最近在跟app對接的時候有個業務是微信登陸,在這裏記錄的不是如何一步步操做第三方的,由於是跟app對接,因此一部分代碼不是由我寫,
我只負責處理數據,可是整個微信第三方的流程大體都差很少,app端說要傳給我access_token和openid,對用戶的處理仍是要我去請求微信.
這裏寫一下發送請求以及解析數據的過程來獲取用戶資料,其餘的微信業務再作深究java
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;
@RequestMapping("getWeChatUserInfo")
@ResponseBody
public String getWeChatUserInfo(String token,String openid){
String urlNameString = "https://api.weixin.qq.com/sns/userinfo?access_token=TOKEN&openid=OPENID";
urlNameString=urlNameString.replace("TOKEN", token);
urlNameString=urlNameString.replace("OPENID",openid);
String result="";
try {
// 根據地址獲取請求
HttpGet request = new HttpGet(urlNameString);//這裏發送get請求
// 獲取當前客戶端對象
HttpClient httpClient = new DefaultHttpClient();
// 經過請求對象獲取響應對象
HttpResponse response = httpClient.execute(request);
// 判斷網絡鏈接狀態碼是否正常(0--200都數正常)
if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
result= EntityUtils.toString(response.getEntity(),"utf-8");
}
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return result;
//....result是用戶信息,站內業務以及具體的json轉換這裏也不寫了...
}
其中result打印出來是:apache
{
openid: "oIy1SuJhhc6Fk6z*****ecjrzySY",
nickname: "小丑",
sex: 1,
language: "zh_CN",
city: "海淀",
province: "北京",
country: "中國",
headimgurl: "http://wx.qlogo.cn/mmopen/WtXTficAHyjWBgHZX2Yf*****LK2CV9yLeiaHxKK8dhZshQgYeJEamaibT0UHQLicCfeBh698pJLc30Hrr6COHBqAKIj2rVQn3qKZ/0",
privilege: [ ],
unionid: "oK8SLt5GNKgJwPlL0JEST93***TQ"
}
-----------------------------------------------------------
延伸:json
Apache也有一個發送post請求的方法:api
String url="http://XXX..";
//POST的URL
HttpPost httppost=new HttpPost(url);
//創建HttpPost對象
List<NameValuePair> params=new ArrayList<NameValuePair>();
//創建一個NameValuePair數組，用於存儲欲傳送的參數
params.add(new BasicNameValuePair("pwd","2544"));
//添加參數
httppost.setEntity(new UrlEncodedFormEntity(params,HTTP.UTF_8));
//設置編碼
HttpResponse response=new DefaultHttpClient().execute(httppost);
//發送Post,並返回一個HttpResponse對象
if(response.getStatusLine().getStatusCode()==200){//若是狀態碼爲200,就是正常返回
String result=EntityUtils.toString(response.getEntity());
以上的Apache Client的get post方法發送請求在java中其實已經有內置了,只不過代碼稍複雜了一些
好比發送get請求數組
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.URL;
import java.net.URLConnection;
import java.util.List;
import java.util.Map;
public class HttpRequest {
/**
* 向指定URL發送GET方法的請求
*
* @param url
* 發送請求的URL
* @param param
* 請求參數，請求參數應該是 name1=value1&name2=value2 的形式。
* @return URL 所表明遠程資源的響應結果
*/
public static String sendGet(String url, String param) {
String result = "";
BufferedReader in = null;
try {
String urlNameString = url + "?" + param;
URL realUrl = new URL(urlNameString);
// 打開和URL之間的鏈接
URLConnection connection = realUrl.openConnection();
// 設置通用的請求屬性
connection.setRequestProperty("accept", "*/*");
connection.setRequestProperty("connection", "Keep-Alive");
connection.setRequestProperty("user-agent",
"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
// 創建實際的鏈接
connection.connect();
// 獲取全部響應頭字段
Map<String, List<String>> map = connection.getHeaderFields();
// 遍歷全部的響應頭字段
for (String key : map.keySet()) {
System.out.println(key + "--->" + map.get(key));
}
// 定義 BufferedReader輸入流來讀取URL的響應
in = new BufferedReader(new InputStreamReader(
connection.getInputStream(),"utf-8"));//防止亂碼
String line;
while ((line = in.readLine()) != null) {
result += line;
}
} catch (Exception e) {
System.out.println("發送GET請求出現異常！" + e);
e.printStackTrace();
}
// 使用finally塊來關閉輸入流
finally {
try {
if (in != null) {
in.close();
}
} catch (Exception e2) {
e2.printStackTrace();
}
}
return result;
}
發送post請求微信
/**
* 向指定 URL 發送POST方法的請求
*
* @param url
* 發送請求的 URL
* @param param
* 請求參數，請求參數應該是 name1=value1&name2=value2 的形式。
* @return 所表明遠程資源的響應結果
*/
public static String sendPost(String url, String param) {
PrintWriter out = null;
BufferedReader in = null;
String result = "";
try {
URL realUrl = new URL(url);
// 打開和URL之間的鏈接
URLConnection conn = realUrl.openConnection();
// 設置通用的請求屬性
conn.setRequestProperty("accept", "*/*");
conn.setRequestProperty("connection", "Keep-Alive");
conn.setRequestProperty("user-agent",
"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
// 發送POST請求必須設置以下兩行
conn.setDoOutput(true);
conn.setDoInput(true);
// 獲取URLConnection對象對應的輸出流
out = new PrintWriter(conn.getOutputStream());
// 發送請求參數
out.print(param);
// flush輸出流的緩衝
out.flush();
// 定義BufferedReader輸入流來讀取URL的響應
in = new BufferedReader(
new InputStreamReader(conn.getInputStream(),"utf-8"));
String line;
while ((line = in.readLine()) != null) {
result += line;
}
} catch (Exception e) {
System.out.println("發送 POST 請求出現異常！"+e);
e.printStackTrace();
}
//使用finally塊來關閉輸出流、輸入流
finally{
try{
if(out!=null){
out.close();
}
if(in!=null){
in.close();
}
}
catch(IOException ex){
ex.printStackTrace();
}
}
return result;
}
}