<dependency>
        <groupId>org.apache.httpcomponents</groupId>
        <artifactId>httpclient</artifactId>
        <version>4.5.12</version>
    </dependency>
    <dependency>
        <groupId>org.apache.httpcomponents</groupId>
        <artifactId>httpmime</artifactId>
        <version>4.5.8</version>
    </dependency>
    <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-databind</artifactId>
        <version>2.10.1</version>
    </dependency>
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-log4j12</artifactId>
        <version>1.7.25</version>
    </dependency>
    <dependency>
        <groupId>commons-logging</groupId>
        <artifactId>commons-logging</artifactId>
        <version>1.2</version>
    </dependency>

//法大大分配的appId
String appId="xxxxx";
//法大大分配的appId对应的秘钥
String appSecret="xxxxx";
//API请求地址
String serverUrl="";

// 初始化客户端
OpenApiClient openApiClient=new OpenApiClient(appId,appSecret,serverUrl);

// http超时配置设置， 默认不设置超时时间
// 如果不设置超时时间 该设置可忽略
HttpConfig httpConfig=new HttpConfig();
httpConfig.setConnectTimeout(1000000);
httpConfig.setReadTimeout(1000000);
openApiClient.setHttpConfig(httpConfig);

// Json序列化策率，默认使用Jackson，如果要使用其他如FastJson,Gson等实现JsonStrategy接口即可
// 如果使用默认该设置可以忽略
openApiClient.setJsonStrategy(new DefaultJsonStrategy());

// 初始化业务客户端
ServiceClient serviceClient=new ServiceClient(openApiClient);
// 获取accessToken
BaseRes<AccessTokenRes> res=serviceClient.getAccessToken();
String accessToken=res.getData().getAccessToken();

// 查询个人用户基本信息
UserClient userClient=new UserClient(openApiClient);
GetUserReq getUserReq=new GetUserReq();
getUserReq.setAccessToken(accessToken);
getUserReq.setClientUserId("clientUserId值客户自定义");
BaseRes<UserRes> res=userClient.get(getUserReq);