微信小程序登录

深碍√TFBOYSˉ_ 2023-06-18 11:58 18阅读 0赞

这段时间，一直闲，断断续续写了差不多10多篇博客了。今天下午研究了下微信小程序登录，以前没有做过这方面的，趁着有资源，玩一下小程序。

第一步: 去看微信开发文档接口，这个比什么资料都强，因为你是要调他们的接口。

第二步: 写Http请求工具类。

第三步: 配置账号AppID，AppSecret，与微信请求路径，也就是微信官方登录的请求路径，后面代码我会写上。

第四步: 接口，实现层，Controller写好。

第五步: 测试，联调。

其实调接口蛮简单的，只要你看懂了官方文档，无非是传参，业务处理，和异常处理。我就不啰嗦了，直接写代码把。

HttpClientUtil 请求工具类

/**
      * dapeng
      */
    public class HttpClientUtil {
    
        public static String doGet(String url, Map<String, String> param) {
    
            // 创建Httpclient对象
            CloseableHttpClient httpclient = HttpClients.createDefault();
    
            String resultString = "";
            CloseableHttpResponse response = null;
            try {
                // 创建uri
                URIBuilder builder = new URIBuilder(url);
                if (param != null) {
                    for (String key : param.keySet()) {
                        builder.addParameter(key, param.get(key));
                    }
                }
                URI uri = builder.build();
    
                // 创建http GET请求
                HttpGet httpGet = new HttpGet(uri);
    
                // 执行请求
                response = httpclient.execute(httpGet);
                // 判断返回状态是否为200
                if (response.getStatusLine().getStatusCode() == 200) {
                    resultString = EntityUtils.toString(response.getEntity(), "UTF-8");
                }
            } catch (Exception e) {
                e.printStackTrace();
            } finally {
                try {
                    if (response != null) {
                        response.close();
                    }
                    httpclient.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return resultString;
        }
    
        public static String doGet(String url) {
            return doGet(url, null);
        }
    
        public static String doPost(String url, Map<String, String> param) {
            // 创建Httpclient对象
            CloseableHttpClient httpClient = HttpClients.createDefault();
            CloseableHttpResponse response = null;
            String resultString = "";
            try {
                // 创建Http Post请求
                HttpPost httpPost = new HttpPost(url);
                // 创建参数列表
                if (param != null) {
                    List/*<NameValuePair>*/ paramList = new ArrayList<>();
                    for (String key : param.keySet()) {
                        paramList.add(new BasicNameValuePair(key, param.get(key)));
                    }
                    // 模拟表单
                    UrlEncodedFormEntity entity = new UrlEncodedFormEntity(paramList,"utf-8");
                    httpPost.setEntity(entity);
                }
                // 执行http请求
                response = httpClient.execute(httpPost);
                resultString = EntityUtils.toString(response.getEntity(), "utf-8");
            } catch (Exception e) {
                e.printStackTrace();
            } finally {
                try {
                    response.close();
                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
    
            return resultString;
        }
    
        public static String doPost(String url, Map<String, String> param,String token) {
            // 创建Httpclient对象
            CloseableHttpClient httpClient = HttpClients.createDefault();
            CloseableHttpResponse response = null;
            String resultString = "";
            try {
                // 创建Http Post请求
                HttpPost httpPost = new HttpPost(url);
                httpPost.setHeader("Content-Type", "application/x-www-form-urlencoded");
                if(token!=null){
                    httpPost.addHeader("Authorization", "QBox "+token);
                }
                // 创建参数列表
                if (param != null) {
                    List/*<NameValuePair>*/ paramList = new ArrayList<>();
                    for (String key : param.keySet()) {
                        paramList.add(new BasicNameValuePair(key, param.get(key)));
                    }
                    // 模拟表单
                    UrlEncodedFormEntity entity = new UrlEncodedFormEntity(paramList,"utf-8");
                    httpPost.setEntity(entity);
                }
                // 执行http请求
                response = httpClient.execute(httpPost);
                resultString = EntityUtils.toString(response.getEntity(), "utf-8");
            } catch (Exception e) {
                e.printStackTrace();
            } finally {
                try {
                    response.close();
                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
    
            return resultString;
        }
    
        public static String doPost(String url) {
            return doPost(url, null,null);
        }
    
        public static String doPostJson(String url, String json) {
            // 创建Httpclient对象
            CloseableHttpClient httpClient = HttpClients.createDefault();
            CloseableHttpResponse response = null;
            String resultString = "";
            try {
                // 创建Http Post请求
                HttpPost httpPost = new HttpPost(url);
                // 创建请求内容
                StringEntity entity = new StringEntity(json, ContentType.APPLICATION_JSON);
                httpPost.setEntity(entity);
                System.out.println(httpPost);
                // 执行http请求
                response = httpClient.execute(httpPost);
                resultString = EntityUtils.toString(response.getEntity(), "utf-8");
            } catch (Exception e) {
                e.printStackTrace();
            } finally {
                try {
                    response.close();
                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
    
            return resultString;
        }
    
        public static String doPostJson(String url, String json,String token) {
            // 创建Httpclient对象
            CloseableHttpClient httpClient = HttpClients.createDefault();
            CloseableHttpResponse response = null;
            String resultString = "";
            try {
                // 创建Http Post请求
                HttpPost httpPost = new HttpPost(url);
                if(token!=null){
                    httpPost.setHeader("Authorization","QBox <"+token+">");
                }
                // 创建请求内容
                StringEntity entity = new StringEntity(json, ContentType.APPLICATION_JSON);
                httpPost.setEntity(entity);
                System.out.println(httpPost);
                // 执行http请求
                response = httpClient.execute(httpPost);
                resultString = EntityUtils.toString(response.getEntity(), "utf-8");
            } catch (Exception e) {
                e.printStackTrace();
            } finally {
                try {
                    response.close();
                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
    
            return resultString;
        }
    }

WxConfig 参数配置，同学们，AppID与AppSecret你要写上你们公司账号的哈！

public static final String AppID="AppID";
        public  static final String AppSecret="AppSecret";
        public  static final String CODE_SESSION = "https://api.weixin.qq.com/sns/jscode2session";

impl实现层，接口我就不显示了，因为我实现层都写出来了。

@Override
        public WxLoginDto wxLogin(WxLoginParam wxLoginParam) {
            Map<String, String> param = new HashMap<>();
            param.put("appid", WxConfigVar.AppID);
            param.put("secret", WxConfigVar.AppSecret);
            param.put("js_code", wxLoginParam.getWxCode());
            param.put("grant_type", "authorization_code");
            String result = HttpClientUtil.doGet(WxConfigVar.CODE_SESSION, param);
            WxUserSession session = JSON.parseObject(result, WxUserSession.class);
            try {
                //这个里面是我公司的业务层，我直接去了，免得误导大家哈。
            } catch (Exception e) {
                e.printStackTrace();
                new WxUserException(ErrorCodeEnum.EDINSERTFAIL.code(), ErrorCodeEnum.EDINSERTFAIL.msg());
            }
        	//wxLoginDto  这个是我封装的一个类，用来返回前端需要的数据，你们自己随意。
            return wxLoginDto;
        }

小程序登录就这么简单，等会去看看微信登录，好像要申请应用。到时候我申请好了，发出来给大家看看，工作接口都写好了，等着联调了。