这篇文章主要为大家详细介绍了java微信二次开发第二篇，java微信文本消息接口请求与发送功能，具有一定的参考价值，感兴趣的小伙伴们可以参考一下
第二篇，做微信文本消息接口请求与发送，具体内容如下
需要导入库：dom4j-1.6.1.jar，xstream-1.3.1.jar
第一步：新建包com.wtz.message.response，新建类basemessage.java
package com.wtz.message.response;
/**
* @author wangtianze qq:864620012
* @date 2017年4月19日 下午3:12:40
* <p>version:1.0</p>
* <p>description:基础消息类</p>
*/
public class basemessage {
//接收方
private string tousername;
//发送方
private string fromusername;
//消息的创建时间
private long createtime;
//消息类型
private string msgtype;
public string gettousername() {
return tousername;
}
public void settousername(string tousername) {
tousername = tousername;
}
public string getfromusername() {
return fromusername;
}
public void setfromusername(string fromusername) {
fromusername = fromusername;
}
public long getcreatetime() {
return createtime;
}
public void setcreatetime(long createtime) {
createtime = createtime;
}
public string getmsgtype() {
return msgtype;
}
public void setmsgtype(string msgtype) {
msgtype = msgtype;
}
}
第二步：找到包com.wtz.message.response，新建类textmessage.java
package com.wtz.message.response;
/**
* @author wangtianze qq:864620012
* @date 2017年4月19日 下午3:22:33
* <p>version:1.0</p>
* <p>description:文本消息类</p>
*/
public class textmessage extends basemessage{
//消息内容
private string content;
public string getcontent() {
return content;
}
public void setcontent(string content) {
content = content;
}
}
第三步：找到包com.wtz.util，新建类messageutil.java
package com.wtz.util;
import java.io.ioexception;
import java.io.inputstream;
import java.io.writer;
import java.util.hashmap;
import java.util.list;
import java.util.map;
import javax.servlet.http.httpservletrequest;
import org.dom4j.document;
import org.dom4j.documentexception;
import org.dom4j.element;
import org.dom4j.io.saxreader;
import com.thoughtworks.xstream.xstream;
import com.thoughtworks.xstream.core.util.quickwriter;
import com.thoughtworks.xstream.io.hierarchicalstreamwriter;
import com.thoughtworks.xstream.io.xml.prettyprintwriter;
import com.thoughtworks.xstream.io.xml.xppdriver;
import com.wtz.message.response.textmessage;
/**
* @author wangtianze qq:864620012
* @date 2017年4月19日 下午3:29:58
* <p>version:1.0</p>
* <p>description:消息处理工具类</p>
*/
public class messageutil {
//定义了消息类型（常量：文本类型）
public static final string resp_message_type_text = "text";
//从流中解析出每个节点的内容
public static map<string,string> parsexml(httpservletrequest request) throws ioexception{
map<string,string> map = new hashmap<string,string>();
//从输入流中获取流对象
inputstream in = request.getinputstream();
//构建sax阅读器对象
saxreader reader = new saxreader();
try {
//从流中获得文档对象
document doc = reader.read(in);
//获得根节点
element root = doc.getrootelement();
//获取根节点下的所有子节点
list<element> children = root.elements();
for(element e:children){
//遍历每一个节点，并按照节点名--节点值放入map中
map.put(e.getname(), e.gettext());
system.out.println("用户发送的消息xml解析为：" + e.getname() + e.gettext());
}
//关闭流
in.close();
in = null;
} catch (documentexception e) {
// todo auto-generated catch block
e.printstacktrace();
}
return map;
}
/**
* 用于扩展节点数据按照<tousername><![cdata[touser]]></tousername>，中间加了cdata段
*/
private static xstream xstream = new xstream(new xppdriver(){
public hierarchicalstreamwriter createwriter(writer out){
return new prettyprintwriter(out){
boolean cdata = true;
public void startnode(string name,class clazz){
super.startnode(name,clazz);
}
protected void writetext(quickwriter writer,string text){
if(cdata){
writer.write("<![cdata[");
writer.write(text);
writer.write("]]>");
}else{
writer.write(text);
}
}
};
}
});
/**
* 将文本消息转换成xml格式
*/
public static string messagetoxml(textmessage textmessage){
xstream.alias("xml",textmessage.getclass());
string xml = xstream.toxml(textmessage);
system.out.println("响应所转换的xml："+xml);
return xml;
}
}
第四步：找到包com.wtz.service，新建类processservice.java
package com.wtz.util;
import java.io.ioexception;
import java.util.date;
import java.util.map;
import javax.servlet.http.httpservletrequest;
import com.wtz.message.response.textmessage;
/**
* @author wangtianze qq:864620012
* @date 2017年4月19日 下午8:04:14
* <p>version:1.0</p>
* <p>description:核心服务类</p>
*/
public class processservice {
public static string dealrequest(httpservletrequest request) throws ioexception{
//响应的xml串
string respxml = "";
//要响应的文本内容
string respcontent = "未知的消息类型";
map<string,string> requestmap = messageutil.parsexml(request);
string fromusername = requestmap.get("fromusername");
string tousername = requestmap.get("tousername");
string msgtype = requestmap.get("msgtype");
string content = requestmap.get("content");
system.out.println("用户给公众号发的消息为：" + content);
//构建一条文本消息
textmessage textmessage = new textmessage();
textmessage.settousername(fromusername);
textmessage.setfromusername(tousername);
textmessage.setcreatetime(new date().gettime());
textmessage.setmsgtype(messageutil.resp_message_type_text);
if(msgtype.equals(messageutil.resp_message_type_text)){
respcontent = "王天泽的公众号收到了您的一条文本消息：" + content + "，时间戳是：" + (new date().gettime());
}
textmessage.setcontent(respcontent);
respxml = messageutil.messagetoxml(textmessage);
system.out.println("respxml:"+respxml);
return respxml;
}
}
第五步：找到包com.wtz.service下的loginservlet类，重写dopost方法
package com.wtz.service;
import java.io.ioexception;
import java.io.printwriter;
import javax.servlet.servletexception;
import javax.servlet.http.httpservlet;
import javax.servlet.http.httpservletrequest;
import javax.servlet.http.httpservletresponse;
import com.wtz.util.messageutil;
import com.wtz.util.processservice;
import com.wtz.util.validationutil;
/**
* @author wangtianze qq:864620012
* @date 2017年4月17日 下午8:11:32
* <p>version:1.0</p>
* <p>description:微信请求验证类</p>
*/
public class loginservlet extends httpservlet {
@override
protected void doget(httpservletrequest request, httpservletresponse response)
throws servletexception, ioexception {
system.out.println("get请求。。。。。。");
//1.获得微信签名的加密字符串
string signature = request.getparameter("signature");
//2.获得时间戳信息
string timestamp = request.getparameter("timestamp");
//3.获得随机数
string nonce = request.getparameter("nonce");
//4.获得随机字符串
string echostr = request.getparameter("echostr");
system.out.println("获得微信签名的加密字符串："+signature);
system.out.println("获得时间戳信息："+timestamp);
system.out.println("获得随机数："+nonce);
system.out.println("获得随机字符串："+echostr);
printwriter out = response.getwriter();
//验证请求确认成功原样返回echostr参数内容，则接入生效，成为开发者成功，否则失败
if(validationutil.checksignature(signature, timestamp, nonce)){
out.print(echostr);
}
out.close();
out = null;
}
/**
* 接受微信服务器发过来的xml数据包（通过post请求发送过来的）
*/
@override
protected void dopost(httpservletrequest request, httpservletresponse response)
throws servletexception, ioexception {
request.setcharacterencoding("utf-8");
response.setcharacterencoding("utf-8");
//获取微信加密的签名字符串
string signature = request.getparameter("signature");
//获取时间戳
string timestamp = request.getparameter("timestamp");
//获取随机数
string nonce = request.getparameter("nonce");
printwriter out = response.getwriter();
if(validationutil.checksignature(signature,timestamp,nonce)){
string respxml = "";
try {
respxml = processservice.dealrequest(request);
} catch (exception e) {
// todo auto-generated catch block
e.printstacktrace();
}
out.print(respxml);
}
out.close();
out = null;
}
}
完成微信文本消息接口请求与发送。
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2. 微信投票源码
以上就是微信二次开发之文本消息请求与发送的详细内容。