网页授权登录获取用户信息

1.先在公众号里面配置回调域名  不需要http:// 只需要一级域名
2.在你需要获取授权的页面加上链接 https://open.weixin.qq.com/connect/oauth2/authorize?appid=APPID&redirect_uri=REDIRECT_URI&response_type=code&scope=SCOPE&state=STATE#wechat_redirect
1）url 是你需要跳转的url
2）appid为你自己的公众号appid
3）scope 有两个参数可选 具体可参见 http://mp.weixin.qq.com/wiki/17/c0f37d5704f0b64713d5d2c37b468d75.html
3.在你的的回调页面里调用request.getParameter("code");获取code值
进一步获取用户信息
如下代码是网页授权信息
WeixinOauth2Token的model类
/**
* 网页授权信息
*
* @author liu
*/
public class WeixinOauth2Token {
// 网页授权接口调用凭证
private String accessToken;
// 凭证有效时长
private int expiresIn;
// 用于刷新凭证
private String refreshToken;
// 用户标识
private String openId;
// 用户授权作用域
private String scope;

public String getAccessToken() {
return accessToken;
}

public void setAccessToken(String accessToken) {
this.accessToken = accessToken;
}

public int getExpiresIn() {
return expiresIn;
}

public void setExpiresIn(int expiresIn) {
this.expiresIn = expiresIn;
}

public String getRefreshToken() {
return refreshToken;
}

public void setRefreshToken(String refreshToken) {
this.refreshToken = refreshToken;
}

public String getOpenId() {
return openId;
}

public void setOpenId(String openId) {
this.openId = openId;
}

public String getScope() {
return scope;
}

public void setScope(String scope) {
this.scope = scope;
}
}

-------------------------------------
/**
* 获取网页授权凭证
*
* @param appId 公众账号的唯一标识
* @param appSecret 公众账号的密钥
* @param code
* @return WeixinAouth2Token
*/
public static WeixinOauth2Token getOauth2AccessToken(String appId, String appSecret, String code) {
WeixinOauth2Token wat = null;
// 拼接请求地址
String requestUrl = "https://api.weixin.qq.com/sns/oauth2/access_token?appid=APPID&secret=SECRET&code=CODE&grant_type=authorization_code";
requestUrl = requestUrl.replace("APPID", appId);
requestUrl = requestUrl.replace("SECRET", appSecret);
requestUrl = requestUrl.replace("CODE", code);
// 获取网页授权凭证
JSONObject jsonObject = CommonUtil.httpsRequest(requestUrl, "GET", null);
if (null != jsonObject) {
try {
wat = new WeixinOauth2Token();
wat.setAccessToken(jsonObject.getString("access_token"));
wat.setExpiresIn(jsonObject.getInt("expires_in"));
wat.setRefreshToken(jsonObject.getString("refresh_token"));
wat.setOpenId(jsonObject.getString("openid"));
wat.setScope(jsonObject.getString("scope"));
} catch (Exception e) {
wat = null;
int errorCode = jsonObject.getInt("errcode");
String errorMsg = jsonObject.getString("errmsg");
log.error("获取网页授权凭证失败 errcode:{} errmsg:{}", errorCode, errorMsg);
}
}
return wat;
}

---------------------------------------------------------
httpsRequest方法

public static JSONObject httpsRequest(String requestUrl,
String requestMethod, String outputStr) {
JSONObject jsonObject = null;
try {
// 创建SSLContext对象，并使用我们指定的信任管理器初始化
TrustManager[] tm = { new MyX509TrustManager() };
SSLContext sslContext = SSLContext.getInstance("SSL", "SunJSSE");
sslContext.init(null, tm, new java.security.SecureRandom());
// 从上述SSLContext对象中得到SSLSocketFactory对象
SSLSocketFactory ssf = sslContext.getSocketFactory();

URL url = new URL(requestUrl);
HttpsURLConnection conn = (HttpsURLConnection) url.openConnection();
conn.setSSLSocketFactory(ssf);

conn.setDoOutput(true);
conn.setDoInput(true);
conn.setUseCaches(false);
// 设置请求方式（GET/POST）
conn.setRequestMethod(requestMethod);

// 当outputStr不为null时向输出流写数据
if (null != outputStr) {
OutputStream outputStream = conn.getOutputStream();
// 注意编码格式
outputStream.write(outputStr.getBytes("UTF-8"));
outputStream.close();
}

// 从输入流读取返回内容
InputStream inputStream = conn.getInputStream();
InputStreamReader inputStreamReader = new InputStreamReader(
inputStream, "utf-8");
BufferedReader bufferedReader = new BufferedReader(
inputStreamReader);
String str = null;
StringBuffer buffer = new StringBuffer();
while ((str = bufferedReader.readLine()) != null) {
buffer.append(str);
}

// 释放资源
bufferedReader.close();
inputStreamReader.close();
inputStream.close();
inputStream = null;
conn.disconnect();
jsonObject = JSONObject.fromObject(buffer.toString());
} catch (ConnectException ce) {
log.error("连接超时：{}", ce);
} catch (Exception e) {
log.error("https请求异常：{}", e);
}
return jsonObject;
}


-------------------------------------------
再一步获取openId

     String openId = weixinOath.getOpenId();

--------------------------------------------------
然后进一步获取用户信息
WeixinUserInfo 用户信息bean
/**
* 微信用户的基本信息
*
* @author liu
*/
public class WeixinUserInfo {
// 用户的标识
private String openId;
// 关注状态（1是关注，0是未关注），未关注时获取不到其余信息
private int subscribe;
// 用户关注时间，为时间戳。如果用户曾多次关注，则取最后关注时间
private String subscribeTime;
// 昵称
private String nickname;
// 用户的性别（1是男性，2是女性，0是未知）
private int sex;
// 用户所在国家
private String country;
// 用户所在省份
private String province;
// 用户所在城市
private String city;
// 用户的语言，简体中文为zh_CN
private String language;
// 用户头像
private String headImgUrl;

public String getOpenId() {
return openId;
}

public void setOpenId(String openId) {
this.openId = openId;
}

public int getSubscribe() {
return subscribe;
}

public void setSubscribe(int subscribe) {
this.subscribe = subscribe;
}

public String getSubscribeTime() {
return subscribeTime;
}

public void setSubscribeTime(String subscribeTime) {
this.subscribeTime = subscribeTime;
}

public String getNickname() {
return nickname;
}

public void setNickname(String nickname) {
this.nickname = nickname;
}

public int getSex() {
return sex;
}

public void setSex(int sex) {
this.sex = sex;
}

public String getCountry() {
return country;
}

public void setCountry(String country) {
this.country = country;
}

public String getProvince() {
return province;
}

public void setProvince(String province) {
this.province = province;
}

public String getCity() {
return city;
}

public void setCity(String city) {
this.city = city;
}

public String getLanguage() {
return language;
}

public void setLanguage(String language) {
this.language = language;
}

public String getHeadImgUrl() {
return headImgUrl;
}

public void setHeadImgUrl(String headImgUrl) {
this.headImgUrl = headImgUrl;
}
}


---------------------------------------
/**
* 获取用户信息
*
* @param accessToken 接口访问凭证
* @param openId 用户标识
* @return WeixinUserInfo
*/
public static WeixinUserInfo getUserInfo(String accessToken, String openId) {
WeixinUserInfo weixinUserInfo = null;
// 拼接请求地址
String requestUrl = "https://api.weixin.qq.com/cgi-bin/user/info?access_token=ACCESS_TOKEN&openid=OPENID";
requestUrl = requestUrl.replace("ACCESS_TOKEN", accessToken).replace("OPENID", openId);
// 获取用户信息
JSONObject jsonObject = CommonUtil.httpsRequest(requestUrl, "GET", null);

if (null != jsonObject) {
try {
weixinUserInfo = new WeixinUserInfo();
// 用户的标识
weixinUserInfo.setOpenId(jsonObject.getString("openid"));
// 关注状态（1是关注，0是未关注），未关注时获取不到其余信息
weixinUserInfo.setSubscribe(jsonObject.getInt("subscribe"));
// 用户关注时间
weixinUserInfo.setSubscribeTime(jsonObject.getString("subscribe_time"));
// 昵称
weixinUserInfo.setNickname(jsonObject.getString("nickname"));
// 用户的性别（1是男性，2是女性，0是未知）
weixinUserInfo.setSex(jsonObject.getInt("sex"));
// 用户所在国家
weixinUserInfo.setCountry(jsonObject.getString("country"));
// 用户所在省份
weixinUserInfo.setProvince(jsonObject.getString("province"));
// 用户所在城市
weixinUserInfo.setCity(jsonObject.getString("city"));
// 用户的语言，简体中文为zh_CN
weixinUserInfo.setLanguage(jsonObject.getString("language"));
// 用户头像
weixinUserInfo.setHeadImgUrl(jsonObject.getString("headimgurl"));
} catch (Exception e) {
if (0 == weixinUserInfo.getSubscribe()) {
log.error("用户{}已取消关注", weixinUserInfo.getOpenId());
} else {
int errorCode = jsonObject.getInt("errcode");
String errorMsg = jsonObject.getString("errmsg");
log.error("获取用户信息失败 errcode:{} errmsg:{}", errorCode, errorMsg);
}
}
}
return weixinUserInfo;
}