SpringBoot集成微信授權登錄

1. 搭建SpringBoot框架

2. pom.xml 引入依賴

   <!-- 微信httpclient 獲取用戶 openId-->
		    <dependency>
		            <groupId>org.apache.httpcomponents</groupId>
		            <artifactId>httpclient</artifactId>
		            <version>4.3.1</version>
		    </dependency>

			<dependency>
			    <groupId>com.alibaba</groupId>
			    <artifactId>fastjson</artifactId>
			    <version>1.2.21</version>
			</dependency>
				<!-- log4j日誌 -->
	<dependency>
	    <groupId>org.apache.logging.log4j</groupId>
	    <artifactId>log4j-core</artifactId>
	    <version>2.10.0</version>
	</dependency>
		
		

3.引入發送微信請求工具類

import com.alibaba.fastjson.JSONObject;

import org.apache.commons.codec.binary.Base64;
import org.apache.http.HttpEntity;
import org.apache.http.HttpStatus;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.security.InvalidAlgorithmParameterException;

public class HttpClientUtils
{
    private static Logger logger = LoggerFactory.getLogger(HttpClientUtils.class); // 日誌記錄

    private static RequestConfig requestConfig = null;

    static
    {
        // 設置請求和傳輸超時時
        requestConfig = RequestConfig.custom().setSocketTimeout(2000).setConnectTimeout(2000).build();
    }

    /**
     * post請求傳輸json參數
     * @param url  url地址
     * @param json 參數
     * @return
     */
    public static JSONObject httpPost(String url, JSONObject jsonParam)
    {
        // post請求返回結果
        CloseableHttpClient httpClient = HttpClients.createDefault();
        JSONObject jsonResult = null;
        HttpPost httpPost = new HttpPost(url);
        // 設置請求和傳輸超時時請求
        httpPost.setConfig(requestConfig);
        try
        {
        	 System.out.println(jsonParam);
            if (null != jsonParam)
            {
                // 解決中文亂碼問題
                StringEntity entity = new StringEntity(jsonParam.toString(), "utf-8");
                entity.setContentEncoding("UTF-8");
                entity.setContentType("application/json");
                httpPost.setEntity(entity);
            }
            System.out.println(jsonParam);
            CloseableHttpResponse result = httpClient.execute(httpPost);
            // 請求發請求成功，並得到響應
            if (result.getStatusLine().getStatusCode() == HttpStatus.SC_OK)
            {
                String str = "";
                try
                {
                    // 讀取服務器返回過來的json字符串數
                    str = EntityUtils.toString(result.getEntity(), "utf-8");
                    // 把json字符串轉換成json對象
                    jsonResult = JSONObject.parseObject(str);
                }
                catch (Exception e)
                {
                    logger.error("post請求提交失敗:" + url, e);
                }
            }
        }
        
        catch (IOException e)
        {
            logger.error("post請求提交失敗:" + url, e);
        }
        finally
        {
            httpPost.releaseConnection();
        }
        return jsonResult;
    }

    /**
     * post請求傳輸String參數 例如：name=Jack&sex=1&type=2
     * Content-type:application/x-www-form-urlencoded
     * @param url            url地址
     * @param strParam       參數
     * @return
     */
    public static JSONObject httpPost(String url, String strParam)
    {
        // post請求返回結果
        CloseableHttpClient httpClient = HttpClients.createDefault();
        JSONObject jsonResult = null;
        HttpPost httpPost = new HttpPost(url);
        httpPost.setConfig(requestConfig);
        try
        {
            if (null != strParam)
            {
                // 解決中文亂碼問題
                StringEntity entity = new StringEntity(strParam, "utf-8");
                entity.setContentEncoding("UTF-8");
                entity.setContentType("application/x-www-form-urlencoded");
                httpPost.setEntity(entity);
            }
            CloseableHttpResponse result = httpClient.execute(httpPost);
            // 請求發宋成功，並得到響應
            if (result.getStatusLine().getStatusCode() == HttpStatus.SC_OK)
            {
                String str = "";
                try
                {
                    // 讀取服務器返回過來的json字符串數據
                    str = EntityUtils.toString(result.getEntity(), "utf-8");
                    // 把json字符串轉換成json對象
                    jsonResult = JSONObject.parseObject(str);
                }
                catch (Exception e)
                {
                    logger.error("post請求提交失敗:" + url, e);
                }
            }
        }
        catch (IOException e)
        {
            logger.error("post請求提交失敗:" + url, e);
        }
        finally
        {
            httpPost.releaseConnection();
        }
        return jsonResult;
    }

    /**
     * 發�?�get請求
     * @param url 路徑
     * @return
     */
    public static JSONObject httpGet(String url)
    {
        // get請求返回結果
        JSONObject jsonResult = null;
        CloseableHttpClient client = HttpClients.createDefault();
        // 發�?�get請求
        HttpGet request = new HttpGet(url);
        request.setConfig(requestConfig);
        try
        {
            CloseableHttpResponse response = client.execute(request);

            // 請求發�?�成功，並得到響�?
            if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK)
            {
                // 讀取服務器返回過來的json字符串數�?
                HttpEntity entity = response.getEntity();
                String strResult = EntityUtils.toString(entity, "utf-8");
                // 把json字符串轉換成json對象
                jsonResult = JSONObject.parseObject(strResult);
            }
            else
            {
                logger.error("get請求提交失敗:" + url);
            }
        }
        catch (IOException e)
        {
            logger.error("get請求提交失敗:" + url, e);
        }
        finally
        {
            request.releaseConnection();
        }
        return jsonResult;
	  }
    
   }
    

4.調用方法 測試

     		
		    public static void main(String[] args) {
		    	//url中的  appid 和  secret 開發者會給你  這相當於你小程序的ID和密碼       js_code 也會給你  js_code是用微信開發者工具調用方法獲得
		    	String  appid="";//你小程序Id
		    	String secret="";//填入你小程序的secret
		    	String code="";//用微信開發者工具獲取到的code
		    	String url="https://api.weixin.qq.com/sns/jscode2session?appid="+appid+"&secret="+secret+"&js_code="+code+"&grant_type=authorization_code";
		    	 JSONObject jsonObj=HttpClientUtils.httpGet(url);
		    	 System.out.println(jsonObj);
		    	 //打印結果  
			}
		    

**如有缺少 請留言**