微信公众号开发（java）步骤1

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生成java项目

package com.cn.whirlpool.services.wechat;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.ws.rs.Consumes;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.QueryParam;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.ext.Provider;

import org.springframework.stereotype.Component;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;

@Transactional
@Component
@Provider
@Path("/Wechat/S_Wechat_Valid")
public class S_Wechat_Valid {
@Context HttpServletRequest request;
@Context HttpServletResponse response;

public S_Wechat_Valid(){return;}

@Transactional(propagation = Propagation.REQUIRED)
@GET
@Path("/doGet")
@Produces({MediaType.APPLICATION_JSON})
@Consumes({MediaType.APPLICATION_FORM_URLENCODED})
public String validateToken(@QueryParam("signature")  String signature,@QueryParam("timestamp")  String timestamp,@QueryParam("nonce")  String nonce,@QueryParam("echostr")String echostr){

// 通过检验signature对请求进行校验，若校验成功则原样返回echostr，表示接入成功，否则接入失败
//if (SignUtil.checkSignature(signature, timestamp, nonce)) {
if(true){
return(echostr);
}
return "";
}
}

接口配置信息