不能使用非final类型的对象
?final String TOKEN="weixin";
?final HttpServletRequest final_request=request;
?final HttpServletResponse final_response=response;
%>
class WeiXinHandler{
?public void valid(){
??String echostr=final_request.getParameter("echostr");
??if(null==echostr||echostr.isEmpty()){
???responseMsg();
??}else{
???if(this.checkSignature()){
????this.print(echostr);
???}else{
????this.print("error");????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????
???}
??}
?}
?//自动回复内容
?public void responseMsg(){
??String postStr=null;
??try{
???postStr=this.readStreamParameter(final_request.getInputStream());
??}catch(Exception e){
???e.printStackTrace();
??}
??//System.out.println(postStr);
??if (null!=postStr&&!postStr.isEmpty()){
???Document document=null;
???try{
????document = DocumentHelper.parseText(postStr);
???}catch(Exception e){
????e.printStackTrace();
???}
???if(null==document){
????this.print("");
????return;
???}
???Element root=document.getRootElement();
??????????? String fromUsername = root.elementText("FromUserName");
??????????? String toUsername = root.elementText("ToUserName");
??????????? String keyword = root.elementTextTrim("Content");
??????????? String time = new Date().getTime()+"";
??????????? String textTpl = ""+
??????""+
??????""+
??????"%3$s"+
??????""+
??????""+
??????"0"+
??????"";????????????
???
???if(null!=keyword&&!keyword.equals(""))
??????????? {
????????? ??String msgType = "text";
??????????? ?String contentStr = "Welcome to wechat world!";
??????????? ?String resultStr = textTpl.format(textTpl, fromUsername, toUsername, time, msgType, contentStr);
??????????? ?this.print(resultStr);
??????????? }else{
??????????? ?this.print("Input something...");
??????????? }

???? }else {
???? ?this.print("");
???? }
?}
?//微信接口验证
?public boolean checkSignature(){
??String signature = final_request.getParameter("signature");
??????? String timestamp = final_request.getParameter("timestamp");
??????? String nonce = final_request.getParameter("nonce");
??????? String token=TOKEN;
??????? String[] tmpArr={token,timestamp,nonce};
??????? Arrays.sort(tmpArr);
??????? String tmpStr=this.ArrayToString(tmpArr);
??????? tmpStr=this.SHA1Encode(tmpStr);
??????? if(tmpStr.equalsIgnoreCase(signature)){
???return true;
??}else{
???return false;
??}
?}
?//向请求端发送返回数据
?public void print(String content){
??try{
???final_response.getWriter().print(content);
???final_response.getWriter().flush();
???final_response.getWriter().close();
??}catch(Exception e){
???
??}
?}
?//数组转字符串
?public String ArrayToString(String [] arr){
??StringBuffer bf = new StringBuffer();
??for(int i = 0; i ?? bf.append(arr[i]);
??}
??return bf.toString();
?}
?//sha1加密
?public String SHA1Encode(String sourceString) {
??String resultString = null;
??try {
???? resultString = new String(sourceString);
???? MessageDigest md = MessageDigest.getInstance("SHA-1");
???? resultString = byte2hexString(md.digest(resultString.getBytes()));
??} catch (Exception ex) {
??}
??return resultString;
?}
?public final String byte2hexString(byte[] bytes) {
??StringBuffer buf = new StringBuffer(bytes.length * 2);
??for (int i = 0; i ???if (((int) bytes[i] & 0xff) ????? ?buf.append("0");
???? ?}
???buf.append(Long.toString((int) bytes[i] & 0xff, 16));
??}
??return buf.toString().toUpperCase();
?}
?//从输入流读取post参数
?public String readStreamParameter(ServletInputStream in){
??StringBuilder buffer = new StringBuilder();
??BufferedReader reader=null;
??try{
???reader = new BufferedReader(new InputStreamReader(in));
???String line=null;
???while((line = reader.readLine())!=null){
????buffer.append(line);
???????? }
??}catch(Exception e){
???e.printStackTrace();
??}finally{
???if(null!=reader){
????try {
?????reader.close();
????} catch (IOException e) {
?????e.printStackTrace();
????}
???}
??}
??return buffer.toString();
?}
}
%>
?WeiXinHandler handler=new WeiXinHandler();
?handler.valid();
%>
-----------------------------------------
d.以上就是PHP接口和JSP接口的所有代码，
? 现在我们来对一些需要注意的地方做下分析：
? 首先的从总体看的话，jsp要比PHP繁琐一些，因为很多函数需要自己写，
? 像sha1加密，解析xml字符串等都需要自己找第三方的库。
? 第一点，我们要获取微信公众平台给jsp发送的post或get参数，正常情况下都是用request.getParameter就可以获取到，
? 但是在写的过程中发现PHP是这样获取
? $postStr = $GLOBALS["HTTP_RAW_POST_DATA"];
? 这时通过查询一些资料知道这样获取的是无法通过$_GET或$_POST函数得到的”未识别 MIME 类型的数据“，原始的 POST 数据
? 所以这里使用获取原始数据流的方式来解析post的xml数据
? String postStr=null;
??try{
???postStr=this.readStreamParameter(final_request.getInputStream());
??}catch(Exception e){
???e.printStackTrace();
??}
-----------------------------------------------------
//从输入流读取post参数
?public String readStreamParameter(ServletInputStream in){
??StringBuilder buffer = new StringBuilder();
??BufferedReader reader=null;
??try{
???reader = new BufferedReader(new InputStreamReader(in));
???String line=null;
???while((line = reader.readLine())!=null){
????buffer.append(line);
???????? }
??}catch(Exception e){
???e.printStackTrace();
??}finally{
???if(null!=reader){
????try {
?????reader.close();
????} catch (IOException e) {
?????e.printStackTrace();
????}
???}
??}
??return buffer.toString();
?}
--------------------------------------------------------------
第二个，是response消息返回给微信平台，我尝试的用最一般的out.print去做，但是发现没反应，观察PHP的代码写法
echo "";
exit;
------------------
猜想可能需要有个刷新的操作才能把消息response回去，于是找了下response内的一些函数做出以下尝试
//向请求端发送返回数据
?public void print(String content){
??try{
???final_response.getWriter().print(content);
???final_response.getWriter().flush();
???final_response.getWriter().close();
??}catch(Exception e){
???
??}
?}
---------------------------------------
关于微信公众平台的消息接口的详细介绍，可以参看微信公众平台的官方文档，里面介绍了消息的xml的格式和消息的发送方式等。

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